Passion fruit peel flour as arsenic biosorbent for water treatment
Recent work has shown that peels from passion fruit and other fruits can be successfully used for the removal of inorganic contaminants from water and wastewater. This work describes the chemical characterization of passion fruit (Passiflora sp.) peel flour (PFPF) and its use as an efficient and low-cost sorbent for As(III) removal in water treatment. Under experimental conditions, PFPF showed an As(III) adsorption capacity of 10.2 ± 0.6 mg g-1 and As(III) removal performance of 90%. The main difference between FTIR spectra acquired before and after As(III) adsorption was a band at around 1342 cm-1, which could be attributed to interaction between As(III) and the carboxyl groups of PFPF. The thermal decomposition profiles of PFPF before and after As(III) adsorption showed significant differences, which could be explained by the desorption of arsenic oxide or fusion of the arsenic oxides. The adsorption of As(III) by PFPF was a spontaneous process. SEM images revealed an amorphous structure of PFPF, with large clusters of soft fibers favoring physical adsorption.
Passion fruit peel flour as arsenic biosorbent for water treatment
-
DOI: 10.22533/at.ed.28021260815
-
Palavras-chave: Inorganic contaminants; Biosorption; Wastewater, Passiflora sp.
-
Keywords: Inorganic contaminants; Biosorption; Wastewater, Passiflora sp.
-
Abstract:
Recent work has shown that peels from passion fruit and other fruits can be successfully used for the removal of inorganic contaminants from water and wastewater. This work describes the chemical characterization of passion fruit (Passiflora sp.) peel flour (PFPF) and its use as an efficient and low-cost sorbent for As(III) removal in water treatment. Under experimental conditions, PFPF showed an As(III) adsorption capacity of 10.2 ± 0.6 mg g-1 and As(III) removal performance of 90%. The main difference between FTIR spectra acquired before and after As(III) adsorption was a band at around 1342 cm-1, which could be attributed to interaction between As(III) and the carboxyl groups of PFPF. The thermal decomposition profiles of PFPF before and after As(III) adsorption showed significant differences, which could be explained by the desorption of arsenic oxide or fusion of the arsenic oxides. The adsorption of As(III) by PFPF was a spontaneous process. SEM images revealed an amorphous structure of PFPF, with large clusters of soft fibers favoring physical adsorption.
-
Número de páginas: 1
- Emylle Emediato Santos
- Constanza Catarina Cid Bustamente
- Josiane Lopes de Oliveira
- Paulo Henrique Carvalho
- Liliane Catone Soares
- Roberta Eliane Santos Froes
