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Optimization of Fe 2+ Removal from Coal Mine Wastewater using Activated Biochar of Colocasia esculenta
Author(s) -
Banerjee Soumya,
LaminKaot Augustine,
Joshi S. R.,
Mandal Tamal,
Halder Gopinath
Publication year - 2017
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143017x14902968254791
Subject(s) - colocasia esculenta , adsorption , wastewater , sorbent , biochar , central composite design , response surface methodology , chemistry , activated carbon , nuclear chemistry , factorial experiment , pulp and paper industry , waste management , environmental engineering , chromatography , pyrolysis , botany , environmental science , mathematics , biology , statistics , organic chemistry , engineering
The present study investigates the sorptive removal of Fe 2+ from simulated coal mine waste water using steam activated biochar (SABC) developed from the roots of Colocasia esculenta . The process was optimized by response surface methodology (RSM) under the influence of pH, temperature, adsorbent dosage and contact time at a constant shaking speed of 180 rpm with an initial concentration of 3 mg/L. The uptake performance of the biosorbent was assessed following a 2 4 full factorial experimental matrix developed by central composite design approach. Adsorbent was characterised by SEM, EDAX, XRD and B.E.T surface area analyzer. Maximum removal of 72.96% of Fe 2+ was observed at pH 7.75, temperature 37.5 °C, adsorbent dosage 1.5 g/L for a time period of 180 mins. The study suggested that SABC prepared from roots of Colocasia esculenta could be used as an efficient and cost effective sorbent for removal of Fe 2+ from coal mine wastewater.