Examining Energy Consumption and Carbon Emissions of Microbial Induced Carbonate Precipitation Using the Life Cycle Assessment Method

Microbial induced carbonate precipitation (MICP) is a new geotechnical engineering technology used to strengthen soils and other materials. Although it considered be environmentally friendly, there lack of quantitative data objective evaluation support conclusions about its environmental impact. In this paper, the energy consumption carbon emissions MICP are quantitatively analyzed by using life cycle assessment (LCA) method. The effects evaluated from perspectives resource results show that for each tonne calcium produced technology, 1.8 t standard coal consumed 3.4 CO2 produced, among which 80.4% 96% come raw Comparing with cement, lime, sintered brick, current application process consumes less non-renewable resources but has greater major impact production smoke ash, secondary impacts being global warming, photochemical ozone creation, acidification, eutrophication. five potential scenarios MICP, including concrete, lime mortar, mine cemented backfill, foundation reinforcement, 3 7 times than traditional technologies. 15 23 times. Based on characteristics at condition, suggestions given future research MICP.