PREPARATION OF EGG SHELL BIOCHAR AND ITS ADSORPTION PERFORMANCE FOR Cu(Ⅱ) AND ANILINE

LI Wei; ZHANG Ji; ZHU Xinyu; PAN Wenhao; ZHU Lei

doi:10.13205/j.hjgc.202305014

Volume 41 Issue 5

May 2023

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LI Wei, ZHANG Ji, ZHU Xinyu, PAN Wenhao, ZHU Lei. PREPARATION OF EGG SHELL BIOCHAR AND ITS ADSORPTION PERFORMANCE FOR Cu(Ⅱ) AND ANILINE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 98-106,201. doi: 10.13205/j.hjgc.202305014

Citation:

LI Wei, ZHANG Ji, ZHU Xinyu, PAN Wenhao, ZHU Lei. PREPARATION OF EGG SHELL BIOCHAR AND ITS ADSORPTION PERFORMANCE FOR Cu(Ⅱ) AND ANILINE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 98-106,201. doi: 10.13205/j.hjgc.202305014

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PREPARATION OF EGG SHELL BIOCHAR AND ITS ADSORPTION PERFORMANCE FOR Cu(Ⅱ) AND ANILINE

doi: 10.13205/j.hjgc.202305014

LI Wei^{1
,
,},
ZHANG Ji¹,
ZHU Xinyu²,
PAN Wenhao¹,
ZHU Lei³

1. School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. China Construction First Bureau Group North China Construction Co., Ltd, Tianjin 300450, China;
3. Shenyang Academy of Environmental Sciences, Shenyang 110016, China

Received Date: 2022-11-27

Abstract

Abstract

Biochar for adsorption has been used in water pollution control, it has enormous specific surface area and is economical and environment-friendly. In this paper, eggshell biochar was prepared and its physicochemical and structural characteristics were detected by scanning electron microscopy (SEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), and influencing factors and adsorption performance on Cu(Ⅱ) and aniline mixed pollutants was investigated by single-factor experiment. Meanwhile, the cycle regeneration stability of eggshell biochar was analyzed by magnet recovery, adsorption and desorption experiments. The experimental results showed that the eggshell biochar was successfully prepared at the pyrolysis temperature of 850 ℃, modified with 1% KMnO₄ for 12 h and the solid-liquid ratio of 1∶2. The modified biochar had good adsorption space structure and magnetic properties, and the specific surface area was significantly improved. pH of 6.0, 25 ℃, initial concentration of Cu(Ⅱ) and aniline of 20 mg/L and 10 mg/L, 15 g/L of eggshell biochar, and 24 h adsorption time were the best adsorption conditions for biochar. The maximum adsorption capacity of Cu(Ⅱ) and aniline was 1.33 mg/g and 0.64 mg/g and eggshell biochar had good recycling performance, after four cycles of regeneration, the removal rates of Cu(Ⅱ) and aniline were still kept at 82.47% and 70.08%, respectively. Eggshell biochar is a potential adsorption material.
- eggshell biochar,
- adsorption,
- Cu(Ⅱ),
- aniline,
- regeneration

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References(47)

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