Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review

Arsenic contamination of alluvial aquifers of the Bengal delta plain causes a serious threat to human health for over 75 million people. The study aimed to explore the impacts of chemical fertilizer on arsenic mobilization in the sedimentary deposition of the alluvial Bengal delta plain. It selected...

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Autores principales:	Md. Shajedul Islam, M. G. Mostafa
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	aquifer sediment arsenic mobilization bengal delta plain fertilizer leaching lithology redox reaction Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/c49a69b6cc4b4d8a959afdb39688a21b
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spelling	oai:doaj.org-article:c49a69b6cc4b4d8a959afdb39688a21b2021-11-05T17:19:23ZInfluence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review2709-80282709-803610.2166/aqua.2021.043https://doaj.org/article/c49a69b6cc4b4d8a959afdb39688a21b2021-11-01T00:00:00Zhttp://aqua.iwaponline.com/content/70/7/948https://doaj.org/toc/2709-8028https://doaj.org/toc/2709-8036Arsenic contamination of alluvial aquifers of the Bengal delta plain causes a serious threat to human health for over 75 million people. The study aimed to explore the impacts of chemical fertilizer on arsenic mobilization in the sedimentary deposition of the alluvial Bengal delta plain. It selected ten comparatively highly affected districts and the least affected two divisions as a referral study site. The countrywide pooled concentration of arsenic in groundwater was 109.75 μg/L (52.59, 166.91) at a 95% confidence interval, which was double the national guideline value (50 μg/L). The analysis results showed a strong positive correlation (r ≥ 0.5) of arsenic with NO3, NH4, PO4, SO4, Ca, and K, where a portion of those species originated from fertilizer leaching into groundwater. The results showed that PO4 played a significant role in arsenic mobilization, but the role of NO3, SO4, and NH4 was not clear at certain lithological conditions. It also showed that clay, peat, silt-clay, and rich microbial community with sufficiently organic carbon loaded soils could lead to an increase in arsenic mobilization. Finally, the study observed that the overall lithological conditions are the main reason for the high arsenic load in the study area. HIGHLIGHTS The groundwater of the Bengal delta basin is highly contaminated with arsenic.; Arsenic significantly correlated with originated fertilizer species: NO3, NH4, PO4, SO4, Ca, and K.; Clayey, peaty, and silt-clay soil with heavy microbial and organic matters enhanced the arsenic mobilization by fertilizers leaching.; Lithological conditions are the major reasons for arsenic toxicity in groundwater.;Md. Shajedul IslamM. G. MostafaIWA Publishingarticleaquifer sedimentarsenic mobilizationbengal delta plainfertilizer leachinglithologyredox reactionEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENAqua, Vol 70, Iss 7, Pp 948-970 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aquifer sediment arsenic mobilization bengal delta plain fertilizer leaching lithology redox reaction Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	aquifer sediment arsenic mobilization bengal delta plain fertilizer leaching lithology redox reaction Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Md. Shajedul Islam M. G. Mostafa Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
description	Arsenic contamination of alluvial aquifers of the Bengal delta plain causes a serious threat to human health for over 75 million people. The study aimed to explore the impacts of chemical fertilizer on arsenic mobilization in the sedimentary deposition of the alluvial Bengal delta plain. It selected ten comparatively highly affected districts and the least affected two divisions as a referral study site. The countrywide pooled concentration of arsenic in groundwater was 109.75 μg/L (52.59, 166.91) at a 95% confidence interval, which was double the national guideline value (50 μg/L). The analysis results showed a strong positive correlation (r ≥ 0.5) of arsenic with NO3, NH4, PO4, SO4, Ca, and K, where a portion of those species originated from fertilizer leaching into groundwater. The results showed that PO4 played a significant role in arsenic mobilization, but the role of NO3, SO4, and NH4 was not clear at certain lithological conditions. It also showed that clay, peat, silt-clay, and rich microbial community with sufficiently organic carbon loaded soils could lead to an increase in arsenic mobilization. Finally, the study observed that the overall lithological conditions are the main reason for the high arsenic load in the study area. HIGHLIGHTS The groundwater of the Bengal delta basin is highly contaminated with arsenic.; Arsenic significantly correlated with originated fertilizer species: NO3, NH4, PO4, SO4, Ca, and K.; Clayey, peaty, and silt-clay soil with heavy microbial and organic matters enhanced the arsenic mobilization by fertilizers leaching.; Lithological conditions are the major reasons for arsenic toxicity in groundwater.;
format	article
author	Md. Shajedul Islam M. G. Mostafa
author_facet	Md. Shajedul Islam M. G. Mostafa
author_sort	Md. Shajedul Islam
title	Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
title_short	Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
title_full	Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
title_fullStr	Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
title_full_unstemmed	Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review
title_sort	influence of chemical fertilizers on arsenic mobilization in the alluvial bengal delta plain: a critical review
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c49a69b6cc4b4d8a959afdb39688a21b
work_keys_str_mv	AT mdshajedulislam influenceofchemicalfertilizersonarsenicmobilizationinthealluvialbengaldeltaplainacriticalreview AT mgmostafa influenceofchemicalfertilizersonarsenicmobilizationinthealluvialbengaldeltaplainacriticalreview
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Influence of chemical fertilizers on arsenic mobilization in the alluvial Bengal delta plain: a critical review

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