Sorption and desorption studies of chromium(VI) from nonviable cyanobacterium Nostoc muscorum biomass

被引：278

作者：

Gupta, V. K. ^{[1
]}

Rastogi, A. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Roorkee 247667, Uttar Pradesh, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 154卷 / 1-3期

关键词：

biosorption; Nostoc muscorum; chromium(VI); Langmuir model; kinetics; sorption-desorption;

D O I：

10.1016/j.jhazmat.2007.10.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This communication presents results pertaining to the sorptive and desorptive studies carried out on chromium(VI) removal onto nonviable freshwater cyanobacterium (Nostoc muscorum) biomass. Influence of varying the conditions for removal of chromium(VI), such as the pH of aqueous solution, the dosage of biosorbent, the contact time with the biosorbent, the temperature for the removal of chromium, the effect of light metal ions and the adsorption-desorption studies were investigated. Sorption interaction of chromium on to cyanobacterial species obeyed both the first and the second-order rate equation and the experimental data showed good fit with both the Langmuir and freundlich adsorption isotherm models. The maximum adsorption capacity was 22.92mg/g at 25 degrees C and pH 3.0. The adsorption process was endothermic and the values of thermodynamic parameters of the process were calculated. Various properties of the cyanobacterium, as adsorbent, explored in the characterization part were chemical composition of the adsorbent, surface area calculation by BET method and surface functionality by FTIR. Sorption-desorption of chromium into inorganic solutions and distilled water were observed and this indicated the biosorbent could be regenerated using 0.1 M HNO3 and EDTA with upto 80% recovery. The biosorbents were reused in five biosorption-desorption cycles without a significant loss in biosorption capacity. Thus, this study demonstrated that the cyanobacterial biomass N. muscorum could be used as an efficient biosorbent for the treatment of chromium(VI) bearing wastewater. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：347 / 354

页数：8

共 37 条

[1] Determination of the equilibrium, kinetic and thermodynamic parameters of the batch biosorption of nickel(II) ions onto Chlorella vulgaris [J].

Aksu, Z .

PROCESS BIOCHEMISTRY, 2002, 38 (01) :89-99

[2] Equilibrium modelling of individual and simultaneous biosorption of chromium(VI) and nickel(II) onto dried activated sludge [J].

Aksu, Z ;

Açikel, Ü ;

Kabasakal, E ;

Tezer, S .

WATER RESEARCH, 2002, 36 (12) :3063-3073

[3] DESORPTION OF CADMIUM FROM ALGAL BIOSORBENT [J].

ALDOR, I ;

FOUREST, E ;

VOLESKY, B .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1995, 73 (04) :516-522

[4]

AMORIM WB, 2003, BR J CHEM ENG, V20

[5] Biosorption of Cr(VI) by immobilized biomass of two indigenous strains of cyanobacteria isolated from metal contaminated soil [J].

Anjana, Kamra ;

Kaushik, Anubha ;

Kiran, Bala ;

Nisha, Rani .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 148 (1-2) :383-386

[6] Utilisation of native, heat and acid-treated microalgae Chlamydomonas reinhardtii preparations for biosorption of Cr(VI) ions [J].

Arica, MY ;

Tüzün, I ;

Yalçin, E ;

Ince, Ö ;

Bayramoglu, G .

PROCESS BIOCHEMISTRY, 2005, 40 (07) :2351-2358

[7] SOME ASPECTS OF THE SURFACE-CHEMISTRY OF CARBON-BLACKS AND OTHER CARBONS [J].

BOEHM, HP .

CARBON, 1994, 32 (05) :759-769

[8] Biosorption of Cr3+, Cd2+ and Cu2+ ions by blue-green algae Spirulina sp.:: kinetics, equilibrium and the mechanism of the process [J].

Chojnacka, K ;

Chojnacki, A ;

Górecka, H .

CHEMOSPHERE, 2005, 59 (01) :75-84

[9]

Cossich ES, 2002, ELECTRON J BIOTECHN, V5, P133

[10] Removal of chromium(VI) from saline wastewaters by Dunaliella species [J].

Dönmez, G ;

Aksu, Z .

PROCESS BIOCHEMISTRY, 2002, 38 (05) :751-762

← 1 2 3 4 →