Cargando…
Anaerobic Co-Digestion with Food Waste: A Possible Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment
[Image: see text] Thermal pretreatment (TP) was an effective method to improve the anaerobic digestion of waste-activated sludge. In order to balance the energy consumption of sludge TP integrated with anaerobic digestion, food waste was introduced as a co-substrate to achieve an energy self-sustain...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9631406/ https://www.ncbi.nlm.nih.gov/pubmed/36340169 http://dx.doi.org/10.1021/acsomega.2c03700 |
_version_ | 1784823810869952512 |
---|---|
author | Liu, Yang Zong, Yifeng Xie, Tian Song, Hainong Zhang, Jian |
author_facet | Liu, Yang Zong, Yifeng Xie, Tian Song, Hainong Zhang, Jian |
author_sort | Liu, Yang |
collection | PubMed |
description | [Image: see text] Thermal pretreatment (TP) was an effective method to improve the anaerobic digestion of waste-activated sludge. In order to balance the energy consumption of sludge TP integrated with anaerobic digestion, food waste was introduced as a co-substrate to achieve an energy self-sustainable sludge treatment system. An anaerobic biodegradability test was performed using thermal pretreated sludge and food waste in order to clarify the kinetics and mechanism of co-digestion, especially the synergetic effect on specific methane yield. The prominent synergetic effect was an initial acceleration of cumulative methane production by 20.7–23.8% observed during the first 15 days. The modified Gompertz model presented a better agreement of the experimental results, and it was a suitable tool for methane production prediction of mono- and co-digestion. The energy assessment showed that co-digestion with food waste was a sustainable solution. When the moisture content of the TP sludge was 80–90%, the energy compensation required was about 0.04–0.22 t VS(Foodwaste)/t VS(Sludge), which could maintain the integration of neutral or even positive energy between TP and anaerobic digestion. |
format | Online Article Text |
id | pubmed-9631406 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-96314062022-11-04 Anaerobic Co-Digestion with Food Waste: A Possible Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment Liu, Yang Zong, Yifeng Xie, Tian Song, Hainong Zhang, Jian ACS Omega [Image: see text] Thermal pretreatment (TP) was an effective method to improve the anaerobic digestion of waste-activated sludge. In order to balance the energy consumption of sludge TP integrated with anaerobic digestion, food waste was introduced as a co-substrate to achieve an energy self-sustainable sludge treatment system. An anaerobic biodegradability test was performed using thermal pretreated sludge and food waste in order to clarify the kinetics and mechanism of co-digestion, especially the synergetic effect on specific methane yield. The prominent synergetic effect was an initial acceleration of cumulative methane production by 20.7–23.8% observed during the first 15 days. The modified Gompertz model presented a better agreement of the experimental results, and it was a suitable tool for methane production prediction of mono- and co-digestion. The energy assessment showed that co-digestion with food waste was a sustainable solution. When the moisture content of the TP sludge was 80–90%, the energy compensation required was about 0.04–0.22 t VS(Foodwaste)/t VS(Sludge), which could maintain the integration of neutral or even positive energy between TP and anaerobic digestion. American Chemical Society 2022-10-24 /pmc/articles/PMC9631406/ /pubmed/36340169 http://dx.doi.org/10.1021/acsomega.2c03700 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Liu, Yang Zong, Yifeng Xie, Tian Song, Hainong Zhang, Jian Anaerobic Co-Digestion with Food Waste: A Possible Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title | Anaerobic Co-Digestion
with Food Waste: A Possible
Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title_full | Anaerobic Co-Digestion
with Food Waste: A Possible
Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title_fullStr | Anaerobic Co-Digestion
with Food Waste: A Possible
Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title_full_unstemmed | Anaerobic Co-Digestion
with Food Waste: A Possible
Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title_short | Anaerobic Co-Digestion
with Food Waste: A Possible
Alternative to Overcome the Energy Deficit of Sludge Thermal Pretreatment |
title_sort | anaerobic co-digestion
with food waste: a possible
alternative to overcome the energy deficit of sludge thermal pretreatment |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9631406/ https://www.ncbi.nlm.nih.gov/pubmed/36340169 http://dx.doi.org/10.1021/acsomega.2c03700 |
work_keys_str_mv | AT liuyang anaerobiccodigestionwithfoodwasteapossiblealternativetoovercometheenergydeficitofsludgethermalpretreatment AT zongyifeng anaerobiccodigestionwithfoodwasteapossiblealternativetoovercometheenergydeficitofsludgethermalpretreatment AT xietian anaerobiccodigestionwithfoodwasteapossiblealternativetoovercometheenergydeficitofsludgethermalpretreatment AT songhainong anaerobiccodigestionwithfoodwasteapossiblealternativetoovercometheenergydeficitofsludgethermalpretreatment AT zhangjian anaerobiccodigestionwithfoodwasteapossiblealternativetoovercometheenergydeficitofsludgethermalpretreatment |