1. Ilias M, Rafiqullah IM, Debnath BC, Mannan KS Bin, Hoq MM. Isolation and characterization
of chromium (VI)-reducing bacteria from tannery effluents. Indian J Microbiol. 2011;51:76–81.
2. Islam KMN, Misbahuzzaman K, Majumder AK, Chakrabarty M. Efficiency of different
coagulants combination for the treatment of tannery effluents: A case study of Bangladesh.
African J Environ Sci Technol. 2011;5:409–19.
3. Saha GC, Ali MA. Groundwater contamination in Dhaka City from tannery waste. J
Civ Eng. 2001;29:151–66.
4. Markiewicz B, Komorowicz I, Sajnóg A, Belter M, Barałkiewicz D. Chromium and its
speciation in water samples by HPLC/ICP-MS–technique establishing metrological traceability:
A review since 2000. Talanta. 2015;132:814–28.
5. Rosen BP. Transport and detoxification systems for transition metals, heavy metals
and metalloids in eukaryotic and prokaryotic microbes. Comp Biochem Physiol Part A
Mol Integr Physiol. 2002;133:689–93.
6. Hasan M, Hosain S, Asaduzzaman AM, Haque MA, Roy UK. Prevalence of Health Diseases
among Bangladeshi Tannery Workers and associated Risk factors with Workplace Investigation.
J Pollut Eff Control. 2016;:1–3.
7. Franco D V, Da Silva LM, Jardim WF. Reduction of hexavalent chromium in soil and
ground water using zero-valent iron under batch and semi-batch conditions. Water Air
Soil Pollut. 2009;197:49–60.
8. Ahluwalia SS, Goyal D. Microbial and plant derived biomass for removal of heavy
metals from wastewater. Bioresour Technol. 2007;98:2243–57.
9. Xu W, Duan G, Liu Y, Zeng G, Li X, Liang J, et al. Simultaneous removal of hexavalent
chromium and o-dichlorobenzene by isolated Serratia marcescens ZD-9. Biodegradation.
10. Liu Z, Wu Y, Lei C, Liu P, Gao M. Chromate reduction by a chromate-resistant bacterium,
Microbacterium sp. World J Microbiol Biotechnol. 2012;28:1585–92.
11. Thacker U, Parikh R, Shouche Y, Madamwar D. Reduction of chromate by cell-free
extract of Brucella sp. isolated from Cr(VI) contaminated sites. Bioresour Technol.
12. da Rocha Junior RB, Meira HM, Almeida DG, Rufino RD, Luna JM, Santos VA, et al.
Application of a low-cost biosurfactant in heavy metal remediation processes. Biodegradation.
13. Zouboulis AI, Loukidou MX, Matis KA. Biosorption of toxic metals from aqueous
solutions by bacteria strains isolated from metal-polluted soils. Process Biochem.
14. Zahoor A, Rehman A. Isolation of Cr(VI) reducing bacteria from industrial effluents
and their potential use in bioremediation of chromium containing wastewater. J Environ
15. Sun W, Xiao E, Krumins V, Häggblom MM, Dong Y, Pu Z, et al. Rhizosphere microbial
response to multiple metal (loid) s in different contaminated arable soils indicates
crop-specific metal-microbe interactions. Appl Environ Microbiol. 2018;84:e00701-18.
16. Watts MP, Khijniak T V, Boothman C, Lloyd JR. Treatment of alkaline Cr(VI) contaminated
leachate with an alkaliphilic metal-reducing bacterium. Appl Environ Microbiol. 2015;:AEM-00853.
17. Sturm G, Brunner S, Suvorova E, Dempwolff F, Reiner J, Graumann P, et al. Chromate
resistance mechanisms in Leucobacter chromiiresistens. Appl Environ Microbiol. 2018;84:e02208-18.
18. Francisco R, Alpoim MC, Morais P V. Diversity of chromium‐resistant and‐reducing
bacteria in a chromium‐contaminated activated sludge. J Appl Microbiol. 2002;92:837–43.
19. Megharaj M, Avudainayagam S, Naidu R. Toxicity of hexavalent chromium and its
reduction by bacteria isolated from soil contaminated with tannery waste. Curr Microbiol.
20. Campos VL, Moraga R, Yánez J, Zaror CA, Mondaca MA. Chromate reduction by Serratia
marcescens isolated from tannery effluent. Bull Environ Contam Toxicol. 2005;75:400–6.
21. Elangovan R, Abhipsa S, Rohit B, Ligy P, Chandraraj K. Reduction of Cr(VI) by
a Bacillus sp. Biotechnol Lett. 2006;28:247–52.
22. Viamajala S, Smith WA, Sani RK, Apel WA, Petersen JN, Neal AL, et al. Isolation
and characterization of Cr(VI) reducing Cellulomonas spp. from subsurface soils: Implications
for long-term chromate reduction. Bioresour Technol. 2007;98:612–22.
23. Camargo FAO, Bento FM, Okeke BC, Frankenberger WT. Chromate reduction by chromium-resistant
bacteria isolated from soils contaminated with dichromate. J Environ Qual. 2003;32:1228–33.
24. Yang J, He M, Wang G. Removal of toxic chromate using free and immobilized Cr(VI)-reducing
bacterial cells of Intrasporangium sp. Q5-1. World J Microbiol Biotechnol. 2009;25:1579–87.
25. Bopp LH, Chakrabarty AM, Ehrlich HL. Chromate resistance plasmid in Pseudomonas
fluorescens. J Bacteriol. 1983;155:1105–9.
26. Wang P-C, Mori T, Komori K, Sasatsu M, Toda K, Ohtake H. Isolation and characterization
of an Enterobacter cloacae strain that reduces hexavalent chromium under anaerobic
conditions. Appl Environ Microbiol. 1989;55:1665–9.
27. Shen H, Wang Y. Characterization of enzymatic reduction of hexavalent chromium
by Escherichia coli ATCC 33456. Appl Environ Microbiol. 1993;59:3771–7.
28. Nancharaiah Y V, Dodge C, Venugopalan VP, Narasimhan S V, Francis AJ. Immobilization
of Cr(VI) and its reduction to Cr (III) phosphate by granular biofilms comprising
a mixture of microbes. Appl Environ Microbiol. 2010;76:2433–8.
29. Monachese M, Burton JP, Reid G. Bioremediation and tolerance of humans to heavy
metals through microbial processes: a potential role for probiotics? Appl Environ
30. Camargo FAO, Okeke BC, Bento FM, Frankenberger WT. In vitro reduction of hexavalent
chromium by a cell-free extract of Bacillus sp. ES 29 stimulated by Cu 2+. Appl Microbiol
31. Shakoori AR, Makhdoom M, Haq RU. Hexavalent chromium reduction by a dichromate-resistant
gram-positive bacterium isolated from effluents of tanneries. Appl Microbiol Biotechnol.
32. Aravindhan R, Madhan B, Rao JR, Nair BU, Ramasami T. Bioaccumulation of chromium
from tannery wastewater: an approach for chrome recovery and reuse. Environ Sci Technol.
33. Dieter G. Formation of Cr(VI) traces in chrome-tanned leather: causes, prevention
& latest findings. J Am Leather Chem Asoc. 2001;96:169–79.
34. Font J. Influence of various factors on Chromium (VI) formation by photo aging.
J Soc Leather Technol Chem. 1999;83:300–6.
35. Ali H, Khan E, Sajad MA. Phytoremediation of heavy metals—concepts and applications.
36. Carlos FS, Giovanella P, Bavaresco J, de Souza Borges C, de Oliveira Camargo FA.
A comparison of microbial bioaugmentation and biostimulation for hexavalent chromium
removal from wastewater. Water, Air, Soil Pollut. 2016;227:175.
37. Sharma S, Adholeya A. Hexavalent chromium reduction in tannery effluent by bacterial
species isolated from tannery effluent contaminated soil. J Environ Sci Technol. 2012;5:142–54.
38. Abou-Shanab RAI, Van Berkum P, Angle JS. Heavy metal resistance and genotypic
analysis of metal resistance genes in gram-positive and gram-negative bacteria present
in Ni-rich serpentine soil and in the rhizosphere of Alyssum murale. Chemosphere.
39. Wang Y-T, Xiao C. Factors affecting hexavalent chromium reduction in pure cultures
of bacteria. Water Res. 1995;29:2467–74.
40. Ozdemir G, Ozturk T, Ceyhan N, Isler R, Cosar T. Heavy metal biosorption by biomass
of Ochrobactrum anthropi producing exopolysaccharide in activated sludge. Bioresour
41. Gupta VK, Shrivastava AK, Jain N. Biosorption of chromium (VI) from aqueous solutions
by green algae Spirogyra species. Water Res. 2001;35:4079–85.
42. Saha B, Orvig C. Biosorbents for hexavalent chromium elimination from industrial
and municipal effluents. Coord Chem Rev. 2010;254:2959–72.
43. Ozdemir G, Ceyhan N, Ozturk T, Akirmak F, Cosar T. Biosorption of chromium (VI),
cadmium (II) and copper (II) by Pantoea sp. TEM18. Chem Eng J. 2004;102:249–53.
44. Dadrasnia A, Chuan Wei KS, Shahsavari N, Azirun MS, Ismail S. Biosorption potential
of Bacillus salmalaya strain 139SI for removal of Cr(VI) from aqueous solution. Int
J Environ Res Public Health. 2015;12:15321–38.
45. Dada AO, Olalekan AP, Olatunya AM, Dada O. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich
isotherms studies of equilibrium sorption of Zn2+ unto phosphoric acid modified rice
husk. IOSR J Appl Chem. 2012;3:38–45.
46. Bishnoi NR, Dua A, Gupta VK, Sawhney SK. Effect of chromium on seed germination,
seedling growth and yield of peas. Agric Ecosyst Environ. 1993;47:47–57.
47. Apha A. WPCF, Standard methods for the examination of water and wastewater. Am
Public Heal Assoc Washington, DC. 1995.
48. Yadav A, Raj A, Bharagava RN. Detection and characterization of a multidrug and
multi-metal resistant Enterobacterium Pantoea sp. from tannery wastewater after secondary
treatment process. Int J Plant Env. 2016;1:37–41.
49. Patel JB. Performance standards for antimicrobial susceptibility testing. Clinical
and Laboratory Standards Institute; 2017.
50. Li H, Lin Y, Guan W, Chang J, Xu L, Guo J, et al. Biosorption of Zn (II) by live
and dead cells of Streptomyces ciscaucasicus strain CCNWHX 72-14. J Hazard Mater.
51. Khodaverdiloo H, Samadi A. Batch equilibrium study on sorption, desorption, and
immobilisation of cadmium in some semi-arid zone soils as affected by soil properties.
Soil Res. 2011;49:444–54.
52. Vanderborght BM, Van Grieken RE. Enrichment of trace metals in water by adsorption
on activated carbon. Anal Chem. 1977;49:311–6.
53. Hokkanen S, Bhatnagar A, Repo E, Lou S, Sillanpää M. Calcium hydroxyapatite microfibrillated
cellulose composite as a potential adsorbent for the removal of Cr(VI) from aqueous
solution. Chem Eng J. 2016;283:445–52.
54. Voudrias E, Fytianos K, Bozani E. Sorption–desorption isotherms of dyes from aqueous
solutions and wastewaters with different sorbent materials. Glob Nest Int J. 2002;4:75–83.
55. Mohan SV, Karthikeyan J. Removal of lignin and tannin colour from aqueous solution
by adsorption onto activated charcoal. Environ Pollut. 1997;97:183–7.
56. Goldberg S. Equations and models describing adsorption processes in soils. Chem
Process soils. 2005; chemicalprocess:489–517.