Evaluation of a Flue Gas Desulphurisation (FGD)-Gypsum from a Wet Limestone FGD as Adsorbent for Removal of Selenium in Water Streams

Córdoba, Patricia; González, María Eugenia; González, Ana Silvia; Maroto‐Valer, M. Mercedes; Moreno, Natàlia; Sepúlveda, Noelia; Navia, Rodrigo; Querol, Xavier

doi:10.4172/2161-0525.1000305

Cited by 1 publication

(1 citation statement)

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“…The research papers on using of APCR and FGDR as adsorbents in the literature are scarce, the more on their regeneration. The suitability of FGD gypsum as adsorbent of Pb(II) and Cd(II), as well as silicate, selenite, and phosphate ions from both simulated solutions and real wastewater, was previously examined (Bryant et al 2012;Córdoba et al 2015;Yan et al 2015;Kang et al 2018). The FGD gypsum has been found promising material in metals and anions removal from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Air pollution control and flue gas desulfurization residues from Polish copper smelting facility as adsorbents of Pb(II) and Cu(II) from aqueous solutions

Mikoda

Gruszecka‐Kosowska

Klimek

et al. 2018

Environ Sci Pollut Res

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This study aimed at evaluation of air pollution control residues (APCR) and flue gas desulfurization residues (FGDR) from copper foundry in Southwestern Poland as adsorbents of Cu(II) and Pb(II) from simulated wastewater. Studies of the impact of pH and adsorbent dose, as well as sorption isotherms, and kinetic and thermodynamic studies were conducted in a series of batch experiments. The maximum adsorption capacities were equal to 42.9 mg g Cu(II) and 124.4 mg g Pb(II) for APCR and 98.8 mg g Cu(II) and 124.7 mg g Pb(II) for FGDR, which was comparable to mineral adsorbents examined in other studies. Adsorption isotherms followed the Langmuir model, except for Pb(II) for FGDR, which followed Freundlich model. Sorption kinetics for both materials was properly expressed by pseudo-second-order equation. Mean adsorption energy parameter suggested that the adsorption might have occurred via physical bonding. Thermodynamic study revealed that adsorption was spontaneous and endothermic for Cu(II) and not spontaneous and exothermic for Pb(II), with lower temperature favoring the process. The results suggested that both materials had high affinity towards Cu(II) and Pb(II) ions and could be conducted industrial scale research for consideration as potential adsorbents from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%