Work

Application of modified coriander seeds as biomaterial for removal of fluoride from aqueous media

Year: 2020

Type: article

Abstract: ABSTRACT The presence of fluoride ion above the permissible limits in drinking water can be a well-recognized risk factor for human health. Fluoride ion adsorption from aqueous media on modified coriander seeds, as a low-cost biomaterial, was investigated. The influence of adsorption parameters such as contact time, initial pH, adsorbent dosage, initial fluoride concentration, and temperature was studied. The results showed that the sorption process was influenced by these variables. Fluoride adsorption was confirmed by scanning electron microscopy. The Langmuir model has a good correlation to the adsorption data. Also, the dimensionless constant separation factor (R L ) values verified a highly favorable adsorption. The value of activation energy (580 kJ mol -1 ) represented that the sorption process is chemical. Based on the kinetic studies, the pseudo-second-order model yielded a better fit to experimental data, showing a chemisorption process. The adsorption process of fluoride removal onto modified coriander seeds was endothermic. Coriander seeds showed high adsorption potential and can be applied as a low-cost bioadsorbent for the rapid removal of fluoride ions from aqueous solution.

Source: Desalination and Water Treatment

DOI: 10.5004/dwt.2020.25089

Authors: Fatemeh Moradi, Sahar Shirmohammadi, Ahmad Zarei, Mohsen Rezaei

Institutions: Tehran University of Medical Sciences, Ardabil University of Medical Sciences, Gonabad University of Medical Sciences, University of Copenhagen

Language: English

Topic: Fluoride Effects and Removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: hybrid

Estimated APC paid: $1,000