title: Biogenic glutamic acid-based resin: Its synthesis and application in the removal of cobalt(II).
abstract: Inexpensive biogenic glutamic acid has been utilized to synthesize a cross-linked dianionic polyelectrolyte (CDAP) containing metal chelating ligands. Cycloterpolymerization, using azoisobutyronitrile as an initiator, of N,N-diallylglutamic acid hydrochloride, sulfur dioxide and a cross-linker afforded a pH-responsive cross-linked polyzwitterionic acid (CPZA) which upon basification with NaOH was converted into CDAP. The new resin, characterized by a multitude of spectroscopic techniques as well as Scanning Electron Microscopy (SEM) and Brunauer-Emmett-Teller (BET) analyses, was evaluated for the removal of Co(II) as a model case under different conditions. The adsorption capacity of 137mgg-1does indeed make the resin as one of the most effective sorbents in recent times. The resin leverages its cheap natural source and ease of regeneration in combination with its high and fast uptake capacities to offer a great promise for wastewater treatment. The resin has demonstrated remarkable efficiency in removing toxic metal ions including arsenic from a wastewater sample.
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia(1).
authors.forename: Zakariyah A
authors.initials: ZA
authors.lastname: Jamiu
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia(1).
authors.forename: Tawfik A
authors.initials: TA
authors.lastname: Saleh
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia(1). Electronic address: shaikh@kfupm.edu.sa.
authors.forename: Shaikh A
authors.initials: SA
authors.lastname: Ali
mesh_terms: D000327:Adsorption; D002614:Chelating Agents / Q000737:chemistry; D003035:Cobalt / Q000302:isolation & purification*; D005971:Glutamates / Q000138:chemical synthesis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D013816:Thermodynamics; D013818:Thermogravimetry; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D002614:Chelating Agents; D003035:Cobalt; D005971:Glutamates; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Chelating resin; Co (II); Cyclopolymerization; Glutamic acid; Wastewater treatment