![Fig. 1. Effect of PS dosage on (a) 2,4-D degradation and (b) PS degradation (after 720 min). Conditions: [2,4-D]<sub>0</sub>= 0.1 mM, [PS]<sub>0</sub>= 2, 5, 10, 20 mM, and [Fe<sup>2+</sup>]<sub>0</sub>= 2 mM.](http://ocean.kisti.re.kr/downfile/bibText/kssge1/JGSTB5/2021/v26n1/JGSTB5_2021_v26n1_54_f0001.png "Fig. 1. Effect of PS dosage on (a) 2,4-D degradation and (b) PS degradation (after 720 min). Conditions: [2,4-D]<sub>0</sub>= 0.1 mM, [PS]<sub>0</sub>= 2, 5, 10, 20 mM, and [Fe<sup>2+</sup>]<sub>0</sub>= 2 mM.")
![Fig. 2. Effect of Fe<sup>2+</sup> dosage on (a) 2,4-D degradation and (b) PS degradation (after 360 min). Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, and [Fe<sup>2+</sup>]<sub>0</sub> = 2, 4, 8, 10 mM.](http://ocean.kisti.re.kr/downfile/bibText/kssge1/JGSTB5/2021/v26n1/JGSTB5_2021_v26n1_54_f0002.png "Fig. 2. Effect of Fe<sup>2+</sup> dosage on (a) 2,4-D degradation and (b) PS degradation (after 360 min). Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, and [Fe<sup>2+</sup>]<sub>0</sub> = 2, 4, 8, 10 mM.")
![Fig. 3. Effect of 2,4-D re-spiking on the Fe<sup>2+</sup> activated PS oxidation (a) 2,4-D degradation, (b) PS degradation. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, and [Fe<sup>2+</sup>]<sub>0</sub> = 4 mM.](http://ocean.kisti.re.kr/downfile/bibText/kssge1/JGSTB5/2021/v26n1/JGSTB5_2021_v26n1_54_f0003.png "Fig. 3. Effect of 2,4-D re-spiking on the Fe<sup>2+</sup> activated PS oxidation (a) 2,4-D degradation, (b) PS degradation. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, and [Fe<sup>2+</sup>]<sub>0</sub> = 4 mM.")
![Fig. 4. Effects of the hydroxylamine (HA) adding times on (a)(b) 2,4-D degradation, (c)(d) persulfate degradation, (e)(f) Fe<sup>2+</sup> degradation. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, [Fe<sup>2+</sup>]<sub>0</sub> = 2 mM, and [HA]<sub>0</sub> = 0.2, 2, 20 mM.](http://ocean.kisti.re.kr/downfile/bibText/kssge1/JGSTB5/2021/v26n1/JGSTB5_2021_v26n1_54_f0004.png "Fig. 4. Effects of the hydroxylamine (HA) adding times on (a)(b) 2,4-D degradation, (c)(d) persulfate degradation, (e)(f) Fe<sup>2+</sup> degradation. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM, [PS]<sub>0</sub> = 10 mM, [Fe<sup>2+</sup>]<sub>0</sub> = 2 mM, and [HA]<sub>0</sub> = 0.2, 2, 20 mM.")
![Fig. 5. 2,4-D degradation for Fe<sup>2+</sup> activated persulfate oxidation in the presence of chelating agents (CA. EDTA. OA, and MA) (a) 2 mM chelating agents, (b) 20 mM chelating agents. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM; [PS]<sub>0</sub> = 10 mM; [Fe<sup>2+</sup>]<sub>0</sub> = 2 mM a nd [ch elating agent]<sub>0</sub>= 0.2, 2, 20mM.](http://ocean.kisti.re.kr/downfile/bibText/kssge1/JGSTB5/2021/v26n1/JGSTB5_2021_v26n1_54_f0005.png "Fig. 5. 2,4-D degradation for Fe<sup>2+</sup> activated persulfate oxidation in the presence of chelating agents (CA. EDTA. OA, and MA) (a) 2 mM chelating agents, (b) 20 mM chelating agents. Conditions: [2,4-D]<sub>0</sub> = 0.1 mM; [PS]<sub>0</sub> = 10 mM; [Fe<sup>2+</sup>]<sub>0</sub> = 2 mM a nd [ch elating agent]<sub>0</sub>= 0.2, 2, 20mM.")
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과황산을 이용한 2,4-D의 산화: 하이드록실아민, 킬레이트제의 영향
Persulfate Oxidation of 2,4-D: Effect of Hydroxylamine and Chelating Agent
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지하수토양환경 = Journal of soil and groundwater environment, v.26 no.1, 2021년, pp.54 - 64
최지연 (경북대학교 건설환경에너지공학부) , 윤나경 (경북대학교 건설환경에너지공학부) , 신원식 (경북대학교 건설환경에너지공학부)
Abstract
AI-Helper
The chemical warfare agents (CWAs) have been developed for offensive or defensive purposes and used as chemical weapons in war and terrorism. The CWAs are exposed to the natural environment, transported through the water system and then eventually contaminate soil and groundwater. Therefore, effecti...
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표/그림 (7)
참고문헌 (56)
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