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240219s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2024.02.015
|2 doi
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|a pubmed24n1316.xml
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|a (DE-627)NLM368587037
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|a (NLM)38368642
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|a (PII)S0956-053X(24)00100-4
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhou, Bo
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Aeration pre-treatment role in improving the performance of bio-conditioning dewatering of food waste anaerobic digestate
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 04.03.2024
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|a Date Revised 04.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 Elsevier Ltd. All rights reserved.
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|a Bio-conditioning dewatering followed by activated sludge process (BDAS) is a promising technology for purifying food waste anaerobic digestate (FWAD). However, the bio-conditioning dewatering efficiency is often affected by FWAD properties and ambient temperature. Here, we firstly reported that aeration pre-treatment of FWAD played an important role in improving the bio-conditioning dewatering performance of FWAD. The study found that the accumulated carbonate (CO32-) in FWAD severely affected the flocculation of Fe-containing flocculant formed in microbial fermentation liquor due to the competitive consumption of the flocculant by CO32-. The capillary suction time (CST) and specific resistance to filtration (SRF) of the bio-conditioned FWAD increased from initial 77.8 s and 2.0 × 1012 m/kg to 122.7 s and 3.4 × 1012 m/kg, respectively, within 1 day of aeration. Prolonged aeration pre-treatment of FWAD could reduce its CO32- concentration and total alkalinity. Additionally, the aeration pre-treatment simultaneously decreased the proportion of macromolecular organic matter that hindered dewatering and the content of total solids (TS) and hydrophilic protein-like substances in FWAD. After 20 days of aeration followed by bio-conditioning, the CST and SRF reduced to final 36.5 s and 2.3 × 1011 m/kg, respectively, indicating a substantial improvement in dewatering performance. Successive forced aeration combined with the addition of CaCl2 to eliminate adverse factors mainly CO32- was a feasible and cost-effective strategy to realize bio-conditioning dewatering of FWAD in less than 2 days and a lower reagents dose of bio-conditioning, which was helpful in the engineering application of the novel BDAS process for FWAD purification
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|a Journal Article
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|a Aeration pre-treatment
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|a Anaerobic digestate
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4 |
|a Bio-conditioning dewatering
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| 650 |
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4 |
|a Flocculation
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| 650 |
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4 |
|a Food waste
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| 650 |
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7 |
|a Food Loss and Waste
|2 NLM
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| 700 |
1 |
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|a Zhao, Guangliang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Cheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Dong, Yan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Dianzhan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liang, Jianru
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Mingjiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Dejin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Yujun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Jiansheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Lixiang
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 177(2024) vom: 01. März, Seite 298-306
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
1 |
8 |
|g volume:177
|g year:2024
|g day:01
|g month:03
|g pages:298-306
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| 856 |
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|u http://dx.doi.org/10.1016/j.wasman.2024.02.015
|3 Volltext
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