Publication Search

This study aimed to determine the effect of coffee husk waste application and shallot extract soaking on the growth of cat’s whiskers (Orthosiphon aristatus) cuttings. The research employed a factorial Randomized Block Design (RBD) consisting of two factors with 48 experimental plots. The first factor was the application of coffee husk waste, symbolized as “L,” with four treatment levels: L0 = 0 g/polybag (without coffee husk waste), L1 = 75 g/polybag, L2 = 150 g/polybag, and L3 = 225 g/polybag. The second factor was shallot extract soaking, symbolized as “B,” with four treatment levels: B0 = 0 ml/L of water, B1 = 5 ml/L of water, B2 = 10 ml/L of water, and B3 = 15 ml/L of water. Thus, there were 16 treatment combinations with three replications. The observed parameters included time to shoot emergence, number of shoots, plant height, number of leaves, leaf area, and survival percentage. The results showed that the application of coffee husk waste and shallot extract soaking had no significant effect on the growth of cat’s whiskers (Orthosiphon aristatus) cuttings across all observed parameters.

Seren Village has abundant organic waste potential, particularly banana peel waste generated from banana-processing MSME activities and wood ash resulting from household firewood combustion. To date, this waste has not been optimally utilized and is often discarded, thereby posing potential environmental problems. This study aims to process banana peel waste and wood ash into an innovative, environmentally friendly shoe polish made from natural materials, while also enhancing the economic value and welfare of the community. The research employed a descriptive qualitative method with a case study approach. Data were collected through observation, interviews, and documentation involving the women’s Family Welfare Empowerment Group (PKK) of Seren Village as the target participants. The shoe polish production process includes drying and grinding banana peels, mixing them with a wood ash solution that functions as a natural coloring agent, adding supporting materials, and heating the mixture until a ready-to-use shoe polish is obtained. The results indicate that the shoe polish produced from banana peels and wood ash has a solid texture, is slightly coarse, non-glossy, and has a relatively fast drying time of approximately one minute. In addition, the product shows good resistance to water splashes and does not damage the surface of shoes. The use of natural ingredients makes this shoe polish safer for health. The utilization of this waste has the potential to support MSME development, reduce environmental pollution, and sustainably improve the welfare of the Seren Village community.

Cassava is one of the strategic agricultural commodities in Indonesia, contributing significantly to national production, particularly in several major producing provinces. In addition to the challenge of declining harvested areas, cassava processing activities also generate agricultural waste that poses environmental risks. In Purwasari Village, Dramaga Subdistrict, Bogor Regency, household-scale cassava processing industries produce solid waste in the form of cassava peels, which are not optimally managed and are commonly discarded in the surrounding environment. This cassava waste has the potential to cause environmental pollution, unpleasant odours, and negative impacts on public health. One sustainable alternative for managing this cassava waste is the use of cassava peels as a raw material for composting. This study aimed to identify problems associated with cassava peel waste and to assess members of the Taruna Tani Millennial Farmer Group's interest in compost production using cassava peels. The research was conducted from December 2024 to June 2025 using a community-based assistance approach. Data was collected through interviews and questionnaires involving 20 respondents. The results showed that the main problems associated with cassava peel waste include waste accumulation, limited processing facilities, and low community awareness. Farmers’ interest in cassava peel composting was generally categorized as high, with an average score of 77%, although several indicators remained at a moderate level. Extension activities and hands-on demonstrations were proven to enhance farmers’ understanding, interest, and participation. With sustained educational support and adequate facilities, the use of cassava peel compost has strong potential to promote environmentally friendly, sustainable agricultural waste management.

Banana blossoms are often considered waste and rarely utilized by the community, even though this material is easily obtained, has nutritional value, and has the potential to be processed into economically valuable food products. This community service activity was carried out in Melati II Village, Pasar 6, Pala Hamlet, Perbaungan District, with the aim of providing assistance to the community in processing banana blossoms into chips as an alternative snack. The implementation method included a brief counseling on the potential and benefits of banana blossoms, training in processing techniques, hands-on practice in making chips, and a simple evaluation of the quality of the resulting product. The results of the activity showed that the community was able to process banana blossoms into chips with a crispy texture, acceptable taste, and an attractive appearance. In addition to improving community skills and creativity, this activity also helped reduce organic waste and opened up sustainable household-scale business opportunities for the local community.

This study aims to evaluate the effectiveness of various doses of 6.25% Poly Aluminium Chloride (PAC) and 0.1% polymer flocculant in reducing Total Suspended Solids (TSS) and assessing pH changes in coal stockpile wastewater at PT PLN Nusantara Power UP Paiton Unit 9. Stockpile wastewater typically contains high levels of suspended solids originating from water spray activities that carry fine coal particles. The coagulation–flocculation process was performed using the jar test method with PAC dosages of 35 ppm, 50 ppm, and 65 ppm, along with flocculant dosages of 6 ppm and 7 ppm. pH and TSS were analyzed before and after treatment to assess process effectiveness. The results indicate that a PAC dosage of 35 ppm combined with a 6 ppm flocculant achieved the highest TSS removal efficiency of 98.15%. Increasing PAC dosage resulted in reduced performance due to overdosing effects, leading to charge destabilization and impaired floc formation. These findings highlight the importance of optimizing coagulant dosage to improve stockpile wastewater quality for safe reuse in operational activities.

Increasing in energy demand and limited fossil fuel reserves have driven the use of environmentally friendly alternative energy sources. This study aims to analyze the effect of pyrolysis temperature variations on the quality of biopellets made from bagasse and coffee husks. The materials were prepared in a 50:50 ratio with the addition of 15% tapioca flour as a binder. The pyrolysis process was carried out at temperatures of 450°C, 500°C, and 550°C for 120 minutes in oxygen-free conditions. The biochar resulting from pyrolysis was formed into biopellets, which were then tested for proximate composition, calorific value, and combustion rate. The results showed that an increase in pyrolysis temperature had a significant effect on the characteristics of the biopellets. A temperature of 550°C produced the lowest moisture content (8.436%), the highest fixed carbon content (62.191%), the highest calorific value (6293 cal/g), and the highest combustion rate (0.05789 g/sec). Conversely, ash content increased with rising temperature, while volatile matter content decreased. Thus, the best biopellets were obtained at a temperature of 550°C. This study confirms the potential of bagasse and coffee husks as raw materials for biopellets through pyrolysis temperature optimization to support the development of sustainable biomass energy.

Expansive clay soil is soil that can expand and contract significantly in response to changes in soil moisture content. This study used an experimental method to stabilize expansive clay soil using a mixture of gypsum waste powder, which was tested using the Atterberg test, the Unconfined Compression Strength test, and the California Bearing Ratio test with mixture variations of 0%, 10%, 20%, and 30%. The results showed that the addition of gypsum waste powder could reduce the expansivity level of the soil from a very high level of 42% to a moderate level of 20%, increase the value in the Unconfined test at a maximum mixture of 10%, and increase the value in the CBR test at a maximum mixture of 30%. Based on the above description, this study aims to determine the extent of the effect of gypsum waste powder on expansive clay soil on the bearing capacity and compressive strength of expansive clay soil.

Latar Belakang: Pendekatan kewirausahaan sosial yang diterapkan dalam proyek ini mencerminkan sinergi antara inovasi, kepedulian sosial, dan keberlanjutan lingkungan. Dengan memberdayakan masyarakat lansia untuk menciptakan produk yang bermanfaat, kegiatan ini berkontribusi pada tercapainya beberapa tujuan pembangunan berkelanjutan (SDGs), seperti pengurangan limbah, pengentasan kemiskinan, dan pemberdayaan komunitas. Tujuan: Mengurangi limbah plastik serta meningkatkan keterampilan dan kemandirian ekonomi lansia melalui pembuatan gantungan kunci berbahan dasar limbah plastik. Metode: Pemberdayaan Masyarakat ini melibatkan warga Panti Perlindungan dan Rehabilitasi Sosial Lanjut Usia “Budi Sejahtera” Martapura. Kegiatan dilaksanakan melalui pendekatan yang komprehensif berupa pelatihan partisipatif dengan tahapan pengumpulan bahan baku dari masyarakat, penyediaan peralatan, pembentukan tim kerja, serta pelatihan kewirausahaan yang meliputi edukasi kepada lansia mengenai pentingnya daur ulang sampah, proses pemilahan, pembersihan, pemotongan, pencampuran resin, pencetakan, hingga finishing produk gantungan kunci. Hasil: Adanya peningkatan keterampilan dalam mengolah limbah menjadi produk bernilai, serta terbukanya peluang ekonomi melalui penjualan produk. Dari sisi sosial, kegiatan ini memperkuat rasa kebersamaan dan meningkatkan kepercayaan diri lansia, sementara dari sisi lingkungan, berkontribusi nyata dalam pengurangan sampah plastik dan pencemaran lingkungan. Kesimpulan: kegiatan sociopreneur ini membuktikan bahwa melalui pendekatan inovatif berbasis partisipasi, lansia dapat diberdayakan untuk menghasilkan karya yang bermanfaat, ramah lingkungan, sekaligus bernilai ekonomi.

This study is an experimental research with a descriptive qualitative approach aimed at developing innovative hair styling in the form of fantasy buns made from rice straw waste as an environmentally friendly creative expression. The research was conducted through direct experimentation in creating fantasy hair buns using rice straw, followed by product feasibility and aesthetic assessments. The feasibility test was carried out by expert validators using the expert judgement method, while a public test was conducted to measure the level of interest and acceptance of the community through questionnaires distributed via Google Form. The results indicate that rice straw is suitable as an alternative material for creating fantasy hair buns due to its strong texture, easy shaping properties, and the ability to produce unique and artistic visual effects. These findings are expected to contribute to the utilization of agricultural waste into creative and valuable products in the field of hair styling.

Salah satu bentuk pengolahan limbah menjadi energi yang berasal dari limbah padat perkotaan adalah sampah bahan bakar turunan atau Refuse Derived Fuel (RDF). Terdapat berbagai teknologi pengeringan yang biasanya digunakan untuk pengeringan RDF. Contoh penerapannya adalah oil tube rotary dryer sebagai alternatif dari steam tube rotary dryer karena sejumlah alasan utama. Pertama, penggunaan oil engine sebagai material penghantar panas tidak membutuhkan tekanan tinggi seperti pada steam tube rotary dryer sehingga komposisi desain yang tidak serumit steam tube rotary dryer. Penelitian ini dilakukan untuk mengetahui perancangan dan analisis kekuatan struktur mesin oil tube rotary dryer yang dilakukan melalui software Solidworks. Cara kerja mesin dimulai dari pemanasan thermal oil di unit pemanas hingga mencapai suhu operasi yang diinginkan. Oil panas kemudian disirkulasikan secara tertutup ke dalam tube di dalam drum pengering. Pada saat yang sama, RDF dengan kadar air awal 55% dimasukkan melalui inlet housing ke dalam shell. Suhu yang bekerja pada oil untuk memanaskan sekitar 150°C, jumlah total tube 65 buah berdiameter 1,25 inch, dan panjang pipa 10 m yang tersusun di dalam shell. Hasil analisis struktur mesin oil tube rotary dryer berdasarkan simulasi didapatkan stress (von mises) dengan nilai tertinggi 9,371 × 108 N/m^2. Sedangkan nilai terendah 9,628 × 103 N/m^2. Nilai tertinggi dari hasil simulasi tersebut terjadi pada sudut tajam bagian support roller yang tidak terdapat kontak, sehingga hal ini dapat diabaikan karena merupakan stress singularity. Hasil simulasi displacement  dengan  nilai tertinggi 1,026 × 101 N/m^2. Sedangkan nilai terendah 1,000 × 10-30 N/m^2. Nilai tertinggi dari hasil simulasi tersebut merupakan penerapan dari gaya centrifugal yang terjadi pada drum/shell rotary. Hasil simulasi Safety factor yaitu mengacu pada rata-rata probe result adalah 2,3. Sehingga dari hasil simula

This study aims to determine the effectiveness of goat manure and liquid organic fertilizer made from coffee husk waste on the growth of Java tea (Orthosiphon aristatus) cuttings. The study used a factorial Randomized Block Design (RBD) consisting of two factors with 48 plots. The first factor was the application of goat manure, symbolized as “S,” with four treatment levels: S0 (without goat manure), S1 (250 g/polybag), S2 (350 g/polybag), and S3 (450 g/polybag). The second factor was the application of liquid organic fertilizer made from coffee husk waste, symbolized as “K,” with four treatment levels: K0 (0 ml/L water/polybag), K1 (30 ml/L water/polybag), K2 (60 ml/L water/polybag), and K3 (90 ml/L water/polybag). Thus, there were 16 treatment combinations with three replications. The parameters observed in this study were the time of shoot emergence, number of shoots, shoot length, number of leaves, plant height, and survival percentage. The results showed that the application of goat manure and liquid organic fertilizer from coffee husk waste on the growth of Java tea (Orthosiphon aristatus) cuttings had no significant effect on all observed parameters.

The purpose of this training is to provide understanding, competence and skills for training participants about the utilization of waste from broiler farms (litter) to be used as organic fertilizer, so that it can increase the income of farmers and can reduce negative impacts on the environment. The training method includes lectures, discussion, visits to broiler farm locations and practical work on making organic fertilizer for 30 training participants. Lectures and practical work on making organic fertilizer were carried out at the Animal Production Laboratory of the Animal Husbandry Department, Faculty of Agriculture, Pattimura University. The results of the activity showed an increase in understanding of the management of waste from broiler farms to be managed properly. The conclusion of the Community Service Program Training on Making Organic Fertilizer Using Broiler Manure is as follows: This training succeeded in increasing 92,56 percent the knowledge, competence and skills of participants regarding the processing of broiler waste (litter) into quality organic fertilizer; This training provides an effective solution to overcome the problem of broiler waste (litter) accumulation in the livestock environment; This training changed the perspective of training participants on producing and commercializing organic fertilizer, so that it can increase the income of farmers.

Desa Karangrau di Kecamatan Banyumas memiliki lahan subur yang sebagian besar ditanami durian hasil persilangan lokal dan Musangking. Pertanian, terutama budidaya durian, menjadi mata pencaharian utama warga. Para petani tergabung dalam Gapoktan Sumber Makmur dan KWT Setia Tani yang berperan dalam pengelolaan hasil panen. Namun, terdapat beberapa kendala seperti keterbatasan pengetahuan teknik budidaya modern, perawatan tradisional tanpa dukungan teknologi, serta sistem irigasi yang belum optimal. KWT Setia Tani juga menghadapi tantangan dalam pengolahan produk turunan durian akibat minimnya pengetahuan diversifikasi. Padahal, durian berpotensi diolah menjadi roti, selai, tepung, hingga pemanfaatan limbah sebagai bahan bakar alternatif. Melalui peningkatan pengetahuan, teknologi, dan inovasi pengolahan, Desa Karangrau berpeluang menjadi sentra durian unggulan yang mampu meningkatkan nilai tambah dan kesejahteraan masyarakatnya.Desa Karangrau di Kecamatan Banyumas memiliki lahan subur yang sebagian besar ditanami durian hasil persilangan lokal dan Musangking. Pertanian, terutama budidaya durian, menjadi mata pencaharian utama warga. Para petani tergabung dalam Gapoktan Sumber Makmur dan KWT Setia Tani yang berperan dalam pengelolaan hasil panen. Namun, terdapat beberapa kendala seperti keterbatasan pengetahuan teknik budidaya modern, perawatan tradisional tanpa dukungan teknologi, serta sistem irigasi yang belum optimal. KWT Setia Tani juga menghadapi tantangan dalam pengolahan produk turunan durian akibat minimnya pengetahuan diversifikasi. Padahal, durian berpotensi diolah menjadi roti, selai, tepung, hingga pemanfaatan limbah sebagai bahan bakar alternatif. Melalui peningkatan pengetahuan, teknologi, dan inovasi pengolahan, Desa Karangrau berpeluang menjadi sentra durian unggulan yang mampu meningkatkan nilai tambah dan kesejahteraan masyarakatnya.

This community service article presents the implementation of the GELORA outreach and training program conducted in Sebanen Village, Jember, Indonesia, focusing on the promotion of low-cost and eco-friendly fermented feeds formulated from locally available agricultural residues such as papaya leaves, rice bran, molasses, and EM4. The program aimed to strengthen the capacity of smallholder catfish farmers and the village enterprise (BUMDes) through a series of integrated activities including a rapid needs assessment, hands-on training sessions, technical mentoring, and knowledge dissemination. As a result, participants demonstrated improved technical skills in household-scale feed formulation and fermentation, a stronger understanding of sustainable and circular economy principles, and an increased willingness to adopt environmentally friendly aquaculture practices. Moreover, follow-up mentoring groups were established to ensure program continuity and local innovation. This participatory model effectively combines community engagement with scientific evidence in aquaculture nutrition and is suitable for replication in other rural aquaculture development contexts.

Catfish dregs fish bone gelatin extraction still has the potential to be utilized by processing it into flour. Catfish dregs fish bone gelatin extraction can be used as an additional source of calcium in mango fruit leather products. This study goals to know the effect of adding catfish bone meal on the chemical also organoleptic characteristics of mango fruit leather. This study used a CRD with a single factor, the addition of catfish bone gelatin waste flour with 5 levels of treatment, including; P0 (control), P1 (2.5 grams), P2 (5 grams), P3 (7.5 grams), also P4 (10 grams). The variables observed included water content, reducing sugar content, vitamin C content, calcium content also organoleptic properties (color, aroma, texture, taste also overall). The results of adding catfish bone flour had a significant effect on fruit leather moisture, vitamin c, also calcium levels (p <0.05). Treatment P4 produced the best results, especially in terms of water content, vitamin C content also calcium content, while P2 was the best treatment in terms of organoleptic parameters. The results of the chemical characteristics with the best treatment had a vitamin C content of 51.3 mg/100, a water content of 12.6% (ww) and a calcium content of 1.82% and from organoleptics an overall score of 3.77.

Used cooking oil is a household waste that may pollute the environment and harm human health if disposed of or reused improperly. This community service program aimed to provide a waste management solution while enhancing the community’s economic skills through training on producing aromatherapy candles from used cooking oil. The implementation method included awareness sessions on the hazards of used cooking oil, technical training using a learning by doing approach, and assistance in production and marketing. A total of 30 participants from the Family Welfare Movement (PKK) took part in the program. The results indicated improved knowledge and skills, the production of approximately 50 aromatherapy candles with lavender, rose, and vanilla scents, and the establishment of a community group committed to continuing independent production. The program contributed positively to the environment by reducing around 15 liters of waste oil per month and created new entrepreneurial opportunities for residents. Therefore, this initiative can serve as a sustainable community empowerment model based on circular economy principles.

Household organic waste production in Thekelan Hamlet has increased along with population density and agricultural activities, potentially having negative impacts on the environment and health. However, this waste actually has the potential to be processed into environmentally friendly products with economic value, one of which is eco-enzymes. This community service activity aims to increase community awareness and skills in processing organic waste into eco-enzymes through a participatory approach, technical training, and live demonstrations. The main partners in this activity are housewives and village environmental cadres, who are the main targets for introducing organic waste processing techniques. During the implementation, participants were trained on the benefits and how to produce eco-enzymes independently. This activity not only provided an understanding of the eco-enzyme production process but also motivated participants to produce eco-enzymes independently at home. The results of this activity showed a significant increase in understanding of the benefits of eco-enzymes as an environmentally friendly product, which can be used as a natural cleaner and organic fertilizer. In addition, participants also began to demonstrate the initiative to produce eco-enzymes independently, which has the potential to reduce household organic waste and increase economic value through the utilization of this product. The findings from this activity demonstrate that community-based waste management can not only be an environmentally friendly solution but also has high economic value. This empowerment model can serve as a sustainable model and be implemented in other areas, providing extensive benefits to the environment and the local economy. Furthermore, this activity introduced the concept of sustainable waste management to the community, providing them not only with new knowledge about organic waste processing but also with the opportunity to apply these techniques in their daily lives.

Latar belakang: Hemodialisa merupakan suatu teknologi canggih yang digunakan sebagai alternatif pengganti fungsi ginjal untuk menyaring produk-produk limbah metabolik atau racun tertentu dari darah, seperti air, natrium, kalium, hidrogen, urea, dan zat lainnya dengan memanfaatkan membran semipermeabel. Salah satu faktor yang mempengaruhi hemodialisa ialah akses vaskuler, akses vaskuler yang berfungsi dengan baik dapat digunakan untuk jangka Panjang yang adekuat dapat menghasilkan aliran darah yang lancar serta meminimalkan komplikasi. Tujuan: dilakukan penelitian ini ialah untuk mengetahui bagaimana gambaran pengetahuan dan perawatan akses vaskuler pada pasien hemodialisa. Metode: Penelitian ini menggunakan metode deskriptif dengan pendekatan potong lintang (cross sectional). Sebanyak 90 pasien hemodialisa terlibat sebagai responden yang dipilih melalui teknik pengambilan sampel total. Data dikumpulkan dengan menggunakan kuesioner yang mengukur pengetahuan dan perawatan akses vaskuler. Dalam menganalisis data, digunakan uji distribusi frekuensi. Hasil: penelitian ini menjelaskan bahwasannya mayoritas responden mempunyai tingkat pengetahuan akses vaskuler kategori baik sebanyak 71 (78,9%), sedangkan sebagian besar memiliki Tingkat perawatan akses vaskuler kategori baik sebanyak 69 (76,7%). Adanya Gambaran pengetahuan dan perawatan akses vaskuler yang baik pada pasien hemodialisa sehingga, penelitian ini dapat digunakan perawat dalam intervensi keperawatan untuk lebih meningkatkan pengetahuan dan perawatan akses vaskuler pasien dalam hemodialisa.

The UNS Community Service Program (KKN) Batch 68 was conducted from July to August 2025 in Jaten Village, Karanganyar Regency, Central Java. This program focused on educating the community about the utilization of organic waste, particularly dragon fruit (Hylocereus spp.) peel, which is generally underutilized. Dragon fruit peel has the potential to be developed into functional food products as it contains fiber, vitamins, and pectin. Through the “Dragon Fruit Peel Waste Management into Sauce” workshop, participants were provided with knowledge and skills to process organic waste into value-added products while supporting household food security. The implementation methods included counseling, demonstrations, and hands-on practice. The results showed an increase in community understanding of food waste management, improved skills in processing dragon fruit peel into sauce, and the establishment of communication networks among village cadres for program sustainability. This innovation also holds potential to be developed into micro-enterprises in the healthy food sector.

Solid waste from the tapioca processing industry, which is based on cassava (Manihot esculenta), is a medium rich in organic matter, particularly starch, that supports the growth of various types of microorganisms, especially fungi and bacteria. This study aims to isolate and observe the morphology of microorganisms from solid waste of cassava from the tapioca industry using Potato Dextrose Agar (PDA) medium in a series of pharmaceutical microbiology practicum. Waste samples were taken from the tapioca processing site, then underwent a serial dilution process and inoculation into PDA medium, which was incubated at 28–30°C for 5 days. The isolation results showed the growth of microorganisms with diverse colony morphologies, which are suspected to originate from the genera Aspergillus, Penicillium, and Rhizopus, based on macroscopic and microscopic characteristics. The presence of these microorganisms indicates the potential utilization of cassava waste as a source of microbial isolates for biotechnological and pharmaceutical applications, such as enzyme production and development of bioactive compounds. This practicum activity also contributes to increasing students' understanding of isolation techniques, microorganism characterization, and their role in biological-based waste management.