Show simple item record

dc.contributor.authorKhan, M.I.
dc.contributor.authorAlmesfer, M.K.
dc.contributor.authorDanish, M.
dc.contributor.authorAli, I.H.
dc.contributor.authorShoukry, H.
dc.contributor.authorPatel, Rajnikant
dc.contributor.authorGardy, J.
dc.contributor.authorNizami, A.S.
dc.contributor.authorRehan, M.
dc.date.accessioned2022-03-25T11:36:16Z
dc.date.accessioned2022-06-28T10:26:01Z
dc.date.available2022-03-25T11:36:16Z
dc.date.available2022-06-28T10:26:01Z
dc.date.issued2019-08
dc.identifier.citationKhan MI, Almesfer MK, Danish M et al (2019) Potential of Saudi natural clay as an effective adsorbent in heavy metals removal from wastewater. Desalination and Water Treatment. 158: 140-151.en_US
dc.identifier.urihttp://hdl.handle.net/10454/19033
dc.descriptionNoen_US
dc.description.abstractThis study aims to examine the potential of natural clay mineral from the southern part of Saudi Arabia as an effective adsorbent material for the removal of heavy metal ions of cadmium (Cd) and nickel (Ni) from aqueous solutions. The SEM analysis showed that clay particles had mixed shapes such as elongated rod-like and rectangular shape having rough corners with larger particles of 2-8 µm in size and smaller particles in the sub-micron size range. X-ray diffraction data revealed that clay particles had a good crystalline structure and composed of a mixture of various minerals including feldspar, illite, quartz, calcite, and gypsum. The BET surface area was found to be 35 ± 1 m ² /g and the average pore size and pore volume of 6.5 ± 0.5 nm and 5.7e-02 cc/g, respectively. The X-ray fluorescence analysis of clay showed main compounds of SiO₂ (47.33%), Al₂O₃ (18.14%), Fe₂O₃ (15.89%) with many others such as CaO, MgO, TiO₂, and K₂O in minor quantities. It was found that 1.2 g of clay removed up to 99.5% of Ni and 97.5% of Cd from 40 ppm aqueous solutions. The metal removal efficiencies were increased from around 95% up to 99% by increasing the pH of aqueous solutions from 4 to 11. The adsorption of Ni and Cd ions on Saudi clay was relatively fast, and up to 97% of ions were removed from solution within 45 min. The SEM-EDX and BET analysis for recycled clays further confirmed that the metal ions were removed from water through adsorption onto the clay. The experimental data fitted well with Langmuir and Freundlich isotherms. The maximum adsorption capacity of clay for Cd and Ni from isotherms was found to be 3.3 and 2.7 mg/g respectively. The findings of this study confirm the potential role of Saudi natural clay in wastewater treatment processes as a cheap, environment-friendly and safe natural adsorbent material.en_US
dc.description.sponsorshipThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through research groups program under grant number R.G.P1./97/40.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.5004/dwt.2019.24270en_US
dc.subjectHeavy metalsen_US
dc.subjectNatural clayen_US
dc.subjectAdsorptionen_US
dc.subjectWastewateren_US
dc.subjectWater pollutionen_US
dc.titlePotential of Saudi natural clay as an effective adsorbent in heavy metals removal from wastewateren_US
dc.status.refereedYesen_US
dc.date.Accepted2019-04-13
dc.date.application2019
dc.typeArticleen_US
dc.type.versionNo full-text in the repositoryen_US
dc.rights.licenseUnspecifieden_US
dc.date.updated2022-03-25T11:36:17Z
refterms.dateFOA2022-06-28T10:26:44Z
dc.openaccess.statusclosedAccessen_US


Item file(s)

Thumbnail
Name:
Patel_et_al_Desalination_and_W ...
Size:
2.046Mb
Format:
PDF
Description:
To keep suppressed, no permission ...
Thumbnail
Name:
PotentialofSaudinaturalclayasa ...
Size:
1.972Mb
Format:
PDF
Description:
To keep suppressed

This item appears in the following Collection(s)

Show simple item record