Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

Abstract

Abstract. This study was performed to measure the potential utilization of agro-waste to generate nanoparticles and evaluate its capability as a low-cost adsorbent for phenol removal. Adsorption studies for phenol removal using aloe vera and mesquite leaves nanoparticles were carried out under various experimental conditions including pH, nanobioadsorbent dosage, phenol concentration, contact time, temperature, and ionic strength in a batch reactor. The adsorption kinetics were applied by pseudo-rst order and pseudosecond order models and isotherm technique by Freundlich and Langmuir isotherms models. The results showed that the rate of phenol adsorption increases in both nano-bioadsorbents with an increase in pH up to 7, adsorbent dosage up to 0.08 gL 1 , phenol initial concentration up to 32 mgL 1 , contact time up to 60 min, and a raise in temperature. The adsorption data followed the Freundlich isotherm model. The kinetic studies indicated that the adsorption of phenol with nano-bioadsorbents was best described by the pseudo-second order kinetics. We found that the nanoparticles prepared from aloe vera and mesquite leaves had a high capability in adsorption of phenol, besides the point that they could be accessed at low cost. These agro-wastes can be used to remove phenol from aqueous environments.

Current Development of Sorbents Derived From Plant and Animal Waste as Green Solution for Treating Polluted Aqueous Media

“…Moreover, desorption study by deploying ethanol-treatment showed that the reusability of this matters was around half of its initial content. Eventually, plant leaves named aloe vera and mesquite leave were also reported dependable as sorbent alternative for purging phenol especially at neutral pH [70].…”

Aloe vera as Promising Material for Water Treatment: A Review

“…The final adsorbent materials were crushed and sieved (<180 µm). The obtained adsorbent showed biosorption capacity of 356 mg/g [66]. For the same dye, significant removal efficiency (98%) was obtained with reduced graphene oxide using AV [64].…”

Selective Absorption of Aromatic Compounds by Syndiotactic Polystyrene Aerogels

“…Phenol in water is partially dissociated into phenoxide ion and, its solubility increases as the ionic strength increases (salting-out effect). [31] However, it is worthwhile to note that benzene was absorbed by n-sPS aerogel with an absorption efficiency of approximately 70%. Similar result was obtained considering a binary toluenephenol aqueous solution in presence of NaCl (Figure 4b).…”