| Title: | Molecular composition of hydrothermal liquefaction wastewater from sewage sludge and its transformation during anaerobic digestion |
| Author(s): | Hao S; Ren S; Zhou N; Chen H; Usman M; He C; Shi Q; Luo G; Zhang S; |
| Address: | "Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, 80401, United States. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China. Electronic address: gangl@fudan.edu.cn. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China. Electronic address: zhangsc@fudan.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2019.121163 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Anaerobic digestion (AD) has shown potential to convert hydrothermal liquefaction wastewater (HTLWW) into biogas in previous studies. However, the identification of refractory components and further insights into the molecular transformations of organics in HTLWW are essential for developing more efficient AD processes. In this study, two HTLWWs were obtained from the temperature-derived hydrothermal liquefaction of sewage sludge at 170 ?SG and 320 ?SG. Their molecular compositions, as well as their modifications in the subsequent AD process, were characterized using a suite of advanced molecular tools. The dissolved organic matter (DOM) in the high temperature-derived HTLWW was lower in molecular weight, less saturated, less oxidized, and enhanced in nitrogenous substances. During the AD process, most of the volatile compounds and low molecular weight (LMW) neutrals were removed, while biopolymers were the most refractory. Carboxylic-rich alicyclic molecules (CRAM), particularly those containing 3 to 5?ª+N for low temperature-derived DOM and 1 to 3?ª+N for high temperature-derived DOM, were resistant to anaerobic biodegradation. Meanwhile, compounds with fewer nitrogens and more carboxyl groups were preferentially produced. This molecular characterization of HTLWW-derived DOM and examination of its transformation during AD will contribute to the development of efficient methods for HTLWW treatment in the future" |
| Keywords: | "Anaerobiosis Biodegradation, Environmental Biopolymers/chemistry Sewage/*chemistry Spectrum Analysis/methods Wastewater/*chemistry Anaerobic digestion Hydrothermal liquefaction wastewater Resistant compounds;" |
| Notes: | "MedlineHao, Shilai Ren, Shuang Zhou, Nan Chen, Huihui Usman, Muhammad He, Chen Shi, Quan Luo, Gang Zhang, Shicheng eng Research Support, Non-U.S. Gov't Netherlands 2019/09/15 J Hazard Mater. 2020 Feb 5; 383:121163. doi: 10.1016/j.jhazmat.2019.121163. Epub 2019 Sep 5" |
