Chromium(VI) Reducing Native Microorganisms for Remediation of Chromium Eco-toxicity in Environment of Bangladesh

Rafiqullah, Iftekhar; Hossain, Anowar; Ilias, Mohammad; Hoq, Md. Enamul

doi:10.3329/bjsir.v43i4.2236

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…Bacterial cells might initially need to adjust to the chromium toxicity before initiating its reduction reaction until the growth was increased to reduce chromium with more efficiency. Similar observation was reported by Rafiqullqh et al, who showed that chromium tolerant Staphylococcus aureus and Pediococcus pentosaceus, reduced 100% hexavalent chromium within 24 hours 21 .…”

Section: Discussionsupporting

confidence: 89%

Chromium bioremediation potential of indigenous Bacillus pumillus isolated from river water of Bangladesh

Ahmed

Hasan

Khan

et al. 2021

Bangla. J. Microbiol.

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Bangladesh has achieved rapid industrialization in recent years. However, many of these industries lack proper effluent treatment plant and discharge untreated effluent laden with different heavy metals into the major rives that surround these industries, affecting the environment as well as human and animal health. Aiming to develop a sustainable effluent treatment plant, a heavy metal tolerant Bacillus pumillus isolated from polluted river water of Bangladesh was studied for its chromium bioremediation potential. Reduction of hexavalent chromium using the Sdiphenylcarbazide (DPC) method showed that whole cells of the Bacillus pumillus reduced 89.5%, 75%, 73% and 45% of 1.0, 2.5, 5 and 10mg/L Cr(VI) to Cr(III), respectively. This bacterium reduced 100% of 20mg/L Cr(VI) to Cr(III) within 8 hours, in a growth associated pattern. A 20kb plasmid was detected in this Bacillus pumillus, and loss of this plasmid did not cause complete impairment of chromium tolerance capacity, though the tolerance efficiency was reduced. The Bacillus pumillus studied in the current study therefore shows its potential to develop a sustainable chromium bioremediation method. Bangladesh J Microbiol, Volume 38, Number 1, June 2021, pp 27-30

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Section: Discussionsupporting

confidence: 89%

Chromium bioremediation potential of indigenous Bacillus pumillus isolated from river water of Bangladesh

Ahmed

Hasan

Khan

et al. 2021

Bangla. J. Microbiol.

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“…Due to its high oxidation potential, it can easily penetrate biological membranes and cause health hazards (Chaudhary et al 2003). Feeds and fertilizer production from tanned skin-cut wastes (SCW) is the most direct phenomenon of chromium ecotoxicity leading to food chain contamination in Bangladesh (Rafiqullah et al 2008). The SCW is protein-rich and indiscriminately used to produce poultry and fish feeds, and organic fertilizer.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Chromate Resistant and Reducing Bacteria from Tannery Effluent of Chittagong, Bangladesh

et al. 1970

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Context: Waste water containing Chromium (Cr 6+ ) is by far the most important environmental challenge being faced. Objectives:The present study was planned on the isolation and characterization of chromate resistant and reducing bacterial strains in order to use them for detoxification of chromate. Materials and Methods:Water samples were collected to isolate microorganisms from tannery effluent of Baluchara, Chittagong and inoculated into Luria-Bertani medium with added Cr 6+ as K2Cr2O7. The organisms have been identified and studied for Cr 6+ reduction-ability in growth dependent manner.Results: A total of 35 isolates have been selected as potential organism belonging to the species of Moraxella (14.3%), Bacillus (11.43%), Streptococcus (25.72%), Staphylococcus (5.7%), Salmonella (12.3%), E. coli (13.3%), Enterobacter (11.3%), Hafnia alvei (2.45%) and Alcaligenes (3.5%). The selected isolates were able to tolerate at least 500 mg/l of Cr 6+ . The total Cr 6+ concentration of the effluent sample analysed was found to be about 23.73 mg/l as determined by Atomic Absorption Spectrophotometry. Two of the isolates reduced 38% and 32% of Cr 6+ added to the medium. Another 7 isolates showed Cr 6+ reducing capability ranging from 18 to 22%. Conclusion:As the isolates have turned out to successfully reduce Cr 6+ in this study, these can be used for the development of bioremediation process.

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“…It causes health hazards since it can easily enter biological cell membranes (Ogale et al, 2003). Tanned skin-cut wastes (SCW) which are used to produce feeds and fertilizers, are the direct phenomenon of chromium toxicity (Rafiqullah et al, 2008).…”

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confidence: 99%

Isolation and Characterization of Escherichia coli from Tannery Wastewater with Special Reference to Chromium

Siddiqi¹,

Qaiser

Iqbal

et al. 2017

LGUJLS

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With the progress of industries, environmental pollution with toxic heavy metals is spreading throughout the world. Technologies related to microbes may provide an alternative or addition to predictable method for the removal of these heavy metals. The present investigation deals with isolation anddescription of chromium resistant bacteria from tannery wastewater taken from industrial area of Lahore, Pakistan. Firstly the leather industry effluent was examined for the total bacterial count and the presence of lactose fermenter and non lactose fermenter species on nutrient agar and MacConkey agar. Nutrient agar showed different colonies which were than identified by gram staining and colonies on MacConkey agar were identified by their colors as pink colonies show lactose fermenting species and off white or transparent colonies show presence of non lactose fermenting species. Potential heavy metal tolerant Escherichia coli was isolated by using Eosin methylene blue (EMB) agar medium supplemented with salts of chromium. The examination of morphological features of the obtained colonies authentically identified the isolate as Escherichia coli. The identified isolate was then exposed to different concentrations of chromium chloride to conclude the minimum inhibitory concentration (MIC) which was found out to be 160mg/mL.

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Chromium(VI) Reducing Native Microorganisms for Remediation of Chromium Eco-toxicity in Environment of Bangladesh

Cited by 7 publications

References 8 publications

Chromium bioremediation potential of indigenous Bacillus pumillus isolated from river water of Bangladesh

Chromium bioremediation potential of indigenous Bacillus pumillus isolated from river water of Bangladesh

Isolation and Characterization of Chromate Resistant and Reducing Bacteria from Tannery Effluent of Chittagong, Bangladesh

Isolation and Characterization of Escherichia coli from Tannery Wastewater with Special Reference to Chromium

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