TY - JOUR
T1 - Effective removal of Cr(VI) ions from synthetic solution using mixed biomasses
T2 - Kinetic, equilibrium and thermodynamic study
AU - Saravanan, A.
AU - Kumar, P. Senthil
AU - Varjani, Sunita
AU - Karishma, S.
AU - Jeevanantham, S.
AU - Yaashikaa, P.R.
PY - 2021/4
Y1 - 2021/4
N2 - Heavy metals are the prominent toxic pollutant extensively present in the industrial waste. Due to its toxicity in nature it should be removed from the industrial waste. In this research, raw and pyrolysis assisted dragon fruit peel along with fungal biomass (Fusarium subglutinans) was utilized as a mixed adsorbent for the removal of Cr(VI) ions from the aqueous phase. FTIR, SEM, and EDX analyses were used to characterize the synthesized mixed biomasses (Fusarium subglutinans – RDFP and Fusarium subglutinans - PADFP). Batch adsorption tests reveal that optimum conditions for the effective removal of Cr(VI) ions onto mixed biomasses (pH = 4.0; biomass dosage =6.0 g/L for Fusarium subglutinans – RDFP, 3.5 g/L for Fusarium subglutinans – PADFP; temperature =30 °C; Cr(VI) ion concentration =25 mg/L; equilibrium time =60 min). The adsorption equilibrium data and contact time data were best fitted with Langmiur and Pseudo-first-order model, respectively. The monolayer adsorption capacities were found to be 11.0 mg/g for Fusarium subglutinans – RDFP and 16.52 mg/g for Fusarium subglutinans – PADFP. Thermodynamic parameters demonstrated that the adsorption was favorable at low temperatures and exothermic process. Overall results exposed that present mixed biomasses had superior adsorption capacity for the removal of Cr(VI) ions from the water/wastewater. © 2021 Elsevier Ltd.
AB - Heavy metals are the prominent toxic pollutant extensively present in the industrial waste. Due to its toxicity in nature it should be removed from the industrial waste. In this research, raw and pyrolysis assisted dragon fruit peel along with fungal biomass (Fusarium subglutinans) was utilized as a mixed adsorbent for the removal of Cr(VI) ions from the aqueous phase. FTIR, SEM, and EDX analyses were used to characterize the synthesized mixed biomasses (Fusarium subglutinans – RDFP and Fusarium subglutinans - PADFP). Batch adsorption tests reveal that optimum conditions for the effective removal of Cr(VI) ions onto mixed biomasses (pH = 4.0; biomass dosage =6.0 g/L for Fusarium subglutinans – RDFP, 3.5 g/L for Fusarium subglutinans – PADFP; temperature =30 °C; Cr(VI) ion concentration =25 mg/L; equilibrium time =60 min). The adsorption equilibrium data and contact time data were best fitted with Langmiur and Pseudo-first-order model, respectively. The monolayer adsorption capacities were found to be 11.0 mg/g for Fusarium subglutinans – RDFP and 16.52 mg/g for Fusarium subglutinans – PADFP. Thermodynamic parameters demonstrated that the adsorption was favorable at low temperatures and exothermic process. Overall results exposed that present mixed biomasses had superior adsorption capacity for the removal of Cr(VI) ions from the water/wastewater. © 2021 Elsevier Ltd.
KW - Adsorption
KW - Cr(VI) ions
KW - Fusarium subglutinans
KW - Isotherms
KW - Mixed biomass
KW - Wastewater
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U2 - 10.1016/j.jwpe.2020.101905
DO - 10.1016/j.jwpe.2020.101905
M3 - RGC 21 - Publication in refereed journal
SN - 2214-7144
VL - 40
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 101905
ER -
