LAPSE:2020.0294
Published Article
LAPSE:2020.0294
Enhancing the Pore Properties and Adsorption Performance of Cocoa Pod Husk (CPH)-Derived Biochars via Post-Acid Treatment
Wen-Tien Tsai, Chien-Hung Hsu, Yu-Quan Lin, Chi-Hung Tsai, Wen-Shing Chen, Yao-Tsung Chang
March 12, 2020
In this work, the cocoa pod husk (CPH) was converted into biochar products at higher carbonization temperatures (i.e., 400−800 °C). The pore and chemical properties of the resulting biochars and its post-leaching biochars by acid washing, including specific surface area, total pore volume, pore size distribution, true density, and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) and Fourier Transform infrared spectroscopy (FTIR) were studied. Based on the pore properties, pyrolysis temperature at around 800 °C seemed to have the most profound impact on the pore development for producing biochar, where its Brunauer−Emmet−Teller (BET) surface area is 101 m2/g. More noticeably, more pores in the CPH-based biochar could be significantly created during the acid-washing, resulting in an increase of BET surface area from 101 to 342 m2/g. According to the data on the EDS and FTIR, the resulting biochars seemed to have oxygen-containing functional groups on the surface. Furthermore, the methylene blue (MB) adsorption performance of the optimal biochar product with maximal BET surface area was tested to fit its kinetics by the pseudo-second order model, showing a strong interaction between the biochar adsorbent and the cationic adsorbate.
Keywords
adsorption performance, biochar, cocoa pod husk, energy dispersive X-ray spectroscopy, Fourier Transform infrared spectroscopy, pore property
Subject
Suggested Citation
Tsai WT, Hsu CH, Lin YQ, Tsai CH, Chen WS, Chang YT. Enhancing the Pore Properties and Adsorption Performance of Cocoa Pod Husk (CPH)-Derived Biochars via Post-Acid Treatment. (2020). LAPSE:2020.0294
Author Affiliations
Tsai WT: Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
Hsu CH: Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
Lin YQ: Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
Tsai CH: Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
Chen WS: Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
Chang YT: Kaohsiung District Agricultural Research and Extension Station, Council of Agriculture, Pingtung 908, Taiwan
Journal Name
Processes
Volume
8
Issue
2
Article Number
E144
Year
2020
Publication Date
2020-01-22
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8020144, Publication Type: Journal Article
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LAPSE:2020.0294
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doi:10.3390/pr8020144
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Mar 12, 2020
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Mar 12, 2020
 
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Mar 12, 2020
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Original Submitter
Calvin Tsay
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