A Macadamia integrifolia whitening extract and a preparation method thereof are disclosed. The preparation method includes: S1: carrying out a hot extraction on a crushed Macadamia integrifolia green peel using an ethanol solution as an extraction solvent to obtain a crude green peel extract; then enzymatically treating the crude green peel extract using a snailase to obtain a enzymatic hydrolysate; finally extracting the enzymatic hydrolysate using a petroleum ether, and taking an aqueous phase to obtain a green peel extract; S2: carrying out a hot extraction on crushed Sichuan lovase rhizome decoction pieces using an ethanol solution as an extraction solvent to obtain a Sichuan lovase rhizome extract; S3: dispersing the green peel extract and the Sichuan lovase rhizome extract in water to obtain a whitening extract.

A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation. Each flotation zone may be equipped with an independent pressurized micro air and/or ozone bubbles distribution system. The FOG is recovered in the first flotation zone without chemical additions. Coagulant and flocculant may be added in the second flotation zone to maximize removals of biochemical oxygen demand (BOD), total suspended solids (TSS), and colloidal particulates and produce clear effluent. Magnesium chloride is added in the third flotation zone to remove phosphorus and to form struvite particulates that can be used as fertilizer. Since both organic loading and solid loading in the treated effluent are significantly reduced, poultry processing plants can more easily meet wastewater treatment plant discharge limits and avoid surcharges.

A system for extracting nutrients from raw manure comprises: a manure pump for transferring manure from a reception pit to a rotary cutter configured to cut fibers of the raw manure to a desired length to generate a manure slurry. The manure slurry is transferred to a preprocessing tank having an agitator for agitating the manure slurry. An infeed pump transfers the manure slurry from the preprocessing tank to a decanter centrifuge, the centrifuge having at least one solid outlet and at least one liquid outlet. A control system controls a flow of the raw manure from the manure pump to the rotary cutter, and from the rotary cutter to the preprocessing tank, the infeed pump and the decanter centrifuge, and also controls each of these elements of the system. A nutrient content of the resulting liquid centrate is reduced by at least 50% as compared to the raw manure.

An entirely water-based, energy self-sufficient, integrated in-line waste management system is provided for comprehensive conversion of all organic fractions of municipal and wider community waste to fuels suitable for use in transportation, with all solid residues converted to high nutrition compost. The system is based on a combination of pre-treatment, involving alkaline hydrolysis and saponification; three-way separation of the pre-treated waste into different streams that are each directed to suitable further processing including fuel production; which includes biodiesel generation in a continuous-flow catalytic esterification unit, and anaerobic digestion to produce methane or other small molecule biofuel. Remaining solids are converted to compost in a quasi-continuous process.

A concentrated aqueous composition of microfibrillated cellulose (MFC) comprising salts for plant nutrition. The concentrated aqueous composition comprises microfibrillated linear polymers of D-glucose molecules (cellulose microfibers), calcium ions, sulfate ions and other elements for plant nutrition. The concentration of calcium ions and sulfate ions exceeds the concentration corresponding to the solubility of calcium sulfate in water. The proportion of MFC is within a range of 1% and 99% w/w of the composition, and the precipitation of salts is prevented in a pH range from 1 to 13.

A system and method for a reactor-based biomass processing comprising: detecting a biomass input, comprising: detecting the biomass type, detecting the biomass quality, comprising detecting the biomass composition including the biomass moisture content, and detecting the biomass quantity; determining an optimized end-product, wherein the end-product is at least partially based on: a selected production target, the biomass input, and on local conditions; and producing the end-product, comprising: monitoring reaction conditions, configuring the reactor for the output production, based at least partially on biomass input, wherein configuring the reactor includes adjusting an oxygen flow rate into the reactor, and implementing a biomass decomposition.

Solid waste, for example source separated organics (SSO) or commercial and industrial (C&I) waste or both, are treated by first pressurizing the waste against a screen to produce a solids fraction and a liquid fraction. The liquid fraction can be treated in an anaerobic digester. The solids fraction is pulverized or milled, for example with a hammer mill, preferably after being diluted. The pulverized or milled waste is separated again to provide a second solids faction and a second liquid fraction. The liquid fraction can be treated in an anaerobic digester. The solids fraction is primarily inert and can be landfilled, preferably after being washed.

The present technology relates to a method for preparing a mixture of solid potassium salts from a fermentation juice from a fermentation process for the production of chemical compounds in a pH-controlled fermentation medium by adding of a base comprising potassium hydroxide. The method comprises adding an acid to the fermentation juice in an amount sufficient to cause the precipitation of the mixture of potassium salts, and then separating the mixture of salts of potassium solid potassium acidified fermentation juice. The present technology also relates to the mixture of potassium salts obtained by said method and its use as fertilizer.

The present technology relates to a method for preparing a mixture of solid potassium salts from a fermentation juice from a fermentation process for the production of chemical compounds in a pH-controlled fermentation medium by adding of a base comprising potassium hydroxide. The method comprises adding an acid to the fermentation juice in an amount sufficient to cause the precipitation of the mixture of potassium salts, and then separating the mixture of salts of potassium solid potassium acidified fermentation juice. The present technology also relates to the mixture of potassium salts obtained by said method and its use as fertilizer.

The present invention is a plant growth promoter containing one or more seed shell components of plant selected from Palmae Elaeis, Leguminosae Faboideae, Juglandaceae, Rosaceae Prunus, and Oleeae.