Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method

"n "nBackgrounds and Objectives:Arsenic is one of the most toxic and dangerous elements in drinking  water that with increase in its application in agriculture, development of applications in agriculture, livestock, medicine, industry and other cases its entry to water resources a...

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Main Authors: E Bazrafshan, F Kord Mostafapour, H Kamani
Format: Article
Language:fas
Published: Tehran University of Medical Sciences 2010-10-01
Series:سلامت و محیط
Subjects:
Online Access:http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/17040.pdf&manuscript_id=17040
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spelling doaj-b95e41cde4954bd1a7ca0bde44fe4b8e2021-09-02T04:41:47ZfasTehran University of Medical Sciencesسلامت و محیط2008-20292008-37182010-10-0133309318Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation MethodE BazrafshanF Kord MostafapourH Kamani"n "nBackgrounds and Objectives:Arsenic is one of the most toxic and dangerous elements in drinking  water that with increase in its application in agriculture, development of applications in agriculture, livestock, medicine, industry and other cases its entry to water resources and environment is much easier.Arsenic is a poisonous, cumulative substance and inhibitor of SH group enzymes and various studies revealed a significant correlation between high concentrations of arsenic in drinking water and liver cancer, nasal cavity cancer, lungs, skin, bladder and kidney cancer in men and women and prostate and liver in men. The aim of this was survey of arsenic removed from water using dissolved air floatation mechanism."nMaterials and Methods: At present study in first step for determination best conditions of arsenic removal by dissolved air floatation method, optimum amount of coagulants determined and then synthetic solution of arsenic (50, 100 and 200 µg/L) prepared using sodium arsenate. In third step arsenic removal efficiency under various variables such as arsenic concentration, flocculation and floatation time and saturation pressure were analyzed. Finally residual arsenic concentration was determined by the silver diethyl dithiocarbamate method."nResults:Effect of optimum condition on arsenic removal efficiency at various initial concentration 50, 100 and 200 µg/Lshowed that the best coagulant for removal of arsenic is polyaluminumchloride. Also maximum efficiency (99.4%) was obtained in initial concentration equal 200 µg/L."nConclusion: It can be concluded that dissolved air floatation method with poly aluminum chloride as coagulant have high efficiency for arsenic removal even at high concentrations and therefore this method can be used for removal of arsenic from water as a suitable and safe option. http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/17040.pdf&manuscript_id=17040 ArsenicDissolved air floatationCoagulation and flocculationWater treatment
collection DOAJ
language fas
format Article
sources DOAJ
author E Bazrafshan
F Kord Mostafapour
H Kamani
spellingShingle E Bazrafshan
F Kord Mostafapour
H Kamani
Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
سلامت و محیط
Arsenic
Dissolved air floatation
Coagulation and flocculation
Water treatment
author_facet E Bazrafshan
F Kord Mostafapour
H Kamani
author_sort E Bazrafshan
title Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
title_short Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
title_full Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
title_fullStr Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
title_full_unstemmed Survey of Arsenic Removal fromWater by Coagulation and Dissolved Air Floatation Method
title_sort survey of arsenic removal fromwater by coagulation and dissolved air floatation method
publisher Tehran University of Medical Sciences
series سلامت و محیط
issn 2008-2029
2008-3718
publishDate 2010-10-01
description "n "nBackgrounds and Objectives:Arsenic is one of the most toxic and dangerous elements in drinking  water that with increase in its application in agriculture, development of applications in agriculture, livestock, medicine, industry and other cases its entry to water resources and environment is much easier.Arsenic is a poisonous, cumulative substance and inhibitor of SH group enzymes and various studies revealed a significant correlation between high concentrations of arsenic in drinking water and liver cancer, nasal cavity cancer, lungs, skin, bladder and kidney cancer in men and women and prostate and liver in men. The aim of this was survey of arsenic removed from water using dissolved air floatation mechanism."nMaterials and Methods: At present study in first step for determination best conditions of arsenic removal by dissolved air floatation method, optimum amount of coagulants determined and then synthetic solution of arsenic (50, 100 and 200 µg/L) prepared using sodium arsenate. In third step arsenic removal efficiency under various variables such as arsenic concentration, flocculation and floatation time and saturation pressure were analyzed. Finally residual arsenic concentration was determined by the silver diethyl dithiocarbamate method."nResults:Effect of optimum condition on arsenic removal efficiency at various initial concentration 50, 100 and 200 µg/Lshowed that the best coagulant for removal of arsenic is polyaluminumchloride. Also maximum efficiency (99.4%) was obtained in initial concentration equal 200 µg/L."nConclusion: It can be concluded that dissolved air floatation method with poly aluminum chloride as coagulant have high efficiency for arsenic removal even at high concentrations and therefore this method can be used for removal of arsenic from water as a suitable and safe option.
topic Arsenic
Dissolved air floatation
Coagulation and flocculation
Water treatment
url http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/17040.pdf&manuscript_id=17040
work_keys_str_mv AT ebazrafshan surveyofarsenicremovalfromwaterbycoagulationanddissolvedairfloatationmethod
AT fkordmostafapour surveyofarsenicremovalfromwaterbycoagulationanddissolvedairfloatationmethod
AT hkamani surveyofarsenicremovalfromwaterbycoagulationanddissolvedairfloatationmethod
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