Search results for "wastewater purification"

showing 3 items of 3 documents

Biomass-based composite catalysts for catalytic wet peroxide oxidation of bisphenol A : preparation and characterization studies

2019

Abstract The wet granulation process was used to prepare new, efficient, and cost-effective granular biomass-based composite catalysts for catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA). The most stable composite granules was prepared by mixing biomass-based carbon residue (CR) with metakaolin (MK) combined with calcium oxide (CaO) or cement and a solvent (NaOH or KOH). For all the prepared composite granules, the optimized binding agents to carbon ratio was 0.3, the solvent to carbon ratio 1.2, and the agitation rate 1200 rpm. The specific surface area of the prepared catalysts was 152–205 m2/g. The composite granular catalyst (CR + MK + CaO + NaOH) had the most durable and s…

Thermal desorption spectroscopybiomassacomposite catalystComposite numbergranular activated carbon02 engineering and technologyjätevesi010501 environmental sciences01 natural sciencesPeroxidewastewater purificationCatalysisGranulationchemistry.chemical_compoundSpecific surface areaChemical Engineering (miscellaneous)Calcium oxideWaste Management and Disposalta116komposiitit0105 earth and related environmental sciencesjäteveden käsittelybiomassProcess Chemistry and Technology021001 nanoscience & nanotechnologyPollutionSolventchemistryaktiivihiilioxidation of bisphenol A0210 nano-technologyNuclear chemistryJournal of Environmental Chemical Engineering
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Biodegradation of Synthetic Organic Compounds by Methanogenic Microbiome as an Alternative Approach for Wastewater Purification and Energy Production

2022

The use of fossil fuels (methane, oil, etc.) is undergoing an unprecedented crisis now. There is the urgent need to search for alternative energy sources. A wide range of degraded organic materials can be effectively used to provide energy together with environmental protection. Soapstock is a hazardous waste containing a high concentration of toxic organic compounds of man-made origin (fatty acids, surfactants, dyes, etc.). To prevent environmental contamination such substances require an effective treatment approach. The goal of the study was to isolate the adapted-to-fatty-acids methanogenic microbiome and investigate the patterns of sodium acetate and soapstock degradation with simultan…

Control and Optimizationsodium acetateRenewable Energy Sustainability and the Environmentmethane fermentationenvironment protection; energy carriers; soapstock; fatty acids; sodium acetate; methane fermentation; organic waste degradation; wastewater purificationEnergy Engineering and Power TechnologyBuilding and Constructionfatty acidswastewater purificationenvironment protectionElectrical and Electronic Engineeringsoapstockorganic waste degradationEngineering (miscellaneous)energy carriersEnergy (miscellaneous)Energies
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Biomass-based composite catalysts for catalytic wet peroxide oxidation of bisphenol A:preparation and characterization studies

2019

The wet granulation process was used to prepare new, efficient, and cost-effective granular biomass-based composite catalysts for catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA). The most stable composite granules was prepared by mixing biomass-based carbon residue (CR) with metakaolin (MK) combined with calcium oxide (CaO) or cement and a solvent (NaOH or KOH). For all the prepared composite granules, the optimized binding agents to carbon ratio was 0.3, the solvent to carbon ratio 1.2, and the agitation rate 1200 rpm. The specific surface area of the prepared catalysts was 152–205 m2/g. The composite granular catalyst (CR + MK + CaO + NaOH) had the most durable and stable str…

Oxidation of bisphenol AGranular activated carbonaktiivihiiliComposite catalystWastewater purificationbiomassa (teollisuus)jätevesiBiomasskomposiititjäteveden käsittely
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