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JIA Wenbao; HE Yanquan; LING Yongsheng; HEI Daqian; SHAN Qing; ZHANG Yan

doi:10.11889/j.1000-3436.2014.rrj.32.050301

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更新时间：2021-12-01

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- Journal of Radiation Research and Radiation Processing Vol. 32, Issue 5, Pages: 7-050301(2014)
- 作者机构：
  
  1. （南京航空航天大学材料学院核科学与工程系）,南京,211100
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- DOI：10.11889/j.1000-3436.2014.rrj.32.050301
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JIA Wenbao, HE Yanquan, LING Yongsheng, et al. [J]. Journal of Radiation Research and Radiation Processing 32(5):7-050301(2014)
DOI：

JIA Wenbao, HE Yanquan, LING Yongsheng, et al. [J]. Journal of Radiation Research and Radiation Processing 32(5):7-050301(2014) DOI： 10.11889/j.1000-3436.2014.rrj.32.050301.

摘要

采用60Co γ-射线辐射降解环己丁酸，通过对辐照前后化学需氧量(CODCr)与pH值变化的分析，研究了不同环己丁酸浓度、初始pH值、H2O2初始浓度和吸收剂量对环己丁酸的辐射降解效果的影响。结果表明：在相同剂量条件下，环己丁酸初始浓度越高，CODCr去除率越低；酸性条件更利于溶液中CODCr的去除；H2O2与γ-射线辐照之间具有显著的协同效应，H2O2初始浓度为1 mmol?L–1时，其对40 mg?L–1环己丁酸的辐射降解的促进效果达到最好。环己丁酸水溶液的CODCr浓度变化服从一级反应动力学方程。

Abstract

A series of experiments on degradation of cyclohexanebutyric acid were performed by 60Co γ-ray irradiation with a dose rate of 0.65 kGy?h–1. The effects of cyclohexanolbutyric acid concentration, H2O2 concentration, initial pH value, and absorbed dose on irradiation degradation efficiency were studied by analyzing the change of chemical oxygen demand (CODCr) and pH value before and after degradation. The results indicated that the higher the initial concentration of cyclohexanolbutyric acid was, the lower the CODCr removal became at the same dose. And the acidic condition was more helpful to the removal of CODCr than neutral and alkaline conditions. Moreover, H2O2 and γ-ray irradiation had a significant synergistic effect, and the irradiation degradation had a promoting effect when the initial concentration of H2O2 was 1 mmol?L–1. The change of CODCr concentration follows the first order reaction kinetics equation.Cited

关键词

γ-射线辐射降解环己丁酸动力学分析

Keywords

γ-raysIrradiation degradationCyclohexanebutyric acidKinetic analysis

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Zhejiang Institute of Application Energy and Nuclear Technology

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DOI：10.11889/j.1000-3436.2014.rrj.32.050301

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