Process information
| Key Data Set Information | |
| Location | IT |
| Geographical representativeness description | This study is based on indoor experiments, where the author's hometown is filled in. |
| Reference year | 2023 |
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| Use advice for data set | Users should apply this data for laboratory-level soil remediation scenarios only and not extrapolate to field-level without proper scaling and modifications. The system's low maintenance and resource requirements are specific to the lab setting; large-scale applications will differ significantly. Special attention should be given to the correct proportioning of soils, nutrients, and biosurfactants and continuous monitoring of process parameters such as pH and oxygen transfer rates. It is crucial to consider the inoculum cultivation and chemical usage on upscaling the process, which are excluded in this LCA data set. |
| Technical purpose of product or process | This detailed LCA data pertains to a laboratory-scale soil remediation process where bioslurry reactors are utilized to treat petroleum hydrocarbon-contaminated soil. The process is suited for experimental research purposes and provides a basis for potential upscaled industrial applications in the environmental engineering sector, such as large-scale soil decontamination projects. |
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| General comment on data set | Transfer the contaminated soil to a bioreactor, mix it with water to form a slurry, adjust the appropriate pH, and add a certain amount of nutrients and surfactants. At the same time, air is blown into the bottom for oxygenation, meeting the oxygen needs of microorganisms while allowing them to fully contact pollutants and accelerate their degradation. After degradation is completed, filter and dehydrate the soil |
| Copyright | No |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Functional Unit | The functional unit for this study is related to treated soil polluted with petroleum hydrocarbons using bioslurry (100 g, 36.5 kWh). The initial concentration of total petroleum hydrocarbons is 4500 mg/kg. |
| Technological representativeness | |
| Technology description including background system | Degradation studies were conducted in mesocosm consisting of bioslurry reactors using 100 g of soil polluted with diesel oil suspended in 500 mL of distilled water with a 1:5 soil-to-water ratio. They stimulated with 1.5 g NH4Cl and 0.1 g KH2PO4 + 5 g/L of activated sludge + supplemented with crude novel rhamnolipids (275 mL). 1 L Erlenmeyer/conical flasks were used as bioreactors with constant mixing by mechanical mixers at 150 rpm to ensure substrate availability and oxygen transfer for about 20 days. The analyses revealed that the combination of activated sludge, nutrients, and biosurfactant showed a 79.4 % reduction in TPHs after 20 days in the mesocosm experiment. |
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Modelling and validation
Administrative information
Inputs and Outputs