Crystal Growth and Design.
American Chemical Society.
Vol. 22.
2022.
P. 2146-2157
Effects on the Physicochemical Properties of Hydrochar Originating from Deep Eutectic Solvent (Urea and ZnCl2)-Assisted Hydrothermal Carbonization of Sewage Sludge
Deep eutectic solvents (DESs) (ZnCl2and urea) have been used to solubilize organic matter from sewage sludge (SS), followed by subsequent hydrothermal carbonization (HTC) to obtain low-nitrogen-content hydrochar. The nitrogen content in hydrochar obtained after DES addition decreased to 1.93 from 3.15% (no DES) at 210 °C. DES can notably dissolve proteins and lipids during HTC of SS. HTC of polysaccharides was enhanced, increasing the degree of carbonization. The key role of DES in SS during HTC was the dissolution of proteins, promoting carbonization of polysaccharides, Maillard reactions, deamination, and decarboxylation of proteins. ZnCl2was probably converted into β-Zn(OH)C1 and ZnO during HTC. Results pointed to relevant enhancements when DES was added, useful for organic waste valorization such as SS, food waste, poultry manure, and related waste feedstock. © 2022 American Chemical Society. All rights reserved.
Authors
Xu Z.1
,
Ma X.1
,
Liao J.2,
3
,
Osman S.M.4
,
Wu S.5
,
Luque R.
6,
7
Publisher
American Chemical Society
Number of issue
13
Language
English
Pages
4258-4268
Status
Published
Link
Volume
10
Year
2022
Organizations
- 1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China
- 2 State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- 3 Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
- 4 Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
- 5 State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
- 6 Departamento de Quimica Organica, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, Cordoba, E14014, Spain
- 7 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya street, Moscow, 117198, Russian Federation
Keywords
catalysis; deep eutectic solvents; hydrothermal carbonization; sewage sludge
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