Simultaneous removal of Cr(VI) and phenol from binary solution using Bacillus sp. immobilized onto tea waste biomass

Gupta, Ankur; Balomajumder, Chandrajit

doi:10.1016/j.jwpe.2015.02.004

Cited by 60 publications

(25 citation statements)

References 44 publications

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“…A soluble sugar and dirt present in tea waste biomass was removed by boiling in distilled water about for 30 min. After boiling, tea waste biomass was washed with distilled water in triplicate and then dried in hot air oven at 50°C for 12 h. Furthermore, the dried biomass was sieved to the desired particle size 0.5-2 mm (Gupta and Balomajumder 2015). 5 g of tea waste biomass was added to 50 mL solution of 2 M FeSO 4 Á7H 2 O in 500 mL conical flask.…”

Section: Preparation Of Biosorbentmentioning

confidence: 99%

“…To avoid photo-oxidation of phenol, stock solution was stored in brown glass bottle (Chaudhary and Balomajumder 2014). Based on industrial wastewater such as tannery and electroplating, 2:1 ratio of Cr(VI) and phenol were taken for conducting the present experiments, because these components are generally present in the wastewater in this composition (Aksu and Akpinar 2001;Gupta and Balomajumder 2015).…”

Section: Preparation Of Solutionsmentioning

confidence: 99%

“…Cr(VI) and its copollutants such as phenol, naphthalene, and trichloroethylene discharge from these industries contaminate ground water aquifers, lake, river sediments, and soil (YenHui et al 2009). Much research has been carried out on the adsorption of a single pollutant nevertheless the fact that organic pollutants also exist with multiple metallic species (Repo et al 2011;Gupta and Balomajumder 2015); therefore, in the recent year, simultaneous removal of heavy metals and organic compounds has gained a great attention in wastewater treatment processes (Mani et al 2015). Adsorption of pollutant using commercial granular activated carbon is conventional method, but due to its high cost, this method is not economical .…”

Section: Introductionmentioning

confidence: 99%

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Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Gupta

Balomajumder

2017

Appl Water Sci

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In this study, simultaneous removal of Cr(VI) and phenol from binary solution was carried out using Fetreated tea waste biomass. The effect of process parameters such as adsorbent dose, pH, initial concentration of Cr(VI) (mg/L), and initial concentration of phenol (mg/L) was optimized. The analysis of variance of the quadratic model demonstrates that the experimental results are in good agreement with the predicted values. Based on experimental design at an initial concentration of 55 mg/L of Cr(VI), 27.50 mg/L of phenol, pH 2.0, 15 g/L adsorbent dose, 99.99% removal of Cr(VI), and phenol was achieved.

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Section: Preparation Of Biosorbentmentioning

confidence: 99%

Section: Preparation Of Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Gupta

Balomajumder

2017

Appl Water Sci

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“…Cr(III) is not as mobile or as soluble as Cr(VI) across cellular membranes therefore, it is less likely to be passively taken by B. subtilis by biosorption; thus, unlikely to occur in this investigation [9,33,34]. This does not conclude Cr(III) cannot be removed by bacterial interaction, as it has been recorded that B. subtilis in consortium with Bacillus cereus, was able to remove up to 98% of Cr(III) present in a tannery effluent by adsorption onto the biofilm in a continuous flow reactor [17].…”

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confidence: 94%

Biosurfactant Production and Biodegradation of Leather Dust from Tannery

Greenwell¹,

Sarker²,

Rahman³

2016

TOBIOTJ

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Background:The leather industry contributes vast amounts of pollution damaging to aquatic and terrestrial environments. Leather dust is a chromium-contaminated waste produced from the shaving and buffering processes involved in leather tanning. Microorganisms have been investigated for their usefulness in bioremediation and recycling of waste materials. Solid leather waste is the current focus of material to be remediated in this study. Objective:The present work focuses on the development of a process to degrade the leather dust protein with the aim of removing the chromium bound within the protein. As part of the study, detecting the presence of biosurfactant production was performed to fuel further interest in value-added by-products of the process. Method:Bacillus subtilis SA-6 was used to treat the leather dust over a 10 day shake flask study. Daily samples were taken and analysed for chromium content by Atomic Absorption Spectrometry. The surface tension of the shake flask cultures was also investigated to detect for any valuable by-products such as biosurfactants for future prospects of developing an economically viable process. Results:Chromium concentration demonstrated an exponential increase between 0-120 h in shake flask experiments. In the presence of B. subtilis SA-6 chromium concentration in cell free supernatant increased from 0.13±0.09 mg/L to 190.81±20.18 mg/L compared to when B. subtilis SA-6 was absent. Surface tension decreased during fermentation from 53.23±0.92 mN/m to 30.13±0.15 mN/m in 24 h. Conclusion:This study demonstrates a waste management process, which detoxifies solid tannery waste to reduce environmental pollution, whilst yielding value-added products (such as biosurfactant) to provide an economically viable bioprocess with potential for large-scale development.

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“…Bacillus sp. and Escherichia coli were stored at 4 o C in nutrient agar medium (Beef extract 1.0 g, yeast extract 2.0 g, peptone 5.0 g, NaCl 5.0 g, Agar 15 g in 1 L of distilled water) [29]. The acclimatization of Escherichia coli and Bacillus sp.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of Cr(VI) and phenol from synthetic binary solution using consortium culture of Bacillus sp. and E. coli immobilized on tea waste biomass in packed bed reactor

Gupta

Balomajumder

2015

Korean J. Chem. Eng.

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A continuous bio column reactor was designed for the simultaneous bioaccumulation of Cr(VI) and biodegradation of phenol from their binary synthetic solution with the ratio of (2 : 1). Consortium culture of Bacillus sp. and Escherichia coli was immobilized onto tea waste biomass in the packed bed column. The metabolites formed during the biodegradation of phenol by Bacillus sp. were utilized by Escherichia coli for the bioaccumulation of Cr(VI). The considerable effect of empty bed contact time (EBCT), bed height (cm) and flow rate (mL/min) was investigated onto the simultaneous removal of Cr(VI) and phenol in the column reactor. However, after 3-4 days of continuous treatment of Cr(VI) and phenol the effect of these process parameters was not significant. Dissolved oxygen (DO) of effluent has been found to decrease with run time of packed bed column. The pH of the effluent decreased initially for 2 days but after that it became the same as the influent. A mass transfer study was carried out to calculate the pseudofirst-order rate constant for Cr(VI) and phenol, which was in good agreement with experimental results.

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Simultaneous removal of Cr(VI) and phenol from binary solution using Bacillus sp. immobilized onto tea waste biomass

Cited by 60 publications

References 44 publications

Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Biosurfactant Production and Biodegradation of Leather Dust from Tannery

Simultaneous removal of Cr(VI) and phenol from synthetic binary solution using consortium culture of Bacillus sp. and E. coli immobilized on tea waste biomass in packed bed reactor

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