Bamboo derived hydrochar microspheres fabricated by acid-assisted hydrothermal carbonization

Shen Zhang; Kuichuan Sheng; Wei Yan; Jianglong Liu; E Shuang; Ming Yang; Ximing Zhang

doi:10.1016/j.chemosphere.2020.128093

Bamboo derived hydrochar microspheres fabricated by acid-assisted hydrothermal carbonization

Chemosphere. 2021 Jan:263:128093. doi: 10.1016/j.chemosphere.2020.128093. Epub 2020 Aug 25.

Authors

Shen Zhang¹, Kuichuan Sheng², Wei Yan³, Jianglong Liu⁴, E Shuang⁵, Ming Yang⁶, Ximing Zhang⁷

Affiliations

¹ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: szhang@zju.edu.cn.
² College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: kcsheng@zju.edu.cn.
³ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: zjuyw@zju.edu.cn.
⁴ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: longxing815@zju.edu.cn.
⁵ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: ehsuang@zju.edu.cn.
⁶ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: 18604273133@163.com.
⁷ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China. Electronic address: xzhang0223@163.com.

PMID: 33297089
DOI: 10.1016/j.chemosphere.2020.128093

Abstract

In this study, bamboo residues derived functional hydrochar microspheres have been fabricated by different acids-assisted hydrothermal carbonization including hydrochloric aicd, sulfuric acid or nitric acid.The energy-dispersive X-ray fluorescence spectroscopy and Fourier Transform Infrared spectroscopy analyses showed that sulfur- and nitrogen-containing functional groups were grafted on the surface of hydrochar microspheres, respectively. Elemental analysis indicates that the addition of acids has a significant influence on the hydrothermal reaction pathway and promotes the hydrolysis process. When the hydrothermal carbonization temperature is 220 °C, hydrochloric acid and nitric acid can effectively overcome the agglomeration of hydrochar microspheres and form single micron carbon sphere. Irregularly shaped hydrochar particles groups were formed during sulfuric acid-assisted hydrothermal treatment. The results indicate the viability of acid assisted hydrothermal carbonization to produce the functional hydrochar microsphere using bamboo residues.

Keywords: Bamboo residues; Functional groups; Hydrothermal carbonization; Microsphere.

MeSH terms

Carbon*
Hydrolysis
Microspheres
Nitrogen*
Temperature

Substances

Carbon
Nitrogen