TY - JOUR

T1 - Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents

T2 - Effect of Temperature and Amount of Clay during Synthesis

AU - Olivelli, Melisa Soledad

AU - Schampera, Birgit

AU - Woche, Susanne Karoline

AU - Torres Sanchez, Rosa Maria

AU - Curutchet, Gustavo

AU - Guggenberger, Georg

N1 - Funding Information: Ministerio de Ciencia y Técnica, Agencia Nacional de Promocion Cientifíca y Tecnologica, MINCyT–ANPCyT–FONARSEC [FS-Nano 008]; CONICET [PIO YPF 13320130100203CO]; Deutsche Forschungsgemeinschaft (German Research Foundation) [SCHA 1732/1-1]; and a CONICET postdoctoral fellowship and a co-funded DAAD-CONICET grant (Programa de Visitas Científicas al Extranjero 2014 CONICET-DAAD) to carry out this research. Funding Information: The authors acknowledge the Ministerio de Ciencia y Técnica, Agencia Nacional de Promocion Cientifíca y Tecnologica, MINCyT-ANPCyT-FONARSEC through FS-Nano 008; CONICET PIO, and Deutsche Forschungsgemeinschaft (German Research Foundation), SCHA 1732/1-1, for financial support. G.C., R.M.T.S., and M.S.O. are members of CONICET, and M.S.O. acknowledges a CONICET fellowship and a co-funded DAAD-CONICET grant to carry out this research.

PY - 2023/1/11

Y1 - 2023/1/11

N2 - The physicochemical properties of an enhanced adsorbent material generated by clays and fungal biomass can be modified systematically. We used spectroscopic techniques to investigate the interaction mechanisms between biomass and clay and how surface properties change with synthesis temperature and clay amounts. Biomass-clay complexes were synthesized and either shock-frozen and freeze-dried or dried at 60 °C in the oven. Surface and bulk properties were analyzed by scanning electron microscopy, attenuated total reflectance-Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and by wettability and surface charge measurements. Interactions of specific biomass-related molecules with clay and changes in physicochemical properties were observed. Higher amounts of clay caused a decrease in particle aggregation while the biomass arranged more evenly. XPS proved interactions due to exchange reactions between Na from the clay and biomass external organic compounds. FTIR, wettability, surface charge, and XPS indicated a less ordered arrangement of the biomass on the clay when drying was performed at 60 °C. The properties of these types of materials define their potential use in future applications. These results indicate the possibility of the selective creation of bioclays: more hydrophobic, with a higher content of organic matter or more specific functional groups on the surface.

AB - The physicochemical properties of an enhanced adsorbent material generated by clays and fungal biomass can be modified systematically. We used spectroscopic techniques to investigate the interaction mechanisms between biomass and clay and how surface properties change with synthesis temperature and clay amounts. Biomass-clay complexes were synthesized and either shock-frozen and freeze-dried or dried at 60 °C in the oven. Surface and bulk properties were analyzed by scanning electron microscopy, attenuated total reflectance-Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and by wettability and surface charge measurements. Interactions of specific biomass-related molecules with clay and changes in physicochemical properties were observed. Higher amounts of clay caused a decrease in particle aggregation while the biomass arranged more evenly. XPS proved interactions due to exchange reactions between Na from the clay and biomass external organic compounds. FTIR, wettability, surface charge, and XPS indicated a less ordered arrangement of the biomass on the clay when drying was performed at 60 °C. The properties of these types of materials define their potential use in future applications. These results indicate the possibility of the selective creation of bioclays: more hydrophobic, with a higher content of organic matter or more specific functional groups on the surface.

UR - http://www.scopus.com/inward/record.url?scp=85145473460&partnerID=8YFLogxK

U2 - 10.1021/acs.iecr.2c03236

DO - 10.1021/acs.iecr.2c03236

M3 - Article

AN - SCOPUS:85145473460

VL - 62

SP - 375

EP - 384

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 1

ER -