ADSORPTION PERFORMANCE OF 2,4-DICHLOROPHENOL ON MICROPOROUS-RICH BIOCHAR

YE Shunyun; DENG Hua; HU Lening; ZHANG Junyu; HUANG Ziwei; WANG Wei; HUANG Rui; FU Jiahui

doi:10.13205/j.hjgc.202408004

Volume 42 Issue 8

Aug. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(8): 25-34

YE Shunyun, DENG Hua, HU Lening, ZHANG Junyu, HUANG Ziwei, WANG Wei, HUANG Rui, FU Jiahui. ADSORPTION PERFORMANCE OF 2,4-DICHLOROPHENOL ON MICROPOROUS-RICH BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(8): 25-34. doi: 10.13205/j.hjgc.202408004

Citation:

YE Shunyun, DENG Hua, HU Lening, ZHANG Junyu, HUANG Ziwei, WANG Wei, HUANG Rui, FU Jiahui. ADSORPTION PERFORMANCE OF 2,4-DICHLOROPHENOL ON MICROPOROUS-RICH BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(8): 25-34. doi: 10.13205/j.hjgc.202408004

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ADSORPTION PERFORMANCE OF 2,4-DICHLOROPHENOL ON MICROPOROUS-RICH BIOCHAR

doi: 10.13205/j.hjgc.202408004

YE Shunyun^1,2,
DENG Hua^{1,2
,
,},
HU Lening^1,2,
ZHANG Junyu^1,2,
HUANG Ziwei^1,2,
WANG Wei^1,2,
HUANG Rui^1,2,
FU Jiahui^1,2

1. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Normal University, Guilin 541006, China;
2. College of Environment and Resources, Guangxi Normal University, Guilin 541006, China

Received Date: 2023-04-28
Available Online: 2024-12-02

Abstract

Abstract

In this paper, microporous-rich biomass charcoal (referred to as FWB) was prepared using waste fir wood chips as the raw material, and 2,4-dichlorophenol (2,4-DCP) was used as the target pollutant. The effects of different adsorption conditions on the adsorption performance of 2,4-DCP by FWB were studied, and the kinetic models (quasi-primary kinetics, quasi-secondary kinetics and intraparticle diffusion models), isothermal adsorption models (Langmuir, Freundlich and Temkin models) and the adsorption thermodynamic model (Van’t Hoff model) were used to fit the adsorption process and analyze its adsorption characteristics. The basic characteristics and adsorption mechanism of FWB were analyzed by SEM-EDS, BET, FTIR, XRD and XPS. The results showed that the adsorption process followed the quasi-secondary kinetic model and the Freundlich model, i.e. the adsorption of 2,4-DCP by FWB was based on the chemisorption of multilayers, with a maximum adsorption capacity of 138.05 mg/g. The adsorption process was a spontaneous heat absorption process. The biochar possesses a high specific surface area (326.770 m²/g), and an average pore size of 1.960. The total pore volume is 0.219 mL/g, and the micro-pore volume (0.178 mL/g) accounts for 81.279% of the total pore volume.
- fir wood chips,
- microporous-rich biochar,
- 2,4-dichlorophenol,
- isothermal adsorption,
- adsorption kinetics

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References(40)

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