Synthesis and testing of polyacrylamide‐grafted waste sand derived composite adsorbent for water purification

Abstract

In this work, waste sand derived polyacrylamide grafted sand particles (PAGSPs) were developed as an effective adsorbent for the adsorption of organic and inorganic pollutants from water. The composite particles were characterized using FESEM, EDX, ATR-FTIR, XRD, TGA, and BET analyses. The FESEM results revealed the sizes of composite particles were in the micrometer range and BET analysis showed specific surface area of 10 m 2 g À1 with average pore radius of 1.22 nm. The adsorption isotherm and kinetics of dyes namely Methyl Orange (MO) and Quinoline Yellow (QY) and Ni(II) and Cr(VI) metal ions were analyzed. The adsorption capacities for dyes MO and QY were 32.25 and 55.55 mg g À1 and for metal ions Ni(II) and Cr(VI) were 75.18 and 125 mg g À1 respectively, at experimental pH conditions.Because of the excellent regeneration capacity, the functional polymer based composite particles exhibit great potential for the removal of any organic and inorganic pollutants from wastewater.