Removal of hexavalent chromium from aqueous solution using cone biomass of picea smithana as adsorbent

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dc.contributor.authorNajar, Gh Nabi
dc.contributor.supervisorMittal, Sunil
dc.date.accessioned2018-08-30T05:10:32Z
dc.date.accessioned2024-08-14T05:12:13Z
dc.date.available2018-08-30T05:10:32Z
dc.date.available2024-08-14T05:12:13Z
dc.date.issued2013
dc.date.issued2013
dc.description.abstractChromium has wide range of uses in various metal and chemical industries. Hence, it is discharged in environment in large quantities with effluent from these industries. Cr(VI) compounds have been recognized as toxic and may cause skin irritation to lung cancer, liver, kidney and gastric damage. Various physical and chemical processes such as ion exchange, chemical precipitation, membrane process and electrolytic extraction are used for the removal of chromium (VI) from wastewaters. However, high cost, large input of chemicals and incomplete removal of metal ions are some major disadvantages with these methods. Therefore, adsorption seems to be a better process for the removal of metal ions including Cr(VI) from contaminated wastewaters because of the expediency, ease of operation and design simplicity. In the present work the batch adsorption study has been carried out on cone biomass of Picea smithiana (CBP) as low cost adsorbent for the removal of Cr(VI) from the aqueous solution in comparison to the most widely used adsorbent activated charcoal (AC). The cones of P. smithiana are the waste materials and are often used for burning. Effects of various parameters (adsorbent dose, contact time, pH and initial metal ion concentration) on Cr(VI) adsorption were studied by batch adsorption experiments in order to maximize the Cr(VI) removal from simulated aqueous solutions. Maximum Cr(VI) removal achieved from the aqueous solution (500 ?g Cr/mL) at pH 1, contact time 2 hours, adsorbent dose 1 g/L, and 25 + 2oC temperature using CBP and AC was 234.9 mg/g and 268.7 mg/g respectively. The present work indicates nearly 88% efficiency of CBP in comparison to the AC. This shows that CBP can be used as an efficient adsorbent for the removal of Cr (VI). The batch adsorption data of both CBP and AC was well fitted in Langmuir Isotherm model.en_US
dc.identifier.accessionnoT00067
dc.identifier.citationNajar, Gh Nabi (2013) Removal of hexavalent chromium from aqueous solution using cone biomass of picea smithana as adsorbent.en_US
dc.identifier.urihttp://10.2.3.109/handle/32116/1637
dc.language.isoen_USen_US
dc.publisherCentral University of Punjaben_US
dc.subjectChromiumen_US
dc.subjectCone biomass of Picea smithianaen_US
dc.subjectAdsorptionen_US
dc.subjectLangmuir Isothermen_US
dc.subjectActivated charcoalen_US
dc.titleRemoval of hexavalent chromium from aqueous solution using cone biomass of picea smithana as adsorbenten_US
dc.typeMphil Dissertationen_US

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