A Novel Triazole Schiff Base Derivatives for Remediation of Chromium Contamination from Tannery Waste Water

Abstract

Tannery industries are one of the extensive industrial activities which are the major source of chromium contamination in the environment. Chromium contamination has been an increasing threat to the environment and human health. Therefore, the removal of chromium ions is necessary to save human society. This study is oriented toward the preparation of a new triazole Schiff base derivatives for the remediation of chromium ions. 4,4’-((1E)-1,2-bis ((1H-1,2,4-triazol-3-yl) imino)ethane-1,2-diyl) diphenol was prepared by the interaction between 3-Amino-1H-1,2,4-triazole and 4,4’-Dihydroxybenzil. Then, the produced Schiff base underwent a phosphorylation reaction to produce the adsorbent (TIHP), which confirmed its structure via the different tools FTIR, TGA, 1HNMR, 13CNMR, GC-MS, and Phosphorus-31 nuclear magnetic resonance (31P-NMR). The newly synthesized adsorbent (TIHP) was used to remove chromium oxyanions (Cr(VI)) from an aqueous solution. The batch technique was used to test many controlling factors, including the pH of the working aqueous solution, the amount of adsorbent dose, the initial concentration of Cr(VI), the interaction time, and the temperature. The desorption behaviour of Cr(VI) changes when it is exposed to the suggested foreign ions. The maximum adsorption capacity for Cr(VI) adsorption on the new adsorbent was 307.07 mg/g at room temperature. Freundlich’s isotherm model fits the adsorption isotherms perfectly. The kinetic results were well-constrained by the pseudo-second-order equation. The thermodynamic studies establish that the adsorption type was exothermic and naturally spontaneous.

A promising modified polyvinyl chloride for adsorption of boron: Preparation, adsorption kinetics, isotherm, and thermodynamic studies

“…These assays involved mechanically swirling 25 mL of a 150 mg/L synthetic B solution with varying concentrations of PVC‐MG‐NMDG over a set time at four different temperatures, with the stirring speed set at 200 rpm. Using Equation (2), we determined the maximal absorption capacity ( q max ) in mg/g and the distribution coefficient ( K d ) to evaluate the efficacy of the boron extraction procedure 50 : where C 0 and C e are the concentrations of boron (mg/L) at the initial and end of the reaction, V is the volume of the solution containing boron, and m is the weight of the dry PVC‐MG‐NMDG composite (g). K d , the distribution coefficient, is determined in the meantime by plugging V , the volume of the liquid phase (mL).…”

“…These assays involved mechanically swirling 25 mL of a 150 mg/L synthetic B solution with varying concentrations of PVC-MG-NMDG over a set time at four different temperatures, with the stirring speed set at 200 rpm. Using Equation (2), we determined the maximal absorption capacity (q max ) in mg/g and the distribution coefficient (K d ) to evaluate the efficacy of the boron extraction procedure 50 :…”

Thiocarbamoyl sulfamic acid‐derived mesoporous silica: a comprehensive study on selective adsorption of cobalt and lithium from spent lithium‐ion batteries

“…Since it reveals crucial details about the solute adsorption rate and reaction pathways, adsorption kinetics is a critical part of the sorption process. 60 A kinetics investigation of the sorption process, illustrated in Fig. 4(C), examined how much time was spent in contact with the PST-SA before any significant adsorption of cobalt(II) occurred.…”

“…This knowledge is indispensable for comprehending and optimizing the adsorption mechanism. Since it reveals crucial details about the solute adsorption rate and reaction pathways, adsorption kinetics is a critical part of the sorption process 60 . A kinetics investigation of the sorption process, illustrated in Fig.…”

A cost-effective o-toulidine-based Schiff base as an efficient sorbent for metal ion uptake from aqueous and soil samples: Synthesis, antimicrobial, and acute toxicity analyses

“…As low-cost adsorbents that develop a more economical and efficient treatment method (Gupta, Khan, and Singh, 2021), Schiff bases are great adsorbents for the extraction of heavy metal ions due to their excellent ligand nature and capacity of forming complexes (Tighadouini et al, 2021;Cyril et al, 2022). To remove the dissolved heavy metal ions, a batch technique was used under various conditions, such as contact time, pH, and temperature (Shahmohammadi-Kalalagh, 2011;Hassan et al, 2013;Alluhaybi et al, 2022).…”