Distribution, sources and ecological risk of trace elements and polycyclic aromatic hydrocarbons in sediments from a polluted urban river in central Bangladesh

Khan, Rahat; Islam, Md. Syful; Tareq, A. R. M.; Naher, Kamrun; Islam, Abu Reza Md. Towfiqul; Habib, Md. Ahosan; Siddique, Md. Abu Bakar; Islam, Mohammad Amirul; Das, Subrata Chandra; Rashid, Md. Bazlar; Ullah, Asmat; Miah, M.M.H.; Masrura, Sayeda Ummeh; Bodrud-Doza, Md.; Sarker, Mizanur Rahman; Badruzzaman, A. B. M.

doi:10.1016/j.enmm.2020.100318

Cited by 60 publications

(43 citation statements)

References 105 publications

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“…The heavy metals can be considered as the results of industrial and from the outputs of agricultural manufacturing. A recent study by Khan et al [33] showed that Cr in the sediment sample was (70 mg/kg) compared to our result that was (52.7 mg/kg) and Zinc is found 780 mg/kg compared to our result that was 293.1 mg/kg. In our study, Fe recorded high concentration in sediment samples (6687 mg/kg), close to reported data in sediments of SUEZ GULF (7497 mg/kg) [34].…”

Section: Wadi Zomer Flow Characterizationcontrasting

confidence: 80%

Efficacy of Natural Wetlands along Wadi Zomer as a Sustainable Phytoremediation Alternative for Industrial Effluents from Nablus West, Palestine

Attili¹,

Al-Sa’ed²

2020

Preprint

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This paper investigated the effectiveness of natural wetlands (Phragmites australis) along Wadi Zomer in reducing the organic and inorganic pollution loads from diverse industrial discharges including occasional emergency discharges from Nablus West Sewage Treatment Plant (NWSTP), Palestine. We monitored physical and chemical parameters at four selective sampling stations (S1-S4) along Wadi Zomer with a length of 5 km downstream of NWSTP to assess the purification capacity of Wadi Zomer treatment wetlands (water, sediment, and vegetation) with Phragmites australis in pollution loads reduction. The results showed that S2 (0+0.5 km) and S3 (0+3.0 km) reflected an increase in pollution loads due to illicit industrial discharge and sewer overflow discharge from NWSTP during emergency conditions. BOD values varied significantly along the sampling sites from 6.64 mg/l (S1) to 437.10 mg/l (S3). The BOD at S1 and S2 in water samples were below the Palestinian Water Standard (PWS) compared to S3 and S4 with 437.1 and 333.9 mg/l, respectively. Water samples from all sites (S1-S4) showed a decreasing tendency in heavy metals concentrations (Fe>Cu>Zn>Cr >Ni) and were below the PWS limits, sediment samples followed the same decrease pattern for Zn, Cr, and Ni content with Wadi Zomer flow course. The concentration of Fe (6687 mg/kg) and Cu (1384.7 mg/kg) were highest in the sediment samples (S1-S4); this might be due to non-point sources of pollution. The research demonstrated that phytoremediation is a sustainable nature-based technology for the restoration of heavily polluted surface water bodies in Palestine.

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Section: Wadi Zomer Flow Characterizationcontrasting

confidence: 80%

Efficacy of Natural Wetlands along Wadi Zomer as a Sustainable Phytoremediation Alternative for Industrial Effluents from Nablus West, Palestine

Attili¹,

Al-Sa’ed²

2020

Preprint

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“…The downstream part (Rupsha and Pashur Rivers) is characterized by a tidal to fluviotidal environment, and subtropical and subhumid climate conditions with land‐use patterns of vegetation (48.7%), wetland (16.5%), water bodies (16.4%), and agriculture land (16.0%). The alluvium of Recent age encompasses >80% of the total basin, and the late Quaternary sediments mostly consist of sand, silt, and clay, with a mineralogical composition of quartz, feldspars, and kaolinite (Khan et al 2020).…”

Section: Methodsmentioning

confidence: 99%

“…Calculation of the enrichment factor was done by dividing the ratio of each metal concentration and a reference metal concentration of that study by the same ratio of its background value (Khan et al 2020). The computation is done by Equation 6:

Enrichment factor = \frac{{(C_{metal} \div C_{Fe})}_{sample}}{{(C_{metal} \div C_{Fe})}_{background}}

where {(C_{metal} \div C_{Fe})}_{sample}

is the ratio of the concentration of metal with Fe in the sediment sample, and

{(C_{metal} \div C_{Fe})}_{background}

is the ratio of the concentration of metal with Fe in the background sample.…”

Section: Methodsmentioning

confidence: 99%

“…The background data were taken from an earlier study (Islam et al 2015). We adopted Fe as the reference metal because it was also used by Daskalakis and O'Connor (1995) and Khan et al (2020) in their studies.…”

Section: Methodsmentioning

confidence: 99%

“…Appraisal of metal contamination status, co‐occurrence networks, source apportionment, and ecotoxicological risk evaluation (which are important environmental determinants) is essential for constructing efficient water security regulation and management strategies on a national basin scale. Several studies have appraised the pollution status and ecotoxicological risks of metals in riverine sediments in different parts of the world, for instance, Ustaoğlua and Islam (2020) in Giresun, Northeast Turkey, and Ji et al (2019) in Baiyangdian Lake, China (also see Bhuiyan et al 2017; Xu et al 2019; Khan et al 2020; Xia et al 2020). To determine different metal concentrations, numerous indices have been constructed, such as the geo‐accumulation index (Igeo), enrichment factor, risk index, and toxicity unit in riverine sediments (Siddiqui and Pandey 2019; Niu et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Quantifying Source Apportionment, Co‐occurrence, and Ecotoxicological Risk of Metals from Upstream, Lower Midstream, and Downstream River Segments, Bangladesh

Islam

Hasanuzzaman

Islam

et al. 2020

Enviro Toxic and Chemistry

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The positive matrix factorization (PMF) receptor model was used for the first time to quantify the source contributions to heavy metal pollution of sediment on a national basin scale in the upstream, midstream, and downstream rivers (Teesta and Kortoya-Shitalakkah and Meghna-Rupsha and Pasur) of Bangladesh. The metal contamination status, cooccurrence, and ecotoxicological risk were also investigated. Sediment samples were collected from 30 sites at a depth range of 0 to 20 cm for analysis of 9 metals using inductively coupled plasma-mass spectrometry. The mean concentrations of metals varied for upstream, lower midstream, and downstream river segments. The results showed that chromium (Cr) exhibited a strong significant co-occurrence network with other metals (e.g., manganese [Mn], iron [Fe], and nickel [Ni]). Monte Carlo simulation results of the geo-accumulation index (Igeo; 63.3%) and risk indices (48.5%) showed that cadmium (Cd) was the main contributor to sediment pollution. However, the cumulative probabilities of sediments being polluted by metals were ranked as "moderate to heavily polluted" (Igeo 46.6%; risk index 16.7%). Toxicity unit results revealed that zinc (Zn) and Cd were the key toxic contributors to sediments. The PMF model predicted metal concentrations and identified 4 potential sources. The agricultural source (factor 1) mostly contributed to copper (Cu; 78.9%) and arsenic (As; 62.8%); Ni (96.9%) and Mn (83.5%) exhibited industrial point sources (factor 2), with 2 hot spots in northwestern and southwestern regions. Cadmium (93.5%) had anthropogenic point sources (factor 3), and Fe (64.3%) and Cr (53.5%) had a mixed source (factor 4). Spatially, similar patterns between PMF apportioning factors and predicted metal sources were identified, showing the efficiency of the model for river systems analysis. The degree of metal contamination in the river segments suggests an alarming condition for biotic components of the ecosystem.

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Environmental Impacts of Coal-Mining and Coal-Fired Power-Plant Activities in a Developing Country with Global Context

Habib¹,

Khan

2021

Environmental Challenges and Solutions

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To represent a comprehensive scenario regarding the coal mining and coal-fired power plant activities in a developing country (Bangladesh) and to understand the total environmental impacts, potential coal resources of Bangladesh, environmental geochemistry and dispersion of pollutants, eco-toxicological impacts, human health risks as well as socioeconomic impacts are evaluated in this chapter. Potential coal reserves along with the future plants are estimated. Technogenic sources of environmental pollutants including environmentally toxic heavy metals, health hazardous radionuclides, persistent organic pollutants, suspended particulate maters, etc. are assessed. In doing so, scarce associated data from coal mine (Barapukuria, Bangladesh) and Barapukuria coal-fired power plant (BTPP) of Bangladesh have been reconciled by using and arguing the previous works around the globe. Immense and proper literature reviews as well as the existing data on Barapukuria coal mine and BTPP are tabulated to compare and understand the condition along with the potential prevention and remediation approaches.

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Distribution, sources and ecological risk of trace elements and polycyclic aromatic hydrocarbons in sediments from a polluted urban river in central Bangladesh

Cited by 60 publications

References 105 publications

Efficacy of Natural Wetlands along Wadi Zomer as a Sustainable Phytoremediation Alternative for Industrial Effluents from Nablus West, Palestine

Efficacy of Natural Wetlands along Wadi Zomer as a Sustainable Phytoremediation Alternative for Industrial Effluents from Nablus West, Palestine

Quantifying Source Apportionment, Co‐occurrence, and Ecotoxicological Risk of Metals from Upstream, Lower Midstream, and Downstream River Segments, Bangladesh

Environmental Impacts of Coal-Mining and Coal-Fired Power-Plant Activities in a Developing Country with Global Context

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