A rise in fruit and vegetable waste (FVW) creates a problem for ecology and also offers a new way to produce renewable energy. In this investigation, FVW was anaerobically digested in batches to check gas yield, the percentage of methane and to study the results of process variables such as HRT and TS. Vegetable waste, fruit waste and mixtures of the two were examined to see how much biogas they could produce. Research showed that nutritionally balanced substrate was needed, as just using fruit did not produce any gas, while vegetable waste produced the greatest yield. Significant differences in substrate types were established through the use of ANOVA and pairwise t-tests (p < 0.0001). Best performance of the process was seen at 20 days HRT and 4-6% TS loading. The incorporation of mixed digesters enhanced the stability of the process and augmented the methane concentration derived from fruit waste, in comparison to the single-digestion approach. The study also adds ANN-based modeling to help achieve better predictions and improved designs for waste-to-energy systems. The research results offer key data for making biogas on a larger scale from organic waste and achieve both sustainable goals and circular economy aims.

视频信息

答案文本 复制

视频字幕 复制

Rising fruit and vegetable waste creates significant ecological problems while simultaneously offering opportunities for renewable energy production. This research investigates converting organic waste into biogas through anaerobic digestion, aiming to optimize methane production and support circular economy principles. Anaerobic digestion occurs in four main stages. First, hydrolysis breaks down complex organic materials into simple compounds. Next, acidogenesis forms organic acids. Then acetogenesis converts these to acetate. Finally, methanogenesis produces methane and carbon dioxide under controlled temperature and pH conditions. The research methodology involved testing three substrate types: fruit waste only, vegetable waste only, and mixed waste. Key parameters measured included hydraulic retention time and total solids content. Analysis used ANOVA statistical testing, pairwise t-tests, and artificial neural network modeling to evaluate gas yield and methane percentage. Key findings revealed that fruit waste alone produced no biogas due to nutritional imbalance, while vegetable waste showed the highest yield. Optimal conditions were identified as twenty days hydraulic retention time with four to six percent total solids loading. Mixed digesters improved process stability and methane concentration, with statistical significance at p less than 0.0001. To summarize our findings: nutritionally balanced substrates are crucial for effective biogas production. Vegetable waste significantly outperforms fruit waste in methane yield. The optimal operating conditions are twenty-day hydraulic retention time with four to six percent total solids. Mixed digesters enhance both process stability and efficiency, supporting sustainable waste-to-energy systems and circular economy objectives. Anaerobic digestion occurs in four main stages. First, hydrolysis breaks down complex organic materials into simple compounds. Next, acidogenesis forms organic acids. Then acetogenesis converts these to acetate. Finally, methanogenesis produces methane and carbon dioxide under controlled temperature and pH conditions. The research methodology involved testing three substrate types: fruit waste only, vegetable waste only, and mixed waste. Key parameters measured included hydraulic retention time and total solids content. Analysis used ANOVA statistical testing, pairwise t-tests, and artificial neural network modeling to evaluate gas yield and methane percentage. Key findings revealed that fruit waste alone produced no biogas due to nutritional imbalance, while vegetable waste showed the highest yield. Optimal conditions were identified as twenty days hydraulic retention time with four to six percent total solids loading. Mixed digesters improved process stability and methane concentration, with statistical significance at p less than 0.0001. To summarize our findings: nutritionally balanced substrates are crucial for effective biogas production. Vegetable waste significantly outperforms fruit waste in methane yield. The optimal operating conditions are twenty-day hydraulic retention time with four to six percent total solids. Mixed digesters enhance both process stability and efficiency, supporting sustainable waste-to-energy systems and circular economy objectives.