Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent

Abstract

Magnetite (MG) modified cellulose membrane (Cell-MG), obtained by reaction of 3-aminosilane and subsequently with diethylenetriaminepentaacetic acid dianhydride functionalized waste Cell fibers (Cell-NH2 and Cell-DTPA, respectively), and amino-modified diatomite was used for Azoxystrobin and Iprodione removal from water. Cell-MG membrane was structurally and morphologically characterized using FT-IR and FE-SEM techniques. The influences of operational parameters, i.e. pH, contact time, temperature, and the mass of adsorbent on adsorption and kinetics were studied in a batch system. The calculated capacities of 35.32 and 30.16 mg g-1 for Azoxystrobin and Iprodione, respectively, were obtained from non-linear Langmuir model fitting. Weber-Morris model fitting indicates the main contribution of intra-particle diffusion to overall mass transport resistance. Thermodynamic data indicate spontaneous and endothermic adsorption. The reusability of adsorbent and results from wastewater purification showed that Cell-MG could be used as general-purpose adsorbent. The adsorbent/adsorbate surface interaction was considered from the results obtained using density functional theory (DFT) and calculation of molecular electrostatic potential (MEP). Thus, a better understanding of the relation between the adsorption performances and contribution of non-specific and specific interactions to adsorption performances and design of novel adsorbent with improved properties was deduced

Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent

“…In addition, it was recently shown that Fe 3 O 4 modified cross-linked COO-functionalized cellulose membrane manifested moderate removal efficiency for the Azoxystrobin and Iprodione pesticides [38]. In an analogous manner, 38.6 mg g − 1 adsorption capacity of Azoxystrobin uptake using A-LMS_Fe 3 O 4 in batch experiments is an additional proof of material versatility.…”

Removal of the As(V) and Sr(VI) from the water using magnetite/3D-printed wollastonite hybrid adsorbent

“…There are many different methods for the removal of heavy metal ions from water, such as coagulation, flocculation, ion exchange, membrane filtration, and separation. Modification of the surface of the inorganic materials can be physical or chemical, that enables to be adjusted for the various specific use of adsorbent for heavy metals [9]. Consequently, adsorption is the most efficient and economical method of wastewater purification [10].…”