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A FIELD STUDY OF A NOVEL PERMEABLE-REACTIVE-BIOBARRIER TO REMEDIATE CHLORINATED HYDROCARBONS CONTAMINATED GROUNDWATER
Liu, C., X. Chen, S. Wang, Y. Luo, W. Du, Y. Yin, and H. Guo.
Environmental Pollution 351:124042(2024)
Filed Under: Demonstrations
Filed Under: Demonstrations
A novel three-layer permeable reactive barrier (PRB) material incorporating Fe0 and coconut shell biochar was field-scale tested at a chlorinated hydrocarbon (CH)-contaminated site. Monitoring data revealed conditions conducive to reductive dechlorination (low oxygen levels and a relatively neutral pH in the groundwater). The engineered PRB material consistently released organic carbon and iron, fostering CH-dechlorinating bacteria proliferation. Over 250 days, the pilot-scale PRB achieved CH removal efficiencies from 21.9%-99.6% for various CH compounds. Initially, CHs were predominantly eliminated through adsorption and iron-mediated reductive dechlorination, but microbial reductive dechlorination emerged as the predominant mechanism for sustained and long-term CH removal. See the introduction and section snippets at https://www.sciencedirect.com/science/article/abs/pii/S0269749124007565
Environmental Pollution 351:124042(2024)
Filed Under: Demonstrations
Filed Under: Demonstrations
A novel three-layer permeable reactive barrier (PRB) material incorporating Fe0 and coconut shell biochar was field-scale tested at a chlorinated hydrocarbon (CH)-contaminated site. Monitoring data revealed conditions conducive to reductive dechlorination (low oxygen levels and a relatively neutral pH in the groundwater). The engineered PRB material consistently released organic carbon and iron, fostering CH-dechlorinating bacteria proliferation. Over 250 days, the pilot-scale PRB achieved CH removal efficiencies from 21.9%-99.6% for various CH compounds. Initially, CHs were predominantly eliminated through adsorption and iron-mediated reductive dechlorination, but microbial reductive dechlorination emerged as the predominant mechanism for sustained and long-term CH removal. See the introduction and section snippets at https://www.sciencedirect.com/science/article/abs/pii/S0269749124007565
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