Free chlorine loss during spray of membrane-less acidic electrolyzed water (MLAEW) and its antimicrobial effect on airborne bacteria from poultry house

dc.contributor.author Xin, Hongwei
dc.contributor.author Soupir, Michelle
dc.contributor.author Zhao, Yang
dc.contributor.author Xin, Hongwei
dc.contributor.author Zhao, Deling
dc.contributor.author Zheng, Weichao
dc.contributor.author Wang, Tong
dc.contributor.author Tian, Wei
dc.contributor.author Ma, He
dc.contributor.author Liu, Kai
dc.contributor.author Hu, Hui
dc.contributor.author Wang, Tong
dc.contributor.author Soupir, Michelle
dc.contributor.author Wang, Wei
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T13:48:22.000
dc.date.accessioned 2020-06-29T22:33:25Z
dc.date.available 2020-06-29T22:33:25Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2013
dc.date.embargo 2013-08-28
dc.date.issued 2013-07-01
dc.description.abstract <p>Spray-application of membrane-less acidic electrolyzed water (MLAEW) is a novel technique for disinfection in livestock houses. This study investigated the loss of free chlorine (FC, the major germicidal component in MLAEW) over distance during spray, as affected by air temperature and initial FC concentration. The antimicrobial effect of MLAEW on airborne bacteria from an aviary laying-hen house was examined. MLAEW was prepared with two FC concentrations (app. 15 and 60 mg L-1), and was sprayed at three air temperatures (18, 25, 32°C). The original MLAEW solution and MLAEW aerosols collected at 0, 25, and 50 cm from the spray nozzle were analyzed for FC concentrations. Bacteria were immersed into these MLAEW samples and numerated for viable count after 0.5-, 2-, and 5-min treatments. MLAEW aerosols collected at 0 cm lost 11.7 – 13.2% FC as compared to the original MLAEW solution. This initial loss was affected neither by the initial FC concentration (P = 0.13) nor by air temperature (P = 0.57). The rate of FC loss during travelling was 0.79 – 0.87 % per centimeter of aerosol travel distance (% cm-1) at 18°C, 1.08 – 1.15 % cm-1 at 25°C, and 1.35 – 1.49 % cm-1 at 32°C. This travelling loss was affected by air temperature (P = 0.02), but not by initial FC concentration (P = 0.38). Bacteria were completely inactivated in 0.5 min when treated with MLAEW samples with FC > 16.8 mg L-1, in 2 min when FC > 13.8 mg L-1, and in 5 min when FC > 7.2 mg L-1. Airborne bacteria from aviary hen house can be effectively inactivated by MLAEW with adequate FC concentration and contact time. During spray, antimicrobial efficacy of MLAEW aerosols decreased over distance due to FC loss which exacerbates at higher air temperature.</p>
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/318/
dc.identifier.articleid 1345
dc.identifier.contextkey 4521603
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/318
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/337
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/318/2013_ZhaoY_FreeChlorineLoss.pdf|||Fri Jan 14 23:32:41 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Food Science
dc.subject.keywords Aerospace Engineering
dc.subject.keywords Food Science and Human Nutrition
dc.subject.keywords Electrolyzed water
dc.subject.keywords inactivation
dc.subject.keywords airborne microorganisms
dc.subject.keywords livestock
dc.subject.keywords spraying
dc.title Free chlorine loss during spray of membrane-less acidic electrolyzed water (MLAEW) and its antimicrobial effect on airborne bacteria from poultry house
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication 36e0a8ce-fa2e-4df4-9f67-8d1717122650
relation.isAuthorOfPublication 04becbfb-7a97-4d96-a0dd-5514295530ee
relation.isAuthorOfPublication 8abd4880-ae81-4395-8ebb-00addaf5f60a
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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