Evaluation of MNA in A Chlorinated Solvents-Contaminated Aquifer Using Reactive Transport Modeling Coupled with Isotopic Fractionation Analysis
نویسندگان
چکیده
Groundwater contamination by chlorinated hydrocarbons is a worldwide problem that poses important challenges in remediation processes. In Italy, the Legislative Decree 152/06 defines water quality limits to be obtained during cleanup process. situ bioremediation techniques are becoming increasingly due their affordability and, under right conditions, because they can more effective than conventional methodologies. initial feasibility study phase, numerical modeling supports reliability of each technique. Two different codes, BIOCHLOR and PHREEQC were discussed compared assuming field conditions. Isotopic Fractionation-Reactive Transport Models then developed one synthetic simple case. From results, two codes agreement also able demonstrate Monitored Natural Attenuation processes occurring at dismissed site located Italy. Finally, model was used forecast time frame MNA, hypothesizing complete source cleanup: about 10–11 years achieved means natural attenuation
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The demonstration of monitored natural attenuation (MNA) of chlorinated hydrocarbons in groundwater is typically conducted through the evaluation of concentration trends and parent-daughter product relationships along prevailing groundwater flow paths. Unfortunately, at sites contaminated by mixtures of chlorinated ethenes, ethanes, and methanes, the evaluation of MNA by using solely concentrat...
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ژورنال
عنوان ژورنال: Water
سال: 2021
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w13212945