Synthesis of Alumina-Modified Cigarette Soot Carbon As an Adsorbent for Efficient Arsenate Removal

High Resolution Image Download MS PowerPoint Slide In this study, the alumina (Al 2 O 3 ) modified cigarette soot carbon (CSC) (Al 2 O 3 /CSC) were fabricated via a simple one-step thermal method using CSC as template. The as-synthesized Al 2 O 3 /CSC were used as adsorbents for efficient arsenate (As(V)) elimination. Different weight ratios of Al 2 O 3 /CSC (Al 2 O 3:CSC = 1:1, 2:1, and 3:1) were fabricated, and the corresponding As(V) removal performance revealed that the synthesized 2Al 2 O 3 /CSC (mass ratio) possessed the best separation property and the highest adsorption capacity. A natural groundwater sample collected from Togtoh county, Inner Mongolia (China), with an initial concentration of 233 μg/L As(V) was applied to test the 2Al 2 O 3 /CSC application in actual groundwater purification. After processing with 2Al 2 O 3 /CSC, the As(V) concentration was reduced to 8.0 μg/L, which met the quality standard of World Health Organization (WHO). A regeneration test indicated that the 2Al 2 O 3 /CSC could be reused for at least six times without significant decrease in the adsorption capacity. The as-synthesized 2Al 2 O 3 /CSC with the maximum removal capacity of 96.9 mg/g for As(V) would be a promising material for the efficient removal of As(V) from groundwater with high As(V) concentrations in actual applications.