Heavy metal biosorption sites in Aspergillus niger

Kapoor, Anoop; Viraraghavan, T.

doi:10.1016/s0960-8524(97)00055-2

Cited by 387 publications

(200 citation statements)

References 19 publications

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“…Methylation of amines (Kapoor and Viraraghavan, 1997) was carried out by treating 1 g of raw biosorbent with 20 mL of formaldehyde and 40 mL of formic acid. The mixture was agitated on a rotary shaker (IKA-KS 501, Germany) for 5 hrs at 150 rpm.…”

Section: Surface Chemistry Characterization Of Biosorbentmentioning

confidence: 99%

Lead biosorption onto waste beer yeast by-product, a means to decontaminate effluent generated from battery manufacturing industry

Parvathi

Nagendran

Nareshkumar

2007

Electron. J. Biotechnol.

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This paper projects the potential of waste beer yeast Saccharomyces cerevisiae in biosorbing lead from battery manufacturing industrial effluent. Experiments were carried out as a function of pH, biosorbent concentration, lead concentration and agitation speed. Specific lead uptake of 2.34 mg/g was recorded and the data gave good fits for Freundlich and Langmuir models with K f and Q max values of 0.5149 and 55.71 mg/g. The roles played by amines, carboxylic acids, phosphates, sulfhydryl group and lipids in lead biosorption were studied. Electrostatic attraction may be the mechanism of biosorption. The extent of contribution of the functional groups and lipids to lead biosorption was in the order: carboxylic acids > lipids > amines > phosphates. Blocking of sulfhydryl group did not have any significant effect on lead uptake.

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Section: Surface Chemistry Characterization Of Biosorbentmentioning

confidence: 99%

Lead biosorption onto waste beer yeast by-product, a means to decontaminate effluent generated from battery manufacturing industry

Parvathi

Nagendran

Nareshkumar

2007

Electron. J. Biotechnol.

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“…1). The stretching band at 1650 corresponds to amide I band -a CO stretching mode conjugated to NH deformation mode (18). The shifts of this band may correspond to the complexing of the carbonyl group by dative coordination to metals.…”

Section: Resultsmentioning

confidence: 99%

Uptake of free and complexed silver ions by different strains of Rhodotorula mucilaginosa

Gomes¹,

Rosa²,

Pimentel

et al. 2002

Braz. J. Microbiol.

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Five strains of Rhodotorula mucilaginosa were tested for the ability to accumulate free and complexed silver ions by metabolism-dependent and -independent processes. The ability to take up Ag + was observed in both live and dead biomass, whereas silver dicyanide [Ag (CN)2-] uptake was strictly glucose dependent. In contrast to Ag (CN)2-, glucose addition inhibited by 16 to 25% the Ag + uptake rate of living UFMG -Y02, Y27, and Y35 cells, while strains CBS 316 and UFMG-Y01 showed an improved uptake rate of about 115% and 13%, respectively. The Langmuir sorption model was used to evaluate the silver sorption capability of the R. mucilaginosa strains. The calculated qmax value suggested that R. mucilaginosa strains UFMG-Y27 had the highest loading capacity. The type strain CBS 316 had the lowest qmax but showed the highest affinity for silver ions. The results provided by the Fourier Transform Infra Red analysis (FTIR) suggest that C=O groups represent the main reactive site for silver uptake by the strain UFMG-Y27.

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“…The processing by formalin (formaldehyde) aims denaturation of proteins and amino blocking. The treatment was carried out by [17]. For this purpose 5 g of yeast diluted in 100 cm 3 of formaldehyde (HCHO), and then 200 cm 3 of formic acid (HCOOH).…”

Section: Methods Of Researchmentioning

confidence: 99%

Study of modification of magnetically labeled yeasts Saccharomyces cerevisiae for copper cations Cu2+ removal

Karpenko

2017

TAPR

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очищення сфлокульованого шламу до 99 % і зменшує вине-сення твердої фази з фугатом.ключові слова: модуль очищення шламів, полідисперсні шлами, деструкція флокул, міцність флокул, швидкість осі-дання, удосконалення центрифуги. Украина, Райко Валентина Федоровна, кандидат технических наук, профессор, кафедра химической техники и промышленной эколо-гии, Национальный технический университет «Харьковский по-литехнический институт», Украина,

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Heavy metal biosorption sites in Aspergillus niger

Cited by 387 publications

References 19 publications

Lead biosorption onto waste beer yeast by-product, a means to decontaminate effluent generated from battery manufacturing industry

Lead biosorption onto waste beer yeast by-product, a means to decontaminate effluent generated from battery manufacturing industry

Uptake of free and complexed silver ions by different strains of Rhodotorula mucilaginosa

Study of modification of magnetically labeled yeasts Saccharomyces cerevisiae for copper cations Cu2+ removal

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