Modelling, analysis and optimization of adsorption parameters for H3PO4 activated rubber wood sawdust using response surface methodology (RSM)

被引：175

作者：

Kalavathy M, Helen ^{[1
]}

Regupathi, Iyyaswami ^{[2
]}

Pillai, Magesh Ganesa ^{[1
]}

Miranda, Lima Rose ^{[1
]}

机构：

[1] Anna Univ, AC Coll Technol, Dept Chem Engn, Madras 600025, Tamil Nadu, India

[2] Natl Inst Technol Karnataka, Dept Chem Engn, Mangalore 575025, India

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2009年 / 70卷 / 01期

关键词：

Adsorption; Response surface methodology; H3PO4 activated rubber wood sawdust; Copper; Optimization; POLYMER-ASSISTED ULTRAFILTRATION; WASTE-WATER; AQUEOUS-SOLUTION; HEAVY-METALS; COPPER REMOVAL; CARBON; BIOSORPTION; BIOMASS; ADSORBENT; KINETICS;

D O I：

10.1016/j.colsurfb.2008.12.007

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Adsorption capacity of Cu2+ from aqueous solution onto (HPO4)-P-3 activated carbon using rubber wood sawdust (RSAC) was investigated in a batch system. Kinetic and isotherm studies were carried out, the thermodynamic parameters like standard Gibb's free energy (Delta G degrees), enthalpy (Delta H degrees) and entropy (Delta S degrees) were evaluated. The pseudo-second-order model was found to explain the kinetics of Cu2+ adsorption most effectively. The process optimization was performed through Central Composite Rotary Design using response surface methodology (RSM) by Design Expert Version 5.0.7 (STAT-EASE Inc., Minneapolis, USA). An initial concentration of 35 rng L-1, temperature of 26 degrees C, carbon loading of 0.45 g (100 mL)(-1), adsorption time 208 min and pH of 6.5 was found to be the optimum conditions for the maximum uptake of copper ions of 5.6 mg g-(1) in batch mode. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：35 / 45

页数：11

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