Abstract: A system of treating reject brine and capturing carbon dioxide (CO2) includes a two-stage electrodialysis (ED) process for producing multiple products with high purity from rejected brine and flue gas mixtures (10% CO2 and 90% N2) emitted from an industrial plant. According to an embodiment, the system includes a first electrodialysis (ED) stage and a second electrodialysis (ED) stage in series.

Abstract: A method for processing a salt solution together with carbon dioxide is disclosed. The method comprises: extracting lignin from biomass; and treating the salt solution with the lignin residue and the carbon dioxide.

Abstract: A system of treating reject brine and capturing carbon dioxide (CO2) includes a two-stage electrodialysis (ED) process for producing multiple products with high purity from rejected brine and flue gas mixtures (10% CO2 and 90% N2) emitted from an industrial plant. According to an embodiment, the system includes a first electrodialysis (ED) stage and a second electrodialysis (ED) stage in series.

Abstract: Lignocellulosic waste, such as date palm seeds, is treated with industrial waste such as rejected brine solution waste from a water treatment desalination plant to break down lignin and isolate and recover cellulose. Such a method is more cost effective and less toxic than other current and prior methods. Such a method concurrently solves two problems—usage of lignocellulose waste and usage of brine solution waste from a desalination treatment plant—to isolate and recover biocompatible, biodegradable versatile cellulose.

Abstract: The hydroxyethyl cellulose derived from biomass is made by preparing a biomass by extracting resins and waxes, acid leaching, and alkali treatment to obtain a cellulose-rich residue, and then bleaching the cellulose-rich residue, followed by hydroxyethylation of the cellulose to obtain hydroxyethyl cellulose. The use of hydroxyethyl cellulose in brine treatment include reacting concentrated brine and hydroxyethyl cellulose with an effluent gas stream to capture CO2 and reduce salinity of the concentrated brine. The reduced salinity brine may then be useful for enhanced oil recovery methods.

Abstract: The hydroxyethyl cellulose derived from biomass is made by preparing a biomass by extracting resins and waxes, acid leaching, and alkali treatment to obtain a cellulose-rich residue, and then bleaching the cellulose-rich residue, followed by hydroxyethylation of the cellulose to obtain hydroxyethyl cellulose. The use of hydroxyethyl cellulose in brine treatment include reacting concentrated brine and hydroxyethyl cellulose with an effluent gas stream to capture CO2 and reduce salinity of the concentrated brine. The reduced salinity brine may then be useful for enhanced oil recovery methods.