Removal of Pb(II) ions by cellulose modified-LaFeO3 sorbents from different biomasses

Autor: Shimaa M. Ali, Mohamed A. El Mansop, Ahmed Galal, Soha M. Abd El Wahab, Wafaa M. T. El-Etr, Hanaa A. Zein El-Abdeen
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: BMC Chemistry, Vol 17, Iss 1, Pp 1-9 (2023)
Druh dokumentu: article
ISSN: 2661-801X
47362863
DOI: 10.1186/s13065-023-01066-2
Popis: Abstract LaFeO3 perovskite is prepared by the cellulose-modified microwave-assisted citrate method using two different biomasses as a cellulose source; rice straw (RS) and banana peel (BP). The prepared samples are assigned as LaFeO3/cellulose-RS and as LaFeO3/cellulose-BP, respectively. Raman Spectra prove the presence of perovskite and cellulose phases, as well as biochar resulted from the thermal treatment of the cellulose. LaFeO3/cellulose-RS has a cauliflower morphology while, two phases are observed for LaFeO3/cellulose-BP, mesoporous cellulose phase and octahedral LaFeO3 nanoparticles as shown by scanning electron microscope (SEM) images. LaFeO3/cellulose-BP has higher porosity and larger BET surface area than LaFeO3/cellulose-RS. Both samples are applied for the removal of Pb(II) ions from aqueous solution by adsorption. The adsorption follows Langmuir isotherm, with maximum adsorption capacities of 524 and 730 mg/g for LaFeO3/cellulose-RS and LaFeO3/cellulose-BP, respectively. Cellulose precursors from different biomasses affect structural and morphological properties of LaFeO3/cellulose samples as well as the sorption performance for Pb(II) ions. BP is more recommended than RS, as a biomass, in the present study.
Databáze: Directory of Open Access Journals
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