Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge
Bangkok, while improving the wastewater treatment in order to alleviate the river pollution, faces important amounts of sewage sludge. The sewage sludge contains organic matter, nitrogen and phosphorus available for plant growth. However, it may contain pathogenic microorganisms. To be used for agricultural purposes, these pathogens should be destroyed, which can be achieved with the thermophilic phase of composting. As the sewage sludge is dense and unable to compost alone (low C/N ratio), it should be mixed with an organic by-product. Two by-products available in large quantities in Thailand (wood chips and rice husk) have been tested for mixture with sewage sludge. As these products are not easy to decompose (presence of silica in rice husk and lignin / tannins in wood chips), the addition of a microbial activator for composting has been tested in controlled conditions (small quantities of organic mixtures, 55°C, moisture maintained at 60-70% of water holding capacity). The monitoring of the decomposition has been made by measuring the carbon dioxide respiration, pH, organic matter and nitrogen contents and the evolution of enzymatic activities. When mixed with sewage sludge, wood chips and rice husk do not show significant differences concerning decomposition after 63 days. The use of an activator within the experimental conditions does not improve the decomposition of organic matter contained in the mixture of sewage sludge anrice husk or wood chips.
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dig-cirad-fr-5411662023-06-26T11:26:13Z http://agritrop.cirad.fr/541166/ http://agritrop.cirad.fr/541166/ Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge. Pasda Nuanjun, Limtong Pitayakon, Oliver Robert, Montange Denis, Panichsakpatana Supamard. 2005. Environmental Technology, 26 (10) : 1127-1135.https://doi.org/10.1080/09593332608618481 <https://doi.org/10.1080/09593332608618481> Researchers Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge Pasda, Nuanjun Limtong, Pitayakon Oliver, Robert Montange, Denis Panichsakpatana, Supamard eng 2005 Environmental Technology Q70 - Traitement des déchets agricoles Bangkok, while improving the wastewater treatment in order to alleviate the river pollution, faces important amounts of sewage sludge. The sewage sludge contains organic matter, nitrogen and phosphorus available for plant growth. However, it may contain pathogenic microorganisms. To be used for agricultural purposes, these pathogens should be destroyed, which can be achieved with the thermophilic phase of composting. As the sewage sludge is dense and unable to compost alone (low C/N ratio), it should be mixed with an organic by-product. Two by-products available in large quantities in Thailand (wood chips and rice husk) have been tested for mixture with sewage sludge. As these products are not easy to decompose (presence of silica in rice husk and lignin / tannins in wood chips), the addition of a microbial activator for composting has been tested in controlled conditions (small quantities of organic mixtures, 55°C, moisture maintained at 60-70% of water holding capacity). The monitoring of the decomposition has been made by measuring the carbon dioxide respiration, pH, organic matter and nitrogen contents and the evolution of enzymatic activities. When mixed with sewage sludge, wood chips and rice husk do not show significant differences concerning decomposition after 63 days. The use of an activator within the experimental conditions does not improve the decomposition of organic matter contained in the mixture of sewage sludge anrice husk or wood chips. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/541166/1/541166.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1080/09593332608618481 10.1080/09593332608618481 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=174579 info:eu-repo/semantics/altIdentifier/doi/10.1080/09593332608618481 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1080/09593332608618481 |
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Q70 - Traitement des déchets agricoles Q70 - Traitement des déchets agricoles Pasda, Nuanjun Limtong, Pitayakon Oliver, Robert Montange, Denis Panichsakpatana, Supamard Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
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Bangkok, while improving the wastewater treatment in order to alleviate the river pollution, faces important amounts of sewage sludge. The sewage sludge contains organic matter, nitrogen and phosphorus available for plant growth. However, it may contain pathogenic microorganisms. To be used for agricultural purposes, these pathogens should be destroyed, which can be achieved with the thermophilic phase of composting. As the sewage sludge is dense and unable to compost alone (low C/N ratio), it should be mixed with an organic by-product. Two by-products available in large quantities in Thailand (wood chips and rice husk) have been tested for mixture with sewage sludge. As these products are not easy to decompose (presence of silica in rice husk and lignin / tannins in wood chips), the addition of a microbial activator for composting has been tested in controlled conditions (small quantities of organic mixtures, 55°C, moisture maintained at 60-70% of water holding capacity). The monitoring of the decomposition has been made by measuring the carbon dioxide respiration, pH, organic matter and nitrogen contents and the evolution of enzymatic activities. When mixed with sewage sludge, wood chips and rice husk do not show significant differences concerning decomposition after 63 days. The use of an activator within the experimental conditions does not improve the decomposition of organic matter contained in the mixture of sewage sludge anrice husk or wood chips. |
format |
article |
topic_facet |
Q70 - Traitement des déchets agricoles |
author |
Pasda, Nuanjun Limtong, Pitayakon Oliver, Robert Montange, Denis Panichsakpatana, Supamard |
author_facet |
Pasda, Nuanjun Limtong, Pitayakon Oliver, Robert Montange, Denis Panichsakpatana, Supamard |
author_sort |
Pasda, Nuanjun |
title |
Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
title_short |
Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
title_full |
Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
title_fullStr |
Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
title_full_unstemmed |
Influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
title_sort |
influence of bulking agents and microbial activator on thermophilic aerobic transformation of sewage sludge |
url |
http://agritrop.cirad.fr/541166/ http://agritrop.cirad.fr/541166/1/541166.pdf |
work_keys_str_mv |
AT pasdanuanjun influenceofbulkingagentsandmicrobialactivatoronthermophilicaerobictransformationofsewagesludge AT limtongpitayakon influenceofbulkingagentsandmicrobialactivatoronthermophilicaerobictransformationofsewagesludge AT oliverrobert influenceofbulkingagentsandmicrobialactivatoronthermophilicaerobictransformationofsewagesludge AT montangedenis influenceofbulkingagentsandmicrobialactivatoronthermophilicaerobictransformationofsewagesludge AT panichsakpatanasupamard influenceofbulkingagentsandmicrobialactivatoronthermophilicaerobictransformationofsewagesludge |
_version_ |
1770192450223079424 |