Various embodiments of the present technology provide methods and systems for soil enrichment. The systems may comprise a bioreactor system coupled to an initial treatment system for the cultivation of a live microorganism culture containing organic nutrients on an agriculturally effective scale. The systems may be automated and/or portable for practical applications onto target fields. The live microorganism culture may be delivered onto the soil of the target fields, enriching the soil with the organic nutrients that become bioavailable to crops growing in the soil. The soil enrichment system may provide a sustainable approach to agriculture that may efficiently enhance the natural processes of the native soil of any crop.

A method of using algae to remove a contaminant or pollutant from a first fluid is provided. The method can include providing a growing apparatus having a first reservoir containing the first fluid and a second reservoir containing a second fluid, and growing the algae using the growing apparatus. The method can further include exposing the algae to the first fluid within the first reservoir where the algae uptakes the contaminant or pollutant from the first fluid, and exposing the algae via a belt to the second fluid in the second reservoir where the algae is stimulated to release the contaminant or pollutant. Exposing the algae to the first fluid within the first reservoir or the second fluid may change a growth rate of the algae.

Disclosed is a recycling purification and reuse system for farmland tail water, which includes a water collecting pool, a water purifying pool and a clean water pool; the water purifying pool is correspondingly arranged with the clean water pool; the water collecting pool is located above the side of the water purifying pool far away from the clean water pool; one side of the water collecting pool close to the water purifying pool is provided with an opening; the opening is provided with a filtering mechanism; the filtering mechanism is correspondingly arranged with the water purifying pool; a water pumping mechanism is arranged in the water purifying pool; and the water outlet end of the pumping mechanism is correspondingly arranged with the clean water pool.

According to present disclosure, there is disclosed an algae growth and cultivation system that provides a cost-efficient means of producing algae biomass as feedstock for algae-based products, such as, fertilizer, feed, biofuel manufacture, and desirably impacts, nutrient recovery from waste streams for valued byproducts production, recycle water, and alternative/renewable energy production. The system as discussed herein is an integrated systems approach to wastewater treatment, algal strains selection for byproducts production, and recycle of algal biomass-processing waste or additional algae harvested as feedstock for products such as fertilizer production. Embodiments of a system as discussed herein present an economically viable algae production system and process that allows algae-derived products such as fertilizer, feed, biofuels, etc. to compete with non-organic or petroleum products in the marketplace.

Provided herein are compositions and methods that can remove, metabolize, or degrade a hydrocarbon in an area that is contaminated by hydrocarbons. Methods for bioremediation of an area such as an area of land, a body of water, or a shoreline that are contaminated by a hydrocarbon, such as from a crude oil spill are also described. The compositions and methods described herein can be used on natural flora and fauna as well as manmade materials that are contaminated by a hydrocarbon.

Disclosed an aerobic system for decomposition of aqueous organic waste, which comprises at least a first processing container including sides, an upper opening, a substantially horizontal floor, an inlet, an outlet, at least one channel arranged at the floor having an upwardly opening mouth, a ventilating pipe extending above the mouth, and a pump connected to the pipe and arranged to provide a supply of a gas to the ventilating pipe.

A water filtration system and corresponding method for removing particulate waste and biochemical waste from water is provided. The system includes a first compartment containing algae in liquid suspension. The algae is usable to agglomerate to the particulate waste and biochemical waste to form algal particulates in the water. The water and agglomerated algal particulates are provided to a second compartment through a fluid transfer conduit. The second compartment includes a set of suspension assemblies, each of the suspension assemblies contain bivalves usable to siphon the algal particulates from the water.

To provide a new technique for efficiently recovering microplastics from water to be treated, in which problems of conventional techniques such as large energy consumption are solved. A method for recovering microplastics from water to be treated containing the microplastics, the method comprising a step of allowing algae having microplastic adsorption and recovery ability to be present in the water to be treated, in which the algae are algae that secrete a sticky substance, and an amount of a sticky substance secreted by the algae is such that a volume of a sticky substance secreted to an outside of cells is 0.25 times or more and 100 times or less compared to a cell volume.

A method of using algae to remove a contaminant or pollutant from a first fluid is provided. The method can include providing a growing apparatus having a first reservoir containing the first fluid and a second reservoir containing a second fluid, and growing the algae using the growing apparatus. The method can further include exposing the algae to the first fluid within the first reservoir where the algae uptakes the contaminant or pollutant from the first fluid, and exposing the algae via a belt to the second fluid in the second reservoir where the algae is stimulated to release the contaminant or pollutant. Exposing the algae to the first fluid within the first reservoir or the second fluid may change a growth rate of the algae.

Lake Kivu contains ˜50 million tonnes (MT) dissolved biomethane. Efficient use is problematic from massive associated CO.sub.2: ˜600 MT. Conventional extraction scrubs CO.sub.2 with ˜50% overall CH.sub.4 loss, and returns ˜80% CO.sub.2 into the deep lake, preserving a catastrophe hazard threatening >2 M people. Methods and systems are disclosed coupling: (1) efficient CH.sub.4+CO.sub.2 degassing; (2) optional oxyfuel power generation and CO.sub.2 power cycle technologies; and (3) CO.sub.2 capture, processing, storage and use in a utilization hub. The invention optimally allows power production with >2× improved efficiency plus cryo-energy storage and large-scale greentech industrialization. CO.sub.2-utilizing products can include: Mg-cements/building materials, algal products/biofuels, urea, bioplastics and recycled materials, plus CO.sub.2 for greenhouse agriculture, CO.sub.2-EOR/CCS, off-grid cooling, fumigants, solvents, carbonation, packaging, ores-, biomass-, and agro-processing, cold pasteurization, frack and geothermal fluids, and inputs to produce methanol, DME, CO, syngas, formic acid, bicarbonate and other greentech chemicals, fuels, fertilizers and carbon products.