OPTIMIZATION OF ELECTROCHEMICAL OXIDATION FOR TREATING CHLOROBENZENE WASTE GAS BY RESPONSE SURFACE METHODOLOGY

MIAO Luyuan; JIANG Ye; YAN Tingchun; SHEN Yuexi; WANG Siyi; QUAN Yue

doi:10.13205/j.hjgc.202408012

Volume 42 Issue 8

Aug. 2024

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MIAO Luyuan, JIANG Ye, YAN Tingchun, SHEN Yuexi, WANG Siyi, QUAN Yue. OPTIMIZATION OF ELECTROCHEMICAL OXIDATION FOR TREATING CHLOROBENZENE WASTE GAS BY RESPONSE SURFACE METHODOLOGY[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(8): 97-104. doi: 10.13205/j.hjgc.202408012

Citation:

MIAO Luyuan, JIANG Ye, YAN Tingchun, SHEN Yuexi, WANG Siyi, QUAN Yue. OPTIMIZATION OF ELECTROCHEMICAL OXIDATION FOR TREATING CHLOROBENZENE WASTE GAS BY RESPONSE SURFACE METHODOLOGY[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(8): 97-104. doi: 10.13205/j.hjgc.202408012

Citation:

MIAO Luyuan, JIANG Ye, YAN Tingchun, SHEN Yuexi, WANG Siyi, QUAN Yue. OPTIMIZATION OF ELECTROCHEMICAL OXIDATION FOR TREATING CHLOROBENZENE WASTE GAS BY RESPONSE SURFACE METHODOLOGY[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(8): 97-104. doi: 10.13205/j.hjgc.202408012

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OPTIMIZATION OF ELECTROCHEMICAL OXIDATION FOR TREATING CHLOROBENZENE WASTE GAS BY RESPONSE SURFACE METHODOLOGY

doi: 10.13205/j.hjgc.202408012

1. School of Agricultural, Yanbian University, Yanji 133002, China;
2. Qiqihar Fularji District Ecological and Environmental Bureau, Qiqihar 161000, China;
3. School of Geography and Ocean Sciences, Yanbian University, Hunchun 133300, China

Received Date: 2023-11-01
Available Online: 2024-12-02

Abstract

Abstract

Chlorinated volatile organic compounds (Cl-VOCs) such as chlorobenzenes, are difficult to remove from the environment because they are hydrophobic, volatile, and biotoxic. In this study, an electrochemical oxidation system was constructed to investigate the effect of a single factor, current density, electrode distance, and electrolyte concentration on the removal of chlorobenzene gas, using response surface methodology (RSM), and a prediction model by Design-Expert 10.0.1 software was established to optimize the reaction condition. The results of one-factor experiments showed that when treating 2.90 g/m³ chlorobenzene gas with 0.40 L/min flow rate, Ti/Ti₄O₇ as anode, stainless steel wire mesh as cathode, 0.15 mol/L NaCl electrolyte, 10.0 mA/cm² current density and 4.0 cm electrode distance, and then the average removal efficiency (RE), efficiency capacity (EC) and energy consumption (E_sp) was 57.99%, 20.18 g/(m³·h) and 190.2 kW·h/kg, respectively. The results of RSM showed that current density had significant effect on RE, while the electrolyte concentration had the least effect; electrolyte concentration and current density had the biggest interaction effect on RE; the optimal experimental conditions were as follows: 0.149 mol/L NaCl, 18.11 mA/cm² current density, 3.804 cm electrode distance, and under these conditions, the RE achieved 66.43%; it also showed that the regression model reached significant level, and the validation results was in agreement with the predicted results, which proved the feasibility of the model in treating actual waste gas.
- response surface methodology,
- chlorobenzene gas,
- electrochemical oxidation

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References(31)

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