Biosorption of metribuzin pesticide by Cucumber (Cucumis sativus) peels-zinc oxide nanoparticles composite

Abstract

Herein, a biosorbent was prepared from cucumber peels modified with ZnO nanoparticles (CPZiONp-composite) for the biosorption of metribuzin. Characterization of the composite was accomplished using FTIR, SEM, EDX, surface area pore size analyzer and pH of point of zero charge (pHpzc). Biosorption study was executed in batch concerning the impact of pH, composite dose, contact time, initial metribuzin concentration and temperature. The biosorption depends on pH and maximum biosorption was acquired at pH 3.0. Surface chemistry of the composite was studied by determining the pHpzc and was found to be 6.1. The biosorption nature was investigated using isotherms and was assessed that Freundlich isotherm is well suited for the fitting of the biosorption data owing to the highest R2. The maximum biosorption capacity of CPZiONp-composite was found to be 200 mg g-1. The biosorption data were fitted in to different kinetic models and the outcomes suggesting that pseudo second order is a satisfactory model to interpret the biosorption data owing to the highest R2. Thermodynamic parameters for instance entropy, enthalpy and Gibbs free energy were computed and revealed that biosorption of metribuzin onto CPZiONp-composite is spontaneous and exothermic process.

Neem biomass derived carbon quantum dots synthesized via one step ultrasonification method for ecofriendly methylene blue dye removal

“…Based on the linear correlation (R2) data, the second-order kinetics experiments showed better linearity than that of the first-order kinetics. This result suggests that the sorption process operates via an electrostatic mechanism, where the MB dye and the functional groups on BCDs share charges 74 .…”

Assessing the Biological Sensitivity of Certain Agricultural Plants to Some Common Herbicides by Using the Gr50 Test

“…Brinkman et al (1980) and Fuscaldo et al (1999) demonstrated the potential utility of oats in estimating residues of atrazine and metribuzin in soil due to its high sensitivity to the inhibitory effects of these herbicides on seedling growth. Conversely, Simard et al (2017) and Haq et al (2022) highlighted the sensitivity of cucumber and mallow (molokhia) to the herbicide linuron. Moreover, several researchers (Chopra et al, 2015;Chen et al 2019;Jiang et al, 2022) have also suggested the use of wheat and barley in estimating pendimethalin residues.…”

Effective Removal of Nitrogenous Pesticides from Water Using Functionalized Calix[4]arene‐Decorated Magnetite Nanoparticles

“…Various studies have been carried out to develop nanomaterial-based adsorbents for the removal of pesticides from water. MET and DIC pesticides removal from water has been examined by amino-functionalized Fe 3 O 4 nanoparticles, [12] magnetic switchgrass biochar(MSGB), [13] coal fly ash, [14] cucumber peel modified with ZnO nanoparticles, [15] dispersive-micro-solid phase extraction by dendrimer-modified MNPs, [16] and pyrene based organic polymer. [17] All reported adsorbents can adsorb pesticides but their specificity and selectivity for nitrogenous pesticides are not optimum.…”