Removal of heavy metals by adsorption on Pleurotus ostreatus

Javaid, Amna; Bajwa, Rukhsana; Shafique, Umer; Anwar, Jamil

doi:10.1016/j.biombioe.2010.12.035

Cited by 153 publications

(70 citation statements)

References 46 publications

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“…(2): (2) ...where C 0 is the initial heavy metal concentration, C e is the concentration of heavy metal at equilibrium (mg/L), m is the mass of adsorbent (mg), and V is the solution volume (L). The Langmuir isotherm model assumes the existence of the homogeneous monolayer surface adsorption on which one ion per binding site was formed without side interactions between the adsorbed ions [14].…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…(6), logK f is the intercept of the line when C e =1 mg/L, 1/n is the gradient assuming a linear relationship. The value n>1 associates with the distribution of bonded ions on the sorbent surface, which points a constant partitioning of the sorption mechanism out, where the adsorbate penetrated the sorbent and represents good adsorption [14,15].…”

Section: Adsorption Isothermmentioning

confidence: 99%

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Adsorption of Copper, Zinc, and Nickel Using Loess as Adsorbents

Punrattanasin¹,

Sariem²

2015

Pol. J. Environ. Stud.

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Section: Adsorption Isothermmentioning

confidence: 99%

Section: Adsorption Isothermmentioning

confidence: 99%

Adsorption of Copper, Zinc, and Nickel Using Loess as Adsorbents

Punrattanasin¹,

Sariem²

2015

Pol. J. Environ. Stud.

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“…The basidiomycete removed less than 10% of the Cr (VI) and could only reduce BOD by less than 20% ( Table 1). This suggests that the capacity of G. sepiarium, a brown-rot fungus, to adsorb or remove Cr (VI) is limited although research reports indicate that some basidiomycetes like the white-rot Pleurotus species can remove substantial concentrations of Cr (VI) from waste water [22] [23]. The dead mycelia were unable to remove Cr (VI) or reduce BOD in tannery effluent to the extent that the live mycelia did ( Table 1).…”

Section: Resultsmentioning

confidence: 99%

Removal of Cr (VI) from Tannery Effluent and Aqueous Solution by Sequential Treatment with Microfungi and Basidiomycete-Degraded Sawdust

Ejechi¹,

Akpomie²

2016

JEP

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Removal of Cr (VI) from aqueous solution and tannery effluent in sequence with Cr (VI) resistant microfungi (Aspergillus niger, Penicillium chrysogenum) and sawdust degraded by basidiomycete (Gloeophyllum sepiarium) was investigated in the laboratory. Initial or primary treatment with microfungi reduced 200 mg/l Cr (VI) in aqueous solution by 64.6% -78.2% while a markedly lower 0.52 mg/l Cr (VI) in tannery effluent was reduced by 72.4% -84.6%. However, the residual Cr (VI) in both aqueous solution and tannery effluent was reduced to a non-detectable level after secondary treatment by passage through basidiomycete-degraded sawdust column. The recovery of 65.4% -87.7% of the Cr (VI) removed by treatment microfungi by elution indicated adsorption as the major mechanism for Cr (VI) removal. The microfungi reduced BOD in tannery effluent by 85.3 ± 5.6 -92.7 ± 6.8 and concomitantly removed Cr (VI), hence it is hypothesized that non-Cr (VI) constituents of tannery effluent may have interfered with biosorption of Cr (VI) by treatment microfungi. It is concluded that the two-stage sequential treatment process may be of potential cost-saving stratagem for removal of chromium from industrial wastes.

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“…With the current awareness of heavy metals as very toxic contaminants there have been many studies considering adsorption by solid surfaces as the most important mechanism for controlling metal content in soil solution and natural waters (Echeverria, Morera, Mazkiaran, & Garido, 1998;Bradl, 2004;Appel, Ma, Rhue, & Reve 2008;Javaid, Bajwa, Shafique, & Anwar, 2011). The most important chemical processes affecting the behavior and bioavailability of heavy metals in soils are those concerned with sorption mechanisms of metals from liquid phase onto solid phase (Rybicka, Calmano, & Breeger, 1995;Covelo, Andrade, & Vega, 2004).…”

Section: Introductionmentioning

confidence: 99%

Sorption of Heavy Metals by Ferralic-Arenosol and Vertic-Luvisol: A Comparative Isothermal Study

Mosekiemang¹,

Dikinya²,

Toteng³

2014

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Modeling of sorption data is essential for characterizing retention of heavy metals by the soil matrices as well as to predict the fate of heavy metals in the environment. We carried out a study to evaluate adsorption characteristics of metallic ions (Cr 3+ , Pb 2+ and Cu 2+ ) as sole sorbates as well as in coexistence onto clay extracts of Vertic-Luvisol and Ferralic-Arenosol, the generally under-researched yet wide-spread semi-arid soils. Additionally, sorption kinetics of these heavy metals was evaluated in these soils. Equilibrium sorption data for both non-competitive and competitive metal systems were found to obey the Langmuir isotherm. Overall metal loading capacity was higher in Vertic-Luvisol than Ferralic-Arenosol whereas metal-wise affinity to binding sites favoured sorption of Cr 3+ over Pb 2+ and Cu 2+ in that order. Contrary to the hypothesis of this study, the preferential sorption process was found to be driven by cationic properties as opposed to soil properties. Adsorption of metallic ions onto soils was significantly reduced in competitive systems than non-competitive systems, a phenomenon attributable to the antagonistic effects of coexisting species. Cr 3+ suppressed sorption of Pb 2+ and Cu 2+ on both soils as validated by the competitive adsorption capacity ratios which were < 1 in all instances where Cr 3+ coexisted with either one of Pb 2+ or Cu 2+ . The adsorption kinetics of metal ions in both soils followed the pseudo-second-order rate law, suggesting chemical sorption as the rate-limiting step of the adsorption process.

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Removal of heavy metals by adsorption on Pleurotus ostreatus

Cited by 153 publications

References 46 publications

Adsorption of Copper, Zinc, and Nickel Using Loess as Adsorbents

Adsorption of Copper, Zinc, and Nickel Using Loess as Adsorbents

Removal of Cr (VI) from Tannery Effluent and Aqueous Solution by Sequential Treatment with Microfungi and Basidiomycete-Degraded Sawdust

Sorption of Heavy Metals by Ferralic-Arenosol and Vertic-Luvisol: A Comparative Isothermal Study

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