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Air scrubbers : fonctional monitoring by measuring conductivity
Authors: DUMONT ERIC, Lagadec Sol?ne, Guingand Nadine, LOYON LAURENCE, Amrane Abdeltif, Couvert Annabelle
Identifier: CSBE21737
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI)
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Description: Ammonia emitted by piggeries can be removed with an air scrubber: the polluted air crosses an inert packing material continuously moistened with water from a buffer tank. Ammonia absorbed by the water is converted to ammonium (NH4+) and then oxidized to nitrite (NO2-) and nitrate (NO3-) by microorganisms in the water. Since ammonia is highly water soluble, a removal efficiency of 70-80% can be expected. However, the accumulation of nitrogen ions (NH4+ + NO2- + NO3-) in the water causes the treatment efficiency to decrease. It is therefore necessary to improve management of air scrubbers by monitoring the water to determine how much should be replaced with fresh water to decrease accumulation of dissolved nitrogen ions. Water samples from six air scrubbers were collected and analyzed. This study supported the hypothesis of a correlation between electrical conductivity of water in the buffer tank and its amount of dissolved nitrogen ions. The linear regression determined was: ?([NH4+] + [NO2-] + [NO3-]) gN L-1 = 0.22 EC mS cm-1 (accuracy ? 20%, R?=0,945). Therefore, the amount of nitrogen ions dissolved in the water can be estimated by measuring electrical conductivity.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 4 - Mitigation Strategies
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Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: France
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Ammonia emitted by piggeries can be removed with an air scrubber: the polluted air crosses an inert packing material continuously moistened with water from a buffer tank. Ammonia absorbed by the water is converted to ammonium (NH4+) and then oxidized to nitrite (NO2-) and nitrate (NO3-) by microorganisms in the water. Since ammonia is highly water soluble, a removal efficiency of 70-80% can be expected. However, the accumulation of nitrogen ions (NH4+ + NO2- + NO3-) in the water causes the treatment efficiency to decrease. It is therefore necessary to improve management of air scrubbers by monitoring the water to determine how much should be replaced with fresh water to decrease accumulation of dissolved nitrogen ions. Water samples from six air scrubbers were collected and analyzed. This study supported the hypothesis of a correlation between electrical conductivity of water in the buffer tank and its amount of dissolved nitrogen ions. The linear regression determined was: ?([NH4+] + [NO2-] + [NO3-]) gN L-1 = 0.22 EC mS cm-1 (accuracy ? 20%, R?=0,945). Therefore, the amount of nitrogen ions dissolved in the water can be estimated by measuring electrical conductivity.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 4 - Mitigation Strategies
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: France
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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