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 rat...

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Main Authors: Seni Karnchanawong, Kraiwet Kabtum
Format: Book Series
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84904052447&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/45238
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-452382018-01-24T06:07:11Z Toxicity of sodium and potassium ions on performance of UASB system Seni Karnchanawong Kraiwet Kabtum 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/(m 3 -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. 2018-01-24T06:07:11Z 2018-01-24T06:07:11Z 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/6653943832/45238
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
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/(m 3 -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
spellingShingle Seni Karnchanawong
Kraiwet Kabtum
Toxicity of sodium and potassium ions on performance of UASB system
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/6653943832/45238
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