Modified Moringa oleifera Lam. Seed husks as low-cost biosorbent for atrazine removal

Moringa oleifera seed husks for methylene blue dye adsorption: kinetic, equilibrium, and thermodynamic analyses

“…These results are expected, as the seed husks have not been activated, and are in accordance with the literature relating to in natura M. oleifera seed husks. Cusioli et al (2019) reported 1.52 m 2 g -1 and 0.021 cm 3 g -1 , and Quesada et al (2019) reported 1.2 m 2 g -1 and 0.002 cm 3 g -1 of specific surface area and total pore volume, respectively. The results are also in agreement with the behavior of a Type II isotherm, shown in Figure 2, of nonporous adsorbents.…”

“…The use of M. oleifera seed husk has not proved to be efficient as a coagulant (Kansal and Kumari, 2014). However, recent studies have been conducted to evaluate the possibility of using the husk as an adsorbent to remove pollutants from water, such as atrazine herbicide (Cusioli et al, 2019), acetaminophen analgesic (Quesada et al, 2019), diuron pesticide (Bezerra et al, 2018), trihalomethanes (Okoya et al, 2020), and cyanobacterial hepatotoxin microcystin-LR (Warhurst et al, 1997). The capacity of M. oleifera seed husk to remove those pollutants shows its potential application as a LCA in the treatment of drinking water and wastewater, and new studies for removal of different problematic pollutants are required, such as dyes from textile wastewaters.…”

Removal of atrazine from aqueous solutions onto a magnetite/chitosan/activated carbon composite in a fixed-bed column system: optimization using response surface methodology

“…In addition, atrazine is a weak base with a pKa value of 1.7. 42 Increasing the pH led to progressive deprotonation of the functional groups from the composite surface, and also suggested that the atrazine molecules were in the neutral form. 43 Moreover, an increase in the Q value led to an increase in the number of atrazine molecules ready to be adsorbed on the surface of adsorbent, which resulted in a decrease in the resistance to mass transfer through the adsorbent bed and reduced the residence time of adsorbate in the column to allow the diffusion of atrazine molecules into the pores of the adsorbent.…”

Modelling the Effect of Sorbate-Sorbent Interphase on the Adsorption of Pesticides and Herbicides by Historical Data Design

“…However, the incessant population explosion, dynamics of lifestyle patterns, and technological advancement require the use of P & H in large quantities to cope with the huge demand for agricultural produce in modern times. Therefore, high levels of residual P & H are often found in the environment, which has rendered the chemical being regarded as emerging pollutants because their use has led to soil pollution [3,4]. Further, P & H often leach from their point of primary application into nearby water bodies, thereby resulting in secondary water pollution and, sometimes, eutrophication [5].…”