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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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 |
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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. |
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Seni Karnchanawong Kraiwet Kabtum |
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Seni Karnchanawong Kraiwet Kabtum |
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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 |
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2018 |
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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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