The rmodyna mic of the Co (II) ad sorption onto silica aerogel-a ctivated car bon nano composites from aqueous solutions

The presence of heavy metals in aqueous so lution beyond certain limit creates serious threat to the environment due to their non-degradability and toxicity. Cobalt is prese nt in mining, electronics, metallurgical, electr oplating and paint industries. Cobalt as a pollu tant has man y toxic effects such as imparting neurotoxico logical dis orders, genotoxicity, carcinogenicity, cardiomy opathy and bronchial asthma [۱]. Nano composite in this study consists of tw o phases of silica aer ogel and ac ivated carbon. active carbon has h igh surface area, poro us structure and functional group has been the most popular and widely used adso rbent in water treatment technolog y all over the world [۲]. Aerogel is composed of a series of particles in the nanometer range in a netw ork With three-dimensional arrang ement and have covalent bonds together. This material is very porous and very lar ge specific surface [۳]. The objecti ve of this study was to investigate the possible use of silica aerogel-activated carbon nan o composit es as an alt ernative ads orbent mate rial for the removal of C o۲+ cations from aqueo us solutions.

کلیدواژه ها:

Co (II) ، Nano composite ، isotherm ، Adsorption ، silica aerogel