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Bioresour Technol

Title:		Biodegradability enhancement of phenolic wastewater using hydrothermal pretreatment
Author(s):		Zhang H; Ling Z; Ma J; Nie Y;
Address:		"Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui 243002, China. Electronic address: zhw@ahut.edu.cn. Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui 243002, China"
Journal Title:		Bioresour Technol
Year:		2023
Volume:		20221025
Issue:
Page Number:		128199 -
DOI:		10.1016/j.biortech.2022.128199
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"A novel hydrothermal pretreatment was applied for the biochemical treatment of phenolic wastewater with high concentrations of phenolic substances. The results demonstrated that 250 degrees C was the reaction temperature dividing point for complete oxidation, hydrothermal gasification, and amino release from carbonaceous organics in phenolic wastewater. Before the dividing point reached, some of the large molecules were hydrolyzed into small molecules of volatile phenolic substances that were easily adsorbed by the activated sludge. After the integrated hydrothermal pretreatment and anaerobic/aeration process, the removal rate of volatile phenolswas respectively reached by 97 % and 88 % with hydrothermal temperature of 250 degrees C and without pretreatment. Functional microorganisms (i.e., Chloroflexi) responsible for aromatic compounds degradation were enriched, thus the dioxygenases, dehydrogenase reactions, and meta-cleavage of catechol were enhanced. This work provided an innovative approach to remove phenolic substances from phenolic wastewater, and in-depth understandings of microbial responses in biochemical systems"
Keywords:		"*Wastewater/chemistry *Waste Disposal, Fluid/methods Sewage/chemistry Phenols Temperature B/C ratio Coking wastewater Functional microorganisms Hydrothermal pretreatment Volatile phenol;"
Notes:		"MedlineZhang, Huiwen Ling, Zhang Ma, Jiangya Nie, Yong eng England 2022/10/29 Bioresour Technol. 2023 Jan; 367:128199. doi: 10.1016/j.biortech.2022.128199. Epub 2022 Oct 25"