Enzymatic pretreatment and anaerobic co-digestion as a new technology to high-methane production
| Autor: | Débora de Oliveira, Janaína dos Santos Ferreira, Agenor Furigo, Eliana Setsuko Kamimura, Rafael Resende Maldonado |
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| Rok vydání: | 2020 |
| Předmět: |
Municipal solid waste
Industrial Waste Bacterial Physiological Phenomena Applied Microbiology and Biotechnology Methane 03 medical and health sciences chemistry.chemical_compound Bioreactors Biogas Bioenergy Anaerobiosis Biomass Effluent 030304 developmental biology 0303 health sciences RESÍDUOS Sewage 030306 microbiology General Medicine Lipase Pulp and paper industry Culture Media Enzyme Activation Anaerobic digestion chemistry Biofuels Fermentation Sludge Brazil Biotechnology |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | The population growth is causing an increase in the generation of effluents (mainly organic fraction of municipal solid waste (OFMSW) and agro-industrial waste), which is an old problem in agro-industrial countries such as Brazil. Contrastingly, it is possible to add value to these residual biomasses (residues) through the application of new technologies for the production of bioenergy. Anaerobic digestion (AD) of sewage sludge is being applied in many effluent treatment plants for the sustainable and economically viable production of biogas. However, the biogas produced from AD (sludge) or co-digestion (sludge with other residues) presents a concentration of methane between 60 and 70% on average, which is relatively low. This review is aimed at analyzing studies involving (i) production of lipases by solid-state fermentation (SSF) by different microorganisms for the application in enzymatic pretreatments prior to the anaerobic treatment of effluents; (ii) pretreatment followed by AD of various residues, with an emphasis on OFMSW and sewage sludge; and (iii) more recent studies on anaerobic co-digestion (AcoD) and hybrid technologies (pretreatment + AD or AcoD). There are many studies in the literature that demonstrate the enzymatic pretreatment or AcoD applied to the optimization of methane production. Nevertheless, few studies report the combination of these two technologies, which can improve the process and reduce or eliminate the costs of biogas purification, which are major challenges for the viability of this route of bioenergy production. KEY POINTS: • Municipal and agro-industrial wastes have potential as medium for lipase production. • Enzymatic pretreatment and anaerobic co-digestion are low cost for high-methane production. Graphical abstract Interactions among various factors optimization methane production from enzymatic pretreatment and AcoD. |
| Databáze: | OpenAIRE |
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