Effects of preparation parameters on the textural features of a granular zeolite/activated carbon composite material synthesized from elutrilithe and pitch

Adsorption Equilibrium and Kinetics of the Removal of Ammoniacal Nitrogen by Zeolite X/Activated Carbon Composite Synthesized from Elutrilithe

“…The preparation of zeolite X/activated carbon composite was based on the procedure reported by Ma et al [25]. The following is a typical synthesis example: the mixture of elutrilithe and 35 wt.% of pitch was used as starting material and extruded into cylinders (3.0 mm × 6.0 mm).…”

“…So much solid waste not only occupies a large area of farmland but also causes ecological damage, such as air pollution and water pollution. However, elutrilithe is a kaolinite-rich gangue containing aluminosilicate, according to the chemical composition of the raw material, and zeolites/activated carbon composites can be obtained, by a process consisting of carbonization, activation, and subsequent hydrothermal transformation of aluminosilicate in alkaline solution [25]. This composite material has the combination of the adsorptive properties of zeolite and activated carbon, and its applications have emerged in the wastewater treatment industries [26].…”

Removal of Cr3+ in Aqueous Solutions by Zeolite A/Activated Carbon Composite Synthesized from Elutrilithe

“…The zeolite A/activated carbon composite (A/AC) was prepared by using elutrilithe as raw material according to the method described in our previous work [10]. The mixture of elutrilithe and 25 wt.% of pitch was used as starting material and extruded into a cylinder (3.0 mm × 6.0 mm).…”

“…Natural zeolites, which have the lower cost and good ion exchange ability, are employed as the promising adsorbents [9]. In order to take full advantage of the merits of these two materials, our group successfully synthesized zeolites/activated carbon composite by using the dumped elutrilithe [10] and these prepared materials were applied in the wastewater treatments such as phenol adsorption by zeolite X/activated carbon composite [11] and Ni 2+ removal by zeolite A/activated carbon composite [12].…”

CH4/N2 Adsorptive Separation on Zeolite X/AC Composites

“…In general, activated carbons have higher equilibrium selectivity for CH 4 over N 2 but smaller adsorption capacities for CH 4 than zeolites. As a consequence, in order to integrate the advantages of both zeolite and activated carbon in industrial application, increasingly attentions have been concentrated on the synthesis of the novel porous material of zeolite/AC composites in recent years [25,26]. Meanwhile, the environmental application such as wastewater treatment as well as gas separation using of zeolite/AC composites has been explored preliminarily [27,28].…”