TY - JOUR
T1 - Supercritical fluid remediation for soil contaminants
T2 - Mechanisms, parameter optimization and pilot systems
AU - Chen, Lin
AU - Hasanov, Jahongir
AU - Chen, Jiaxiang
AU - Feng, Yongchang
AU - Kanda, Yuki
AU - Komiya, Atsuki
N1 - Funding Information:
The support from the NSFC-JSPS International Collaboration Fund (No. 51961145201 ), the National Natural Science Foundation of China (No. 52076207 ; No. 52006221 ; No. 52106033 ), the Chinese Academy of Sciences Key Research Program of Frontier Sciences (No. ZDBS-LY-JSC018 ) and CAS start-up fund are gratefully acknowledged by the authors. The authors would like to acknowledge the members of the Institute of Engineering Thermophysics, Chinese Academy of Sciences and members of Laboratory of Chemistry of Proteins and Peptides, Institute of Bioorganic Chemistry of Academy of Sciences of Uzbekistan. The supports from students in National College Students' Science and Technology Innovation Project (IET-CAS), Yongfang Yang, Guangyu Wei (Dalian University of Technology, China), Yuzhuo Zhou, Rui Zhang (North China Electric Power University (Baoding), China) are also acknowledged.
Funding Information:
The support from the NSFC-JSPS International Collaboration Fund (No. 51961145201), the National Natural Science Foundation of China (No. 52076207; No. 52006221; No. 52106033), the Chinese Academy of Sciences Key Research Program of Frontier Sciences (No. ZDBS-LY-JSC018) and CAS start-up fund are gratefully acknowledged by the authors. The authors would like to acknowledge the members of the Institute of Engineering Thermophysics, Chinese Academy of Sciences and members of Laboratory of Chemistry of Proteins and Peptides, Institute of Bioorganic Chemistry of Academy of Sciences of Uzbekistan. The supports from students in National College Students' Science and Technology Innovation Project (IET-CAS), Yongfang Yang, Guangyu Wei (Dalian University of Technology, China), Yuzhuo Zhou, Rui Zhang (North China Electric Power University (Baoding), China) are also acknowledged.
Funding Information:
For the determination of Hexabromo Cyclododecane remediation process parameters, the China 2018 project has been conducted by the support of National Natural Science Foundation of China (20977094), and the Science and Technology Development Plan Project of Weifang (2014ZJ1055) [231] , in which study small scale prototype has been utilized for the continuous flow remediation.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/10
Y1 - 2022/10
N2 - Soil contamination is one of the major sustainable development issues which requires increasing efforts from multidisciplinary collaborations. In recent years, supercritical fluid remediation has been proposed as one “green technology” that is suitable with various types of contaminants without destroying the soil nature. Supercritical fluid process employs the high solubility and zero surface tension of supercritical states as well as the large solubility variations in the supercritical region for high efficiency separation. In this analysis, characteristics of soil contaminants in representative “matrix” conditions and related effects on remediation process with supercritical fluid technology are analyzed. Mechanisms and procedures of supercritical remediation technology are summarized and compared for different contaminants. Operation conditions, flow design, processing time and the entrainer applications in supercritical fluid remediation systems are shown to act more as coupled parameter groups rather than single-parameter controlled system. From a summary of existing remediation prototypes, a remediation efficiency around 80 % were shown. It is recommended that large-scale remediation trials be operated and optimized soon.
AB - Soil contamination is one of the major sustainable development issues which requires increasing efforts from multidisciplinary collaborations. In recent years, supercritical fluid remediation has been proposed as one “green technology” that is suitable with various types of contaminants without destroying the soil nature. Supercritical fluid process employs the high solubility and zero surface tension of supercritical states as well as the large solubility variations in the supercritical region for high efficiency separation. In this analysis, characteristics of soil contaminants in representative “matrix” conditions and related effects on remediation process with supercritical fluid technology are analyzed. Mechanisms and procedures of supercritical remediation technology are summarized and compared for different contaminants. Operation conditions, flow design, processing time and the entrainer applications in supercritical fluid remediation systems are shown to act more as coupled parameter groups rather than single-parameter controlled system. From a summary of existing remediation prototypes, a remediation efficiency around 80 % were shown. It is recommended that large-scale remediation trials be operated and optimized soon.
KW - Contaminants
KW - Parameter optimization
KW - Pilot system
KW - Soil remediation
KW - Supercritical fluid
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U2 - 10.1016/j.supflu.2022.105718
DO - 10.1016/j.supflu.2022.105718
M3 - Article
AN - SCOPUS:85136602628
SN - 0896-8446
VL - 189
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
M1 - 105718
ER -