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The problem of urban flooding is a growing issue due to high population density, increasing volumes of plastic waste, and the reduction of water absorption areas. The use of conventional paving blocks, which are impermeable, further exacerbates flooding conditions because they do not allow water to infiltrate into the soil. This study aims to develop an innovative plastic waste-based paving block incorporating rice straw and sugarcane bagasse, along with the integration of phytoremediation concepts as a solution for urban flood mitigation. The method employed was an experimental approach involving the following stages: material preparation, plastic incineration, material mixing, molding, and testing of water absorption capacity and compressive strength. The results showed that paving blocks with a combination of plastic waste, rice straw, and sugarcane bagasse had the highest water absorption rate of 34% and compressive strength of 21 kg/cm², meeting SNI standards. The addition of natural materials containing silica was proven to enhance the material’s porosity and strength. Additionally, the application of phytoremediation using water hyacinth has the potential to improve the quality of water seeping into the soil. Thus, this phytoremediation-based paving block innovation can serve as an effective alternative solution to reduce flood risks while supporting sustainable waste management and environmental stewardship.

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.

This study aims to analyze the production process, marketing strategies, and environmental impacts of sugarcane brown sugar agroindustry at the household scale, using the Haeruddin enterprise located in Latellang Village, Patimpeng District, Bone Regency as a case study. A descriptive qualitative approach was employed, with data collected through in-depth interviews, participatory observation, and document analysis. The results show that the enterprise manages approximately 50 hectares of sugarcane land with productivity ranging from 30–60 tons per hectare, which is below the national average. The production capacity reaches 1–2 tons of sugarcane per day, producing approximately 1 ton of brown sugar daily, and involves local labor in cultivation and processing activities. Marketing is conducted through direct sales and local distributors, with prices ranging from IDR 8,000–10,000 per kilogram, without the use of digital promotion or modern retail channels. From an environmental perspective, the production process generates solid, liquid, and gaseous waste; however, solid waste in the form of bagasse is reused as fuel, while liquid waste and combustion residues are only partially managed. These findings indicate that while the enterprise contributes to employment and the local rural economy, improvements in production efficiency, marketing strategies, and environmental management are required to enhance competitiveness and sustainability. This study provides practical insights for the development of sustainable household-scale sugarcane brown sugar agroindustries in rural areas.

Acid mine drainage (AMD) is one of the major environmental problems arising from coal mining activities. AMD is formed through the oxidation of sulfide minerals, resulting in acidic water with high concentrations of dissolved heavy metals. This condition is characterized by elevated levels of Fe, Mn, and total suspended solids (TSS), which, if left untreated, can pollute nearby water bodies, damage aquatic ecosystems, and pose risks to human health. Therefore, effective, eco-friendly, and low-cost treatment methods are needed to minimize the negative impacts of AMD. This study aims to investigate the effect of activated carbon derived from sugarcane bagasse as an adsorbent for reducing Fe, Mn, and TSS levels in AMD at the sump of PT Alreksa Bara Mitra. The selection of sugarcane bagasse is based on its abundance as an agro-industrial waste and its high lignocellulosic content, making it a potential raw material for activated carbon. The research involved the preparation of activated carbon through carbonization and activation processes, followed by its application to AMD samples with variations in adsorbent dosage and contact time. Laboratory analyses were conducted to measure the concentrations of Fe, Mn, and TSS before and after treatment. The results showed that sugarcane bagasse-based activated carbon significantly reduced Fe, Mn, and TSS concentrations. The highest removal efficiencies were achieved under optimum conditions, reaching 93.14% for Fe, 95.05% for Mn, and 85.04% for TSS. These findings demonstrate that activated carbon from sugarcane bagasse has a strong adsorption capacity for dissolved metals and suspended solids in AMD. In conclusion, sugarcane bagasse-derived activated carbon has potential as an environmentally friendly and cost-effective alternative for AMD treatment, while simultaneously providing added value to agro-industrial waste. This research is expected to serve as a reference for the development of more sustainable mine wastewater treatment methods.

Internal combustion engines generate thermal energy through the combustion of an air-fuel mixture. The incoming air must be filtered, as it contains impurities and particles. While air filters are commonly made from paper, they can also be developed using organic waste materials such as sugarcane bagasse and rice husk. This study aims to analyze the effect of biocomposite air filters on engine power, torque, and specific fuel consumption (SFC), by varying the material composition and the number of pleats, and comparing the results with those of a standard air filter. The method used is a quantitative experimental approach involving dyno testing on a 150 cc motorcycle engine. The tested material compositions include 50:50, 40:60, 30:70, 60:40, and 70:30 (sugarcane bagasse\:rice husk), with pleat counts of 28, 26, and 24. Results showed that the biocomposite filter with 28 pleats and a 30:70 composition delivered the best performance, producing 18.47 Hp and 16.66 Nm of torque—higher than the standard filter’s 17.98 Hp and 15.52 Nm. In terms of fuel efficiency, the 26-pleat filter with a 50:50 composition recorded the lowest SFC at 41.90 g/kWh, significantly better than the standard filter’s 53.03 g/kWh. Conversely, the 60:40 composition resulted in the highest SFC due to increased airflow resistance.

The processing of natural fibers as raw materials for paper has grown over the past few years. However, the use of composite paper as a printing substrate has several drawbacks. One of them is the low color reproduction quality of printed images on paper made from natural fibers, caused by the insufficient whiteness of the paper. This study aims to investigate the effect of titanium dioxide (TiO₂) addition on the color reproduction quality of composite paper based on sugarcane bagasse fiber. TiO₂ was varied at concentrations of 0%, 10%, and 20%. Printing process was carried out using an inkjet printer with standard CMYK and RGB color patches. After that, the printed results were measured using colorimeter with D65 illuminant. Color distribution analysis was processed using MATLAB software. The results showed that the addition of TiO₂ increased the whiteness of the paper, as indicated by the higher L* values. The color gamut visualization demonstrated that the gamut area expanded as the TiO₂ content increased. This result shows that the addition of TiO₂ affects the color reproduction quality of composite paper.

One of the most profitable agricultural commodities is eggplant. Eggplants also need to be large enough to be eaten as vegetables or vegetables. Eggplant farmers in Indonesia often experience crop failure problems due to excessive use of chemical fertilizers, which make the soil acidic and harmful to the environment. Efforts to help the growth and development of eggplants by using compost. The focus of the research is to determine the effectiveness of various compost fertilizers on the growth and production of eggplant plants. It was carried out from July-September 2023 in Sidorejo Village, Langsa Lama District, Langsa City. In this study, a Non-Factorial Group Random Design (RAK) was used. The observed factor is various compost fertilizers, which consist of 11 composts with 1 variety of Mustang F1 eggplant which is repeated 3 times. The results showed that the treatment of various types of compost fertilizers had a real effect on the plant height parameters of 15 HST and stem diameter of 45 HST. However, it had an insignificant effect on the parameters of average fruit weight, fruit weight, number of fruit planted, average fruit size and production per hectare at harvest time. The benefits of this research are improving the quality of soil fertility, plants becoming fertile, and improving plant quality and productivity. The best result was obtained from K8 (gamal leaf compost), but it was as good as K7 (petai leaf compost). The application of compost fertilizer is effective for all parameters of eggplant plants, except for the treatment of K5 (bagasse compost) because the average value is below 100%, the most effective compost fertilizer is obtained in the treatment of K8 (gamal leaf compost), but it is as good as K4 (straw compost) and K7 (petai leaf compost). To cultivate eggplant plants, it is recommended to use gamal leaf compost, straw compost, petai leaf compost.

Adsorption is a separation process on a particular substance based on the affinity of a compound to a solid. The adsorption process requires an adsorbent as an absorbent material and an adsorbate as an absorbed component. The adsorbent that is often used to absorb Cu2+ ions is silica gel. Silica gel is a rigid gel that is amorphous. In silica gel there are two main bonding groups, namely siloxane and silanol groups which cause silica gel to easily absorb polar molecules, especially water. The purpose of this research is to get the best mass of silica and the effect of the initial concentration of Cu ions on the final concentration of Cu metal. In this study, two operating conditions were varied, namely the mass of silica gel adsorbent 0.4 grams; 0.6 grams; 0.8 grams; 1 gram; 1.2 grams and the initial concentration of Cu metal 3 ppm; 4 ppm; 5 ppm; 6 ppm; 7 ppm. The results of this study showed that the silica content of bagasse ash was 70.97% with a surface area of 283.802 m2/g. The best result of this study reduced the content of copper metal (Cu) by 88% in the condition of silica gel mass of 1.2 grams. The adsorption isotherm shows that the data is more in line with the Freundlich equation. The resulting equation is y = 0.4268x + 0.4969 with an R2 value of 0.9837.

Biodiesel, which is generally defined as monoalkyl esters from plant and animal fats, is an alternative fuel that has the potential to be used as a substitute for diesel fuel because of its characteristics. Used cooking oil or used cooking oil haD the potential to be processed into biodiesel and this study aims was to produce waste cooking oil into biodiesel from the results of the pre-treatment process of used cooking oil with bagasse waste, to find out the optimum result of the oil pretreatment proces and the raw material used was used cooking oil from the Rocket Chicken Food Court restaurant. Waste from sugarcane bagasse was useful as an adsorption process for the purification of used cooking oil which was able to reduce free fatty acid levels, water content, and impurities levels for the biodiesel process. The optimum particle size of bagasse waste for used cooking oil pretreatment was 30 mesh, with the analytical data was 1.93%  of free fatty acid, 0,0018 % for water content and 0,03% of firt level. The results of the Biodiesel analysis from the pre-treatment process were the viscosity was 5.7 Cst, the density was 860 kg/m3 and the acid number was 0.8 mg KOH/g oil. This result was accordance to the indonesian national standard No. 04-7182-2006.

This Community Service activity aims to optimize the use of environmentally friendly agricultural products in the home industry for processing aloe vera into nata de aloevera. The agricultural products used are rice straw waste and bagasse which are processed into biodegradable raw materials. The experiment was carried out using a completely randomized design (CRD) with three treatments namely A (50% waste rice straw + 50% bagasse), B (75% waste rice straw + 25% bagasse), and C (25% waste rice straw + 75% bagasse). Measurements were made of the parameters pH, total acid, water content, protein content, and organoleptic nata de aloevera. The results showed that treatment A gave the best results in terms of pH, total acid, and protein content. Meanwhile, C treatment gave the best results on water content and organoleptic. It is hoped that the results of this research can provide alternatives to the use of environmentally friendly raw materials in the home industry for processing aloe vera into nata de aloevera and can meet consumer needs for healthy and safe food products..  Keywords: Biodegradable agricultural products, Home industry, Aloe vera processing, Nata de aloevera, Green technology, Green technology   Abstrak_Indo. Kegiatan Pengabdian pada Masyarakat ini bertujuan untuk mengoptimalkan pemanfaatan produk pertanian yang ramah lingkungan pada home industry pengolahan aloe vera menjadi nata de aloevera. Produk pertanian yang digunakan adalah limbah jerami padi dan ampas tebu yang diolah menjadi bahan baku biodegradable. Percobaan dilakukan dengan menggunakan rancangan acak lengkap (RAL) dengan tiga perlakuan yaitu A (50% limbah jerami padi + 50% ampas tebu), B (75% limbah jerami padi + 25% ampas tebu), dan C (25% limbah jerami padi + 75% ampas tebu). Pengukuran dilakukan terhadap parameter pH, total asam, kadar air, kadar protein, dan organoleptik nata de aloevera. Hasil penelitian menunjukkan bahwa perlakuan A memberikan hasil terbaik pada parameter pH, total asam, dan kadar protein. Sementara itu, perlakuan C memberikan hasil terbaik pada kadar air dan organoleptik. Diharapkan hasil dari penelitian ini dapat memberikan alternatif pemanfaatan bahan baku yang ramah lingkungan dalam home industry pengolahan aloe vera menjadi nata de aloevera serta dapat memenuhi kebutuhan konsumen pada produk makanan yang sehat dan aman. Kata kunci: Produk pertanian biodegradable, Industri rumahan, Pengolahan lidah buaya, Nata de aloevera, Teknologi hijau, Teknologi hijau.