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Waste-activated sludge (WAS) as Cr(III) sorbent biosolid from wastewater effluent.
Colloids Surf B Biointerfaces. 2008 Oct 15; 66(2):240-5.CS

Abstract

A biological sludge--waste-activated sludge (WAS)--from a dairy filtering station was investigated for the removal of trivalent chromium from aqueous solution. Kinetic results revealed that chromium adsorption was instantaneous. The removal rate increases up to pH 4 for contact times beyond 20 min. The equilibrium state is attained in 30 min in all the considered systems. The reaction orders as well as the diffusion rate constant were determined. Values adsorption isotherms measured at pH 3 generally followed the Langmuir model. The maximum uptake capacity was 25.64 mg/g. Values of thermodynamic parameters show that chromium (III) sorption on WAS is an exothermic process. This study provides an opportunity for the removal of heavy metals such as chromium from aqueous solutions using a low-cost biosolid as adsorbent support.

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Authors+Show Affiliations

Iddou A
Université des sciences et de la technologie Mohamed Boudiaf (USTO-MB), Bp. 1505 Bir El Djir, 31000 Oran, Algeria. iddouaek@yahoo.fr
Ouali MS
No affiliation info available

MeSH

AdsorptionChromiumDiffusionHydrogen-Ion ConcentrationSewageSurface PropertiesTemperatureThermodynamicsTime FactorsWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18693090

Citation

Iddou, A, and M S. Ouali. "Waste-activated Sludge (WAS) as Cr(III) Sorbent Biosolid From Wastewater Effluent." Colloids and Surfaces. B, Biointerfaces, vol. 66, no. 2, 2008, pp. 240-5.
Iddou A, Ouali MS. Waste-activated sludge (WAS) as Cr(III) sorbent biosolid from wastewater effluent. Colloids Surf B Biointerfaces. 2008;66(2):240-5.
Iddou, A., & Ouali, M. S. (2008). Waste-activated sludge (WAS) as Cr(III) sorbent biosolid from wastewater effluent. Colloids and Surfaces. B, Biointerfaces, 66(2), 240-5. https://doi.org/10.1016/j.colsurfb.2008.06.018
Iddou A, Ouali MS. Waste-activated Sludge (WAS) as Cr(III) Sorbent Biosolid From Wastewater Effluent. Colloids Surf B Biointerfaces. 2008 Oct 15;66(2):240-5. PubMed PMID: 18693090.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Waste-activated sludge (WAS) as Cr(III) sorbent biosolid from wastewater effluent. AU - Iddou,A, AU - Ouali,M S, Y1 - 2008/07/05/ PY - 2008/02/24/received PY - 2008/03/27/revised PY - 2008/06/24/accepted PY - 2008/8/12/pubmed PY - 2008/12/17/medline PY - 2008/8/12/entrez SP - 240 EP - 5 JF - Colloids and surfaces. B, Biointerfaces JO - Colloids Surf B Biointerfaces VL - 66 IS - 2 N2 - A biological sludge--waste-activated sludge (WAS)--from a dairy filtering station was investigated for the removal of trivalent chromium from aqueous solution. Kinetic results revealed that chromium adsorption was instantaneous. The removal rate increases up to pH 4 for contact times beyond 20 min. The equilibrium state is attained in 30 min in all the considered systems. The reaction orders as well as the diffusion rate constant were determined. Values adsorption isotherms measured at pH 3 generally followed the Langmuir model. The maximum uptake capacity was 25.64 mg/g. Values of thermodynamic parameters show that chromium (III) sorption on WAS is an exothermic process. This study provides an opportunity for the removal of heavy metals such as chromium from aqueous solutions using a low-cost biosolid as adsorbent support. SN - 0927-7765 UR - https://www.unboundmedicine.com/medline/citation/18693090/Waste_activated_sludge__WAS__as_Cr_III__sorbent_biosolid_from_wastewater_effluent_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0927-7765(08)00245-2 DB - PRIME DP - Unbound Medicine ER -