Waste

Universitas Teknokrat Indonesia Promotes Sustainability and Green Entrepreneurship Through Zero Waste Week Creative Market

Bandar Lampung – Universitas Teknokrat Indonesia (UTI) continues to strengthen its commitment to environmental sustainability and innovation through the implementation of Zero Waste Week, a campus-wide movement designed to encourage responsible consumption and creative waste management. One of the flagship activities of this initiative is the Creative Market, where students showcase a diverse range of eco-friendly products made from recycled and repurposed materials. Read More: Universitas Teknokrat Indonesia Students Unveil AgroBot Feed, an AI-Powered Smart Collar System Transforming Livestock Farming More than just an exhibition, the Creative Market serves as a platform for students to demonstrate how creativity and innovation can transform waste into products with economic value. By converting discarded materials into functional crafts, decorative items, and environmentally friendly merchandise, students highlight the potential of sustainable practices to create positive social, environmental, and economic impact. The event attracted enthusiastic participation from students, lecturers, and visitors who explored various innovative products while learning about the importance of reducing waste and adopting sustainable lifestyles. Through this initiative, Universitas Teknokrat Indonesia reinforces its vision of creating a campus culture that integrates environmental responsibility into everyday activities. “The Creative Market is a reflection of how innovation can emerge from simple ideas. By transforming waste into useful products, students are demonstrating that sustainability is not only an environmental responsibility but also an opportunity to create value and inspire change,” said one of the event organizers. Turning Waste into Opportunity As concerns over waste management and environmental degradation continue to grow globally, educational institutions play an increasingly important role in promoting sustainable behaviors and innovative solutions. The Creative Market was established as part of Zero Waste Week to encourage students to rethink the concept of waste and explore opportunities for recycling, upcycling, and resource efficiency. Instead of viewing discarded materials as unusable items, students were challenged to transform them into products that are aesthetically appealing, functional, and marketable. The resulting products showcased remarkable creativity and demonstrated how environmental challenges can be addressed through innovation. From handcrafted accessories and home décor to practical everyday items, each creation reflected the students’ ability to combine sustainability with entrepreneurial thinking. The initiative also serves as an educational platform that encourages greater awareness about responsible waste management and the importance of reducing environmental impact through conscious consumption choices. Supporting Responsible Consumption and Production The Creative Market directly contributes to Sustainable Development Goal (SDG) 12: Responsible Consumption and Production, which promotes sustainable resource management and waste reduction. Through hands-on participation in recycling and product development activities, students gain a deeper understanding of circular economy principles, where materials are reused and repurposed rather than discarded. This approach helps reduce waste generation while maximizing the value of existing resources. By encouraging students to create products from recyclable materials, Universitas Teknokrat Indonesia demonstrates how sustainability can be integrated into education and entrepreneurship. The initiative fosters practical skills while inspiring participants to adopt more environmentally responsible lifestyles. Furthermore, the project highlights the role of innovation in addressing environmental challenges and supports broader efforts to promote sustainable production patterns within communities. Read More: Universitas Teknokrat Indonesia Accelerates Green Campus Transformation Through Solar Energy Initiative Creating a More Sustainable Campus Community Beyond waste reduction, Zero Waste Week contributes significantly to Sustainable Development Goal (SDG) 11: Sustainable Cities and Communities, which focuses on creating inclusive, safe, resilient, and sustainable environments. Through activities such as the Creative Market, sustainability becomes an integral part of campus life. Students are encouraged to actively participate in environmental initiatives, creating a culture where ecological responsibility is shared by the entire academic community. The event serves as a microcosm of sustainable urban living, demonstrating how communities can work together to reduce waste, conserve resources, and create positive environmental outcomes. By embedding sustainability principles into everyday practices, Universitas Teknokrat Indonesia helps prepare students to become responsible citizens capable of contributing to greener and more resilient communities. The initiative also strengthens collaboration among students from various disciplines, encouraging interdisciplinary approaches to environmental problem-solving and community engagement. Encouraging Green Entrepreneurship and Economic Growth In addition to its environmental benefits, the Creative Market supports Sustainable Development Goal (SDG) 8: Decent Work and Economic Growth by fostering entrepreneurial skills and encouraging the development of green businesses. Students participating in the event not only learned how to create sustainable products but also gained valuable experience in marketing, branding, customer engagement, and business management. These experiences help prepare them for future careers as entrepreneurs and innovators within the growing green economy. The event demonstrates that sustainability and economic growth are not mutually exclusive. On the contrary, environmentally responsible businesses can generate new opportunities, create value, and contribute to long-term economic resilience. By promoting green entrepreneurship, Universitas Teknokrat Indonesia empowers students to explore innovative business models that prioritize both profitability and environmental stewardship. Vice Rector Applauds Students’ Commitment to Sustainability The Vice Rector of Universitas Teknokrat Indonesia praised the enthusiasm and creativity displayed by students during Zero Waste Week and emphasized the importance of sustainability-oriented innovation. “The Creative Market is a remarkable example of how our students are transforming environmental challenges into opportunities for innovation and economic development. Their creativity demonstrates that sustainability can be both impactful and inspiring,” the Vice Rector stated. He further highlighted the university’s commitment to cultivating a campus environment that encourages responsible leadership and environmental awareness. “Universitas Teknokrat Indonesia is committed to nurturing graduates who not only excel academically but also understand their responsibility toward society and the environment. Through initiatives like Zero Waste Week, we are fostering a generation of innovators and entrepreneurs who are capable of creating sustainable solutions for the future,” he added. Inspiring Long-Term Change Through Innovation The success of the Creative Market illustrates how small actions can contribute to meaningful and lasting change. By transforming waste into valuable products, students demonstrate that sustainability is not merely a concept but a practical approach to addressing contemporary environmental and economic challenges. More importantly, the initiative encourages individuals to rethink their relationship with consumption and waste, inspiring a shift toward more sustainable habits and

Universitas Teknokrat Indonesia Civil Engineering Students Transform Waste into Sustainable Infrastructure Through “Tekno Plasting” Innovation

Bandar Lampung – Universitas Teknokrat Indonesia (UTI) continues to strengthen its reputation as a hub for innovation and sustainable education through the development of Tekno Plasting, an environmentally friendly infrastructure product created by Civil Engineering students. Developed through a project-based learning approach under the supervision of Dr. Ir. Lilik Ariyanto, the innovation transforms plastic waste, paper waste, and construction debris into durable “T-shaped” paving blocks designed to support sustainable infrastructure development. Read More: Universitas Teknokrat Indonesia Strengthens Sustainable Campus Vision Through Green Open Spaces That Support Learning and Well-Being The project reflects the university’s commitment to equipping students with practical skills that extend beyond classroom learning. By directly engaging in research, experimentation, and field-based problem-solving, students are encouraged to apply engineering theories to real-world environmental and infrastructure challenges. Developed by a team consisting of Selvia, Danang, and Erwin, Tekno Plasting demonstrates how academic knowledge, creativity, and environmental awareness can be combined to produce innovative solutions with tangible societal benefits. “Through Tekno Plasting, we wanted to show that waste materials still have significant value when managed creatively and scientifically. Our goal is not only to develop an alternative construction material but also to contribute to environmental sustainability by reducing waste accumulation,” explained the student team. Turning Environmental Challenges into Engineering Opportunities As urbanization and industrial activities continue to increase, waste management has become one of the most pressing environmental concerns worldwide. Plastic waste, discarded paper, and construction debris often end up in landfills, creating environmental burdens and contributing to pollution. Recognizing this challenge, the Civil Engineering students sought to develop a practical solution that addresses both waste management and infrastructure needs simultaneously. Through extensive experimentation and material testing, they successfully transformed various waste materials into paving blocks that can be utilized for pedestrian pathways, public spaces, and other infrastructure applications. The distinctive “T-shaped” design of the paving blocks enhances their functionality while demonstrating the team’s commitment to combining engineering principles with innovative product development. The project illustrates how engineering innovation can contribute to a circular economy, where waste materials are repurposed into valuable products rather than discarded as environmental liabilities. Bringing Education Beyond the Classroom The development of Tekno Plasting represents a strong example of project-based learning, an educational approach that encourages students to actively participate in solving real-world problems through research, collaboration, and innovation. Under the mentorship of Dr. Ir. Lilik Ariyanto, students were given opportunities to conduct field observations, test materials, analyze engineering performance, and evaluate the environmental impact of their innovation. This hands-on learning experience enabled them to gain practical knowledge while strengthening critical thinking and technical problem-solving skills. The initiative demonstrates Universitas Teknokrat Indonesia’s commitment to Sustainable Development Goal (SDG) 4: Quality Education, which emphasizes providing relevant, practical, and future-oriented learning opportunities. Rather than limiting education to theoretical instruction, the university encourages students to engage directly with societal challenges and develop solutions that create meaningful impact. Through projects such as Tekno Plasting, students gain valuable experience that prepares them to become competent professionals and future innovators. Read More: Universitas Teknokrat Indonesia English Literature Students Launch “Whisper from Desa Payungi” Anthology at UTI EXPO 2025/2026 Supporting Sustainable Industry and Infrastructure Beyond its educational significance, Tekno Plasting aligns closely with Sustainable Development Goal (SDG) 9: Industry, Innovation, and Infrastructure, which promotes resilient infrastructure, sustainable industrialization, and technological innovation. The innovation demonstrates how environmentally friendly technologies can support infrastructure development while reducing the environmental footprint of construction activities. By utilizing recycled materials, the paving blocks contribute to resource efficiency and encourage the adoption of sustainable practices within the construction sector. As governments and industries increasingly seek green alternatives to conventional building materials, innovations such as Tekno Plasting offer promising opportunities for the future of sustainable infrastructure development. The project also highlights the important role universities can play in supporting industrial modernization through research-driven innovation and the commercialization of student-generated technologies. Advancing Environmental Sustainability In addition to supporting SDG 4 and SDG 9, Tekno Plasting contributes significantly to environmental sustainability by promoting responsible waste management practices. The innovation helps reduce the volume of waste entering landfills while creating economic and functional value from materials that would otherwise be discarded. The initiative reflects growing global efforts to transition toward sustainable production and consumption patterns. By transforming waste into useful construction products, the students demonstrate how innovation can simultaneously address environmental, economic, and social challenges. Experts increasingly emphasize the importance of integrating sustainability principles into engineering education, and Tekno Plasting serves as an excellent example of how future engineers can contribute to environmental stewardship through practical innovation. Vice Rector Commends Student Innovation The Vice Rector of Universitas Teknokrat Indonesia praised the students’ achievement and emphasized the importance of innovation-driven education in addressing global sustainability challenges. “Tekno Plasting is a remarkable example of how our students are applying engineering knowledge to solve real-world environmental problems. This innovation reflects not only technical competence but also creativity, responsibility, and a strong commitment to sustainable development,” the Vice Rector stated. He further noted that the university remains dedicated to creating an educational ecosystem that encourages students to become innovators and change-makers. “We are proud of Selvia, Danang, and Erwin for demonstrating that quality education can produce solutions with meaningful societal impact. Through projects like Tekno Plasting, our students are proving that innovation can support environmental protection, infrastructure development, and economic sustainability simultaneously,” he added. Inspiring a More Sustainable Future discarded materials into valuable infrastructure products, the students have shown that sustainable innovation is not merely a concept but a practical pathway toward positive change. As Universitas Teknokrat Indonesia continues to promote research, innovation, and community engagement, initiatives such as Tekno Plasting reaffirm the university’s role in preparing future leaders capable of addressing the complex challenges of the modern world. The innovation stands as a powerful testament to the idea that quality education inspires meaningful action, and that the solutions to tomorrow’s challenges can emerge from the creativity and determination of today’s students. Through Tekno Plasting, Universitas Teknokrat Indonesia once again demonstrates its commitment to producing graduates

Universitas Teknokrat Indonesia Strengthens Sustainable Campus Vision Through Green Open Spaces That Support Learning and Well-Being

Bandar Lampung – Universitas Teknokrat Indonesia (UTI) continues to demonstrate that technological advancement and environmental sustainability can coexist harmoniously through the development and maintenance of its expansive Green Open Spaces. More than simply enhancing the visual appeal of the campus, these green areas have become an integral part of the university’s educational ecosystem, providing students with a comfortable, healthy, and inspiring environment for learning and personal growth. Read More: Market Mastery Showcase at Academic Expo 2026 Highlights Universitas Teknokrat Indonesia’s Commitment to Entrepreneurship, Innovation, and Sustainable Economic Development trategically located throughout the campus, the Green Open Spaces function as an “academic oasis” where students can engage in various academic and social activities outside traditional classrooms. Surrounded by lush trees, landscaped gardens, and refreshing natural scenery, these spaces offer a peaceful atmosphere that encourages creativity, collaboration, and intellectual exploration. For many students, the campus gardens have become favorite locations for group discussions, project meetings, assignment completion, and informal learning sessions. The calm and refreshing environment provides an alternative learning space that stimulates fresh ideas and promotes a more balanced academic experience. “Our Green Open Spaces are designed not only to beautify the campus but also to create a supportive learning environment where students can think creatively, collaborate effectively, and maintain a healthy balance between academic responsibilities and personal well-being,” said a university representative. Creating a Sustainable and Inclusive Academic Environment As universities around the world increasingly prioritize sustainability, Universitas Teknokrat Indonesia has positioned environmental stewardship as an important component of its campus development strategy. The Green Open Spaces reflect the institution’s commitment to creating an educational environment that is both environmentally responsible and socially inclusive. The availability of accessible public spaces allows students, lecturers, staff members, and visitors to interact in a welcoming environment that fosters community engagement and collaboration. These areas are designed to be safe, inclusive, and accessible to all members of the academic community, ensuring that everyone can benefit from the positive impacts of a green campus environment. The initiative represents a concrete contribution to Sustainable Development Goal (SDG) 11: Sustainable Cities and Communities, which promotes the development of inclusive, safe, resilient, and sustainable public spaces. By integrating environmental considerations into campus planning, Universitas Teknokrat Indonesia creates a microcosm of sustainable urban living while supporting broader environmental goals. The university’s commitment to maintaining green infrastructure also contributes to reducing environmental impacts associated with urban development, helping to improve air quality, preserve biodiversity, and maintain ecological balance within the campus area. Read More: Universitas Teknokrat Indonesia Students Develop “Nutriscane,” a Smart Nutrition-Tracking Application to Promote Healthier Consumer Choices Supporting Student Health and Mental Well-Being Beyond environmental sustainability, the Green Open Spaces play an important role in promoting the physical and mental health of students. Numerous studies have shown that exposure to natural environments can help reduce stress, improve concentration, enhance mood, and support overall psychological well-being. In today’s increasingly demanding academic environment, students often face significant pressures related to coursework, examinations, and extracurricular activities. The presence of green areas provides a valuable opportunity for relaxation, reflection, and recovery from daily academic stress. By offering students access to natural surroundings, Universitas Teknokrat Indonesia actively supports Sustainable Development Goal (SDG) 3: Good Health and Well-Being, which emphasizes the importance of ensuring healthy lives and promoting well-being for all. The tranquil atmosphere created by shaded walkways, landscaped gardens, and open recreational spaces enables students to recharge mentally and physically, ultimately contributing to better academic performance and overall quality of life. “A healthy learning environment is essential for academic success. We believe that student well-being is just as important as intellectual achievement, and our Green Open Spaces provide a supportive setting where both can flourish,” a campus official noted. Integrating Technology and Sustainability What makes Universitas Teknokrat Indonesia unique is its ability to combine technological excellence with environmental responsibility. While the university is widely recognized for its focus on innovation, digital transformation, and technological advancement, it also recognizes the importance of creating a sustainable and human-centered learning environment. The Green Open Spaces symbolize this balanced approach by demonstrating that modern educational infrastructure can coexist with ecological preservation. Rather than prioritizing development at the expense of nature, the university has embraced a vision in which technology and sustainability complement one another. This philosophy aligns with global trends in higher education that emphasize the importance of sustainable campus development as part of broader efforts to address environmental and social challenges. Vice Rector Highlights Importance of Sustainable Campus Development The Vice Rector of Universitas Teknokrat Indonesia expressed appreciation for the university’s ongoing efforts to create a campus environment that supports both academic excellence and environmental sustainability. “The Green Open Spaces at Universitas Teknokrat Indonesia represent our commitment to creating a campus that nurtures not only intellectual growth but also physical and mental well-being. We believe that a healthy and sustainable environment is essential for developing future leaders who are innovative, responsible, and globally competitive,” the Vice Rector stated. He further emphasized that sustainability has become an integral part of the university’s long-term vision. “As a higher education institution, we have a responsibility to contribute to sustainable development. Through the creation of inclusive green spaces, we provide our students with opportunities to learn, collaborate, and grow in an environment that reflects our commitment to environmental stewardship and community well-being,” he added. A Model for Sustainable Higher Education The success of Universitas Teknokrat Indonesia’s Green Open Spaces demonstrates how universities can play a significant role in promoting sustainable development while enhancing the quality of campus life. By integrating environmental sustainability into educational infrastructure, the university creates a learning ecosystem that supports academic achievement, personal development, and community engagement. The initiative serves as a reminder that modern campuses must be designed not only as centers of knowledge and innovation but also as spaces that promote health, sustainability, and human well-being. As Universitas Teknokrat Indonesia continues to expand its academic and technological capabilities, the university remains committed to preserving the natural environment that enriches the learning experience. Through its

Maintaining the campus as a comfortable and beautiful learning environtment

Students of Universitas Teknokrat Indonesia organized a campus clean-up movement as a form of care for cleanliness and shared health. This activity is a real contribution from students to maintain a fresh and comfortable environment for the entire academic community. Through this movement, participants are encouraged to take responsibility for cleanliness and raise awareness that a clean environment is a shared responsibility, not just the janitors’ duty. A healthy environment supports a more effective and enjoyable teaching and learning process. Universitas Teknokrat Indonesia also fully supports this effort by providing the necessary equipment and facilities. With this spirit of togetherness, we hope our campus remains clean and becomes a model of a healthy environment for the wider community. Looking ahead, the campus clean-up initiative is expected to become a regular agenda, fostering a long-term culture of environmental stewardship among students. By involving student organizations, faculty members, and administrative staff, Universitas Teknokrat Indonesia aims to build a united movement that inspires other educational institutions to adopt similar practices. This consistent commitment to environmental care not only enhances the university’s image as a Green Campus but also instills lifelong values of discipline, responsibility, and social awareness in its students.

Fashion from Waste: Creative Recycled Clothing by Teknokrat Students

The new students of Universitas Teknokrat Indonesia showcase their creativity and environmental awareness through an innovative project: clothing made from recycled waste materials. With a unique and modern design touch, each garment is not only eco-friendly but also highly aesthetic, proving that waste can be transformed into something valuable and appealing. This idea demonstrates that discarded materials can be turned into extraordinary fashion pieces. Beyond appearance, these recycled clothes hold promising economic value. By utilizing materials that are usually discarded, the students have successfully created products that can be marketed competitively in the sustainable fashion industry. This innovation opens new opportunities in the creative sector while raising public awareness about the importance of caring for the environment through eco-friendly products. This work symbolizes the youthful spirit of innovation combined with responsibility for the planet. Universitas Teknokrat Indonesia is proud to foster a generation that thinks creatively and acts responsibly toward the future. Hopefully, this project inspires more people to contribute to environmental preservation in creative and meaningful ways.

From Waste to Worth: Creative Souvenirs Made from Coconut Husk

Students of Universitas Teknokrat Indonesia have once again demonstrated their contribution to the creative industry through an inspiring innovation: transforming coconut husk waste into unique and economically valuable souvenirs. This initiative was born out of a strong commitment to providing sustainable solutions to environmental issues while also creating new business opportunities for the local community. With a touch of creativity and appropriate technology, discarded coconut husks are now turned into handcrafted products. The production process also involves empowering local residents, resulting in a real and sustainable economic impact. This innovation not only reflects the students’ concern for the environment but also highlights the active role of young people in developing creative industries based on local wisdom. Universitas Teknokrat Indonesia is proud to be part of this positive change and continues to support impactful innovations from its students.

Turning Waste into Wellness: Pineapple Peel Drink Innovation by Teknokrat Students

Students from Universitas Teknokrat Indonesia have once again demonstrated their creativity and concern for health and the environment through an innovative healthy drink made from pineapple peels. By utilizing pineapple peel waste, which is often discarded, they successfully developed a beverage that is not only refreshing but also rich in natural nutrients and antioxidants. This drink is the result of thorough research combining health science, food technology, and environmental sustainability. This innovation not only helps reduce organic waste but also opens new eco-friendly business opportunities that benefit the wider community. Through this product, Universitas Teknokrat students prove that creativity and knowledge can work together to create innovative and sustainable solutions. The success of this innovation inspires young generations to keep creating and contributing to the development of healthy and environmentally friendly local products. The spirit of innovation from Universitas Teknokrat students shows that the future of the creative and health industries lies in the hands of youth who care about nature and public health. @[email protected]@teknokrat_official@lldiktii2@ditjen_dikti

Teknokrat students develop digital smart composter technology

Universitas Teknokrat Indonsia have presented extraordinary innovations in organic waste management by creating a digital compost processing tool that is efficient and environmentally friendly. By combining modern technology and a natural composting process, this tool makes it easier for people to process organic waste practically at home. Equipped with automatic sensors to regulate temperature, humidity and stirring, this tool ensures the decomposition process runs optimally without requiring much maintenance. This innovation not only provides a solution to the problem of organic waste, but also plays a role in supporting environmental sustainability. With faster and more efficient processing, organic waste that was previously wasted can now be converted into quality compost that can be used to fertilize the soil. This opens up opportunities to reduce dependence on chemical fertilizers, as well as having a positive impact on the agricultural sector and urban gardens. This work shows the commitment of Universitas Teknokrat Indonsia students to contribute to the development of technology that is beneficial to society and the country. Apart from providing a solution to the waste problem, this digital compost processing tool also inspires the younger generation to continue to innovate in creating environmentally friendly and sustainable technology. “With enthusiasm and creativity, these students prove that technology can be a tool to create a greener and better world.” The development of this digital composting tool has also received strong support from Universitas Teknokrat Indonesia through research funding, mentoring from lecturers, and collaboration with industry partners. The university believes that student-led innovations like this are essential in addressing real-world environmental challenges while fostering a spirit of entrepreneurship and problem-solving. Currently, the team behind the tool is working on scaling the technology for broader use, including in schools, communities, and rural areas where organic waste management remains a pressing issue. Several local governments and environmental NGOs have also expressed interest in adopting the innovation, seeing its potential to contribute to cleaner environments and sustainable waste solutions. By bridging academic research with practical applications, Universitas Teknokrat Indonesia continues to position itself as a leading institution in promoting eco-conscious innovation. As awareness of environmental issues grows globally, initiatives like this reflect the pivotal role of universities in shaping a generation that not only thinks critically but also acts responsibly for the future of the planet.

Renewable Energy: The Key to Sustainable Zero-Waste

The concept of zero-waste is gaining popularity as an effort to reduce waste and create a circular economy. However, achieving zero-waste goals depends not only on effective waste management but also on the energy sources used. Renewable energy, with its sustainable and eco-friendly nature, plays a crucial role in supporting zero-waste initiatives. The Connection Between Renewable Energy and Zero-Waste Renewable energy and zero-waste have a mutually beneficial relationship: Examples of Renewable Energy in Zero-Waste Practices Challenges and Opportunities While the potential of renewable energy in supporting zero-waste is significant, there are still several challenges to overcome, such as: On the other hand, there are many opportunities to be leveraged, such as: Renewable energy is key to achieving a sustainable zero-waste future. By harnessing the potential of renewable energy, we can reduce environmental impacts, create a circular economy, and build a better future for all. Sumber : https://www.ui.ac.id/keberlanjutan-lingkungan-untuk-menggalakan-zero-waste-dan-zero-emission/

Application of Renewable Energy in Waste Treatment Facilities: Towards a Cleaner Future

Waste management has become an increasingly urgent global issue. As the population grows and human activity intensifies, the amount of waste continues to rise. However, behind this problem lies a significant opportunity to transform waste into a source of renewable energy. One approach to addressing this is by applying renewable energy technologies in waste treatment facilities. The Potential of Renewable Energy from Waste Waste contains a substantial amount of energy that can be harnessed. Through proper treatment processes, waste can be converted into various forms of renewable energy, such as: Technologies Used Several technologies are commonly used to convert waste into renewable energy, including: Benefits of Applying Renewable Energy in Waste Treatment Facilities Challenges and Solutions Despite its potential, the application of renewable energy in waste treatment still faces several challenges, such as: Solutions to address these challenges include: The application of renewable energy in waste treatment facilities is a crucial step in addressing the waste problem and moving toward a more sustainable future. With ongoing technological advancements and the right policy support, the potential of renewable energy from waste can be optimized to provide greater benefits for both society and the environment. Source: (https://dinaslh.kaltimprov.go.id/upaya-pengolahan-sampah-menjadi-energi-terbarukan/)

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