Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation

Liquid-state bioconversion (LSB) technique has great potential for application in bioremediation of sewage sludge. The purpose of this study is to determine the optimum level of LSB process of sewage sludge treatment by mixed fungal (Aspergillus niger and Penicillium corylophilum) inoculation in a p...

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Main Authors: Abdul Rahman, Roshanida, Molla, Abul Hossain, Barghash, Hind F. A., Ahmadun, Fakhru'l-Razi
Format: Article
Sprog:English
Udgivet: Taylor & Francis 2016
Online adgang:http://psasir.upm.edu.my/id/eprint/28927/1/Optimization%20of%20process%20parameters%20for%20pilot-scale%20liquid-state%20bioconversion%20of%20sewage%20sludge%20by%20mixed%20fungal%20inoculation.pdf
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spelling oai:psasir.upm.edu.my:28927 http://psasir.upm.edu.my/id/eprint/28927/ Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation Abdul Rahman, Roshanida Molla, Abul Hossain Barghash, Hind F. A. Ahmadun, Fakhru'l-Razi Liquid-state bioconversion (LSB) technique has great potential for application in bioremediation of sewage sludge. The purpose of this study is to determine the optimum level of LSB process of sewage sludge treatment by mixed fungal (Aspergillus niger and Penicillium corylophilum) inoculation in a pilot-scale bioreactor. The optimization of process factors was investigated using response surface methodology based on Box–Behnken design considering hydraulic retention time (HRT) and substrate influent concentration (S0) on nine responses for optimizing and fitted to the regression model. The optimum region was successfully depicted by optimized conditions, which was identified as the best fit for convenient multiple responses. The results from process verification were in close agreement with those obtained through predictions. Considering five runs of different conditions of HRT (low, medium and high 3.62, 6.13 and 8.27 days, respectively) with the range of S0 value (the highest 12.56 and the lowest 7.85 g L−1), it was monitored as the lower HRT was considered as the best option because it required minimum days of treatment than the others with influent concentration around 10 g L−1. Therefore, optimum process factors of 3.62 days for HRT and 10.12 g L−1 for S0 were identified as the best fit for LSB process and its performance was deviated by less than 5% in most of the cases compared to the predicted values. The recorded optimized results address a dynamic development in commercial-scale biological treatment of wastewater for safe and environment-friendly disposal in near future. Taylor & Francis 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/28927/1/Optimization%20of%20process%20parameters%20for%20pilot-scale%20liquid-state%20bioconversion%20of%20sewage%20sludge%20by%20mixed%20fungal%20inoculation.pdf Abdul Rahman, Roshanida and Molla, Abul Hossain and Barghash, Hind F. A. and Ahmadun, Fakhru'l-Razi (2016) Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation. Environmental Technology, 37 (1). pp. 1-15. ISSN 0959-3330; ESSN: 1479-487X http://www.tandfonline.com/doi/abs/10.1080/09593330.2015.1058860?journalCode=tent20 10.1080/09593330.2015.1058860
institution UPM IR
collection UPM IR
language English
description Liquid-state bioconversion (LSB) technique has great potential for application in bioremediation of sewage sludge. The purpose of this study is to determine the optimum level of LSB process of sewage sludge treatment by mixed fungal (Aspergillus niger and Penicillium corylophilum) inoculation in a pilot-scale bioreactor. The optimization of process factors was investigated using response surface methodology based on Box–Behnken design considering hydraulic retention time (HRT) and substrate influent concentration (S0) on nine responses for optimizing and fitted to the regression model. The optimum region was successfully depicted by optimized conditions, which was identified as the best fit for convenient multiple responses. The results from process verification were in close agreement with those obtained through predictions. Considering five runs of different conditions of HRT (low, medium and high 3.62, 6.13 and 8.27 days, respectively) with the range of S0 value (the highest 12.56 and the lowest 7.85 g L−1), it was monitored as the lower HRT was considered as the best option because it required minimum days of treatment than the others with influent concentration around 10 g L−1. Therefore, optimum process factors of 3.62 days for HRT and 10.12 g L−1 for S0 were identified as the best fit for LSB process and its performance was deviated by less than 5% in most of the cases compared to the predicted values. The recorded optimized results address a dynamic development in commercial-scale biological treatment of wastewater for safe and environment-friendly disposal in near future.
format Article
author Abdul Rahman, Roshanida
Molla, Abul Hossain
Barghash, Hind F. A.
Ahmadun, Fakhru'l-Razi
spellingShingle Abdul Rahman, Roshanida
Molla, Abul Hossain
Barghash, Hind F. A.
Ahmadun, Fakhru'l-Razi
Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
author_facet Abdul Rahman, Roshanida
Molla, Abul Hossain
Barghash, Hind F. A.
Ahmadun, Fakhru'l-Razi
author_sort Abdul Rahman, Roshanida
title Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
title_short Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
title_full Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
title_fullStr Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
title_full_unstemmed Optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
title_sort optimization of process parameters for pilot-scale liquid-state bioconversion of sewage sludge by mixed fungal inoculation
publisher Taylor & Francis
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/28927/1/Optimization%20of%20process%20parameters%20for%20pilot-scale%20liquid-state%20bioconversion%20of%20sewage%20sludge%20by%20mixed%20fungal%20inoculation.pdf
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score 13.4562235