0000000001109524

AUTHOR

Riikka Juhola

showing 5 related works from this author

Bisphenol A removal from water by biomass-based carbon: isotherms, kinetics and thermodynamics studies

2018

Biomass-based carbon was modified and used as an efficient bisphenol A (BPA) sorbent. The simple and environmentally friendly modification method produced sorbent with a capacity of 41.5 mg/g. The ...

Bisphenol ASorbent0208 environmental biotechnologyKineticsBiomasschemistry.chemical_element02 engineering and technology010501 environmental sciences01 natural scienceschemistry.chemical_compoundPhenolsmedicineEnvironmental ChemistryBiomassBenzhydryl CompoundsWaste Management and Disposal0105 earth and related environmental sciencesWater Science and TechnologyWaterSorptionGeneral MedicineHydrogen-Ion ConcentrationEnvironmentally friendlyCarbon020801 environmental engineeringKineticsChemical engineeringchemistryThermodynamicsAdsorptionCarbonWater Pollutants ChemicalActivated carbonmedicine.drugEnvironmental Technology
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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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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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Bisphenol A removal from water by biomass-based carbon : Isotherms, kinetics and thermodynamics studies

2020

Biomass-based carbon was modified and used as an efficient bisphenol A (BPA) sorbent. The simple and environmentally friendly modification method produced sorbent with a capacity of 41.5 mg/g. The raw material was modified with FeCl3 (Fe-CR), treated with hydrochloric acid (H-CR) or modified with CaCl2 (Ca-CR). Batch sorption experiments were performed to evaluate the effects of the initial pH, sorbent dosage, temperature, and contact time on BPA removal. BPA removal with modified carbons was notably higher than that with unmodified carbon. All sorbent materials exhibited very high sorption capacities and compared favourably to materials reported in the literature. Several isotherms were ap…

bisfenoli Abiomass-based carbonbiohiilisorptioaktiivihiilienvironmentally friendlyhaitalliset aineet
researchProduct

Bisphenol A removal from water by biomass-based carbon: isotherms, kinetics and thermodynamics studies

2018

Biomass-based carbon was modified and used as an efficient bisphenol A (BPA) sorbent. The simple and environmentally friendly modification method produced sorbent with a capacity of 41.5 mg/g. The raw material was modified with FeCl3 (Fe-CR), treated with hydrochloric acid (H-CR) or modified with CaCl2 (Ca-CR). Batch sorption experiments were performed to evaluate the effects of the initial pH, sorbent dosage, temperature, and contact time on BPA removal. BPA removal with modified carbons was notably higher than that with unmodified carbon. All sorbent materials exhibited very high sorption capacities and compared favourably to materials reported in the literature. Several isotherms were ap…

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