Removal of Pb2+ using a biochar–alginate capsule in aqueous solution and capsule regeneration

Amuda, 2007, Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon, Biochem. Eng. J., 36, 174, 10.1016/j.bej.2007.02.013 Bailey, 1999, A review of potentially low-cost sorbents for heavy metals, Water Res., 33, 2469, 10.1016/S0043-1354(98)00475-8 Blandino, 1999, Formation of calcium alginate gel capsules: influence of sodium alginate and CaCl2 concentration on gelation kinetics, J. Biosci. Bioeng., 88, 686, 10.1016/S1389-1723(00)87103-0 Cao, 2010, Properties of dairy-manure-derived biochar pertinent to its potential use in remediation, Bioresour. Technol., 101, 5222, 10.1016/j.biortech.2010.02.052 Chen, 2007, Kinetic and isothermal studies of lead ion adsorption onto palygorskite clay, J. Colloid. Interf. Sci., 307, 309, 10.1016/j.jcis.2006.10.054 Clark, 1987, Structural and mechanical properties of biopolymer gels, 57 Duong, 2011, Determining contamination level of heavy metals in road dust from busy traffic areas with different characteristics, J. Environ. Manage., 92, 554 Freundlich, 1906, über die adsorption in lösungen, Z. Phys. Chem., 57, 385 Goel, 2005, Removal of lead (II) by adsorption using treated granular activated carbon: batch and column studies, J. Hazard. Mater., 125, 211, 10.1016/j.jhazmat.2005.05.032 Googerdchian, 2012, Lead sorption properties of nanohydroxyapatite–alginate composite adsorbents, Chem. Eng. J., 200–202, 471, 10.1016/j.cej.2012.06.084 Gotoh, 2004, Preparation of alginate–chitosan hybrid gel beads and adsorption of divalent metal ions, Chemosphere, 55, 135, 10.1016/j.chemosphere.2003.11.016 Haghseresht, 1998, Adsorption characteristics of phenolic compounds onto coal-reject-derived adsorbents, Energy Fuel, 12, 1100, 10.1021/ef9801165 Hall, 1966, Pore- and solid-diffusion kinetics in fixed-bed adsorption under constant-pattern conditions, Ind. Eng. Chem. Fund., 5, 212, 10.1021/i160018a011 Ho, 2002, Equilibrium sorption isotherm for metal ions on tree fern, Process Biochem., 37, 1421, 10.1016/S0032-9592(02)00036-5 Ibáñez, 2002, Potential of protonated alginate beads for heavy metals uptake, Hydrometallurgy, 64, 89, 10.1016/S0304-386X(02)00012-9 Idris, 2012, Synthesis of magnetic alginate beads based on maghemite nanoparticles for Pb(II) removal in aqueous solution, J. Ind. Eng. Chem., 18, 1582, 10.1016/j.jiec.2012.02.018 Issabayeva, 2006, Removal of lead from aqueous solutions on palm shell activated carbon, Bioresour. Technol., 97, 2350, 10.1016/j.biortech.2005.10.023 Jeon, 2002, Characteristics of metal removal using carboxylated alginic acid, Water Res., 36, 1814, 10.1016/S0043-1354(01)00389-X Jeon, 2002, Novel immobilization of alginic acid for heavy metal removal, Biochem. Eng. J., 11, 159, 10.1016/S1369-703X(02)00020-7 Khoo, 2001, Biosorption of gold by immobilized fungal biomass, Biochem. Eng. J., 8, 51, 10.1016/S1369-703X(00)00134-0 Koyama, 2004, Cultivation of yeast and plant cells entrapped in the low-viscous liquid-core of an alginate membrane capsule prepared using polyethylene glycol, J. Biosci. Bioeng., 97, 111, 10.1016/S1389-1723(04)70177-2 Lacour, 2001, Removal of heavy metals in industrial wastewaters by ion-exchanger grafted textiles, Anal. Chim. Acta, 428, 121, 10.1016/S0003-2670(00)01215-0 Langmuir, 1916, The constitution and fundamental properties of solids and liquids, J. Am. Chem. Soc., 38, 2221, 10.1021/ja02268a002 Liu, 2009, Removal of lead from water using biochars prepared from hydrothermal liquefaction of biomass, J. Hazard. Mater., 167, 933, 10.1016/j.jhazmat.2009.01.085 Lu, 2012, Relative distribution of Pb2+ sorption mechanisms by sludge-derived biochar, Water Res., 46, 854, 10.1016/j.watres.2011.11.058 Mijangosa, 2003, Phenol adsorption in immobilized activated carbon with alginate gels, Sep. Sci. Technol., 38, 1851, 10.1081/SS-120019412 Mohan, 2007, Sorption of arsenic, cadmium, and lead by chars produced from fast pyrolysis of wood and bark during bio-oil production, J. Colloid. Interf. Sci., 310, 57, 10.1016/j.jcis.2007.01.020 Mørch, 2006, Effect of Ca2+, Ba2+, and Sr2+ on alginate microbeads, Biomacromolecules, 7, 1471, 10.1021/bm060010d Nandi, 2009, Adsorption characteristics of brilliant green dye on kaolin, J. Hazard. Mater., 161, 387, 10.1016/j.jhazmat.2008.03.110 Nomanbhay, 2005, Removal of heavy metal from industrial wastewater using chitosan coated oil palm shell charcoal, Electron. J. Biotechnol., 8, 43, 10.2225/vol8-issue1-fulltext-7 Örnek, 2007, Adsorption of lead onto formaldehyde or sulphuric acid treated acorn waste: equilibrium and kinetic studies, Biochem. Eng. J., 37, 192, 10.1016/j.bej.2007.04.011 Pandey, 2003, Role of humic acid entrapped calcium alginate beads in removal of heavy metals, J. Hazard. Mater., 98, 177, 10.1016/S0304-3894(02)00316-3 Park, 2007, Activated carbon-containing alginate adsorbent for the simultaneous removal of heavy metals and toxic organics, Process Biochem., 42, 1371, 10.1016/j.procbio.2007.06.016 Paul Chen, 2001, Equilibrium and kinetics of metal ion adsorption onto a commercial H-type granular activated carbon: experimental and modeling studies, Water Res., 35, 2385, 10.1016/S0043-1354(00)00521-2 Shao, 2011, Removal of lead (II) from aqueous solution by a new biosorption material by immobilizing Cyanex272 in cornstalks, Desalination, 265, 177, 10.1016/j.desal.2010.07.049 Shukla, 2002, The role of sawdust in the removal of unwanted materials from water, J. Hazard. Mater., 95, 137, 10.1016/S0304-3894(02)00089-4 Steginsky, 1992, Structural determination of alginic acid and the effects of calcium binding as determined by high-field n.m.r, Carbohydr. Res., 225, 11, 10.1016/0008-6215(92)80036-Z Tanriseven, 2001, Immobilization of invertase within calcium alginate gel capsules, Process Biochem., 36, 1081, 10.1016/S0032-9592(01)00146-7 Wilson, 2006, Select metal adsorption by activated carbon made from peanut shells, Bioresour. Technol., 97, 2266, 10.1016/j.biortech.2005.10.043