6533b7d2fe1ef96bd125eda9

RESEARCH PRODUCT

Evaluation of the optimal activation parameters for almond shell bio-char production for capacitive deionization

M.p. ManiscalcoM.p. ManiscalcoChiara CorradoAntonio MessineoRoberto Volpe

subject

Environmental EngineeringMaterials scienceCapacitive deionization020209 energychemistry.chemical_elementBioengineering02 engineering and technologyCarbon activation010501 environmental sciences01 natural sciencesDesalinationCapacitive deionizationBiomaAdsorptionSettore BIO/13 - Biologia ApplicataSpecific surface areaAlmond shell0202 electrical engineering electronic engineering information engineeringPorosityWaste Management and Disposal0105 earth and related environmental sciencesRenewable Energy Sustainability and the EnvironmentMicroporous materialchemistryChemical engineeringPyrolysisCarbon

description

Abstract A study on a possible new biomass waste to be used as electrode material for capacitive deionization (CDI) processes was performed. Raw almond shells were pyrolyzed at 800, 900 and 1000 °C and then activated through CO2. Carbon activation is used to develop porosity inside the material, increasing the specific surface area and the adsorption performances. In this work, authors tried to correlate the effects of pyrolysis and activation temperature on the ion storage capacity. Results from the desalination tests indicated that the best performance in terms of ion adsorption was obtained when the bio-char was activated at the temperature of 900 °C. Brunauer-Emmet-Teller (BET) and Barret-Joyner-Halenda (BHJ) analysis confirmed the trend of the CDI tests, reporting the highest surface area and share of micropore sites for the 900 °C samples. Salt adsorption capacity was found to be in the range of 13.7 to 19.2 mg g−1.

yearjournalcountryeditionlanguage
2020-09-01Bioresource Technology Reports
https://doi.org/10.1016/j.biteb.2020.100435