EFFECT OF PYROLYSIS TEMPERATURE ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF BAMBOO-BASED BIOCHAR

ZHANG Zhuo-ran; LIU Qing-hua; WANG Wei-gang; RONG Jing; CAO Rui-jie; LUO Wen-tao; LIU Chao; WANG Ya-yi

doi:10.13205/j.hjgc.202111012

Volume 39 Issue 11

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(11): 96-102,126

ZHANG Zhuo-ran, LIU Qing-hua, WANG Wei-gang, RONG Jing, CAO Rui-jie, LUO Wen-tao, LIU Chao, WANG Ya-yi. EFFECT OF PYROLYSIS TEMPERATURE ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF BAMBOO-BASED BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 96-102,126. doi: 10.13205/j.hjgc.202111012

Citation:

ZHANG Zhuo-ran, LIU Qing-hua, WANG Wei-gang, RONG Jing, CAO Rui-jie, LUO Wen-tao, LIU Chao, WANG Ya-yi. EFFECT OF PYROLYSIS TEMPERATURE ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF BAMBOO-BASED BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 96-102,126. doi: 10.13205/j.hjgc.202111012

Citation:

ZHANG Zhuo-ran, LIU Qing-hua, WANG Wei-gang, RONG Jing, CAO Rui-jie, LUO Wen-tao, LIU Chao, WANG Ya-yi. EFFECT OF PYROLYSIS TEMPERATURE ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF BAMBOO-BASED BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 96-102,126. doi: 10.13205/j.hjgc.202111012

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EFFECT OF PYROLYSIS TEMPERATURE ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF BAMBOO-BASED BIOCHAR

doi: 10.13205/j.hjgc.202111012

1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Shanghai Huanyun Renewable Energy Co., Ltd, Shanghai 200092, China

Received Date: 2021-08-04
Available Online: 2022-01-26

Abstract

Abstract

As a new environmental functional material, biochar showed application prospects in environmental pollution remediation, soil improvement, greenhouse gas emission reduction, and enhanced biological nitrogen removal from wastewater. Biochars were prepared from bamboo powder at different pyrolysis temperatures, and their electron exchange capacity, surface functional groups, and elemental composition were characterized to explore the effect of pyrolysis temperatures on the physicochemical characteristics of bamboo-based biochar. The results showed that while the pyrolysis temperature increased from 300℃ to 700℃, the electron donating capacity (EDC) of biochars generally increased first and then decreased. The highest EDC was obtained in the biochars prepared at 300℃ and 400℃ with the value of 0.33 e^-/g Biochar and 0.35 e^-/g Biochar, respectively, had higher potential in improving biological nitrogen removal; and the lowest EDC was obtained in the biochars prepared at 600℃ with the value of 0.07 e^-/g Biochar. Accordingly, the average oxidation degree C_ox calculated from the elemental content was corresponding to the results of EDC. With the increase of pyrolysis temperature, the C_ox of biochars changed from negative to positive. When the pyrolysis temperature was 300℃ or 400℃, the C_ox of the biochars was negative, indicating that the biochars was more reductive and less oxidizable than those prepared at 500~700℃, i.e., higher electron donating capacity (EDC) and lower electron accepting capacity (EAC). In addition, Fourier transform infrared spectroscopy showed that the hydroxyl content of the biochars was highest at 300℃ and 400℃, which was consistent with their highest EDC.
- bamboo-based biochar,
- pyrolysis temperature,
- electron exchange capacity

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References(35)

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