Chemical and biological removal of cyanides from aqueous and soil-containing systems

Aronstein, Boris N.; Maka, A.; Srivastava, V.J.

doi:10.1007/bf00167288

Cited by 45 publications

(14 citation statements)

References 26 publications

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“…Although we cannot absolutely exclude dissociation in our experiment, we suggest that by covering the microcosms with aluminium foil, incubating it in the dark and keeping the water content stable, the liberation of 13 C‐labelled C sources was mainly due to microbial ferrocyanide degradation. This is in line with a previous study observing a 2.5‐ to 3.5‐fold increase in cyanide reduction when sterile soil slurries were inoculated with different microorganisms (Aronstein et al ., ).…”

Section: Discussionmentioning

confidence: 98%

“…Although there are various reports of microorganisms capable of degradation of metal‐cyanide complexes using it as nutrient source (Aronstein et al ., ; Barclay et al ., ,b; Dursun et al ., ; Yanase et al ., ; Kwon et al ., ), several studies neglected controls for photolysis and physical dissociation. It is well established that ferrocyanide complexes are very stable in the dark, with projected half‐lives of 1–1000 years depending on pH, temperature and redox conditions, but decompose rapidly when exposed to daylight with dissociation rates of 8% h −1 (Meeussen et al ., ).…”

Section: Discussionmentioning

confidence: 99%

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Long‐term ferrocyanide application via deicing salts promotes the establishment of Actinomycetales assimilating ferrocyanide‐derived carbon in soil

Gschwendtner

Mansfeldt

Kublik

et al. 2016

Microbial Biotechnology

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SummaryCyanides are highly toxic and produced by various microorganisms as defence strategy or to increase their competitiveness. As degradation is the most efficient way of detoxification, some microbes developed the capability to use cyanides as carbon and nitrogen source. However, it is not clear if this potential also helps to lower cyanide concentrations in roadside soils where deicing salt application leads to significant inputs of ferrocyanide. The question remains if biodegradation in soils can occur without previous photolysis. By conducting a microcosm experiment using soils with/without pre‐exposition to road salts spiked with 13C‐labelled ferrocyanide, we were able to confirm biodegradation and in parallel to identify bacteria using ferrocyanide as C source via DNA stable isotope probing (DNA‐SIP), TRFLP fingerprinting and pyrosequencing. Bacteria assimilating 13C were highly similar in the pre‐exposed soils, belonging mostly to Actinomycetales (Kineosporia, Mycobacterium, Micromonosporaceae). In the soil without pre‐exposition, bacteria belonging to Acidobacteria (Gp3, Gp4, Gp6), Gemmatimonadetes (Gemmatimonas) and Gammaproteobacteria (Thermomonas, Xanthomonadaceae) used ferrocyanide as C source but not the present Actinomycetales. This indicated that (i) various bacteria are able to assimilate ferrocyanide‐derived C and (ii) long‐term exposition to ferrocyanide applied with deicing salts leads to Actinomycetales outcompeting other microorganisms for the use of ferrocyanide as C source.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Long‐term ferrocyanide application via deicing salts promotes the establishment of Actinomycetales assimilating ferrocyanide‐derived carbon in soil

Gschwendtner

Mansfeldt

Kublik

et al. 2016

Microbial Biotechnology

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“…A large number of studies have proved that free cyanide can be rapidly biodegraded by micro-organisms (Knowles and Bunch 1986;Kunz et al 1994;Fernandez and Kunz 2005), however, many cyanide complexes including iron cyanide complexes tend to be resistant to microbial degradation (Aronstein et al 1994). There are only few reports of microbial (Cherryholmes et al 1985;Dursun et al 1999) and fungal (Barclay et al 1998) biodegradation of metal cyanide complexes, but this has only been observed during in vitro studies, and most often with strains isolated from contaminated sites.…”

Section: Phytoremediation -Case Studiesmentioning

confidence: 99%

Phytoremediation of Cyanide

Srivastava

Muni

2010

Plant Adaptation and Phytoremediation

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Free cyanide and complex cyanide, including HCN and CN − is the most reactive and toxic substance of all industrial and anthropogenic pollutants. Many studies till date have proved that cyanide can be efficiently removed by plants. From the economic point of view, phytoremediation could be an attractive and useful technology in dealing with this dangerous pollutant. Phytoremediation of complex and free cyanide include removal of cyanide by terrestrial and aquatic plants. Experiments using free and complex cyanide have shown that many terrestrial and aquatic plants including willow, sorghum, cassava and water hyacinth can remove free cyanide from the hydroponic media. Cyanide uptake in plants can be associated with very complex physiological mechanisms which include transport and assimilation of cyanide within the plants for catering plant's nitrogen needs. Transport and metabolism of different chemical species of cyanide differ in various plant species including trees, grasses and aquatic plants. Again uptake of cyanide by roots is depending on its form and condition. A detailed insight of uptake, transport and assimilation of cyanide compounds in plants is discussed here. In this chapter, chemical nature of cyanide, possible industrial pollutant sources, various phytoremediation approaches, mechanism of cyanide assimilation in plants, and genomics of cyanide remedy are evaluated.

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“…Therefore wastewaters containing cyanide must be released to the environment only after detoxification. Several methods are available for cyanide removal and/or detoxification including alkaline chlorination, wet-air oxidation, ozonization, Caro's acid, copper-catalyzed hydrogen peroxide, ion exchange, electrolytic oxidation, AVR (acidification, volatilization, reneutralization) process, sulphur dioxide process, reverse osmosis, thermal hydrolysis, SO 2 /air (INCO process) natural degradation, activated carbon adsorption (Patterson 1985;Palmer et al 1988;Aronstein et al 1994;Dubey and Holmes 1995;Young and Jordan 1995;Desai and Ramakrishna 1998;Gonçalves et al 1998;Patil and Paknikar 2000;Akcil 2003;Kao et al 2003;). However many of these treatments are not always well adapted and pose technological, disposal and cost problems (Wild et al 1994;Watanabe et al 1998;Patil and Paknikar 2000;Kao et al 2003;Campos et al 2006).…”

Section: Introductionmentioning

confidence: 98%

Isolation of a strain of Aspergillus fumigatus able to grow in minimal medium added with an industrial cyanide waste

Sabatini

Ferrini²,

Micheloni

et al. 2011

World J Microbiol Biotechnol

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The present note refers the results about the isolation of an Aspergillus fumigatus strain able to grow on an industrial cyanide waste as nitrogen source. The fungus was selected from an alkaline unpolluted soil in enrichment cultures in 50 ml of Minimal Medium added with 20 mmol glucose and supplemented initially with 0.1 mmol KCN and then with 70 μl of a waste solution from a jewelry industry containing free cyanide and cyanide complexes of heavy metal ions including copper, silver, nickel, and others. The cyanide content of the waste was 1,500 ppm. The fungal growth was monitored determining dry weight, protein content and glucose consumption. The fungus efficiently utilized the cyanide as evidenced by the decrease in the inoculated medium of the compound under detection limits within 24 h and the concomitant growth within 15 days during which periodical additions of the waste to the cultures were made. The amount of the cyanide in the biomass of the fungus grown in presence of the waste was very scarce and comparable to that in absence of the pollutant. Furthermore the fungus was able to sequestrate metals such Ag, Cu, and Ni as a resistance mechanism against heavy metals. In conclusion our results are of interest for biodegradation plans of electroplating industrial wastes containing cyanide based pollutants.

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Chemical and biological removal of cyanides from aqueous and soil-containing systems

Cited by 45 publications

References 26 publications

Long‐term ferrocyanide application via deicing salts promotes the establishment of Actinomycetales assimilating ferrocyanide‐derived carbon in soil

Long‐term ferrocyanide application via deicing salts promotes the establishment of Actinomycetales assimilating ferrocyanide‐derived carbon in soil

Phytoremediation of Cyanide

Isolation of a strain of Aspergillus fumigatus able to grow in minimal medium added with an industrial cyanide waste

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