Removal of metsulfuron methyl by granular activated carbon adsorption

Abdul, Javeed M.; Vigneswaran, S.; Shim, Wang Geun; Kandasamy, Jaya

doi:10.5004/dwt.2010.1540

Cited by 9 publications

(1 citation statement)

References 11 publications

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“… S. no. Adsorbents Adsorption capacity (Q max ) (mg/g) References 1 Pectin-iron oxide 48.99 10 2 Chitosan-bound Fe 3 O 4 magnetic nanoparticles 21.5 41 3 Aminated polyacrylonitrile nanofiber mats 30.40 29 4 Carbon nanotubes 24.49 42 5 Carboxylmethyl-β-cyclodextrinconjugated magnetics nanoparticle 47.29 43 6 Fe 3 O 4 magnetic nanoparticles coated with humic acid 46.3 44 7 Magnetic gamma-Fe 2 O 3 nanoparticles coated with poly-l-cysteine 42.9 45 8 Magnetic nano-adsorbent modified by gum arabic 38.5 46 9 Hydroxyapatite nanoparticles 36.9 47 10 Maghemite nanoparticle 27.7 48 11 Amino-functionalized magnetic nanosorbent 25.77 49 …”

Section: Resultsmentioning

confidence: 99%

Two–three parameters isotherm modeling, kinetics with statistical validity, desorption and thermodynamic studies of adsorption of Cu(II) ions onto zerovalent iron nanoparticles

Dada

Adekola

Odebunmi

et al. 2021

Sci Rep

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Adsorption of problematic copper ions as one of the endocrine disruptive substances from aqueous solution onto nanoscale zerovalent iron (nZVI) was studied. The high pore size 186.9268 Å, pore diameter 240.753 Å, and BET surface area 20.8643 m2 g−1 and pH(pzc) enlisted nZVI as an efficient nano-adsorbent for treatment of heavy metals from synthetic wastewater. SEM and EDX revealed the morphology and elemental distribution before and after adsorption. 98.31% removal efficiency was achieved at optimum adsorption operational parameters. Of all the thirteen isotherm models, equilibrium data were well fitted to Langmuir. Kinetics and mechanism data across the concentrations from 10 to 200 mg L−1 were analyzed by ten models. PSO best described kinetics data as confirmed by various statistical error validity models. The intraparticle diffusion model described that the intraparticle diffusion was not the only rate-limiting step. The adsorption mechanism was diffusion governed established by Bangham and Boyd models. Feasible, spontaneous, endothermic, and degree of randomness were reveal by the thermodynamic studies. Better desorption index and efficiency were obtained using HCl suggesting multiple mechanism processes. The performance of ZVI suggested it has a great potential for effective removal of endocrine disruptive cationic contaminant from wastewater.

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