Biosorption of Cu (II) using free and immobilized biomass of Penicillium citrinum

Verma, Anamika; Shalu, .; Singh, Anita; Bishnoi, Narsi R.; Gupta, Asha

doi:10.1016/j.ecoleng.2013.10.008

Cited by 68 publications

(34 citation statements)

References 30 publications

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“…In the studies of Verma et al, Penicillium citrinum biomass, isolated from copper polluted sites, was easy cultivated and immobilized in calcium alginate and was used as a biosorbent for Cu(II) removal from model aqueous solutions. The maximum biosorption capacity for the immobilized biomass was 25 mg/g, and 22.7 mg/g for the free biomass at an initial concentration of copper ions of 20 to 90 mg/L [72].…”

Section: Immobilized Fungus Biosorbentsmentioning

confidence: 95%

“…The maximum biosorption capacity for the immobilized biomass was 25 mg/g, and 22.7 mg/g for the free biomass at an initial concentration of copper ions of 20 to 90 mg/L [72]. The maximum biosorption capacity for the immobilized biomass was 25 mg/g, and 22.7 mg/g for the free biomass at an initial concentration of copper ions of 20 to 90 mg/L [72].…”

Section: Immobilized Fungus Biosorbentsmentioning

confidence: 96%

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Immobilized microbial biosorbents for heavy metals removal

Velkova

Kirova

Stoytcheva

et al. 2018

Engineering in Life Sciences

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Intensive industrial and urban growth has led to the release of increasing amounts of environmental pollutants. Contamination by metals, in particular, deserves special attention due to their toxicity and potential to bioaccumulate via the food chain. Conventional techniques for the removal of toxic metals, radionuclides and precious metals from wastewater all have a number of drawbacks, such as incomplete metal extraction, high cost and risk of generating hazardous by‐products. Biosorption is a cost‐effective and environment‐friendly technology, an alternative to conventional wastewater treatment methods. Biosorption is a metabolically independent process, in which dead microbial biomass is capable of removal and concentrating metal ions from aqueous solutions. Free microbial biosorbents are of small size and low density, insufficient mechanical stability and low elasticity, which causes problems with metal ion desorption, separation of the sorbent from the medium and its regeneration. Hence, the possibilities for the implementation of continuous biosorbent processes for metal removal in flow‐type reactor systems are reduced and the practical application of biosorption in industrial conditions is limited. By immobilizing microbial biomass on suitable carriers the disadvantages of free biosorbents are eliminated and more opportunities for practical use of biosorption become available. This review examines different immobilization techniques and carriers, certain basic features and possibilities of using immobilized microbial biosorbents for the removal and concentration of metals from aqueous solutions.

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Section: Immobilized Fungus Biosorbentsmentioning

confidence: 95%

Section: Immobilized Fungus Biosorbentsmentioning

confidence: 96%

Immobilized microbial biosorbents for heavy metals removal

Velkova

Kirova

Stoytcheva

et al. 2018

Engineering in Life Sciences

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“…Various literatures on biosorption of different metals utilizing H. verticillata as biosorbent suggest that these aquatic plants possess hydroxyl groups in their cellulosic matrix (Huang et al 2010;Li et al 2013;Naveen et al 2011). Modification or pre-treatment of biosorbent using Fenton's reagent technique can be used to oxidize these hydroxyl groups of cellulose into carboxyl groups by creating a weak cationic ion exchanger (Shukla and Pai 2005), which ultimately could enhance the metal removal efficiency up to many folds as compared to the other previous research studies (Nasernejad et al 2005;Kumar et al 2007;Li et al 2007;Singh et al 2007;King et al 2008;Mohammadi et al 2010;Liang et al 2011;Momcilovic et al 2011;Tay et al 2011;Zhang 2011;Verma et al 2013;Kumar 2014;Tasar et al 2014) without imposing much burden on the economy. Furthermore, the use of Fenton modified dried biomass of H. verticillata (FMDBH) for the removal of metal ions from aqueous solution and their application for treating wastewater does not exist.…”

Section: Introductionmentioning

confidence: 91%

Enhanced biosorption of metal ions from wastewater by Fenton modified Hydrilla verticillata dried biomass

Mishra

Tripathi

Kumar

2014

Int. J. Environ. Sci. Technol.

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Present study deals with the biosorption of metal ions (Cu 2? , Zn 2? , Pb 2? , and Cd 2? ) from aqueous solutions as well as from wastewater using Fenton modified Hydrilla verticillata dried biomass. Fenton modification process was optimized by varying different parameters such as pH, temperature, contact time, and Fe 2? /H 2 O 2 ratio. The modified biosorbent was characterized by using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and Malvern particle size analyzer. Energy-dispersive X-ray spectroscopy analysis revealed the enhancement in weight percent of Cu 2? (47.53 %), Zn 2? (41.82 %), Pb 2?(43.76 %), and Cd 2? (43.15 %) ions on the surface of modified biosorbent after the biosorption process. The experimental data obtained from the batch study were modeled using Langmuir and Freundlich isotherm models. Experimental data showed best fitting to Freundlich isotherm model. The increase in biosorption capacity after the Fenton modification was observed, which follows the sequence:[ Zn 2? . The biosorption process followed the pseudo-second-order kinetics, suggesting that the chemisorption may be the rate-limiting step in this study. The thermodynamic study revealed that the biosorption process was spontaneous and exothermic in nature. The biosorption capacity for multi-metal solution was found to be relatively lower than the single-metal solution. Performance of batch reactor in treating wastewater showed significant increase in removal efficiency of Cu (from 71 to 89 %) ions after the modification of biosorbent as compared to raw biomass.

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“…Biosorption has emerged as a promising and eco-friendly technology for the removal of metal ions from aqueous environment owing to the ease of handling, low cost, high efficiency, minimization of chemical and biological sludge, no additional nutrient requirement, regeneration of biosorbent and possibility of metal recovery (Gorgievski et al, 2013;Ullah et al, 2013;Mishra et al, 2014;Coelho et al, 2014;Das et al, 2014b;Bozic et al, 2013;Zuo et al, 2012;Hanif et al, 2009;Dhir and Srivastava, 2011;Verma et al, 2013). In recent years, various plant gum viz.…”

Section: Introductionmentioning

confidence: 99%