Comparative study of Cu2+ adsorption on a zeolite, a clay and a diatomite from Serbia

Surface silylation of mesoporous/macroporous diatomite (diatomaceous earth) and its function in Cu(II) adsorption: The effects of heating pretreatment

“…In contrast, much less efforts have been made to enhance the adsorption of heavy-metal ions on diatomite [25,26], even though the heavy-metal adsorption is associated with extensive demands for the remediation of heavy-metal pollution, noble metal recovery, and metal supporting for catalysis purposes. Surface silylation by using organosilane with metal-affinitive groups has been applied to several types of synthetic silicas to improve their heavy-metal adsorption, particularly in the cases of ordered mesoporous silica, such as MCM41 and SBA15 [27,28].…”

Sorption of chlorophenols on microporous minerals: mechanism and influence of metal cations, solution pH, and humic acid

“…Activated carbons, zeolites, biomaterials, clay minerals, and some industrial solid wastes have been used as sorbents for removal of ions and organics from water (Banat et al 2000;Kadirvelu et al 2000;Aksu and Yener 2001;Mohan and Singh 2002;Sljivic et al 2009;Yousef et al 2011;Quintelas et al 2012). Among these sorbent materials, activated carbons are the most widely used and exhibit good adsorption capacities for many organic pollutants due to their porous structures and large surface areas (Aksu and Yener 2001;Anbia and Ghaffari 2009;Nath and Bhakhar 2010;Zhou et al 2014).…”

Catalysts Based on Ukrainian Natural Sorbents for Low-Temperature Carbon Monoxide Oxidation Meant for Individual Respiratory Protective Devices

“…Чіткі піки на дифрактограмі зразка П-Тр(М-П) при 2θ > 29,396° також приписані кальциту. Автори робіт [12,13] фіксували в області 2θ от 20° до 25° широку смугу, віднесену ними від аморф-ного кремнезему. В той же час для досліджуваних зразків трепелу в області 2θ від 20° до 30° має місце перше і друге відбиття фаз α-трид, α-SiO 2 и кальциту, а також перше для фази β-крист.…”