Optimization of Process Parameters for Reactive Separation of Gallic Acid

Abstract

Reactive extraction of gallic acid (GA) from aqueous solution was studied using extractant TOA and Aliquat 336 in hexanol and a comparative analysis were made for optimum extractant-diluent system with two factor central composite design. The model equations were developed using 13 experimentations, each with TOA and Aliquat 336. TOA and Aliquat 336 gave antagonistic and synergistic effects respectively for extraction of GA. The optimum conditions were observed as CTOA= 8.6 %, CGA0= 2.9 g/L and CALQ= 33.2 %, CGA0= 3 g/L with experimental extraction of 92.2 % and 96.5 % respectively. Lesser TOA and its non-toxicity for extraction of GA as compared to Aliquat 336 suggest TOA as better candidate in the prevailing conditions.

Nickel as a modifier of calcium oxalate: an in situ liquid cell TEM investigation of nucleation and growth

“…The precipitation reaction leading to the formation of CaOx is instantaneous and is not due to the electron beam given the constant electron dose rate, as previously demonstrated. 47,54 Fig. S1 † shows the results of the beamblank experiment, where after 300 s of beam-blanking a COT nanoparticle maintains its phase and size.…”

“…Calcium and oxalate ions encapsulated in GLC in a supersaturated aqueous environment undergo an instantaneous precipitation reaction, leading to the nucleation of a COT crystal. 46,47,54 Ni 2+ , present in a solution at a doping concentration, form Ni-water complexes via interactions with water. This presents an opportunity for Ni-water complexes to interact with the surface of the COT crystal, for example, with water that is part of the crystal structure and is located on the surface.…”

The recovery of Gallic acid with Triphenylphosphine Oxide and modelling with Artificial Intelligence

“…HGA was adsorbed onto Na-montmorillonite [14], and a coal-based activated carbon [15]. HGA was extracted by molecular imprinted polymers [16], ethanol [17], tributyl phosphate [18,19], trioctyl amine and aliquat 336 [20,21]. All of these separation methods have their advantages and disadvantages in terms of selectivity, simplicity, performance, and cost [22,23].…”

Reactive Extraction of Gallic Acid Using Tributyl Phosphate in Different Classes of Diluents

“…Athankar et al (2015) studied the reactive extraction of gallic acid with tri- n -caprylamine dissolved in hexanol . Rewatkar and group focused on physical and chemical extraction studies on gallic acid using various extractants (Aliquat 336, TBP, and TOA) in alcohols (hexanol and octanol) and also presented few optimization studies (RSM ,, and ANN). Pandey et al, have shown the effect of polarity of solvents (MIBK, octanol, kerosene, decane) and type of extractant (TOA, TBP) on the extraction of gallic acid .…”