High surface area rice husk-based activated carbon prepared by chemical activation with ZnCl2-CuCl2 composite activator

作者：Liu, Bin^*; Gu, Jie; Zhou, Jianbin

来源：Environmental Progress & Sustainable Energy, 2016, 35(1): 133-140.

DOI：10.1002/ep.12215

• rice husk
• activated carbon
• characterization
• composite activator

In this study, rice husks (RHs), an agriculture by-product, were used as precursor for the production of activated carbon by chemical activation with ZnCl2-CuCl2 composite activator. The effect of process variables, such as ZnCl2 concentration, CuCl2 concentration, activation temperature, and activation time, were investigated. The optimal process condition was obtained through orthogonal test. Then the morphology, pore structure, and surface chemistry of rice husk-based activated carbon (RAC) were analyzed. When using 5 mol/L ZnCl2 and 0.4 mol/L CuCl2 at the carbonization temperature of 500 degrees C for 1.5 h, the BET surface area of the produced activated carbon was as high as 1924 m(2)/g and the total pole volume reached 1.493 cm(3)/g. The surface area was strongly affected by ZnCl2 concentration and the subsequent activation temperature. RAC prepared under the optimum conditions had remarkable adsorptive properties and notable treatment effect for fuchsine.

• 出版日期2016-1
• 单位南京林业大学