Green environment suffers by discharging of high-chromium-containing wastewater from the tanneries at Hazaribagh, Bangladesh

Hashem, Md. Abul; Islam, A. K.M. Muzahidul; Mohsin, S. A.; Nur‐A‐Tomal, Md. Shahruk

doi:10.1007/s40899-015-0033-4

Cited by 34 publications

(11 citation statements)

References 11 publications

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“…Majority tanneries are situated at Hazaribagh area, located one and a half kilometer northeast to the river Buriganga in Dhaka, as shown in Figure 1 (Shams et al, 2009). A portion of the effluents from tanneries in Hazaribagh are transported to the lagoon while the other portion discharged into nearby low-lying areas through drain, which eventually falls into the Buriganga and introducing significant hazards in the surrounding environment (Hashem et al, 2015). It has already been reported that these tanneries discharge 1.6 tons of chromium per day, of which 0.35 tons are deposited into the lagoons and the remaining amount end up in the Buriganga (Karim et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hexavalent Chromium Pollution in Buriganga and Dhaleshwari River Waterbodies Adjacent to Tannery Estates in Bangladesh

Rahman

Hoque

Sarker³

et al. 2020

MIST International Journal of Science and Technology

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Recently, in Bangladesh, all tannery industries have been relocated to a new location exclusively established for leather processing industries with modern manufacturing facilities and effluent treatment plants with standard probations. Effluents generated from the tannery industries are now being disposed of into the surrounding river water bodies. In this study, our goal was to investigate the presence of chemical contaminants like hexavalent chromium (Cr6+) in the water bodies surrounding tannery industries and to understand the possible role played by the tannery effluents in contaminating the river water bodies with Cr6+. Result analysis revealed the presence of an amount of Cr6+ (ranging from 0.01 mg/L to 3.54 mg/L) in the surrounding water bodies, which was far above the maximum permissible limit of Cr6+ (0.05 mg/L for surface water), set by the Environmental Protection Agency. It is, therefore, plausible to assume that effluents from the tanneries play an important role in hexavalent chromium contamination of water bodies surrounding tannery industries.

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Section: Introductionmentioning

confidence: 99%

Assessment of Hexavalent Chromium Pollution in Buriganga and Dhaleshwari River Waterbodies Adjacent to Tannery Estates in Bangladesh

Rahman

Hoque

Sarker³

et al. 2020

MIST International Journal of Science and Technology

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“…It was found that the process of Cr(VI) sorption is pH‐dependent and that the obtained biochars are more active in the range of pH 2–3. Because hexavalent chromium is discharged at a strongly acidic pH (Hashem et al, 2015), all further adsorption experiments were carried out at an industrially relevant pH of 2.5. Many literature reports show a drastic decrease in the adsorbed amount already with pH increase (Chen et al, 2018; Kakavandi et al, 2014; Tytłak et al, 2015; Zhou et al, 2016), as observed in our case where at pH⁓6–7, a significant decrease in the amount of adsorbed chromium is observed.…”

Section: Resultsmentioning

confidence: 99%

Activated biochars derived from wood biomass liquefaction residues for effective removal of hazardous hexavalent chromium from aquatic environments

et al. 2021

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Residues obtained after wood biomass liquefaction were used as precursors for the synthesis of two activated biochars. The source of biomass liquefaction constituted of industrial wood processing by‐products, including bark and wood sawdust. The liquefied residues were analyzed in terms of chemical components and structure. Carbonization under nitrogen atmosphere followed by physical CO2 activation allowed to obtain microporous activated carbons with specific surface areas of 741 and 522 m2 g−1, and micropore volumes of 0.38 and 0.27 cm3 g−1, respectively. The obtained activated carbons were used to remove toxic hexavalent chromium from the aquatic environment. The observed sorption capacities were 80.6 mg g−1 versus 36.7 mg g−1 for wood bark‐derived and wood sawdust‐derived carbon, respectively, indicating a key role of the wood residue source in the effectiveness of Cr(VI) removal by resulting carbons. Despite the dominant microporous structure, the adsorption kinetics was surprisingly fast, especially for the bark‐derived carbon, since the adsorption equilibrium was reached within 2 h. The sorption mechanism of chromium was based on the carbon surface‐mediated reduction of toxic hexavalent form to its non‐toxic trivalent form, as confirmed by the X‐ray photoelectron analysis. Therefore, the residues from wood liquefaction can be easily converted into porous activated biocarbons capable of adsorbing significant amounts of hazardous Cr(VI) while reducing them to non‐toxic Cr(III).

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“…Chromates and dichromates are applied as pigments (e.g., chrome yellow PbCr) in manufacturing mineral paints used in ceramic, textile, plastic and paper industries and as paints [ 7 ]. Cr compounds are also used as corrosion inhibitors, as polymerization catalysts, as oxidizers in organic synthesis, as raw materials in perfume production and in making inks, as wood preservatives and as light-sensitive materials in photography [ 8 ]. Chromite (FeCr 2 ) is applied mainly in the production of fireproof materials (fireproof bricks and cement) [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Successful Outcome of Phytostabilization in Cr(VI) Contaminated Soils Amended with Alkalizing Additives

Radziemska

Bęś

Gusiatin

et al. 2020

IJERPH

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This study analysed the effect of three alkalizing soil amendments (limestone, dolomite chalcedonite) on aided phytostabilization with Festuca rubra L. depending on the hexavalent chromium (Cr(VI)) level in contaminated soil. Four different levels of Cr(VI) were added to the soil (0, 50, 100 and 150 mg/kg). The Cr contents in the plant roots and above-ground parts and the soil (total and extracted Cr by 0.01 M CaCl2) were determined with flame atomic absorption spectrometry. The phytotoxicity of the soil was also determined. Soil amended with chalcedonite significantly increased F. rubra biomass. Chalcedonite and limestone favored a considerable accumulation of Cr in the roots. The application of dolomite and limestone to soil contaminated with Cr(VI) contributed to a significant increase in pH values and was found to be the most effective in reducing total Cr and CaCl2-extracted Cr contents from the soil. F. rubra in combination with a chalcedonite amendment appears to be a promising solution for phytostabilization of Cr(VI)-contaminated areas. The use of this model can contribute to reducing human exposure to Cr(VI) and its associated health risks.

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Green environment suffers by discharging of high-chromium-containing wastewater from the tanneries at Hazaribagh, Bangladesh

Cited by 34 publications

References 11 publications

Assessment of Hexavalent Chromium Pollution in Buriganga and Dhaleshwari River Waterbodies Adjacent to Tannery Estates in Bangladesh

Assessment of Hexavalent Chromium Pollution in Buriganga and Dhaleshwari River Waterbodies Adjacent to Tannery Estates in Bangladesh

Activated biochars derived from wood biomass liquefaction residues for effective removal of hazardous hexavalent chromium from aquatic environments

Successful Outcome of Phytostabilization in Cr(VI) Contaminated Soils Amended with Alkalizing Additives

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