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Bioremediation of Cd(II), Pb(II) and Cu(II) from industrial effluents by Moringa stenopetala seed husk.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2019; 54(4):337-351.JE

Abstract

In the current study, the removal of Cd(II), Pb(II) and Cu(II) ions from industrial effluent was investigated using powdered Moringa stenopetala seed husk. The surface functionality, morphology, crystallinity, thermal stability, the surface charge and surface area of the powdered Moringa stenopetala seed husk was studied using FTIR, SEM, XRD, TGA, zeta potential and BET, respectively. Processing parameters, namely contact time, adsorbent dosage, concentration, pH, agitation speed, temperature and particle size were investigated using the batch adsorption method. The maximum adsorption percentage for Cd(II), Pb(II) and Cu(II) ions from synthetic wastewater was found to be 99.1, 99.4 and 99.1%, compared to 95.3, 95.5 and 94.1%, respectively, for adsorption of these metal ions from real wastewater. The maximum adsorption capacity was found to be 52.63, 47.62 and 31.25 mg/g adsorbent for Cd(II), Pb(II) and Cu(II), respectively. The Freundlich isotherm provided a better fit for the adsorption equilibrium data than the Langmuir isotherm, while the kinetics were well defined by the pseudo-second-order model (R2 = 1). Furthermore, the positive value of the enthalpy change (ΔH) indicated that the adsorption of metal ions on the adsorbent was endothermic. The negative values of the Gibbs free energy change (ΔG) confirmed that the adsorption process on the surface of the adsorbent was spontaneous.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Kebede TG
a Department of Chemistry , University of South Africa , Florida , South Africa.
Dube S
a Department of Chemistry , University of South Africa , Florida , South Africa.
Mhuka V
a Department of Chemistry , University of South Africa , Florida , South Africa.
Nindi MM
a Department of Chemistry , University of South Africa , Florida , South Africa.

MeSH

AdsorptionBiodegradation, EnvironmentalCadmiumCopperHydrogen-Ion ConcentrationKineticsLeadMoringaSeedsTemperatureWastewaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30614373

Citation

Kebede, Temesgen G., et al. "Bioremediation of Cd(II), Pb(II) and Cu(II) From Industrial Effluents By Moringa Stenopetala Seed Husk." Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, vol. 54, no. 4, 2019, pp. 337-351.
Kebede TG, Dube S, Mhuka V, et al. Bioremediation of Cd(II), Pb(II) and Cu(II) from industrial effluents by Moringa stenopetala seed husk. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2019;54(4):337-351.
Kebede, T. G., Dube, S., Mhuka, V., & Nindi, M. M. (2019). Bioremediation of Cd(II), Pb(II) and Cu(II) from industrial effluents by Moringa stenopetala seed husk. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 54(4), 337-351. https://doi.org/10.1080/10934529.2018.1551648
Kebede TG, et al. Bioremediation of Cd(II), Pb(II) and Cu(II) From Industrial Effluents By Moringa Stenopetala Seed Husk. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2019;54(4):337-351. PubMed PMID: 30614373.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioremediation of Cd(II), Pb(II) and Cu(II) from industrial effluents by Moringa stenopetala seed husk. AU - Kebede,Temesgen G, AU - Dube,Simiso, AU - Mhuka,Vimbai, AU - Nindi,Mathew M, Y1 - 2019/01/07/ PY - 2019/1/8/pubmed PY - 2019/6/22/medline PY - 2019/1/8/entrez KW - seed husk KW - adsorption KW - industrial effluent KW - isotherm model KW - kinetics KW - thermodynamics SP - 337 EP - 351 JF - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering JO - J Environ Sci Health A Tox Hazard Subst Environ Eng VL - 54 IS - 4 N2 - In the current study, the removal of Cd(II), Pb(II) and Cu(II) ions from industrial effluent was investigated using powdered Moringa stenopetala seed husk. The surface functionality, morphology, crystallinity, thermal stability, the surface charge and surface area of the powdered Moringa stenopetala seed husk was studied using FTIR, SEM, XRD, TGA, zeta potential and BET, respectively. Processing parameters, namely contact time, adsorbent dosage, concentration, pH, agitation speed, temperature and particle size were investigated using the batch adsorption method. The maximum adsorption percentage for Cd(II), Pb(II) and Cu(II) ions from synthetic wastewater was found to be 99.1, 99.4 and 99.1%, compared to 95.3, 95.5 and 94.1%, respectively, for adsorption of these metal ions from real wastewater. The maximum adsorption capacity was found to be 52.63, 47.62 and 31.25 mg/g adsorbent for Cd(II), Pb(II) and Cu(II), respectively. The Freundlich isotherm provided a better fit for the adsorption equilibrium data than the Langmuir isotherm, while the kinetics were well defined by the pseudo-second-order model (R2 = 1). Furthermore, the positive value of the enthalpy change (ΔH) indicated that the adsorption of metal ions on the adsorbent was endothermic. The negative values of the Gibbs free energy change (ΔG) confirmed that the adsorption process on the surface of the adsorbent was spontaneous. SN - 1532-4117 UR - https://www.unboundmedicine.com/medline/citation/30614373/Bioremediation_of_Cd_II__Pb_II__and_Cu_II__from_industrial_effluents_by_Moringa_stenopetala_seed_husk_ DB - PRIME DP - Unbound Medicine ER -