Biosorption characteristics of Aspergillus flavus biomass for removal of Pb(II) and Cu(II) ions from an aqueous solution

Akar, Tamer; Tunalı, Sibel

doi:10.1016/j.biortech.2005.09.009

Cited by 212 publications

(78 citation statements)

References 27 publications

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“…The highest uptake of Cr (0.55 mg/g) by Trichoderma longibrachiatum indicated its efficiency to remove Cr from aqueous solution containing higher concentration of Cr. These results with respect to uptake of Cr by fungi are in agreement with those reported earlier [25][26][27][28].…”

Section: Growth and Uptake Of Cr By Fungal Isolatessupporting

confidence: 93%

Bioremediation of Heavy Metals in Liquid Media Through Fungi Isolated from Contaminated Sources

et al. 2011

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Wastewater particularly from electroplating, paint, leather, metal and tanning industries contain enormous amount of heavy metals. Microorganisms including fungi have been reported to exclude heavy metals from wastewater through bioaccumulation and biosorption at low cost and in eco-friendly way. An attempt was, therefore, made to isolate fungi from sites contaminated with heavy metals for higher tolerance and removal of heavy metals from wastewater. Seventy-six fungal isolates tolerant to heavy metals like Pb, Cd, Cr and Ni were isolated from sewage, sludge and industrial effluents containing heavy metals. Four fungi (Phanerochaete chrysosporium, Aspegillus awamori, Aspergillus flavus, Trichoderma viride) also were included in this study. The majority of the fungal isolates were able to tolerate up to 400 ppm concentration of Pb, Cd, Cr and Ni. The most heavy metal tolerant fungi were studied for removal of heavy metals from liquid media at 50 ppm concentration. Results indicated removal of substantial amount of heavy metals by some of the fungi. With respect to Pb, Cd, Cr and Ni, maximum uptake of 59.67, 16.25, 0.55, and 0.55 mg/g was observed by fungi Pb3 (Aspergillus terreus), Trichoderma viride, Cr8 (Trichoderma longibrachiatum), and isolate Ni27 (A. niger) respectively. This indicated the potential of these fungi as biosorbent for removal of heavy metals from wastewater and industrial effluents containing higher concentration of heavy metals.

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Section: Growth and Uptake Of Cr By Fungal Isolatessupporting

confidence: 93%

Bioremediation of Heavy Metals in Liquid Media Through Fungi Isolated from Contaminated Sources

et al. 2011

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“…The data fit well into both the isotherms. These Freundlich and Langmuir parameters compare well with those of other adsorbents that have been reported (Akar and Tunali 2006) The values of the parameters show that PPBM is a good adsorbent for the uptake of Cd(II) from aqueous solution. The Langmuir expression is valid for monolayer adsorption onto a surface with finite number of identical sites (homogenous) without any interaction between adsorbed ions.…”

Section: Equilibrium Modelingsupporting

confidence: 81%

“…It is one of the metals with the greatest potential hazard (Akar and Tunali 2006). Cadmium enters in the water bodies through wastes generated from industrial processes such as casting of various cadmium alloy products, coating telephone cables, ceramics, metal electroplating, plastic manufacturing, metallurgical processes, industries of pigments and Cd/Ni batteries (Volesky 1992;Cheremisinoff 1995).…”

Section: Introductionmentioning

confidence: 99%

Application of dried plant biomass as novel low-cost adsorbent for removal of cadmium from aqueous solution

Dubey¹,

Mishra²,

Singhal³

2013

Int. J. Environ. Sci. Technol.

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Heavy metals are a threat to human health and ecosystem. These days, great deal of attention is being given to green technologies for purification of water contaminated with heavy metal ions. Biosorption is one among such emerging technologies, which utilizes naturally occurring waste materials to sequester heavy metals from wastewater. Cadmium has hazardous impact on living beings; therefore, its removal through green and economical process is an important task. The aim of the present study was to utilize the locally available Portulaca oleracea plant biomass as an adsorbent for cadmium removal from aqueous solution. The biomass was obtained after drying and grinding the portulaca leaves and stem. No chemical treatment was done on the adsorbent so that it remained green in a true sense. Batch experiments were performed at room temperature. The critical parameters studied were effects of pH, contact time, initial metal ion concentration and adsorbent dose on the adsorption of cadmium. The maximum adsorption was found to be 72 %. The kinetic data were found to best fit the pseudo-secondorder equation. High adsorption rates were obtained in the initial 45 min, and adsorption equilibrium was then gradually achieved in about 100 min. Adsorption increased with increase in pH for a range 2 and 6. The equilibrium adsorption results closely followed both the Langmuir and Freundlich isotherms. The values of constants were calculated from isotherms. Results indicated that portulaca plant biomass could be developed as a potential material to be used in green water treatment devices for removal of metal ions.

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“…Diferentes materiais biológicos vêm sendo empregados visando a biossorção de metais tóxicos presentes em efluentes, tais como biomassas de algas, [22][23][24] fungos, 25,26 leveduras, 27,9 bactérias, 28,29 e macrófitas aquáticas. 20,30 As algas podem ser utilizadas no tratamento de águas residuais, desintoxicação biológica e controle de metais tóxicos em águas naturais ou em águas contaminadas industrialmente, devido a sua capacidade de retenção e imobilização desses compostos, 31 sendo que as algas podem acumular metais na sua parede externa por meio de mecanismos físicos, químicos e biológicos.…”

Section: Introductionunclassified

Biossorção passiva de cromo (VI) através da microalga Spirulina platensis

Magro¹,

Deon²,

Thomé³

et al. 2013

Quím. Nova

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Recebido em 8/1/13; aceito em 15/4/13; publicado na web em 1/7/13 PASSIVE BIOSORPTION OF CHROMIUM (VI) USING MICROALGAE Spirulina platensis. Effluents containing toxic metals are dangerous and more economical, efficient and environmentally friendly treatments must be studied, with the biosorption process with microbial biomass constituting an efficient solution. Thus, the ability of Spirulina platensis biomass for removing chromium (VI) using passive and active biosorption was evaluated. Inactive microalgae biomass and synthetic solution containing chromium (VI) were used to evaluate important factors in the process and biomass biosorption ability. Results of the experiments showed that microalgae have potential for biosorption of chromium (VI), attaining removal of 100.39 mg g -1 , and that pH was the variable with the greatest influence on the process.Keywords: toxic metal; passive biosorption; effluent. INTRODUÇÃOA contaminação ambiental proveniente de efluentes industriais tem agravado a situação de degradação do meio ambiente e o equilíbrio dos ecossistemas naturais. Um dos compostos mais preocupantes encontrados nesses efluentes são os metais tóxicos, os quais se apresentam nocivos ao meio ambiente e à saúde humana, devido a sua capacidade de bioacumulação e alto tempo de permanência no meio. 1Os metais tóxicos são fontes potenciais de degradação ambiental, visto que eles produzem alterações na qualidade das águas e do solo. Estas alterações têm um impacto direto no equilíbrio dos ecossistemas ambientais, afetando direta ou indiretamente a saúde dos seres humanos, sendo que alguns desses metais são capazes de provocar efeitos tóxicos agudos e câncer.2 Dentre os metais tóxicos, o cromo se destaca devido à grande gama de utilização em diversos processos industriais, como na indústria do aço e de ligas, indústria de cimento, galvanoplastia, curtumes, entre outras. 3Todas as formas de cromo podem ser tóxicas em grandes concentrações, sendo a hexavalente cerca de cem vezes mais tóxica do que a trivalente.4 Na forma trivalente o cromo é essencial ao metabolismo humano e sua carência causa doenças. Já na forma hexavalente é tóxico e cancerígeno.5 Os compostos de cromo hexavalente como cromatos, dicromatos e o ácido crômico são extremamente tóxicos e a ingestão de pequenas quantidades pode ser fatal.6 Os efluentes contendo cromo (VI) possuem alto poder de contaminação necessitando tratamento adequado para posterior destinação final. 5A capacidade bioacumulativa dos metais gera efeitos em longo prazo que nem sempre são previsíveis, principalmente no caso de compostos como o cromo, que não se decompõem ou que apresentam baixa degradabilidade, permanecendo ativo no meio ambiente, onde são absorvidos pelos organismos em concentrações muito maiores do que as de seu lançamento inicial.7 O metal no solo pode ser absorvido por plantas que posteriormente servirão de alimento diretamente ao homem ou aos animais. 8 No ambiente, o cromo atinge os lençóis freáticos com facilidade, ou mesmo reservatórios ou rios que são as font...

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Biosorption characteristics of Aspergillus flavus biomass for removal of Pb(II) and Cu(II) ions from an aqueous solution

Cited by 212 publications

References 27 publications

Bioremediation of Heavy Metals in Liquid Media Through Fungi Isolated from Contaminated Sources

Bioremediation of Heavy Metals in Liquid Media Through Fungi Isolated from Contaminated Sources

Application of dried plant biomass as novel low-cost adsorbent for removal of cadmium from aqueous solution

Biossorção passiva de cromo (VI) através da microalga Spirulina platensis

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