Biosorption of iron(III)–cyanide complex anions to Rhizopus arrhizus: application of adsorption isotherms

Aksu, Zümríye; Çalik, A.; Dursun, Arzu; Demircan, Zafer

doi:10.1016/s0032-9592(98)00115-0

Cited by 88 publications

(52 citation statements)

References 9 publications

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“…This shows that the observed dye decolourization is mainly due to biosorption/adsorption. In most cases, this has been as a result of electrostatic pull/ attraction between the positively charged cell wall and the negatively charge dyes (Aksu et al 1999;Aksu and Tezer 2000). However, decolourization cannot only be attributed to biosorption alone.…”

Section: Discussionmentioning

confidence: 99%

Decolourization, degradation and detoxification of textile dyes by Aspergillus species

Ademola

Ogunjobi

2011

Environmentalist

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Decolourization, degradation and detoxification of four textile dyes (Madonna Blue, Pagoda Red, Market Blue and Market Red) by four Aspergillus species was carried out. The decolourization/degradation ability of the isolates was analyzed on the fifth day using UV/Visible spectrophotometer and FTIR spectrophotometer, while detoxification of the dyes was determined using phytotoxicity test. At the initial concentration of 200 mg/L of the dyes, the percentage decolourization potential of the fungal isolates ranged between 80.89 and 86.26% for Madonna Blue, 71.38-84.76% for Market Red, 70.46-79.46% for Market Blue and 60.68-74.82% for Pagoda Red in decreasing order. Aspergillus fumigatus (8F) demonstrated consistently highest decolourization potential for all the dyes than other isolates. Decrease in percentage decolourization of the dyes was observed when the concentration of the dyes was increased gradually from 100 to 500 mg/L at 100 mg/L interval. Percentage decolourization of Pagoda Red reduced from 60.68 to 10.31%, 66.47 to 19.71%, and 74.82 to 26.19% with A. ustus (3D), A. fumigatus (3E) and A. fumigatus (8F) respectively. Degradation of the dyes moiety using FTIR spectrum showed loss of functional groups such as C=O, C=N, C=C and C-H stretch of benzene, with the formation of new functional groups such as N=O group, C:C group and OH group of alcohol in the Madonna Blue and Pagoda Red samples treated with A. fumigatus (8F) when compared with untreated samples. Phytotoxicity study of the treated and untreated dye samples on maize germination showed the plumule and radicle length of positive control (water) to be 12.38 ± 1.20 and 5.62 ± 0.33 while untreated Madonna Blue was 6.68 ± 1.10 and 3.34 ± 0.92, A. fumigatus (3E) treated sample had 8.60 ± 0.59 and 4.32 ± 0.91 respectively. This study revealed the metabolic versatility of Aspergillus species to decolourize, degrade and detoxify textile dyes.

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Section: Discussionmentioning

confidence: 99%

Decolourization, degradation and detoxification of textile dyes by Aspergillus species

Ademola

Ogunjobi

2011

Environmentalist

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“…In contrast, Rhizopus arrhizus could remove iron(III)-cyanide complexes from aqueous solutions by active uptake and intracellular bioaccumulation without degradation occurring (Aksu et al 1999). Algae have also demonstrated high activity to degrade free cyanides at alkaline pH in concentrations as high as 400 ml )1 (Gurbuz et al 2004).…”

Section: Future Applications Of Biological Cyanide Degrading Systemsmentioning

confidence: 99%

The current and future applications of microorganism in the bioremediation of cyanide contamination

Baxter

Cummings

2006

Antonie Van Leeuwenhoek

113

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Inorganic cyanide and nitrile compounds are distributed widely in the environment, chiefly as a result of anthropogenic activity but also through cyanide synthesis by a range of organisms including higher plants, fungi and bacteria. The major source of cyanide in soil and water is through the discharge of effluents containing a variety of inorganic cyanide and nitriles. Here the fate of cyanide compounds in soil and water is reviewed, identifying those factors that affect their persistence and which determine whether they are amenable to biological degradation. The exploitation of cyanides by a variety of taxa, as a mechanism to avoid predation or to inhibit competitors has led to the evolution in many organisms of enzymes that catalyse degradation of a range of cyanide compounds. Microorganisms expressing pathways involved in cyanide degradation are briefly reviewed and the current applications of bacteria and fungi in the biodegradation of cyanide contamination in the field are discussed. Finally, recent advances that offer an insight into the potential of microbial systems for the bioremediation of cyanide compounds under a range of environmental conditions are identified, and the future potential of these technologies for the treatment of cyanide pollution is discussed.

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“…Iron ions are attracting wide research attention since they are found in many manufacturing industries such as coatings, car, aeronautic and steel industries [9]. Many absorbents have been reported for removal of iron ions (Fe 2+ or Fe 3+ ), such as bacterias [9,10], chitin [11], palm fruit bunch and maize cob [12], Bengal gram husk [13], tur dal husk [14], eggshells [15], ash [16], sawdust [17], activated carbon [18], natural zeolite [19], bentonite and quartz [20], and apatite [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…The general formula of apatite is M 10 2 , HAP) is a member of apatite mineral family. It is an ideal adsorptive material for long-term containment because of its high sorption capacity for heavy metals, low water solubility, high stability under reducing and oxidizing conditions, availability and low cost [24].…”

Section: Introductionmentioning

confidence: 99%

Removal of Fe3+ from Aqueous Solution by Natural Apatite

Qian¹,

Li²,

Wang³

et al. 2014

JSEMAT

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Biosorption of iron(III)–cyanide complex anions to Rhizopus arrhizus: application of adsorption isotherms

Cited by 88 publications

References 9 publications

Decolourization, degradation and detoxification of textile dyes by Aspergillus species

Decolourization, degradation and detoxification of textile dyes by Aspergillus species

The current and future applications of microorganism in the bioremediation of cyanide contamination

Removal of Fe3+ from Aqueous Solution by Natural Apatite

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