The potential application of tomato seeds as low-cost industrial waste in the adsorption of organic dye molecules from colored effluents

Abstract

A B S T R A C TThe objective of current study is to investigate the tomato seeds (TSs) as a low-cost industrial waste material to be employed in the adsorption of two acid dyes (C.I. Acid Red 14 (AR14) and C.I. Acid Blue 92 (AB92)). In this regard, field emission scanning electron microscope images, Fourier transform infrared analysis, and determination of isoelectric pH were used to characterize the surface morphology, functional groups, and surface charge of TS, respectively. Initial dye concentration, pH, and adsorbent dosage were studied as the key parameters that affect the adsorption performance. The isotherm, kinetic, and thermodynamic parameters of removal process were determined. It was found that the experimental data had followed the Langmuir isotherm model. The pseudo-second-order kinetic model described the rate of adsorption process properly. Temperature variation of adsorption process indicated that the removal of AR14 and AB92 by TS was an exothermic and spontaneous procedure. Finally, the cost analysis demonstrated that TS can be suggested as an effective and eco-friendly biosorbent for the removal of organic dyes from colored textile wastewaters.

Characterization of pulverized Marula seed husk and its potential for the sequestration of methylene blue from aqueous solution

“…A lot of locally available plant materials have been reported useful for the removal of dyes from aqueous solution based on adsorption technology. These include papaya leaves and seeds [14, 15], groundnut shell powder [16], fallen leaves of Platanus [17], pumpkin seed hull [18], rubber seed shell [19–21], walnut sawdust [22], melon seed shell [23], tomato seed [24] and white pine sawdust [25].…”

Study of the Adsorption of Methylene Blue and Tartrazine in Aqueous Solution by Local Materials of Cameroonian Origin

“…Various conventional methods have been used to remove organic pollutants from water. The most used methods are made by chemical, physicochemical or biological methods such as coagulation, flocculation, precipitation and membrane filtration, and adsorption, which is the most effective treatment method for removing dyes [3][4][5][6]. In this study, we opted for the adsorption process, which is considered one of the most widely used treatment techniques for removing organic compounds and metal ions in general from water.…”

Preparation of a hydroxyethyl–titanium dioxide–carboxymethyl cellulose hydrogel cage and its effect on the removal of methylene blue

“…Both ground and surface waters are being polluted by industrial wastewater, especially in developing countries . According to reports, organic dyes are a major constituent of industrial wastewater, and they greatly threaten human beings and aquatic life . Hence, the treatment of these organic contaminants before discharge is crucial to social development.…”