Automated Monitoring of the Establishment of the Adsorption Equilibrium: Adsorption of Polyethylene from 1,2,4‐Trichlorobenzene onto a Zeolite at Temperature 140^∘C

Abstract

The automated procedure for the monitoring of the adsorption process in the solute-sorbent-solvent system has been elaborated. It uses commercially available instrument CRYSTAF model 200. The application of CRYSTAF enabled monitoring of adsorption of linear polyethylene with weight average molar masses of 2, 14, and 53 kg/mol from 1,2,4-trichlorobenzene onto zeolite SH-300 at temperature as high as 140°C. It is the authors' understanding that this is the first demonstration of an adsorption isotherms for polyethylene. The measurement with the CRYSTAF instrument reduces manual manipulations with dangerous solvents at high temperature and enables automated long-time monitoring of the concentration of the solute in an adsorption system.

A review on the development of liquid chromatography systems for polyolefins

“…NMR measurements confirmed the penetration of PE into the pores of zeolites SH-300 and CBV-780 [73]. The adsorption isotherms for PE in TCB/zeolite were experimentally measured [74]. The conditions to desorb the retained polymers from the zeolites were, however, not found.…”

Multidimensional analytical protocols for the fractionation and analysis of complex polyolefins

“…They used an isocratic system for the separation of PE‐PP blends. Depending on the type of stationary phase, full or partial adsorption of PE and PP was seen 67–69 . A summary of the elution behavior of PP and PE on different column packings is given in Ref.…”

“…[43] with permission of polymer char, Valencia, Spain) [Color figure can be viewed at wileyonlinelibrary.com] seen. [67][68][69] A summary of the elution behavior of PP and PE on different column packings is given in Ref. [70].…”

Evaluation of Contemporary Computational Techniques to Optimize Adsorption Process for Simultaneous Removal of COD and TOC in Wastewater

“…After that, many more robust and realistic AI-based techniques were developed in engineering to solve challenging problems and provide real-world implementations, whereas traditional or conventional methods were inadequate or unsuccessful [7, 9]. The application of AI techniques in the water treatment sector and optimization process has recently gained attention [10]. AI-based methods, such as knowledge-based structures and fuzzy logics (FIS), including adaptive neurofuzzy interface systems (ANFIS) [11], particle swarm optimization (PSO) [12, 13], genetic algorithm (GA) [14, 15], and artificial neural network (ANN) [16, 17], have been applied recently in water treatment and adsorption optimization systems.…”