TY - JOUR ID - 14885 TI - Synthesis, Characterization And Mercury (II)  removal Using Poly(vinylacetate) Grafted Guar Gum JO - Advanced Materials Letters JA - AML LA - en SN - 0976-3961 Y1 - 2016 PY - 2016 VL - 7 IS - 7 SP - 573 EP - 578 KW - Guar gum KW - grafting KW - poly(vinylacetate) KW - Mercury KW - adsorption DO - 10.5185/amlett.2016.6006 N2 - Guar gum-graft-poly(vinylacetate) (GG-g-PVA) has been synthesized and evaluated for Hg(II) removal from synthetic Hg(II) solution. The optimum performance GG-g-PVA sample (G1) was synthesized using 0.25 g guar gum, 1.0 × 10 -2 M K2S2O8, 2.3 × 10-2 M ascorbic acid, 0.46 M vinyl acetate (VA), total reaction volume 25 mL, grafting time 1 h, and reaction temperature 35±0.5 °C. G1 has been extensively characterized using FTIR, SEM, TGA, and DSC studies. pH drift experiments have shown that G1 has pHzpc of 2.8 and it was most efficient in removing Hg(II) at pH 6. The kinetic studies indicated that the removal involved chemisorption in the rate determining step and the sorption equilibrium was attained in 4 h. High Qmax (100 mg g -1 ) of the copolymer indicated its suitability as a versatile and sustainable adsorbent for exceptionally high mercury recovery. UR - https://aml.iaamonline.org/article_14885.html L1 - https://aml.iaamonline.org/article_14885_420afd003dee3ebfde3a045205358ef8.pdf ER -