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Novel biomaterials from citric acid fermentation as biosorbents for removal of metals from waste chromated copper arsenate wood leachates.

Dhillon, Gurpreet Singh; Guitaya, Mandé Léa Rosine; Kaur, Surinder; Hegde, Krishnamoorthy; Brar, Satinder Kaur; Drogui, Patrick; Verma, Mausam P. (2017). Novel biomaterials from citric acid fermentation as biosorbents for removal of metals from waste chromated copper arsenate wood leachates. International Biodeterioration & Biodegradation , vol. 119 . p. 147-154. DOI: 10.1016/j.ibiod.2016.09.014.

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Résumé

The paper discusses the potential of different waste biomaterials for biosorption. Waste biomaterials after citric acid fermentation and chitosan extraction using Aspergillus niger were evaluated for biosorption of toxic metals (Cu, Cr and As) from leachates of chromated copper arsenate woods. The different waste BMs, such as fungal biomass (living and dead), alkali insoluble material and acid and alkali insoluble material were used in this study. The effect of different parameters, such as biosorbent concentration, metal concentration and contact time were investigated. The fitness of biosorption data for Freundlich and Langmuir adsorption models was investigated through batch adsorption technique. Among the adsorption isotherm tested, Langmuir isotherm gave the best fit with correlation coefficients (R²) value ranging from 0.89 to 0.97; 0.96–0.99 and 0.76–0.95 for As, Cr and Cu, respectively using solid state fermented biomass. Similarly, the significant removal of metals (>60% in leachate 2) from waste CCA wood leachate was achieved with the different BMs. Therefore, this study demonstrates the potential of CA fermentation derived waste BMs for biosorption of toxic metals from waste waters.

Type de document: Article
Mots-clés libres: fungal biomass; biosorbent; alkali insoluble material; acid and alkali insoluble material; apple industry waste; CCA woods
Centre: Centre Eau Terre Environnement
Date de dépôt: 07 mai 2018 19:28
Dernière modification: 07 mai 2018 19:28
URI: http://espace.inrs.ca/id/eprint/6432

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