Enhanced wet anaerobic digestion of straw by co-culture of white-rot fungus and anaerobic sludge

Journal Title: Energy Environmental Protection - Year 2024, Vol 38, Issue 1

Abstract

Straw is one of the widely available renewable biomass resources. However, due to the difficult degradability of the lignin structure, wet anaerobic fermentation is generally not highly utilized for straw at present. In this study, Phanerochaete chrysosporium, a white-rot fungus, was co-cultivated with anaerobic sludge under microaerobic conditions to investigate its effect on methane production from straw in wet anaerobic fermentation. The results showed that the substrate methane yield (75.76 mL/ g VS) and TCOD removal in the co-culture group increased by 45% and 37%, respectively, compared to the non-co-culture group at 0.6 mg/ L dissolved oxygen. Electrochemical analysis revealed that co-culture effectively increased the sludge capacitance by 182.9%. The introduction of Phanerochaete chrysosporium made the straw easier to digest and produced electroactive substances, which intensified the humification process and extracellular electron transfer, and consequently increased methane production. Effective utilization of straw without pretreatment was achieved in this study, providing a reference for further straw resource recovery.

Authors and Affiliations

YUAN Wendian|Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Ministry of Education, China, YU Qilin*|Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Ministry of Education, China, ZHANG Yaobin*|Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Ministry of Education, China

Keywords

Related Articles

Analysis on the development of high energy efficiency and low carbon in iron and steel enterprises

Low-carbon transition of iron and steel enterprises plays an important role in the efficient and low-carbon development of Chinese iron and steel enterprises and the realization of "double carbon" goal. This paper presen...

Advances in the removal of emerging contaminants from water mediated by chemically modified biochar

Emerging contaminants are pollutants with relatively low concentration but high toxicity. They can be enriched in living organisms and transferred to the human body through the food chain, posing a significant threat to...

Effects of intermittent power-on and electrode inversion on anaerobic co-digestion of sludge and food waste in MEC-CSTR system

The rapid urbanization has led to the discharge and generation of large amounts of organic solid waste, such as sewage sludge (SS) and food waste (FW). The introduction of a microbial electrolysis cell (MEC) into the ana...

Advances in biomass-based thermochemical hydrogen production technology

The excessive utilization of fossil fuels has caused the energy crisis and greenhouse effect, and the development of clean and sustainable sources can adjust the energy structure of China and promote green and sustainabl...

Advances in the application of metal-organic framework materials in the wastewater decolorization treatment

The increasing environmental problems caused by the high toxicity and recalcitrant properties of synthetic dyes have attracted significant attention. Therefore, the development of new wastewater treatment decolorizers an...

Download PDF file
  • EP ID EP736953
  • DOI 10.20078/j.eep.20240115
  • Views 53
  • Downloads 0

How To Cite

YUAN Wendian, YU Qilin*, ZHANG Yaobin* (2024). Enhanced wet anaerobic digestion of straw by co-culture of white-rot fungus and anaerobic sludge. Energy Environmental Protection, 38(1), -. https://www.europub.co.uk/articles/-A-736953