Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study

This research work was focused to evaluate the concentration of heavy metals (i.e., Cr, Pb, Mn, Cu and Fe) in sediment samples collected from the Dhaleshwari River near the area of a newly established tannery industrial estate, Savar, Bangladesh. The heavy metals in sediment samples were ascertained...

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Autores principales:	M. Safiur Rahman, Zia Ahmed, Sirajum Munir Seefat, Rafiul Alam, Abu Reza Md Towfiqul Islam, Tasrina Rabia Choudhury, Bilkis Ara Begum, Abubakr M. Idris
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2022
Materias:	Tannery Toxic metal Sediment Pollution level Ecological risk Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/5dff111525f34a4ea050eff3673747d0
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spelling	oai:doaj.org-article:5dff111525f34a4ea050eff3673747d02021-11-20T05:13:25ZAssessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study2590-182610.1016/j.enceco.2021.10.001https://doaj.org/article/5dff111525f34a4ea050eff3673747d02022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590182621000291https://doaj.org/toc/2590-1826This research work was focused to evaluate the concentration of heavy metals (i.e., Cr, Pb, Mn, Cu and Fe) in sediment samples collected from the Dhaleshwari River near the area of a newly established tannery industrial estate, Savar, Bangladesh. The heavy metals in sediment samples were ascertained by the atomic absorption spectrophotometer (AAS). This study revealed that the metal concentration for chromium (Cr), lead (Pb), manganese (Mn), copper (Cu) and iron (Fe) were found to be 14.8–748 (186 ± 241) mg/kg, 2.38–21.1 (8.78 ± 6.15) mg/kg, 1.59–6.29 (3.12 ± 1.38) mg/kg, 0.36–4.75 (1.76 ± 1.47) mg/kg and 3.87–154 (42.7 ± 49.1) mg/kg (dry wt) respectively. The concentration of heavy metals in sediment samples descends with the following order: Cr > Fe > Pb > Mn > Cu. Sediment contamination was assessed on the basis of geo-accumulation index (Igeo), contamination factor (CF) and pollution load index (PLI). The average Igeo values for Cr, Pb, Mn, Cu and Fe were found to be (−0.44 ± 1.87), (−2.18 ± 1.20), (−8.80 ± 0.63), (−5.80 ± 1.36) and (1.59 ± 1.87) respectively. The Igeo values values of Cr and Fe for some sampling stations were found to be higher. The PLI value for all the sample stations (S1-S8) were 0.58, 0.66, 0.71, 0.69, 0.88, 0.86, 0.83 and 0.83 correspondingly. The CF values for Cr and Fe in some stations was observed at moderate, considerate and high contamination level. The spatial distribution of heavy metals in the study area was presented by interpolation technique. The results of spatial distribution pattern showed that the high concentrated zones of Cr was found at the dumping zone (~S5) of the leather industrial city. On the other hand, the spatial distribution pattern for the studied metals (Pb, Mn, Cu and Fe) showed that the maximum metals concentrations were found in the southeastern part, which was nearby effluent dumping zone. The ecological risk assessment in sediment samples revealed that there is no significant risk observed by the metal(oid)s at this moment. Considering Cr concentration, the modified hazard quotient (mHQ) showed that about 75% of the samples were low to severely polluted by Cr, while 25% of the samples were extremely polluted by Cr as well as mHQ ≤ 3.5. Based on PMF analysis, two potential sources of heavy metals were identified in the study region: first, biochemical and leather tanning industries (Cr); second, the mixed effect of geogenic sources and atmospheric deposition and traffic emission (Fe and Pb).M. Safiur RahmanZia AhmedSirajum Munir SeefatRafiul AlamAbu Reza Md Towfiqul IslamTasrina Rabia ChoudhuryBilkis Ara BegumAbubakr M. IdrisKeAi Communications Co., Ltd.articleTanneryToxic metalSedimentPollution levelEcological riskEnvironmental technology. Sanitary engineeringTD1-1066ENEnvironmental Chemistry and Ecotoxicology, Vol 4, Iss , Pp 1-12 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Tannery Toxic metal Sediment Pollution level Ecological risk Environmental technology. Sanitary engineering TD1-1066
spellingShingle	Tannery Toxic metal Sediment Pollution level Ecological risk Environmental technology. Sanitary engineering TD1-1066 M. Safiur Rahman Zia Ahmed Sirajum Munir Seefat Rafiul Alam Abu Reza Md Towfiqul Islam Tasrina Rabia Choudhury Bilkis Ara Begum Abubakr M. Idris Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
description	This research work was focused to evaluate the concentration of heavy metals (i.e., Cr, Pb, Mn, Cu and Fe) in sediment samples collected from the Dhaleshwari River near the area of a newly established tannery industrial estate, Savar, Bangladesh. The heavy metals in sediment samples were ascertained by the atomic absorption spectrophotometer (AAS). This study revealed that the metal concentration for chromium (Cr), lead (Pb), manganese (Mn), copper (Cu) and iron (Fe) were found to be 14.8–748 (186 ± 241) mg/kg, 2.38–21.1 (8.78 ± 6.15) mg/kg, 1.59–6.29 (3.12 ± 1.38) mg/kg, 0.36–4.75 (1.76 ± 1.47) mg/kg and 3.87–154 (42.7 ± 49.1) mg/kg (dry wt) respectively. The concentration of heavy metals in sediment samples descends with the following order: Cr > Fe > Pb > Mn > Cu. Sediment contamination was assessed on the basis of geo-accumulation index (Igeo), contamination factor (CF) and pollution load index (PLI). The average Igeo values for Cr, Pb, Mn, Cu and Fe were found to be (−0.44 ± 1.87), (−2.18 ± 1.20), (−8.80 ± 0.63), (−5.80 ± 1.36) and (1.59 ± 1.87) respectively. The Igeo values values of Cr and Fe for some sampling stations were found to be higher. The PLI value for all the sample stations (S1-S8) were 0.58, 0.66, 0.71, 0.69, 0.88, 0.86, 0.83 and 0.83 correspondingly. The CF values for Cr and Fe in some stations was observed at moderate, considerate and high contamination level. The spatial distribution of heavy metals in the study area was presented by interpolation technique. The results of spatial distribution pattern showed that the high concentrated zones of Cr was found at the dumping zone (~S5) of the leather industrial city. On the other hand, the spatial distribution pattern for the studied metals (Pb, Mn, Cu and Fe) showed that the maximum metals concentrations were found in the southeastern part, which was nearby effluent dumping zone. The ecological risk assessment in sediment samples revealed that there is no significant risk observed by the metal(oid)s at this moment. Considering Cr concentration, the modified hazard quotient (mHQ) showed that about 75% of the samples were low to severely polluted by Cr, while 25% of the samples were extremely polluted by Cr as well as mHQ ≤ 3.5. Based on PMF analysis, two potential sources of heavy metals were identified in the study region: first, biochemical and leather tanning industries (Cr); second, the mixed effect of geogenic sources and atmospheric deposition and traffic emission (Fe and Pb).
format	article
author	M. Safiur Rahman Zia Ahmed Sirajum Munir Seefat Rafiul Alam Abu Reza Md Towfiqul Islam Tasrina Rabia Choudhury Bilkis Ara Begum Abubakr M. Idris
author_facet	M. Safiur Rahman Zia Ahmed Sirajum Munir Seefat Rafiul Alam Abu Reza Md Towfiqul Islam Tasrina Rabia Choudhury Bilkis Ara Begum Abubakr M. Idris
author_sort	M. Safiur Rahman
title	Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
title_short	Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
title_full	Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
title_fullStr	Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
title_full_unstemmed	Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study
title_sort	assessment of heavy metal contamination in sediment at the newly established tannery industrial estate in bangladesh: a case study
publisher	KeAi Communications Co., Ltd.
publishDate	2022
url	https://doaj.org/article/5dff111525f34a4ea050eff3673747d0
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Assessment of heavy metal contamination in sediment at the newly established tannery industrial Estate in Bangladesh: A case study

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