Environmental and socio-economic evaluation of a groundwater bioremediation technology using social Cost-Benefit Analysis: Application to an in-situ metal(loid) precipitation case study
2024; Elsevier BV; Volume: 954; Linguagem: Inglês
10.1016/j.scitotenv.2024.176720
ISSN1879-1026
AutoresJesús Ibáñez, Alfredo Pérez‐de‐Mora, Mario Santiago-Herrera, Benjamine Belloncle, Herwig de Wilde, Sonia Martel-Martín, David Blanco-Alcántara, Rocío Barros,
Tópico(s)Sustainable Development and Environmental Policy
ResumoBioremediation can be an alternative or complementary approach to conventional soil and water treatment technologies. Determining the environmental and socio-economic impacts of bioremediation is important but rarely addressed. This work presents a comprehensive sustainability assessment for a specific groundwater bioremediation case study based on In-situ Metal(loid) Precipitation (ISMP) by conducting a social Cost-Benefit Analysis (CBA) using two different approaches: environmental Life Cycle Costing (eLCC) and Impact Pathway Approach (IPA). Externalities are calculated in two ways: i) using Environmental Prices (EP) to monetize Life Cycle Assessment (LCA) results and metal(loid)s removed at field scale, and ii) following the IPA steps to determine the social costs avoided by removing arsenic contamination at full scale. The results show that, in the baseline scenario, the project is not socio-economically viable in both cases as the Net Present Value (NPV) is -129,512.61 € and - 415,185,140 € respectively. Sensitivity and scenario analyses are performed to identify the key parameters and actions needed to reach a positive NPV. For instance, increasing the amount of water treated per year to 90 m
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