The Study on Kaolin/corn Stalk Composite Adsorbent Materials Prepared by H3PO4 Activation Method

Authors

  • Yanxia Liu

DOI:

https://doi.org/10.54097/ajst.v4i2.3871

Keywords:

Kaolin, Corn Straw, Zinc Chloride, Composite Adsorption Material.

Abstract

Using single factor method and orthogonal experiment,the study takes Kaolin and corn straw as raw materials and H3PO4 as activator and dips them in different activator concentration,different kaolin and corn straw mass ratio as well as different impregnation ratio under different conditions, and then carbonize them in low temperature by electric furnace, muff calcining to prepare kaolin/corn straw composite adsorption material.The adsorption capacity for methylene blue solution was characterized by T6 visible spectrophotometer,and automatic specific surface area and porosity analyzer was used to characterize the composite adsorption material under the optimal experimental conditions. The results show that the optimal experimental conditions are: Under the conditions of 25% Concentration of H3PO4 , 1:4 mass ratio of kaolin to corn stalk and 2.5:1 impregnation ratio, the adsorption value of  methylene blue on the composite adsorbent is 1.116mg/g, the specific surface area is 7.56m2·g-1 and the single specific surface area is 6.82m2·g-1. The microporous volume was 1.24×10-8mL·g-1 and the microporous area was 0.57m2·g-1,the results show that the pore structure of the composite adsorbent is not uniform, and there are a lot of micropores and a certain amount of mesopores in the samples.

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References

HE Longqiang, HU Peng, LIU Zhongyang. Preparation of composite super absorbent resin from kaolin and corn straw [J]. Jiangsu Agricultural Science 2017,45 (23): 296-298

LI Weixin, CAO Xiangyu, TIAN Junyang Study on the adsorption performance of mixed adsorbent of activated carbon and kaolin for methylene blue [J]. Leather and Chemical Industry, 2021, (01): 6-8+30

XIN He, ZHANG Na, CHAI Yangyang, GUO Qingqi. Preparation and characterization of thin skinned walnut shell based activated carbon [J]. Journal of Central South University of Forestry and Technology, 2021 (02): 176-183

WANG Zuoying. Supporting the comprehensive utilization of straw is an effective model to achieve targeted poverty alleviation [J] China Economic and Trade Guide, 2018 (10): 46

ZHU Ling, KANG Chunli, TIAN Tao, etal. Preparation of hickory shell corn straw mixed based activated carbon by zinc chloride method [J]. Science, Technology and Engineering, 2017, 17 (23): 115-119.

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Published

04-01-2023

How to Cite

Liu, Y. (2023). The Study on Kaolin/corn Stalk Composite Adsorbent Materials Prepared by H3PO4 Activation Method. Academic Journal of Science and Technology, 4(2), 9–12. https://doi.org/10.54097/ajst.v4i2.3871

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Section

Articles