Effects of hydrochar and co-substrate on phenol anaerobic degradation
Journal Title: Energy Environmental Protection - Year 2024, Vol 38, Issue 1
Abstract
Anaerobic digestion (AD) is a sustainable biotechnology, which has been applied in the treatment of organic waste. Refractory phenolic compounds, as the main toxic substances in the anaerobic digestion process, usually undergo complex and slow degradation. The addition of hydrochar and co-substrates has been found to effectively enhance the efficiency of phenol anaerobic digestion. This study investigated the simultaneous addition of hydrochar and co-substrates and its impact on anaerobic degradation of phenol. Results indicated that the addition of hydrochar and co-substrates reduced the lag phase of phenol anaerobic digestion, shortening it from 77.5 days in the control to 24.6~59.3 days. When hydrochar and co-substrates were added simultaneously, the maximum methane production rate (Rm) increased from 3.53 mL/d to 4.86~6.80 mL/d. However, when only co-substrates were added and the concentration was too high, it hindered the stimulation of Rm. The optimal concentration for glucose co-substrate addition was approximately between 1.0 and 2.0 g/L. A high concentration of glucose in the environment might enrich other competitive microorganisms, leading to the inhibition of benzoic acid-degrading bacteria and acetate-consuming methane-producing bacteria. Hydrochar also promoted the enrichment of benzoic acid degraders, but the influence of glucose co-substrate concentration on community composition was mitigated in the presence of hydrochar. This study utilized hydrochar and co-substrates to enhance anaerobic degradation of phenol, providing a novel approach to improve the efficiency of phenol anaerobic digestion.
Authors and Affiliations
SHAO Qianqi|Department of Environmental Science and Engineering, Fudan University, China, Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, China, Shanghai Institute of Pollution Control and Ecological Security, China, LUO Tao|Department of Environmental Science and Engineering, Fudan University, China, Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, China, Shanghai Institute of Pollution Control and Ecological Security, China, Shanghai Jianke Environmental Technology Co., Ltd., China, ZHANG Shicheng|Department of Environmental Science and Engineering, Fudan University, China, Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, China, Shanghai Institute of Pollution Control and Ecological Security, China, LUO Gang*|Department of Environmental Science and Engineering, Fudan University, China, Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, China, Shanghai Institute of Pollution Control and Ecological Security, China
Keywords
Related Articles
- EP ID EP736944
- DOI 10.20078/j.eep.20240113
- Views 71
- Downloads 0
Recent progress in metal-substrate supported monolithic catalysts for CO_2 methanation
With the goal of carbon neutrality, CO_2 methanation technology can not only solve the environmental problems caused by CO_2 emissions, but also convert CO_2 into CH_4 to alleviate problems such as the energy shortages....
Peraceti cacid disinfection characteristics and application progress in wastewater treatment plants
Disinfection is an essential process in wastewater treatment. Chlorine disinfection is a commonly used chemical disinfectant, but it produces harmful by-products that pose threats to human health and the ecological envir...
Status and development trends of resource utilization and pollution control of renewable energy waste
With Chinaâ²s "dual carbon" goals continuously deepening, the wind power and photovoltaic industries are experiencing steady growth, with the new energy vehicle sector rapidly developing. Meanwhile, battery energy stora...
Research progress on SCR catalysts for the synergistic removal of NO and VOCs from coal-fired power plants flue gas: A review
NO_x and VOCs emissions from coal-fired power plants account for roughly 30% of anthropogenic emissions and provide a severe challenge to air quality protection. Synergistic NO and VOCs removal from coal-fired power plan...
Greenhouse gas monitoring application and emission reduction measures in China
Excessive emissions of carbon dioxide, methane and other greenhouse gases will lead to a series of environmental problems such as global warming. It is of great significance to monitor greenhouse gases. Countries around...