• Mayank

The adsorption behavior of the polyamine functionalized mesoporous silica (MSPEI) is assessed against anionic dyes. The adsorbent characteristics of MS-PEI are compared with a monolayer platform comprising of 3-aminopropyltriethoxy silane (APTES) functionalized mesoporous silica (MS-APTES). A novel branched polyamine (polyethyleneimine, PEI) functionalized mesoporous silica (MS) adsorbent is developed via a facile “grafting-to” approach. X-ray spectroscopy and infrared spectroscopy verified the effective surface fictionalization of MS with monolayer and polymer. The adsorption behavior of the MS-PEI and MS-APTES toward anionic dyes is further evaluated by studying the effect of adsorbent dosage and pH. Langmuir and Freundlich isotherm models are employed to understand the adsorption mechanism. The obtained kinetic data support a pseudo-second order adsorption behavior for both monolayer and polymer functionalized MS.

surface modification, adsorbent, water mesoporous silica, branched polyamine, remediation.

"Effect of contact time, temperature and pH of dyes to be adsorbed on the mesoporous silica used for water treatment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 2, page no.1687-1692, February-2015, Available :http://www.jetir.org/papers/JETIR1701655.pdf

"Effect of contact time, temperature and pH of dyes to be adsorbed on the mesoporous silica used for water treatment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 2, page no. pp1687-1692, February-2015, Available at : http://www.jetir.org/papers/JETIR1701655.pdf