高级氧化技术修复多环芳烃污染土壤研究进展

任天琳; 赵立坤; 陈超琪; 毛旭辉

doi:10.12153/j.issn.1674-991X.20230165

高级氧化技术修复多环芳烃污染土壤研究进展

doi: 10.12153/j.issn.1674-991X.20230165

武汉大学资源与环境科学学院

基金项目: 国家重点研发计划项目（2020YFC1807902）

详细信息

作者简介:
任天琳(1994—)，女，博士，主要从事高级氧化修复研究，tianlinren@whu.edu.cn

通讯作者:
毛旭辉(1976—)，男，教授，博士，主要从事水土环境修复研究，clab@whu.edu.cn

中图分类号: X53
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- 文章访问数: 384
- HTML全文浏览量: 125
- PDF下载量: 83
- 被引次数: 0
出版历程
- 收稿日期: 2023-02-27
- 录用日期: 2023-08-03
- 修回日期: 2023-05-10

Research progress in advanced oxidation technologies for remediation of polycyclic aromatic hydrocarbons contaminated soils

School of Resource and Environmental Sciences, Wuhan University

摘要

摘要:
多环芳烃（PAHs）是由2个或2个以上苯环组成的碳氢化合物，其致癌、致突变、致畸等特性对人类健康和生态环境产生不利的影响。由于PAHs具有低水溶性、高疏水性和难降解性等特点，导致PAHs污染土壤修复具有巨大挑战。高级氧化技术是处理PAHs污染土壤的有效手段。对高级氧化技术在PAHs污染土壤修复领域的研究进展进行了总结，对臭氧氧化、芬顿氧化和过硫酸盐氧化等高级氧化技术的优劣进行了分析；此外，探讨了表面活性剂在提升高级氧化效果方面的作用以及土壤理化环境条件对氧化过程的影响，分析了氧化过程对土壤微环境的潜在影响；最后，指出了高级氧化修复PAHs污染土壤的研究难点和未来方向。
- 多环芳烃(PAHs) /
- 焦化土壤 /
- 高级氧化 /
- 土壤污染治理
Abstract:
Polycyclic aromatic hydrocarbons (PAHs) are hydrocarbon compounds composed of two or more benzene rings. Their carcinogenic, mutagenic and teratogenic properties have adverse effects on human health and ecological environment. Due to the characteristics of low water solubility, high hydrophobicity and difficult degradation of PAHs, the remediation of PAHs-contaminated soil poses significant challenges. Advanced oxidation technologies have emerged as effective approaches for addressing PAHs contamination in soil. The research progress in the field of advanced oxidation technologies for the remediation of PAHs-contaminated soil was summarized, with a focus on the advantages and disadvantages analysis of ozone oxidation, Fenton oxidation, and persulfate oxidation. Furthermore, the role of surfactants in enhancing the effectiveness of advanced oxidation was explored and the influence of soil physicochemical conditions on the oxidation process was discussed. Potential impacts of the oxidation process on the soil microenvironment were also analyzed. Finally, the research difficulties and future directions of remediation of PAHS-contaminated soil by advanced oxidation were pointed out.
- polycyclic aromatic hydrocarbons (PAHs) /
- coking soil /
- advanced oxidation /
- remediation of polluted soil

HTML全文

图 1 高级氧化技术高效处理土壤PAHs影响因素

Figure 1. Factors affecting the efficient treatment of soil PAHs using advanced oxidation technology

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图 2 表面活性剂促进高级氧化降解机理（以过硫酸盐为例）^[83]

Figure 2. Mechanism of surfactant promoting AOP degradation (taking persulfate as an example)

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表 1 臭氧氧化对PAHs污染土壤修复研究进展

Table 1. Research progress in remediation of PAHs contaminated soil by ozone oxidation

污染物（浓度）	反应条件						降解率/%	数据来源
污染物（浓度）	臭氧浓度	催化剂/辅助材料	pH	温度/℃	水土比/（mL/g）	反应时间	降解率/%	数据来源
PAHs（600 μg/g）	12 mg/d	微生物	5.9	25	1/1	4 d	95	文献[18]
BaP（4 mg/kg）	0.5 g/h	微生物	7	25		5.5 h	56	文献[17]
BaP（18 mg/kg）	1.8 g/h	微生物	7	25		5.5 h	67	文献[17]
BaP（44 mg/kg）	5 g/h	微生物	7	25		5.5 h	68	文献[17]
BaP（20 mg/kg）	0.05 g/L			25	1/2	1 h	76	文献[19]
BaP（100 mg/kg）	73.7 mg/L		7	35	3/100	100 min	93.7	文献[20]

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表 2 芬顿氧化修复PAHs污染土壤实例

Table 2. Research progress in remediation of PAHs contaminated soil by Fenton oxidation

污染物（浓度）	反应条件						降解率/%	数据来源
污染物（浓度）	氧化剂浓度	催化剂/辅助材料	pH	温度/℃	水土比/（mL/g）	反应时间	降解率/%	数据来源
Phe（25 mg/kg）	5 mol/L H₂O₂	25 mg/kg针铁矿	7	25	3/1	7 h	89	文献[35]
BaP（0.1 mmol/kg）	14 mol/L H₂O₂， 23.4 mmol/L FeSO₄	天然土壤矿物	2~8	25	8/1	24 h	85	文献[23]
16种PAHs（222 g/kg）	2.8 mol/L H₂O₂， 0.1 mol/L FeSO₄	Tween 80 等 4种表面活性剂	7	25	17/20	49 d	60	文献[36]
23种PAHs	15% H₂O₂，5 mmol/L FeSO₄	乙醇	2-3	25	1/1	1 h	68	文献[30]

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表 3 过硫酸盐高级氧化对PAHs污染土壤修复研究进展

Table 3. Research progress in remediation of PAHs contaminated soil by advanced oxidation of persulfate

污染物（浓度）	反应条件						降解率/%	数据来源
污染物（浓度）	氧化剂浓度	催化剂/辅助材料	pH	温度/℃	水土比/（mL/g）	反应时间/d	降解率/%	数据来源
16种PAHs (0.81 g/kg)	7.2 mmol/L PDS		7	60	15/1	7	45.5	文献[72]
16种PAHs (1.36 g/kg)	10% PDS	10%磁铁矿	7	25	10/1	7	66	文献[73]
PAHs (16.98 mg/kg)	0.13 mol/L PDS	3.5 g mZVI	7	25	1/1	105	69.1	文献[48]
		3.5 g nZVI					82.2
		3.5 g C-nZVI					62.8
PAHs (340 mg/kg)	0.5 mol/L PDS	碱	10	25	3/1	3	55	文献[56]
			11				62
			12				65
PAHs (420 mg/kg)	0.2 mmol/L PMS	4.7 V/m电流	7	25	31/100	56	35	文献[74]
PAHs (1.1 g/kg)	0.04 mol/L PDS	1.2 mol/L H₂O₂	7.8	25	1/0.63	0.2	上层土壤6，下层土壤26	文献[54]
16种PAHs (335 mg/kg)	0.3 mol/L PDS	0.3 mol/L CA， 0.075 mol/L HPCD， 0.15 mol/L Fe²⁺	6	25	3/1	0.25	94	文献[68]

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