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Limbah kulit Jeruk peras , yang sering dibuang dan menimbulkan masalah lingkungan, sebenarnya memiliki potensi besar untuk dimanfaatkan kembali. Kulit Jeruk peras  mengandung minyak atsiri yang dapat diolah menjadi reed diffuser, pengharum ruangan alami yang ramah lingkungan. Namun, pengetahuan masyarakat tentang pemanfaatan kulit Jeruk peras  masih terbatas. Siswa SMA, sebagai generasi muda yang sedang mempersiapkan diri untuk dunia kerja atau wirausaha, dapat memainkan peran penting dalam mengembangkan inovasi ini. Melalui pendidikan dan pelatihan, siswa SMA dapat mempelajari proses pembuatan reed diffuser dari kulit Jeruk peras , mulai dari ekstraksi minyak atsiri hingga pengemasan produk. Hal ini tidak hanya melatih keterampilan teknis dan kreativitas, tetapi juga membuka peluang kewirausahaan. Pemanfaatan kulit Jeruk peras  untuk reed diffuser sejalan dengan prinsip ekonomi sirkular dan pembangunan berkelanjutan, yang menekankan pemanfaatan sumber daya secara efisien. Dengan menguasai keterampilan ini, siswa SMA dapat berkontribusi dalam mengurangi limbah organik sekaligus menciptakan produk bernilai ekonomi tinggi. Ini juga mendukung visi pendidikan SMA untuk menciptakan lulusan yang kompeten, kreatif, dan siap bersaing di dunia kerja. Pengabdian masyarakat kali ini dilaksanakan di SMA Islam 1 Surakarta, Kota Surakarta.

Plastic waste, particularly bottle caps, poses a significant environmental challenge due to its slow degradation rate. This study aims to design a functional shoe rack utilizing plastic bottle cap waste to support Sustainable Development Goals (SDG 12: Responsible Consumption and Production). The product development process employed the Quality Function Deployment (QFD) method to translate consumer needs into measurable technical specifications. Concept selection was evaluated using the Pugh Matrix, while financial feasibility was analyzed through the Break Even Point (BEP) approach. The research resulted in an optimal shoe rack design measuring 53x32x37 cm, weighing 1.5 kg, and featuring additional side hangers for socks. The production process involves shredding, molding with resin, cutting, and assembling, with a total duration of 367.03 minutes. Financial analysis indicates that the business reaches the break-even point at a minimum production of 2 units or a total sales value of Rp227,272. This research demonstrates that integrating industrial engineering methods into plastic waste management can produce functional, durable, and economically viable products.

Pemurnian vitamin E dari berbagai sumber bahan alami dan limbah agroindustri terus berkembang seiring meningkatnya kebutuhan industri pangan, nutraseutikal, kosmetik, dan farmasi. Berbagai metode pemurnian telah diterapkan meliputi saponifikasi, ekstraksi menggunakan pelarut, dan distilasi molekuler. Studi ini mengkaji secara sistematis perkembangan metode pemurnian vitamin E dari berbagai sumber serta mengevaluasi keunggulan, keterbatasan, serta prospek penerapan teknologi yang lebih berkelanjutan. Penelusuran literatur dilakukan terhadap publikasi dalam 10 tahun terakhir yang diperoleh dari jurnal nasional dan internasional. Hasil kajian menunjukkan bahwa sumber alami vitamin E banyak terdapat pada minyak nabati, sedangkan sumber dari limbah agroindustri dengan kandungan vitamin E tertinggi diperoleh pada Palm Fatty Acid Distillate (PFAD). Kandungan vitamin E yang bervariasi tergantung dari jenis bahan baku, kondisi proses, dan metode pemurnian yang digunakan. Studi komparatif terkait potensi kandungan vitamin E pada bahan alam dan limbah agroindustri lokal Indonesia masih terbatas, khususnya yang mempertimbangkan variasi varietas genetik. Dari aspek teknik pemurnian, metode ekstraksi konvensional memerlukan beberapa tahapan proses sehingga perlu ditinjau dari sisi efisiensi operasional dan keekonomian. Hasil kajian menunjukkan penggunaan green solvent seperti ekstraksi dengan scCO2 dan DES yang berpotensi meningkatkan keamanan proses dan keberlanjutan lingkungan. Pengembangan metode pemurnian yang efisien, ekonomis, dan ramah lingkungan menjadi kunci dalam mendukung pemanfaatan berbagai sumber vitamin E secara berkelanjutan.

The benefit of cardboard waste as a headpiece is to encourage the entrepreneurial spirit to continue to be creative in processing this inorganic waste into products at prices that are relatively cheap compared to prices on the market. Data collection uses the methods of Observation, Literature, Experimentation, Documentation, Interviews, Questionnaires. The author carried out the process of using cardboard waste to make headpieces through several stages, not only that, the author also carried out experiments 3 times using different dyes. In experiment 1 using gold pilok, experiment 2 used gold pilok then sprinkled with gold glitter, then experiment 3 used wall paint coloring sprinkled with gold glitter. The author conducted a sensory test regarding the public's acceptance of headpiece products made from cardboard waste. The highest average results were obtained in experiment 3 with a total average color of 2.87 which means quite appropriate, a total average texture of 2.63 which means quite suitable, a total average design of 1.77 which is less appropriate, while the total average ease of use is 2.67, which means it is quite appropriate. So the results obtained were that as many as 30 respondents preferred product 3 with quite appropriate criteria. From the results of the products made, the coloring still needs to be improved so that they are more perfect and the designs are developed to be more varied so that they can be used as a reference for further research.

Lead (Pb²⁺) is a hazardous heavy metal commonly found in industrial wastewater and poses serious risks to human health and the environment due to its toxic and non-biodegradable nature. Therefore, an effective and environmentally friendly treatment method is required to reduce Pb²⁺ concentration in wastewater. This study aimed to evaluate the effect of pH and initial Pb²⁺ concentration on the adsorption capacity of ramie leaf (Boehmeria nivea) bioadsorbent activated with NaOH. The adsorption process was conducted using a batch system with pH variations of 4, 5, and 7 and initial Pb²⁺ concentrations of 20, 25, and 30 mg/L. The residual Pb²⁺ concentration was analyzed using Atomic Absorption Spectrophotometry (AAS), and the adsorption performance was evaluated based on removal efficiency and adsorption capacity (Qe). The results showed that pH and initial Pb²⁺ concentration significantly affected the adsorption performance. The optimum adsorption condition was obtained at pH 5, with a maximum removal efficiency of 99.20% and a total adsorption capacity of 18.56 mg/g. The increase in pH from 4 to 5 enhanced adsorption performance due to reduced competition between H⁺ and Pb²⁺ ions for active sites on the adsorbent surface. Increasing the initial Pb²⁺ concentration tended to increase adsorption capacity, although removal efficiency remained relatively stable due to the limited number of active adsorption sites. The Relative Standard Deviation (RSD) values ranged from 1.56% to 3.37%, indicating good precision and repeatability of the experimental data. These findings demonstrate that NaOH-activated ramie leaves have considerable potential as an effective, low-cost, and environmentally friendly bioadsorbent for Pb²⁺ removal from wastewater.

The continuous increase in paper consumption has a direct impact on waste accumulation and environmental degradation due to the exploitation of wood as the primary raw material. This study aims to design an innovative product called seed paper as a solution for managing paper and cardboard waste, transforming it into something more useful while supporting Sustainable Development Goal (SDG) No. 12 on responsible consumption and production. The production method involves several stages: processing waste into pulp, mixing it with chili seeds, followed by natural printing and drying. The analysis shows that both paper and cardboard waste can be processed into an effective planting medium, where the paper naturally decomposes and the embedded seeds germinate once planted. In terms of production costs, one batch of seed paper requires approximately Rp23.000 for the paper variant and cardboard variant. Technically, this process demonstrates that waste, which would otherwise accumulate in landfills, can be transformed into an innovative product that promotes reforestation while also carrying economic value through a structured calculation of the cost of goods sold.

Medical waste is a by-product of healthcare activities that may have negative impacts on human health and the environment if not properly managed. This study aims to examine strategic planning for medical waste management in healthcare facilities and evaluate the risk of environmental contamination in the digital era. The method used was a literature review by examining various relevant scientific sources. The findings indicate that medical waste management still faces several challenges, including non-compliance with established standards, limited human resources, and the risk of environmental pollution. The utilization of digital technologies such as the Internet of Things (IoT), Artificial Intelligence (AI), RFID, and Blockchain has the potential to improve the effectiveness of monitoring and managing medical waste. Therefore, strategic planning supported by digital technology, human resource capacity building, and regulatory compliance is essential for achieving safe and sustainable medical waste management.

The high volume of fishery waste often poses an environmental burden if not managed appropriately. Conversely, the circular economy concept offers sustainable solutions aligned with Maqasid Shariah principles in environmental preservation (Hifz al-Alam). This study aims to educate and implement the processing of fish waste into high-quality animal feed that meets halal standards (halalan thayyiban). This research employs a qualitative approach using the Asset-Based Community Development (ABCD) method. The stages include socializing the concept of Sharia circular economy, technical training on waste processing, and nutritional content testing of the feed. The findings indicate an 80% increase in community understanding regarding the economic value of waste. Technically, the fish waste processing successfully produced an alternative animal feed with high protein content, free from najis (impurity) through a purification process according to Islamic jurisprudence (fiqh). This education proves that the integration of circular economy and Sharia principles not only reduces environmental impact but also creates sustainable economic added value for local communities.

The high volume of fishery waste often poses an environmental burden if not managed appropriately. Conversely, the circular economy concept offers sustainable solutions aligned with Maqasid Shariah principles in environmental preservation (Hifz al-Alam). This study aims to educate and implement the processing of fish waste into high-quality animal feed that meets halal standards (halalan thayyiban). This research employs a qualitative approach using the Asset-Based Community Development (ABCD) method. The stages include socializing the concept of Sharia circular economy, technical training on waste processing, and nutritional content testing of the feed. The findings indicate an 80% increase in community understanding regarding the economic value of waste. Technically, the fish waste processing successfully produced an alternative animal feed with high protein content, free from najis (impurity) through a purification process according to Islamic jurisprudence (fiqh). This education proves that the integration of circular economy and Sharia principles not only reduces environmental impact but also creates sustainable economic added value for local communities.

This study aims to analyze the implementation of legal responsibility by goat farmers in managing waste from Etawa goat farming based on a circular economy model at Nusantara Farm, Sidoarjo. The study employs both normative juridical and empirical juridical approaches, with data collection techniques including literature review, interviews, and field observations.The results indicate that waste management is carried out through direct utilization, such as using livestock manure as organic fertilizer, selling waste, and distributing it to the surrounding community. These practices demonstrate that waste is not disposed of carelessly but rather reused, thereby creating economic and functional value.From a legal perspective, this condition reflects the fulfillment of the farmers' responsibilities in accordance with applicable laws and regulations, particularly in efforts to prevent environmental pollution. Furthermore, these waste management practices partially embody the principles of the circular economy, especially in terms of reuse.However, the current waste management practices remain conventional and are not yet optimally integrated. Therefore, there is a need to develop a waste management model based on an integrated closed-loop system to enhance the economic value of waste while ensuring more effective environmental sustainability.

This study aims to analyze the environmental impact of waste generated by the gecko processing home industry based on environmental law regulations in Indonesia. In its processing activities such as lizards and snakes. These activities produce organic waste in the form of animal organs, blood, body fluids, and other waste in the materials that are later utilized as catfish feed. The research method used is qualitative with a normative juridical approach, statutory approach, and literature study. Data were obtained from laws and regulations , scientific journal, and environmental law literature. The results of the study indicate that the disposal of waste into rivers can increase Biological Oxyen Demand and Chemical Oxygen Demand (COD) levels, cause unpleassant odors, and reduce water quality and public health. The utilization of waste as catfish feed can reduce the amount of waste disposed of, however, it still requires hygienic processing to prevent biological risks. From the perspective of environmental law, the direc disposal of the waste into rivers is not in accordance with Law No. 32 of 2009 concerning Environmental Protection and Management and Government Regulation No. 22 of 2021 concerning the Implementation of Environmental Protection and Management. Therefore, better waste management is needed through proper waste treatment, increased awareness among business actors, and goverment supervision so that home industries can operate sustainably and in an environmentally friendly manner

Primary healthcare centers generate both medical and non-medical waste that may pose environmental and public health risks if not properly managed. This study aims to describe the waste management practices at Kesumadadi Public Health Center, Bekri Subdistrict, Central Lampung Regency, in 2025. This research employed a descriptive design conducted in May 2025 at the Kesumadadi Public Health Center. Data were collected through observation and interviews as primary data and secondary data from the health center. Data processing included editing, coding, tabulating, and cleaning, while data analysis was carried out using checklists and questionnaires. The results showed that the segregation of medical and non-medical solid waste was not fully in accordance with standards, waste transportation to temporary storage areas did not use trolleys and lacked designated routes, there was no wastewater treatment facility for liquid waste, and the use of personal protective equipment by staff was not optimal. Waste management practices at the Kesumadadi Public Health Center have not met the required standards, particularly in waste segregation, transportation, liquid waste treatment, and occupational safety, therefore improvements are needed to reduce environmental and health risks.

Perkembangan ilmu pengetahuan dan teknologi yang pesat di Indonesia telah mendorong pertumbuhan industri secara signifikan. Meskipun memberikan dampak positif terhadap peningkatan perekonomian masyarakat, pertumbuhan industri juga menimbulkan dampak negatif apabila tidak diiringi dengan pengelolaan lingkungan yang baik, seperti pencemaran dan kerusakan lingkungan hidup. Salah satu solusi yang dapat diterapkan dalam mengurangi dampak tersebut adalah pengelolaan limbah cair melalui sistem Instalasi Pengolahan Air Limbah (IPAL). PT. X, sebagai perusahaan BUMN, turut berkontribusi dalam pengelolaan lingkungan melalui penerapan IPAL. Fokus IPAL di PT. X meliputi perencanaan dan rekayasa instalasi, audit dan inspeksi sistem air, serta monitoring dan pengujian kualitas limbah, khususnya limbah domestik. Limbah domestik, yang berasal dari aktivitas rumah tangga seperti air bekas mandi, mencuci, dan dapur, diolah melalui metode IPAL agar dapat dimanfaatkan kembali untuk keperluan non-konsumsi, seperti penyiraman tanaman dan irigasi. Pengolahan ini menjadi langkah strategis dalam mendukung pembangunan industri yang ramah lingkungan dan berkelanjutan.

Perkembangan ilmu pengetahuan dan teknologi yang pesat di Indonesia telah mendorong pertumbuhan industri secara signifikan. Meskipun memberikan dampak positif terhadap peningkatan perekonomian masyarakat, pertumbuhan industri juga menimbulkan dampak negatif apabila tidak diiringi dengan pengelolaan lingkungan yang baik, seperti pencemaran dan kerusakan lingkungan hidup. Salah satu solusi yang dapat diterapkan dalam mengurangi dampak tersebut adalah pengelolaan limbah cair melalui sistem Instalasi Pengolahan Air Limbah (IPAL). PT. X, sebagai perusahaan BUMN, turut berkontribusi dalam pengelolaan lingkungan melalui penerapan IPAL. Fokus IPAL di PT. X meliputi perencanaan dan rekayasa instalasi, audit dan inspeksi sistem air, serta monitoring dan pengujian kualitas limbah, khususnya limbah domestik. Limbah domestik, yang berasal dari aktivitas rumah tangga seperti air bekas mandi, mencuci, dan dapur, diolah melalui metode IPAL agar dapat dimanfaatkan kembali untuk keperluan non-konsumsi, seperti penyiraman tanaman dan irigasi. Pengolahan ini menjadi langkah strategis dalam mendukung pembangunan industri yang ramah lingkungan dan berkelanjutan.

Industrial waste management is an essential part of environmental protection and management efforts in Indonesia. Industrial development contributes positively to economic growth, but it also creates risks of environmental pollution when waste is not managed properly and in accordance with legal regulations. This study aims to analyze legal regulations concerning industrial waste management in Indonesia, evaluate the compliance level of PT Selatan Jadi Jaya with applicable laws and regulations, and examine law enforcement efforts and accountability mechanisms for violations affecting the environment. The research applies an empirical normative method using statutory and field approaches. Data were collected through literature studies of legislation, scientific journals, and legal doctrines, supported by observations and interviews with related parties. The findings show that industrial waste management has been comprehensively regulated under Law Number 32 of 2009 and Government Regulation Number 22 of 2021. However, implementation still encounters obstacles such as weak supervision, limited legal awareness among business actors, and economic considerations affecting corporate compliance. PT Selatan Jadi Jaya has fulfilled several administrative obligations but still requires improvement in substantive waste management practices. Effective supervision, consistent law enforcement, and stronger corporate commitment to sustainability and environmental responsibility are therefore necessary to achieve optimal environmental protection.

Kemuning Lor Village, Jember Regency, has significant potential in the agricultural and livestock sectors; however, the utilization of agricultural, livestock, and household waste remains suboptimal. Waste such as rice straw, animal manure, and household refuse is generally not processed effectively, leading to environmental pollution and the loss of potential economic value.

The waste problem in Indonesia has now reached a critical stage and has become an increasingly serious environmental issue. The ever-increasing volume of waste is not being managed effectively, leading to various negative impacts, particularly environmental pollution. This study aims to examine the state of waste management in Indonesia and its impact on water pollution from the perspective of the Sustainable Development Goals (SDGs). The method used is descriptive qualitative research through a literature review utilizing various sources such as journals, official reports, and legislation. The results indicate that the majority of waste originates from household activities, while management practices remain rudimentary, such as the “collect-transport-dispose” method and open dumping. This situation leads to waste accumulation, which contributes to water pollution, deteriorating environmental quality, and increased health risks for the community. Furthermore, suboptimal waste management also poses a challenge in achieving sustainable development goals, particularly regarding responsible consumption and access to clean water and sanitation. Therefore, improved efforts are needed through the application of the reduce, reuse, recycle (3R) principles, increased public awareness, and the active role of the government and the private sector in providing a sustainable waste management system. With the right measures, it is hoped that the waste problem in Indonesia can be reduced and the environment preserved.

Proyek konstruksi Rumah Sakit Perguruan Tinggi Negeri (RSPTN) Universitas X menghasilkan berbagai jenis Limbah B3 dari aktivitas pembangunan, operasional lapangan, dan perawatan peralatan. Limbah tersebut memiliki sifat berbahaya sehingga memerlukan pengelolaan sesuai regulasi untuk mencegah pencemaran dan risiko kesehatan. Studi ini bertujuan mengidentifikasi jenis Limbah B3 yang timbul serta menilai kesesuaian pengelolaannya di Tempat Penyimpanan Sementara (TPS) dengan PP No. 22 Tahun 2021, Permen LH No. 14 Tahun 2013, dan Permen LHK No. 20 Tahun 2020. Limbah yang dihasilkan meliputi oli bekas, cat beserta wadahnya, solar bekas, bahan pelapis kedap air, dan thinner. Pengemasan dan pelabelan sudah sesuai ketentuan, namun fasilitas TPS masih perlu ditingkatkan seperti penutupan bangunan, ketahanan lantai, fasilitas keselamatan, dan kerapian penyimpanan. Pemindahan limbah dilakukan melalui pihak berizin seperti DLH. Secara umum, pengelolaan Limbah B3 cukup baik, tetapi masih diperlukan peningkatan sarana TPS agar lebih aman dan sesuai persyaratan.

Proyek konstruksi Rumah Sakit Perguruan Tinggi Negeri (RSPTN) Universitas X menghasilkan berbagai jenis Limbah B3 dari aktivitas pembangunan, operasional lapangan, dan perawatan peralatan. Limbah tersebut memiliki sifat berbahaya sehingga memerlukan pengelolaan sesuai regulasi untuk mencegah pencemaran dan risiko kesehatan. Studi ini bertujuan mengidentifikasi jenis Limbah B3 yang timbul serta menilai kesesuaian pengelolaannya di Tempat Penyimpanan Sementara (TPS) dengan PP No. 22 Tahun 2021, Permen LH No. 14 Tahun 2013, dan Permen LHK No. 20 Tahun 2020. Limbah yang dihasilkan meliputi oli bekas, cat beserta wadahnya, solar bekas, bahan pelapis kedap air, dan thinner. Pengemasan dan pelabelan sudah sesuai ketentuan, namun fasilitas TPS masih perlu ditingkatkan seperti penutupan bangunan, ketahanan lantai, fasilitas keselamatan, dan kerapian penyimpanan. Pemindahan limbah dilakukan melalui pihak berizin seperti DLH. Secara umum, pengelolaan Limbah B3 cukup baik, tetapi masih diperlukan peningkatan sarana TPS agar lebih aman dan sesuai persyaratan.

Self-Compacting Concrete (SCC) requires a high cement content, which contributes to increased carbon emissions; therefore, this study evaluates the effect of partial cement substitution with fly ash (5%, 10%, and 15%) and the addition of Polyethylene Terephthalate (PET) waste (0.5% and 0.7%) on the mechanical properties of SCC with a target strength of f’c 30 MPa. The research employed laboratory experimental methods, including fresh concrete tests (slump flow, L-box, and V-funnel) and hardened concrete tests (compressive, tensile, and flexural strength) at 7 and 28 days. The results indicate that fly ash substitution enhances compressive strength, with the highest value of 49.59 MPa achieved at 5% fly ash at 28 days, exceeding normal concrete (34.73 MPa). The addition of PET tends to reduce compressive strength due to increased porosity; however, it significantly improves flexural strength, as the combination of 5% fly ash and 0.5% PET achieved 4.7 MPa compared to 2.9 MPa for normal concrete. Overall, the combination of fly ash and PET waste shows potential for application in structural elements requiring high flexural performance.