Hexavalent chromium sorption by glycidyl methacrylate based copolymer

Macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate), PGME, was synthesized by suspension copolymerization and functionalized with diethylene triamine [PGME-deta]. Competitive sorption kinetics was studied from multicomponent Cr(VI), Cu(II), Co(II) and Cd(II) solution. Two kinetic models (the pseudo-first and the pseudo-second order) were used to determine the best-fit equation for the metals sorption by PGME-deta

Chelating copolymers: metal sorption kinetics and reusability

Macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate), PGME, was synthesized by suspension copolymerization and functionalized with diethylene triamine, PGME-deta. Kinetics for Au(III), Ag(I) and Cu(II) sorption, as well as the possibility of repeated recovery of Cu(II) ions was investigated.Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 24-28 September 200

Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions

Macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) with attached diethylene triamine [PGME-deta] with high amino-group content was used for the investigation of the Pd(II) sorption kinetics from mixed chloride/nitrate aqueous solutions in acidic medium (pH 2.0) at T=298 K. Four kinetic models were employed in order to comprehend the mechanism of Pd(II) sorption. The maximum experimental Pd(II) sorption capacity at initial pH 2.0 and 298 K was 20 mg g-1

Intraparticle diffusion and adsorption of heavy metals onto porous polymer

Intraparticle diffusion kinetic model (IPD) was used to elucidate the influence of macroporous glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) copolymer (PGME) with attached diethylene triamine (PGME-deta) on the competitive Cu(II), Cd(II), Co(II) and Ni(II) ions sorption from aqueous solutions. Surface sorption was examined by SEM-EDS analysis.Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 26-30 September 201

Efficient separation of Tc-99 from aqueous solution using pinecone activated carbon

Sorption of radioactive 99Tc-pertechnetate onto activated carbon prepared from pinecones was investigated. The parameters of contact time and Tc-99 concentration were varied. It was established that the sorption half-life, t1/2, was very short ~ 2.2 min, thus making this sorbent an excellent candidate for immediate pollution remediation, which is very important in the case of nuclear accidents. The kinetic data were found to follow closely the pseudosecond- order (PSO) kinetic model. Boyd model established the sorption dependence only on film diffusion. The partitioning/distribution coefficient, Kd, attained was 2729 cm3 g-1. The equilibration time was 3 h at room temperature (T=298 K)

Perrhenate sorption by amino-functionalized glycidyl methacrylate copolymer: investigation of rhenium as an analogue of radioactive technetium

In order to define the favorable conditions for radioactive technetium (99Tc) uptake, the sorption behavior of its non-active chemical analogue rhenium ( 75Re) on amino-functionalized macroporous hydrophilic copolymer was studied. The pseudo-second-order (PSO) model provided the best fit for the kinetic data, while the intraparticle diffusion (IPD) model indicated a pronounced influence of the porous structure on the sorption rates. The maximum sorption capacity was found to be 84 mg g-1 and 74 % removal efficiency was reached after 180 min in citrate buffer at pH 5.0

Diffusion-based kinetic modeling of textile dye adsorption by porous copolymer

Macroporous glycidyl dimethacrylate and ethylene glycol dimethacrylate copolymer functionalized with diethylene triamine, PGME-deta, was tested as adsorbent for removal of Acid Orange 10 (AO10) and Reactive Black 5 (RB5) from aqueous solutions. Diffusion-based kinetic models (intraparticle diffusion, Bangham and Boyd model) were used for interpretation of experimental data.Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 24-28 September 201