| Enhancing remediation of PAH-contaminated soil through coupling electrical resistance heating using Na2S2O8 | |
| Han, Ziyu; Li, Shaohua; Yue, Yong; Tian, Yao; Wang, Shiyu; Qin, Zhirui; Ji, Longjie; Han, Denglun; Jiao, Wentao | |
| 2021-07 | |
| Source Publication | ENVIRONMENTAL RESEARCH
 |
| ISSN | 0013-9351 |
| Volume | 198Pages:- |
| Abstract | Soil polycyclic aromatic hydrocarbons (PAHs) contamination caused by factory relocations is a serious environmental issue across the world. Electrical resistance heating (ERH) and chemical oxidation are two promising in-situ methods for treating volatile and semi-volatile organic pollutants in contaminated soil. Coupling of ERH and chemical oxidation technologies to improve the remediation efficiency for PAH-contaminated soil was estimated in this study. PAH removal ratio in contaminated soils using ERH treatment were significantly negatively correlated with the boiling point of the pollutants (P = 0.002), and 21.63% (DBA high boiling point) to 71.53% (Nap low boiling point) of PAHs in the contaminated soil were removed in 120 min. With oxidant Na2S2O8 coupling, the removal ratio were increased as more oxidant was added. For one Phe, 35.90% was removed by ERH treatment and increased to 52.90% and 79.42% when 0.05 or 2.5 mmol/g oxidant was added, respectively. PAHs with higher boiling points had more obvious removal ratio, such as Bap, which increased from 23.50% to 85.47% when coupling ERH with Na2S2O8, and Phe which increased from 35.90% to 79.42%. Relationships between boiling points and PAH removal ratio changed with coupled oxidants, indicating a change of mechanism from volatilization to coupling effects of volatilization and oxidation with the introduction of Na2S2O8. A dynamic experiment showed that Na2S2O8 can accelerate 45.50% of the treatment process. The results of this research demonstrated a novel, cost-effective coupling approach for remediating soil contaminated by organic pollutants. |
| Department | 城市与区域生态国家重点实验室 |
| Keyword | PAHs Electrical resistance heating Thermal remediation Chemical oxidation |
| WOS Research Area | Environmental Sciences ; Public, Environmental & Occupational Health |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/45464 |
| Collection | 城市与区域生态国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.Sinochem Environm Holdings Co Ltd, Beijing 100070, Peoples R China 3.Huarui Agr Co Ltd, Liuba Ecoind Pk, Zhangye City 734500, Gansu, Peoples R China |
| Recommended Citation GB/T 7714 | Han, Ziyu,Li, Shaohua,Yue, Yong,et al. Enhancing remediation of PAH-contaminated soil through coupling electrical resistance heating using Na2S2O8[J]. ENVIRONMENTAL RESEARCH,2021,198:-. |
| APA | Han, Ziyu.,Li, Shaohua.,Yue, Yong.,Tian, Yao.,Wang, Shiyu.,...&Jiao, Wentao.(2021).Enhancing remediation of PAH-contaminated soil through coupling electrical resistance heating using Na2S2O8.ENVIRONMENTAL RESEARCH,198,-. |
| MLA | Han, Ziyu,et al."Enhancing remediation of PAH-contaminated soil through coupling electrical resistance heating using Na2S2O8".ENVIRONMENTAL RESEARCH 198(2021):-. |
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| Enhancing remediatio（4002KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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