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Tuning oxygenated functional groups on biochar for water pollution control: A critical review
Dai, Lichun; Lu, Qian; Zhou, Haiqin; Shen, Fei; Liu, Zhengang; Zhu, Wenkun; Huang, Huagang
2021-12-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0043-1354
Volume206Pages:-
AbstractThermal hydrolysis pretreatment (THP) is often used to improve the anaerobic digestion performance of waste activated sludge (WAS) in wastewater treatment plants (WWTPs). During the THP process, the proteins and polysaccharides in the biomass will undergo hydrolysis and Maillard reaction, producing biorefractory organic substances, such as recalcitrant dissolved organic nitrogen (rDON) and melanoidins. In this study, a series of spectroscopy methods were used to quantitatively analyze the Maillard reaction of glucose and lysine, and the interaction mechanisms of the Maillard reaction products (MRPs) and lysozyme were investigated. Results showed that the typical aromatic heterocyclic structures in MRPs, such as pyrazine and furan, were found to quench molecular fluorescence of lysozyme, resulting in an unfolding of standard protein structure and increase in lysozyme hydrophobicity. Significant loss of enzyme activity was detected during this process. Thermodynamic parameters obtained from isothermal titration calorimetry (ITC) confirmed that the interaction between MRPs and lysozyme occurred both exothermically and spontaneously. Density functional theory (DFT) calculations suggested that the molecular interactions of MRPs and protein included parallel dislocation aromatic stacking, T-shaped vertical aromatic stacking, H-bond and H-bond coupled to aromatic stacking.
Department固体废弃物处理与资源化实验室
KeywordWaste activated sludge Thermal hydrolysis pretreatment Anaerobic digestion Maillard reaction products Enzyme activity Molecular interaction
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46787
Collection固体废弃物处理与资源化实验室
Affiliation1.Minist Agr & Rural Affairs, Biogas Inst, Key Lab Dev & Applicat Rural Renewable Energy, Chengdu 610041, Peoples R China
2.Sichuan Agr Univ, Inst Ecol & Environm Sci, Chengdu 611130, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China
4.Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Natl Coinnovat Ctr Nucl Waste Disposal & Environm, Sch Natl Def Sci & Technol,Nucl Waste & Environm, Mianyang 621010, Sichuan, Peoples R China
5.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Peoples R China
Recommended Citation
GB/T 7714
Dai, Lichun,Lu, Qian,Zhou, Haiqin,et al. Tuning oxygenated functional groups on biochar for water pollution control: A critical review[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,206:-.
APA Dai, Lichun.,Lu, Qian.,Zhou, Haiqin.,Shen, Fei.,Liu, Zhengang.,...&Huang, Huagang.(2021).Tuning oxygenated functional groups on biochar for water pollution control: A critical review.JOURNAL OF HAZARDOUS MATERIALS,206,-.
MLA Dai, Lichun,et al."Tuning oxygenated functional groups on biochar for water pollution control: A critical review".JOURNAL OF HAZARDOUS MATERIALS 206(2021):-.
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