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A review on the sustainability of thermal treatment for contaminated soils.
Environ Pollut 2019; 253:449-463EP

Abstract

Sustainable remediation is a goal in the remediation industry. Thermal treatment can remediate contaminated sites quickly and reliably, but its energy-intensive nature and potential to damage soil properties make it seemingly not sustainable. This review evaluates the potential for thermal treatment to become a sustainable remediation technology based on a comprehensive analysis of the scientific literature. The fundamentals, advantages, and limitations of single thermal treatment technologies are summarized. The compatibility and advantages of thermal treatment coupled with thermal, physicochemical, or biological technologies are reviewed. The results suggest that ingeniously designed coupled technologies can improve the availability and removal efficiency of contaminant, suppress the production of toxic byproduct, and reduce the required heating temperature and energy input. The sustainability of thermal treatment is then discussed from the perspectives of energy efficiency and land reuse. Approaches for improving energy efficiency include applying solar energy-based technologies, smoldering-based technologies, and coupled technologies. For land reuse, heating below 250 °C has negligible adverse impacts on most soil properties, and can increase nutrient availability and release dissolved organic carbon to support the growth of microorganisms and plants. Heating above 250 °C can significantly reduce soil organic matter and clay content, which decreases the soil cation exchange capacity and water holding capacity, and consequently damages the soil fertility. Some restoration strategies are also proposed for the recovery of soil quality. In addition, thermally remediated soil is considered to be a good candidate as an engineering medium for construction. This review concludes with an outlook of future research efforts that will further shift thermal treatment toward sustainable remediation.

Authors+Show Affiliations

Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: dingda@issas.ac.cn.Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. Electronic address: xsong@issas.ac.cn.Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. Electronic address: clwei@issas.ac.cn.Cascade Thermal, Gardner, MA 01440, USA. Electronic address: jlachance@cascade-env.com.

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

31325890

Citation

Ding, Da, et al. "A Review On the Sustainability of Thermal Treatment for Contaminated Soils." Environmental Pollution (Barking, Essex : 1987), vol. 253, 2019, pp. 449-463.
Ding D, Song X, Wei C, et al. A review on the sustainability of thermal treatment for contaminated soils. Environ Pollut. 2019;253:449-463.
Ding, D., Song, X., Wei, C., & LaChance, J. (2019). A review on the sustainability of thermal treatment for contaminated soils. Environmental Pollution (Barking, Essex : 1987), 253, pp. 449-463. doi:10.1016/j.envpol.2019.06.118.
Ding D, et al. A Review On the Sustainability of Thermal Treatment for Contaminated Soils. Environ Pollut. 2019;253:449-463. PubMed PMID: 31325890.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A review on the sustainability of thermal treatment for contaminated soils. AU - Ding,Da, AU - Song,Xin, AU - Wei,Changlong, AU - LaChance,John, Y1 - 2019/07/01/ PY - 2019/01/11/received PY - 2019/05/02/revised PY - 2019/06/28/accepted PY - 2019/7/22/pubmed PY - 2019/7/22/medline PY - 2019/7/21/entrez KW - Contaminated soil KW - Energy efficiency KW - Land reuse KW - Sustainability KW - Thermal treatment SP - 449 EP - 463 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ. Pollut. VL - 253 N2 - Sustainable remediation is a goal in the remediation industry. Thermal treatment can remediate contaminated sites quickly and reliably, but its energy-intensive nature and potential to damage soil properties make it seemingly not sustainable. This review evaluates the potential for thermal treatment to become a sustainable remediation technology based on a comprehensive analysis of the scientific literature. The fundamentals, advantages, and limitations of single thermal treatment technologies are summarized. The compatibility and advantages of thermal treatment coupled with thermal, physicochemical, or biological technologies are reviewed. The results suggest that ingeniously designed coupled technologies can improve the availability and removal efficiency of contaminant, suppress the production of toxic byproduct, and reduce the required heating temperature and energy input. The sustainability of thermal treatment is then discussed from the perspectives of energy efficiency and land reuse. Approaches for improving energy efficiency include applying solar energy-based technologies, smoldering-based technologies, and coupled technologies. For land reuse, heating below 250 °C has negligible adverse impacts on most soil properties, and can increase nutrient availability and release dissolved organic carbon to support the growth of microorganisms and plants. Heating above 250 °C can significantly reduce soil organic matter and clay content, which decreases the soil cation exchange capacity and water holding capacity, and consequently damages the soil fertility. Some restoration strategies are also proposed for the recovery of soil quality. In addition, thermally remediated soil is considered to be a good candidate as an engineering medium for construction. This review concludes with an outlook of future research efforts that will further shift thermal treatment toward sustainable remediation. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/31325890/A_review_on_the_sustainability_of_thermal_treatment_for_contaminated_soils L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(19)30200-3 DB - PRIME DP - Unbound Medicine ER -