| Title | Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions |
|---|---|
| ID_Doc | 10029 |
| Authors | Morales, M; Arp, HPH; Castro, G; Asimakopoulos, AG; Sormo, E; Peters, G; Cherubini, F |
| Title | Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions |
| Year | 2024 |
| Published | |
| Abstract | The high moisture content and the potential presence of hazardous organic compounds (HOCs) and metals (HMs) in sewage sludge (SS) pose technical and regulatory challenges for its circular economy valorisation. Thermal treatments are expected to reduce the volume of SS while producing energy and eliminating HOCs. In this study, we integrate quantitative analysis of SS concentration of 12 HMs and 61 HOCs, including organophosphate flame retardants (OPFRs) and per- and poly-fluoroalkyl substances (PFAS), with life -cycle assessment to estimate removal efficiency of pollutants, climate change mitigation benefits and toxicological effects of existing and alternative SS treatments (involving pyrolysis, incineration, and/or anaerobic digestion). Conventional SS treatment leaves between 24 % and 40 % of OPFRs unabated, while almost no degradation occurs for PFAS. Thermal treatments can degrade more than 93% of target OPFRs and 95 % of target PFAS (with the rest released to effluents). The different treatments affect how HMs are emitted across environmental compartments. Con- ventional treatments also show higher climate change impacts than thermal treatments. Overall, thermal treatments can effectively reduce the HOCs emitted to the environment while delivering negative emissions (from about -56 to -111 kg CO 2 -eq per tonne of sludge, when pyrolysis is involved) and producing renewable energy from heat integration and valorization. |
| https://doi.org/10.1016/j.jhazmat.2024.134242 |
Similar Articles
| ID | Score | Article |
|---|---|---|
28070
|
Mohamed, BA; Nicomel, NR; Hamid, H; Li, LY Using circular economy principles in the optimisation of sludge-based activated carbon production for the removal of perfluoroalkyl substances(2023) | |
| 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) | |
| 17952
|
Vouk, D; Nakic, D; Bubalo, A; Bolanca, T Environmental Aspects In Selecting Optimum Variant Of Sewage Sludge Management(2022)Environmental Engineering And Management Journal, 21, 3 | |
| 23960
|
Husek, M; Mosko, J; Pohorely, M Sewage sludge treatment methods and P-recovery possibilities: Current state-of-the-art(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) | |
| 15019
|
Gulhan, H; Dizaji, RF; Hamidi, MN; Abdelrahman, AM; Basa, S; Kurt, ES; Koyuncu, I; Guven, H; Ozgun, H; Ersahin, ME; Ozturk, I Use of water treatment plant sludge in high-rate activated sludge systems: A techno-economic investigation(2023) | |
| 27939
|
Hamze, A; Zakaria, BS; Zaghloul, MS; Dhar, BR; Elbeshbishy, E Comprehensive hydrothermal pretreatment of municipal sewage sludge: A systematic approach(2024) | |
| 13316
|
Suryawan, IWK; Septiariva, IY; Widanarko, DUF; Qonitan, FD; Sarwono, A; Sari, MM; Prayogo, W; Arifianingsih, NN; Suhardono, S; Lim, JW Enhancing energy recovery from Wastewater Treatment Plant sludge through carbonization(2024) | |
| 15001
|
Shanmugam, K; Gadhamshetty, V; Tysklind, M; Bhattacharyya, D; Upadhyayula, VKK A sustainable performance assessment framework for circular management of municipal wastewater treatment plants(2022) | |
| 28327
|
Mohamed, BA; Hamid, H; Montoya-Bautista, CV; Li, LY Circular economy in wastewater treatment plants: Treatment of contaminants of emerging concerns (CECs) in effluent using sludge-based activated carbon(2023) |