A composition remediation of soil and groundwater containing halogenated compounds. The remediation composition includes an elemental iron-based composition, which may include activated carbon capable of absorbing the halogenated compounds with numerous pores impregnated with elemental iron. The remediation composition further includes a first bioremediation material including a blend of one-to-many organisms capable of degrading the halogenated compounds. The remediation composition includes an organic compound or polymeric substance and a second bioremediation material including a blend of one-to-many organisms capable of degrading the organic compound or polymeric substance over time (e.g., 20 to 365 or more days to provide a time release substrate-creating material or platform) into smaller molecules or compounds used by the organisms in the first bioremediation material while degrading the halogenated compounds. The organic compound may be a complex carbohydrate such as food grade starch, chitin, or other complex carbohydrate such as one with low water solubility.

A hydraulic binder based on a sulfoaluminate clinker including the mineralogical phases ye'elimite C.sub.4A.sub.3$, mayenite C.sub.12A.sub.7, free lime CaO, and optionally belite C2S, characterized in that, in the clinker, the mineralogical phases are 20% to 50% by weight of ye'elimite C4A3$ phase, 5% to 80% by weight of mayenite C.sub.12A.sub.7 phase, and 1% to 5% by weight of free lime CaO, the weight ratio between the mayenite C.sub.12A.sub.7 and ye'elimite C.sub.4A.sub.3$ phases being between 0.1 and 10. The binder can be used to treat polluted soils, in particular soils with a leachable fraction greater than 0.4% that contains predominantly anions and/or heavy metal cations by mixing the soil with the hydraulic binder, in soil/binder weight proportions of between 1 and 40 parts of binder for 100 parts of soil. It makes it possible to stabilize soils which are polluted or to stabilize soils before dumping.

Disclosed are processes for removing carbon steel components of a subsea oilfield facility in a subsea environment by accelerating the corrosion of the carbon steel components in the surrounding seawater, by a passive and/or active impressed current method. In the passive method, the facility is connected to a cathodic metal of greater electrical potential, such as copper. In order to cause the maximum and uniform corrosion, it is preferred that a wire of the chosen cathodic metal be extended along the facility and through pipelines. In the active impressed current method, an external DC electrical supply is used to apply an electrical potential difference between the steel components of the facility and the cathodic metal.

A liquid concentrate composition for remediation of groundwater, said composition consisting of powdered iron in the amount of 30 to 70% zero-valent iron powder, such as 40 wt, 1 to 15 wt % of water, 0.1 to 1.5% of surfactant and 40 to 70 wt % of the organic carrier, wherein the organic carrier is added to the 100 wt % and optionally, organic electron donor solution and/or remediation chemical, wherein organic electron donor solution and/or remediation chemical is not exceeding 10 wt % of the liquid concentrate.

The present disclosure relates to a device and method for remedying a heavy-metal-polluted soil with a microorganism, and relates to a device for remedying a metal-polluted soil and a remediation method thereof. The present disclosure solves the problem that a remediation microorganism cannot be extracted from the soil. The device comprises a main plate and a plurality of microorganism-extracting chambers, wherein the main plate is connected to the microorganism-extracting chambers; the microorganism-extracting chamber are filled with a filler; a tail end of the microorganism-extracting chambers is spiky, and openings are separately provided on a side wall of the microorganism-extracting chambers. The method comprises: I, adding a nutrient medium to the soil, and then inoculating a remediation microorganism; and II, inserting the above device into the soil for 6˜8 days, and then taking it out. The method can remedy heavy-metal-polluted soil in a short time with a high removal rate of the heavy metal.

The present invention relates to reduction of per- and polyfluoroalkyl compounds (PFAS) in a desired zone of treatment for the continuous remediation of contaminated solids and liquids. In particular, embodiments of the present invention relate to the in-situ treatment of solids and liquids by a particular combination of reagent and conditions. The reagents include an oxidant and a metal catalyst. Disclosed method combines low temperature thermal remediation with chemical oxidation to destroy poly- and perfluoroalkyl substances in-situ. The disclosed methods may enhance destruction of organic contaminants in the desired zone of treatment. The present invention also relates to a method for applying the remediation compositions to contaminated sites and controlling the process by monitoring the degradation event to achieve maximum reduction of PFAS.

A method for biological hydrosynthesis, energy generation and storage and/or topsoil restoration comprising the steps of: undertaking a primary amendment of a site with a first catalyst and a second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the site such that a matrix of biological energy generation points are constructed on about 5% of the site by area; undertaking a secondary amendment of the site with the first catalyst and the second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the site such that a matrix of biological energy generation points are constructed on about 20% of the site by area, and undertaking a tertiary amendment of the site with the first catalyst and the second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the site such that a matrix of biological energy generation points are constructed on about 75% of the site by area, wherein the primary amendment, the secondary amendment and the tertiary amendment of the site are each conducted at least once.

A closed-loop system and method for heating of target contaminant zones having environmental contaminants of concern present in the groundwater and the soil by thermal conduction, and subsequent enhancements of physical, biological and chemical processes to attenuate, remove and degrade contaminants in the target contaminant treatment zones, is disclosed. The system and method collects solar or other heat and transfers the heat via a closed-loop and a set of borehole exchangers to subsurface soil in the proximity of and/or directly to the target contaminant treatment zones. The target contaminant treatment zone may comprise contaminated soil, contaminated groundwater in an aquifer, or industrial waste comprising water and/or solids. Solar collectors or heat exchangers capturing waste heat from industrial processes may be used as the heat source.

A method for restoring a contaminated site comprising the steps of: undertaking a primary amendment of a contaminated site with a first catalyst and a second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the contaminated site such that a matrix of biological energy generation points are constructed on about 5% of the contaminated site by area; undertaking a secondary amendment of the contaminated site with the first catalyst and the second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the contaminated site such that a matrix of biological energy generation points are constructed on about 20% of the contaminated site by area, and undertaking a tertiary amendment of the contaminated site with the first catalyst and the second catalyst, wherein the first catalyst and the second catalyst are applied to at least a portion of the contaminated site such that a matrix of biological energy generation points are constructed on about 75% of the contaminated site by area, wherein the contaminated site is a contaminated site that has excessive acidity, alkalinity and/or sodic contamination, and wherein the primary amendment, the secondary amendment and the tertiary amendment of the contaminated site are each conducted at least once and wherein the outcome of those amendments is the improved capacity of the soil of the contaminated site to balance hydrogen compounds such that excessive acidity, alkalinity or sodic properties of the contaminated site are ameliorated.

A growing unit for biological hydrosynthesis, energy generation and storage and/or topsoil restoration, the growing unit comprising: a container configured for growing plants and containing a growth media located therein; a reservoir located in a lower portion of the container and associated with an outlet portion of the container, and a substantially vertical liquid inlet pipe associated with the reservoir, wherein the growth media comprises a mixture including a first catalyst, wherein the first catalyst stimulates formation of a humified soil and wherein the growth media is amended with an irrigation liquid which stimulates biological activity in the growth media and in and adjacent to the reservoir.