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Soil Washing Coupled with the Magnetic Separation to Remediate the Soil Contaminated with Metal Wastes and TPH

자력선별과 토양세척법을 연계하여 금속폐기물과 TPH로 복합 오염된 토양 동시 정화

  • Han, Yikyeong (Department of Earth Environmental Sciences, Pukyong National University) ;
  • Lee, Minhee (Department of Earth Environmental Sciences, Pukyong National University) ;
  • Wang, Sookyun (Department of Energy Resources Engineering, Pukyong National University) ;
  • Choi, Wonwoo (Environmental Restoration Project Office, Korea Rural Community Corporation)
  • 한이경 (부경대학교 지구환경과학과) ;
  • 이민희 (부경대학교 지구환경과학과) ;
  • 왕수균 (부경대학교 에너지자원공학과) ;
  • 최원우 (한국농어촌공사 환경복원사업소)
  • Received : 2019.01.14
  • Accepted : 2019.02.08
  • Published : 2019.02.28

Abstract

Batch experiments for the soil washing coupled with the magnetic separation process were performed to remediate the soil contaminated with metal and oil wastes. The soil was seriously contaminated by Zn and TPH (total petroleum hydrocarbon), of which concentrations were 1743.3 mg/kg and 3558.9 mg/kg, respectively, and initial concentrations of Zn, Pb, Cu, and TPH were higher than the 2nd SPWL (soil pollution warning limit: remediation goal). The soil washing with acidic solution was performed to remove heavy metals from the soil, but Pb and Zn concentration of the soil maintained higher than the 2nd SWPL even after the soil washing with acidic solution. The 2nd soil washing was repeated to increase the Pb and Zn removal efficiency and the Zn and Pb removal efficiencies additionally increased by only 8 % and 5 %, respectively, by the 2nd soil washing (> 2nd SPWL). The small particle separation from the soil was conducted to decrease the initial concentration of heavy metals and to increase the washing effectiveness before the soil washing and 4.1 % of the soil were separated as small particles (< 0.075 mm in diameter). The small particle separation lowered down Zn and Pb concentrations of soil to 1256.3 mg/kg (27.9 % decrease) and 325.8 mg/kg (56.3 % decrease). However, the Zn concentration of soil without small particles still was higher than the 2nd SPWL even after the soil washing, suggesting that the additional process is necessary to lower Zn concentration to below the 2nd SPWL after the treatment process. As an alternative process, the magnetic separation process was performed for the soil and 16.4 % of soil mass were removed, because the soil contamination was originated from unreasonable dumping of metal wastes. The Zn and Pb concentrations of soil were lowered down to 637.2 mg/kg (63.4 % decrease) and 139.6 mg/kg (81.5 % decrease) by the magnetic separation, which were much higher than the removal efficiency of the soil washing and the particle separation. The 1st soil washing after the magnetic separation lowered concentration of both TPH and heavy metals to below 2nd SPWL, suggesting that the soil washing conjugated with the magnetic separation can be applied for the heavy metal and TPH contaminated soil including high content of metal wastes.

Keywords

soil washing;soil contamination;soil remediation;particle separation;magnetic separation;heavy metals;TPH

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Fig. 1. Research site (left) and the contaminated soil (the right top: with metal wastes; the right bottom: with metal wastesand oil wastes) for the study.

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Fig. 2. Removal efficiencies of heavy metals for 1st soil washing(SPWL: Soil Pollution Warning Limit).

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Fig. 3. Removal efficiencies of Zn and Pb for 1st and 2nd soil washing (SPWL: Soil Pollution Warning Limit).

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Fig. 4. Removal efficiencies of Pb and Zn for 1st soil washing after small particle separation (SPWL: Soil Pollution Warning Limit).

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Fig. 5. Removal efficiencies of Pb and Zn for 1st soil washing after magnetic separation (SPWL: Soil Pollution Warning Limit).

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Fig. 6. Removal efficiencies of TPH for 1st soil washing after magnetic separation (SPWL: Soil Pollution Warning Limit).

Table 1. Operating conditions for GC/FID and ICP/OES for analyses in this study

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Table 2. The properties and TPH/heavy metal concentration of soil used in this study

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Table 3. Heavy metal and TPH concentration of soil before/after particle separation and magnetic separation process

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Acknowledgement

Supported by : 부경대학교

References

  1. Abayneh, A.B. and Quanyuan, C. (2018) Surfactantenhanced soil washing for removal of petroleum hydrocarbons from contaminated soils: A Review. Pedosphere, v.28(3), p.383-410. https://doi.org/10.1016/S1002-0160(18)60027-X
  2. Chon, C.M., Park, J.S., Kim, J.G. and Lee, Y.S. (2010) Relationship between physicochemical properties, heavy metal contents and magnetic susceptibility of soils. J. Miner. Soc. Kor., v.23, p.281-295.
  3. David, H., Emmanuel, M., van Hullebusch, E.D. and Oturan, M. A. (2015) Combination of surfactant enhanced soil washing and electro-Fenton process for the treatment of soils contaminated by petroleum hydrocarbons. J. Environ. Manag., v.153, p.40-47. https://doi.org/10.1016/j.jenvman.2015.01.037
  4. Dermont, D., Bergeron, M., Mercier, G. and Richer-Lafleche, M. (2008) Soil washing for metal removal: A review of physical/chemical technologies and field applications. J. Hazard. Mater., v.152, p.1-31. https://doi.org/10.1016/j.jhazmat.2007.10.043
  5. Enkhzaya, C.S. (2014) Application of soil washing process for the remediation of heavy metal contaminated soil around the Jang Hang smelter. MsD. Thesis, Pukyong National University, Korea.
  6. EPA (1998) In situ remediation technology: In situ chemical oxidation. EPA/542/R-98/008.
  7. Evanko, C.R. and Dzombak, D.A. (1997), Remediation of metals-contaminated soils and groundwater. GWRTAC Technology Evaluation Report, p.28.
  8. Heo, H. and Lee, M. (2015) Surfactant-enhanced Soil Washing using Tween and Tergitol Series Surfactants for Kuwait Soil Heavily Contaminated with Crude Oil. J. Soil Groundw. Environ, v.20(5), p.26-33. https://doi.org/10.7857/JSGE.2015.20.5.026
  9. KEITI (Korea Environmental Industry & Technology Institute) (2015) The construction of inventory for soil and groundwater cleanup technologies, Annual Report, Ministry of Environment, Korea.
  10. Kim, I. and Lee, M. (2012) Pilot scale feasibility study for in-situ chemical oxidation using $H_2O_2$ solution conjugated with biodegradation to remediate a diesel contaminated site. J. Hazard. Mater., v.241-242, p.173-181. https://doi.org/10.1016/j.jhazmat.2012.09.022
  11. Lee, M, Chung, S.Y., Kang, D.W., Choi, S.L. and Kim, M.C. (2002) Surfactant enhanced in-situ soil flushing pilot test for the soil and groundwater remediation in an oil contaminated site. J. Soil Groundw. Environ., v.7(4), p.77-86.
  12. Lee, M. and Han, Y.K. (2018) Report on the results of the application test on Busan OO site soil investigation site, Pukyoung National University, Korea.
  13. Li, Y., Liao, X. and Li, W. (2019) Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration J. Clean. Prod., v.212, p.81-89. https://doi.org/10.1016/j.jclepro.2018.11.294
  14. Liao, X., Li, Y. and Yan, X. (2016) Removal of heavy metals and arsenic from a co-contaminated soil by sieving combined with washing process. J. Environ. Sci., v.41, p.202-210. https://doi.org/10.1016/j.jes.2015.06.017
  15. Maja P. and Domen L. (2010) Using electrocoagulation for metal and chelant separation from washing solution after EDTA leaching of Pb, Zn and Cd contaminated soil. J. Hazard. Mater., v.174(1-3), p.670-678. https://doi.org/10.1016/j.jhazmat.2009.09.103
  16. MOE (Ministry of Environment) (2010) The standardization of the soil cleanup industry and the plan to obtain its international competitiveness, Final Report, Ministry of Environment, Korea.
  17. MOE (Ministry of Environment) (2017) Notification 2017-22, The soil environmental conservation law, Korea.
  18. Nan F., Hossein G., Gabriel B. and Jean-Claude J.B. (2016) Removal of phyto-accessible copper from contaminated soils using zero valent iron amendment and magnetic separation methods: Assessment of residual toxicity using plant and $MetPLATE^{TM}$ studies. Environ. Pollu., v.219, p.9-18. https://doi.org/10.1016/j.envpol.2016.09.050
  19. Ricardo, D., Alam, G., Raquel F. and Pupo, N. (2010) Soil remediation using a coupled process: soil washing with surfactant followed by photo-Fenton oxidation. J. Hazard. Mater., v.174, p.770-775. https://doi.org/10.1016/j.jhazmat.2009.09.118
  20. Rosas, J.M., Vicente, F., Santos, A., Romero, A. (2013) Soil remediation using soil washing followed by Fenton oxidation. Chem. Eng. J., v.220, p.125-132. https://doi.org/10.1016/j.cej.2012.11.137
  21. Sari, G.L., Trihadiningrum, Y., Wulandari, D.A., Pandebesie, E.S. and Warmadewanthi, I.D.A.A. (2018) Compost humic acid-like isolates from composting process as bio-based surfactant: Properties and feasibility to solubilize hydrocarbon from crude oil contaminated soil. J. Environ. Manag., v.225, p 356-363. https://doi.org/10.1016/j.jenvman.2018.08.010
  22. Sierra, C., Martinez-Blancob, D., Blanco, J.A. and Gallegoa, J.R. (2014) Optimization of magnetic separation: A case study for soil washing at a heavy metals polluted site. Chemosphere, v.107, p.290-296. https://doi.org/10.1016/j.chemosphere.2013.12.063
  23. Silva-Castro, G.A., Uad, I., Rodrigues-Calvo, A., Gonzalez-Lopez, J. and Calvo, C. (2015) Response of autochthonous microbiota of diesel polluted soils to land-farming treatments. Environ. Res., v.137, p.49-58. https://doi.org/10.1016/j.envres.2014.11.009
  24. Wang, S., Kuo, Y., Hong, A., Chang, Y. and Kao, C. (2016) Bioremediation of diesel and lubricant oil-contaminated soils using enhanced landfarming system. Chemosphere, v.164, p.558-567. https://doi.org/10.1016/j.chemosphere.2016.08.128