| Food waste decomposition in leachbed reactor: role of neutralizing solutions on the leachate quality. | |
| | |
MedLine Citation:
|
PMID: 19932958 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The neutralization effects of 0.1M NaHCO(3), KPO(4)-buffer (pH 7.0) and sodium acetate (NaOAc) solutions (500 ml/kg food waste/day) on controlling the pH and leachate quality in an acidogenic reactor of food waste anaerobic digestion was investigated. pH of leachate from the reactor was low and ranged from 3.24 to 4.15. Although differences in chemical oxygen demand (COD) were observed, the cumulative COD yields were almost similar. Ammonia concentrations gradually decreased from 26 to 3mg/l after 15 days. Acetic acid was the major fraction and the total VFAs decreased gradually for a week and increased thereafter, with a sharp increase in NaOAc treatment. VFAs yield and acetate/propionate ratio were the highest in NaOAc treatment, followed by NaHCO(3) and KPO(4) treatments. Volatile solids reduction was the lowest in NaOAc treatment (47.5%) and highest in NaHCO(3) treatment (67.0%). With lower decomposition and higher yield of VFA and COD, NaOAc could be used as a neutralizing agent in acidogenic reactors to improve the efficiency of the acidogenesis process. |
| | |
Authors:
|
Ammaiyappan Selvam; Su Yun Xu; Xiang Yang Gu; Jonathan W C Wong |
Related Documents
:
|
11775178 - Action and distribution of organic solvent contaminations in hydrating cement: time-res... 11757618 - Factors controlling alkylbenzene sorption to municipal solid waste. 12870638 - An in depth study of the effects of socio-economic conditions on household waste recycl... 12718968 - Effects of copper chloride on formation of polychlorinated dibenzo-p-dioxins in model w... 4042628 - Induction, isolation and a characterization of the lipid content of plasma vitellogenin... 2484438 - A new colorimetric nucleic acid hybridization assay for listeria in foods. |
Publication Detail:
|
Type: Journal Article Date: 2009-11-24 |
Journal Detail:
|
Title: Bioresource technology Volume: 101 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-02-03 Completed Date: 2010-10-22 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
|
Languages: eng Pagination: 1707-14 Citation Subset: IM |
Copyright Information:
|
Copyright (c) 2009 Elsevier Ltd. All rights reserved. |
Affiliation:
|
Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Hong Kong SAR. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acetates
/
chemistry Acetic Acid / chemistry Ammonia / chemistry Bioreactors* Buffers Equipment Design Fatty Acids, Volatile / chemistry Food* Hydrogen-Ion Concentration Hydrolysis Nitrogen / chemistry Oxygen / chemistry Propionic Acids / chemistry Refuse Disposal / methods* Sodium Acetate / chemistry |
| Chemical | |
Reg. No./Substance:
|
0/Acetates; 0/Buffers; 0/Fatty Acids, Volatile; 0/Propionic Acids; 6131-90-4/Sodium Acetate; 64-19-7/Acetic Acid; 7664-41-7/Ammonia; 7727-37-9/Nitrogen; 7782-44-7/Oxygen; 79-09-4/propionic acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Anaerobic digested dairy manure as a nutrient supplement for cultivation of oil-rich green microalga...
Next Document: Influence of recirculation in a lab-scale vertical flow constructed wetland on the treatment efficie...