Toxicity of sodium and potassium ions on performance of UASB system

The objective of this study was to investigate the toxicity of Na+and K+ions on performance of upflow anaerobic sludge blanket (UASB) system. Three laboratory-scale UASB reactors, 15.8 - l working volume, were employed with 1 reactor operated as control. They were loaded at organic loading rate (OLR...

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Main Authors: Seni Karnchanawong, Kraiwet Kabtum
Format: Book Series
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/53510
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-535102018-09-04T09:50:39Z Toxicity of sodium and potassium ions on performance of UASB system Seni Karnchanawong Kraiwet Kabtum Engineering The objective of this study was to investigate the toxicity of Na+and K+ions on performance of upflow anaerobic sludge blanket (UASB) system. Three laboratory-scale UASB reactors, 15.8 - l working volume, were employed with 1 reactor operated as control. They were loaded at organic loading rate (OLR) of 5 kg COD/(m3-d), treating synthetic wastewater with COD concentration ~ 5000 mg/l. Na+and K+ions were added in the range of 1010 - 7180 and 41 - 7320 mg/l, respectively. No toxicity was observed at influent Na+and K+concentrations up to 3340 and 2750 mg/l, respectively. Slight inhibitions on COD removal were founded at Na+and K+concentrations of 4610 and 3920 mg/l, respectively, but moderate effect on biogas production had occurred. When Na+and K+concentrations were increased to 7180 and 7320 mg/l, respectively, strong inhibitions were observed with COD removal dropped to 45.5 and 48.8%, respectively. Ratios of biogas productions, as compared to the control reactor, were dropped to 0.31 and 0.32, respectively. Increasing cation concentrations had more detrimental effect on biogas production than COD removal. © (2014) Trans Tech Publications, Switzerland. 2018-09-04T09:50:39Z 2018-09-04T09:50:39Z 2014-01-01 Book Series 16628985 10226680 2-s2.0-84904052447 10.4028/www.scientific.net/AMR.953-954.1105 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84904052447&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/53510
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
spellingShingle Engineering
Seni Karnchanawong
Kraiwet Kabtum
Toxicity of sodium and potassium ions on performance of UASB system
description The objective of this study was to investigate the toxicity of Na+and K+ions on performance of upflow anaerobic sludge blanket (UASB) system. Three laboratory-scale UASB reactors, 15.8 - l working volume, were employed with 1 reactor operated as control. They were loaded at organic loading rate (OLR) of 5 kg COD/(m3-d), treating synthetic wastewater with COD concentration ~ 5000 mg/l. Na+and K+ions were added in the range of 1010 - 7180 and 41 - 7320 mg/l, respectively. No toxicity was observed at influent Na+and K+concentrations up to 3340 and 2750 mg/l, respectively. Slight inhibitions on COD removal were founded at Na+and K+concentrations of 4610 and 3920 mg/l, respectively, but moderate effect on biogas production had occurred. When Na+and K+concentrations were increased to 7180 and 7320 mg/l, respectively, strong inhibitions were observed with COD removal dropped to 45.5 and 48.8%, respectively. Ratios of biogas productions, as compared to the control reactor, were dropped to 0.31 and 0.32, respectively. Increasing cation concentrations had more detrimental effect on biogas production than COD removal. © (2014) Trans Tech Publications, Switzerland.
format Book Series
author Seni Karnchanawong
Kraiwet Kabtum
author_facet Seni Karnchanawong
Kraiwet Kabtum
author_sort Seni Karnchanawong
title Toxicity of sodium and potassium ions on performance of UASB system
title_short Toxicity of sodium and potassium ions on performance of UASB system
title_full Toxicity of sodium and potassium ions on performance of UASB system
title_fullStr Toxicity of sodium and potassium ions on performance of UASB system
title_full_unstemmed Toxicity of sodium and potassium ions on performance of UASB system
title_sort toxicity of sodium and potassium ions on performance of uasb system
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84904052447&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/53510
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