Removal of Cr (VI) from Aqueous Solution Using <i>Camellia oleifera</i> Abel Shells

Abstract

The use of camellia oleifera abel shells as biosorbent has been successfully demonstrated in the removal of Cr (VI) from aqueous solution. The effects of different parameters, such as, contact time, initial concentration of Cr (VI), pH and temperature on Cr (VI) adsorption were investigated. The results showed that the maximum uptake of Cr (VI) was up to 190.69 mg/g at a pH value of around 1.0, under the initial Cr (VI) concentration of 400mg/L and at the temperature of 298 K. The adsorption kinetics could be described by pseudo-first order and pseudo-second order kinetics models.

Preparation and characterization of Camellia oleifera nut shell-based bioadsorbent and its application for heavy metals removal

“…However, there have been few reports of using non-activated CONS for heavy metals removal. Only Guo et al (2016) and Lu et al (2013) have reported to use CONS remove Pb(II) and Cr(VI).…”

Preparation and characterization of biosorbents and copper sequestration from simulated wastewater

“…The use of these residues has, in general, given the process the more common name of biosorption with the adsorbent nominated as biosorbent. Various biosorbents developed from agrowastes and used for heavy metals removal include rice straw (Gao et al 2008), free algal biomass for biosorption of copper and zinc (Wan Maznah et al 2012), removal of copper and zinc sunflower (Helianthus annuus), Chinese cabbage (Brassica campestris), cattail (Typha latifolia), and reed (Phragmites communis) as reported by Yeh et al (2011), biomass of Desmostachy bipannata (Kush, a religious plant of Hindus) (Kour et al 2012), peanut shell (Witek-Krowiak et al 2011), Peganum harmala seeds as a biosorbent to remove lead, zinc and cadmium ions from contaminated water (Zamani et al 2013), seaweed (Basha et al 2008), wood and bark (Mohan et al 2007), tea waste (Malkoc and Nuhoglu 2007), maize corn cob, jatropha oil cake, sugarcane bagasse (Dos Santos et al 2011), raw and treated Agave salmiana bagasse (Velazquez-Jimenez et al 2013), sawdust (Hashem et al 2013;Memon et al 2005), rice husk (Kumar and Bandyopadhyay 2006), marine algal biomass, bagasse fly ash (Rameshraja et al 2012), wool, olive cake, sawdust, pine needles, Aleppo pine adsorbent (Benyoucef and Amrani 2011), almond shells, impregnated palm shell activated carbon with polyethyleneimine (Owlad et al 2010), Camellia oleifera Abel shells (Lu et al 2013), cactus leaves, and charcoal and pine bark (Al-Asheh et al 2000).…”