Topic
Biogas
About: Biogas is a research topic. Over the lifetime, 28571 publications have been published within this topic receiving 498545 citations.
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TL;DR: In this article, the synergistic integration of low carbon to nitrogen ratio (C/N) biomass with high C/N ratio lignocellulosic biomass in an anaerobic digestion (AD) system appears to be a logical option to enhance biogas yield.
Abstract: Global annual production of lignocellulosic biomass including undervalued agricultural residues and greenhouse biomass is about 181.5 billion tonnes. This undervalued biomass has a high potential to produce biogas in anaerobic digestion (AD). Among the various pre-treatment methods, hydrothermal (HT) pre-treatment of lignocellulosic biomass is a promising approach to increase biogas production in AD. However, the high carbon to nitrogen ratio (C/N) of lignocellulosic biomass is reported to be the major limiting factor for a higher biogas yield. Hence, the synergistic integration of low C/N ratio biomass with high C/N ratio lignocellulosic biomass in an AD system appears to be a logical option to enhance biogas yield. High moisture lignocellulosic biomass HT pretreatment and biogas production in AD have the potential for renewable energy production with limited use of process energy. However, hydrothermal process temperature, AD substrate C/N ratio and its inhibitory elements are important parameters for optimum biogas production. Greenhouse biomass pretreatment in hydrothermal process can produce biochar, biogas and biofertilizer, which can be used as input heat and nutrient source for greenhouses. Finally, the operation of greenhouse in this system can manage zero waste and reduce greenhouse gas (GHG) emissions and climate change.
266 citations
TL;DR: In this article, the effect of thermal and sonication pre-treatment on the degradation of sewage sludge was evaluated through the calculation of performance parameters by using three simplified mathematical models and one kinetic model.
266 citations
TL;DR: The degradation and biogas production potential of sisal fiber waste could be significantly increased by pre-treatment for reduction of particle size as mentioned in this paper, and the results confirmed that methane yield was inversely proportional to particle size.
264 citations
TL;DR: An overview of the most recent advances pertaining to metabolic engineering of microbial methane utilization is presented and some ideas concerning metabolic improvements for production of acetyl-CoA and pyruvate, two main precursors for bioconversion, are presented.
263 citations
TL;DR: In this article, the authors investigated the trace compounds affecting energy utilisation in biogas that come from different production sites and found that the concentrations and the variations of volatile organic compounds (VOCs) can be high in different landfills, especially, with compounds originating from the biological degradation process (like aromatics and terpenes) as seasonal variations affect biological degradation.
263 citations