Solutions to hazardous wastes issues in the leather industry: adsorption of Chromium iii and vi from leather industry wastewaters using activated carbons produced from leather industry solid wastes

Jimenez-Paz, Jennifer; Lozada-Castro, Juan José; Lee, Edward; Williams, Orla; Stevens, Lee A.; Barraza-Burgos, Juan Manuel

doi:10.1016/j.jece.2023.109715

Cited by 15 publications

(4 citation statements)

References 73 publications

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“…Furthermore, in the case of the ROW 08 Supra activated carbon, an additional adsorption mechanism is the precipitation of chromium, in the form of hydroxides. The effect of the presence of carboxyl and lactone groups on the adsorption of Cr(III) and Ni(II) ions was also found by other researchers [31,42,55,66].…”

Section: Mechanism Of Adsorption Of Cr(iii) and Ni(ii) Cationssupporting

confidence: 68%

“…From leather industry solid wastes 220 T > F > L PSO > Elovich > IDP > PFO [42] From olive waste 12.46 L = T > F PSO > PFO [43] From fish scale 18.34 L > F PSO > PFO [44] From cordia africana 0.011…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…At pH = 6, the carboxyl groups with pKa = 3-6 and, to a lesser extent, the lactone groups with pKa = 7-9, are in an ionized form and are responsible for the adsorption of Cr(III) cations. Research by Jimenez-Paz et al [42] and Dash et al [43] proves that-in addition to carboxyl and lactone groups-amino groups also influence the adsorption of Cr(III). Moreover, according to the research by Kaźmierczak et al [30] conducted on biosorbents, Cr(III) ions can form chelate complexes with surface groups.…”

Section: Adsorption Staticsmentioning

confidence: 99%

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Adsorption of Chromium and Nickel Ions on Commercial Activated Carbon—An Analysis of Adsorption Kinetics and Statics

Lach,

Okoniewska

2023

Molecules

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The adsorption of nickel Ni(II) and chromium Cr(III) ions on the commercial activated carbons WG-12, F-300 and ROW 08, which differ in their pore structure and the chemical nature of their surfaces, were analyzed. The nickel ions Ni2+ were best adsorbed on the WG-12 activated carbon, which had the largest number of carboxyl and lactone groups on the surface of the activated carbons, and the largest specific surface area. Chromium, occurring in solutions with pH = 6 in the form of Cr(OH)2+ and Cr(OH)2+ cations, was best adsorbed on the ROW 08 Supra activated carbon, which is characterized by the highest values of water extract. The precipitation of chromium hydroxide in the pores of the activated carbon was the mechanism responsible for the high adsorption of Cr(III) on this carbon. For the other sorbents, the amount of carboxyl and lactone groups determined the amount of Cr(III) and Ni(II) adsorption. The adsorption kinetics results were described with PFO, PSO, Elovich and intraparticle diffusion models. The highest correlation coefficients for both the Cr(III) and Ni(II) ions were obtained using the PSO model. Among the seven adsorption isotherm models, very high R2 values were obtained for the Toth, Temkin, Langmuir and Jovanovic models. The Cr(III) ions were removed in slightly larger quantities than the Ni(II) ions. The capacities of the monolayer qm (calculated from the Langmuir isotherm) ranged from 55.85 to 63.48 mg/g for the Cr(III), and from 40.29 to 51.70 mg/g for the Ni(II) ions (pH = 6). The adsorption efficiency of Cr(III) and Ni(II) cations from natural waters with different degrees of mineralization (spring, weakly and moderately mineralized) was only a few percent lower than that from deionized water.

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Section: Mechanism Of Adsorption Of Cr(iii) and Ni(ii) Cationssupporting

confidence: 68%

Section: Adsorption Kineticsmentioning

confidence: 99%

Section: Adsorption Staticsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of Chromium and Nickel Ions on Commercial Activated Carbon—An Analysis of Adsorption Kinetics and Statics

Lach,

Okoniewska

2023

Molecules

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“…The tanning industry faces significant environmental challenges due to the discharge of pollutants such as chromium and dyes in wastewater. In leather processing, putrescible raw hides and skins are converted to non-putrescible leather through a tanning process that protects it from microbial degradation [1] , moisture, heat, and other environmental effects [2] . In leather processing, chrome tanning is the most widespread tanning method.…”

Section: Introductionmentioning

confidence: 99%