Potentials of Some Waste Biomaterials As Sorbents for Gold- and Silver-Cyanide Removal from Aqueous Matrices

Patil Yogesh*, Gaddi Shivanand and Hunashal Rajiv (10/2015) Potentials of Some Waste Biomaterials as Sorbents for Gold- and Silver-Cyanide Removal from Aqueous Matrices Advanced Materials Research 1130: 627-630 (Scopus; Ei Compendex (CPX); Cambridge Scientific Abstracts (CSA); Chemical Abstracts (CA

4 Pages Posted: Last revised: 30 Jan 2019

See all articles by Yogesh Patil

Yogesh Patil

Symbiosis International (Deemed University), Pune, India

Shivanand Gaddi

Chh. Shahu Central Institute of Business, Education and Research

Rajiv Hunashala

Chhatrapati Shahu Institute of Business Education

Date Written: October 9, 2015

Abstract

Plating, printed circuit board, jewellery units, photofinishing and mining industries emanate large-volume low-tenor effluents containing metal-cyanide (MxCN) like gold- and silvercyanide. Since metal moiety of MxCN being precious, non-renewable and finite resource; their complete removal from effluents is the key. Biosorption has immense potential of becoming efficient and economical alternative to recover the wasted metal resource over conventional methods. Twenty-eight low-cost biomaterials obtained from diverse sources were screened for gold- and silver-cyanide uptake. Study revealed that maximum uptake of both MxCN took place at acidic pH. Based on maximum uptake, Rice Husk (RH) and Eicchornia root (ER) biomass were selected for gold- and silver-cyanide sorption, respectively, for further studies. Optimal conditions for sorption were: pH (4.0-7.0), biosorbent quantity (1-3%), rate of uptake (40 min) and initial MxCN concentration (5-500 ╬╝mol). Biosorption data obtained conformed to Freundlich and Langmuir adsorption models (R2>0.98). NaOH acted as an efficient desorbing agent (>95%).

Suggested Citation

Patil, Yogesh and Gaddi, Shivanand and Hunashala, Rajiv, Potentials of Some Waste Biomaterials As Sorbents for Gold- and Silver-Cyanide Removal from Aqueous Matrices (October 9, 2015). Patil Yogesh*, Gaddi Shivanand and Hunashal Rajiv (10/2015) Potentials of Some Waste Biomaterials as Sorbents for Gold- and Silver-Cyanide Removal from Aqueous Matrices Advanced Materials Research 1130: 627-630 (Scopus; Ei Compendex (CPX); Cambridge Scientific Abstracts (CSA); Chemical Abstracts (CA. Available at SSRN: https://ssrn.com/abstract=2672843

Yogesh Patil (Contact Author)

Symbiosis International (Deemed University), Pune, India ( email )

Lavale (Hill top)
Gram: Lavale, Tal: Mulshi, Dist: Pune
Pune, Maharashtra 412115
India

HOME PAGE: http://https://siu.edu.in/research.php

Shivanand Gaddi

Chh. Shahu Central Institute of Business, Education and Research ( email )

Kolhapur
Maharashtra
India

Rajiv Hunashala

Chhatrapati Shahu Institute of Business Education

Kolhapur
India

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