| Title | Comprehensive hydrothermal pretreatment of municipal sewage sludge: A systematic approach |
|---|---|
| ID_Doc | 27939 |
| Authors | Hamze, A; Zakaria, BS; Zaghloul, MS; Dhar, BR; Elbeshbishy, E |
| Title | Comprehensive hydrothermal pretreatment of municipal sewage sludge: A systematic approach |
| Year | 2024 |
| Published | |
| Abstract | This study provides a comprehensive analysis of the potential impact of hydrothermal pretreatment (HTP) on municipal thickened waste -activated sludge (TWAS) and its integration with anaerobic digestion (AD). The research demonstrates that HTP conditions (170 degrees C, 3 bars for 30 min) can increase the solubilization of macromolecular organic compounds by 41%, which enhances biodegradability in semicontinuous bioreactors. This treatment also results in a 50% reduction in chemical oxygen demand (COD) and a 63% increase in the destruction of volatile solids (VS). The combination of HTP with AD significantly boosts methane yields by 51%, reaching 176 ml/g COD, and improves the digestate dewaterability, doubling the solid content in the dewatered cake. However, a higher polymer dose is required compared to conventional AD. Microbial community analysis correlates the observed performance and alterations; it indicates that HTP enhances resilience to stress conditions such as ammonia toxicity. This comprehensive study provides valuable insights into the transition from wastewater treatment plants (WWTPs) to resource recovery facilities (RRF) in line with circular economy principles. |
Similar Articles
| ID | Score | Article |
|---|---|---|
6129
|
Ferrer, I; Passos, F; Romero, E; Vázquez, F; Font, X Optimising sewage sludge anaerobic digestion for resource recovery in wastewater treatment plants(2024) | |
| 5590
|
Dutta, N; Giduthuri, AT; Khan, MU; Garrison, R; Ahring, BK Improved valorization of sewage sludge in the circular economy by anaerobic digestion: Impact of an innovative pretreatment technology(2022) | |
| 24115
|
Cesaro, A; Pirozzi, F; Zafirakou, A; Alexandraki, A Microplastics in sewage sludge destined to anaerobic digestion: The potential role of thermal pretreatment(2022) | |
| 11129
|
Seyedi, S; Venkiteshwaran, K; Zitomer, D Current status of biomethane production using aqueous liquid from pyrolysis and hydrothermal liquefaction of sewage sludge and similar biomass(2021)Reviews In Environmental Science And Bio-Technology, 20, 1 | |
| 12524
|
Mao, LW; Tsui, TH; Zhang, JX; Dai, YJ; Tong, YW System integration of hydrothermal liquefaction and anaerobic digestion for wet biomass valorization: Biodegradability and microbial syntrophy(2021) | |
| 64856
|
Smetana, G; Grosser, A Kinetic study of high-solids anaerobic co-digestion of pre-treated organic waste in terms of methane production(2023) | |
| 8674
|
Gallipoli, A; Braguglia, CM; Di Carlo, M; Gianico, A; Montecchio, D; Pagliaccia, P; Pastore, C; Gironi, F Conversion Of Food Waste Into Energy: Impact Of Thermal Pre-Treatment On Hydrogen And Methane Production(2017) | |
| 6659
|
Krohn, C; Khudur, L; Dias, DA; van den Akker, B; Rees, CA; Crosbie, ND; Surapaneni, A; O'Carroll, DM; Stuetz, RM; Batstone, DJ; Ball, AS The role of microbial ecology in improving the performance of anaerobic digestion of sewage sludge(2022) | |
| 14177
|
Wei, W; Zhou, X; Wang, DB; Sun, J; Wang, QL Free ammonia pre-treatment of secondary sludge significantly increases anaerobic methane production(2017) | |
| 26883
|
Garlicka, A; Kupidura, P; Krawczyk, P; Umiejewska, K; Muszynski, A Re-flocculation reduces the effectiveness of sewage sludge pretreatment through hydrodynamic disintegration prior to anaerobic digestion(2023) |