The maple syrup filtering process includes generating pressure with a variable power output pump to generate a flow of maple syrup in a filterpress apparatus from an inlet to an outlet. The maple syrup is filtered with a filtering medium as it flows between the filterpress inlet and outlet, to generate filtered maple syrup. Fluid pressure of the maple syrup is monitored with a pressure sensor located upstream of the filtering medium. The fluid pressure might fluctuate as a result of a composition of the unfiltered maple syrup or the level of clogging of the filtering medium. A variable power output of the pump is automatically controlled with a controller responsive to fluctuations in fluid pressure monitored with the pressure sensor to achieve a target pressure measured at the pressure sensor. The filterpress apparatus can include a series of filters through which the maple syrup is filtered.

The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and a liquid and a fiber fraction are produced. The fiber fraction is subjected to enzymatic liquefaction and saccharification. The method of the present invention comprises: performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurized reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fiber fraction and a liquid fraction; selecting the temperature and residence time for the hydrothermal pretreatment, so that the fibrous structure of the feedstock is maintained and at least 80% of the lignin is maintained in the fiber fraction.

Biomass feedstocks (e.g., plant biomass, animal biomass, and municipal waste biomass) are processed to produce useful products, such as fuels. For example, systems are described that can be useful for separating solids from liquids of bioprocessed biomass material slurries. For example, filtration systems are described that include multiple centrifuges, e.g., multiple tandem centrifuges.

Biomass feedstocks (e.g., plant biomass, animal biomass, and municipal waste biomass) are processed to produce useful products, such as fuels. For example, systems are described that can be useful for separating solids from liquids of bioprocessed biomass material slurries. For example, filtration systems are described that include multiple centrifuges, e.g., multiple tandem centrifuges.

A degassing chamber is disclosed, adapted for the efficient removal of entrained gases from liquids. In a preferred embodiment the degassing chamber is combined with and works in conjunction with a sedimentation tank to provide an efficient clarification station. The combined clarification station can have a footprint the same size as, or only slightly larger than, the footprint of the sedimentation tank alone. The degassing chamber is well-suited for retrofitting, and can easily be combined with most types of solid-liquid sedimentation tanks that are currently used in the industry.

A degassing chamber is disclosed, adapted for the efficient removal of entrained gases from liquids. In a preferred embodiment the degassing chamber is combined with and works in conjunction with a sedimentation tank to provide an efficient clarification station. The combined clarification station can have a footprint the same size as, or only slightly larger than, the footprint of the sedimentation tank alone. The degassing chamber is well-suited for retrofitting, and can easily be combined with most types of solid-liquid sedimentation tanks that are currently used in the industry.

In one aspect, catalytic membranes are described herein. In some embodiments, a catalytic membrane comprises a surface functionalized with a polymer, the polymer comprising cellulose solubilization functionalities and acid functionalities for the catalytic hydrolysis of cellulose and/or hemicellulose.

Systems, apparatuses, and methods for producing and using a sugar cane syrup, juice, or powder. In one embodiment, the invention is directed to a system and associated processes for processing sugar cane using a cold processing pipeline in a manner that retains its natural nutritional value while producing a syrup, juice, or powder without significant separation of the natural nutrients or use of harmful chemicals.

Systems, apparatuses, and methods for producing and using a sugar cane syrup, juice, or powder. In one embodiment, the invention is directed to a system and associated processes for processing sugar cane using a cold processing pipeline in a manner that retains its natural nutritional value while producing a syrup, juice, or powder without significant separation of the natural nutrients or use of harmful chemicals.

A method of producing a sugar liquid using a cellulose-containing biomass as a raw material includes (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution and (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances from a permeate side.