Optimization of sulfur adsorption over Ag-zeolite nanoadsorbent by experimental design method

Abstract

Environmental protection has mentioned the need to cut out all of fuels sulfur compounds. One of the most important processes that affect sulfur removal in atmospheric condition is the interaction of liquid fuels with solid sulfur removal adsorbents such as zeolites. To investigate the nano-AgX-zeolite efficiency for the sulfur adsorption process, a set of experimental tests was arranged and conducted by Box-Behnken design software, in an adsorption laboratory setup. The selected variables comprised metal percent, adsorption temperature and calcination temperature. The parameter levels were 0.5-10 %, 30-120 and 200-500°C, respectively. The experiment results were used to find the statistical model. The results demonstrate that the sulfur concentration level is 48.36 ppm in the last product at 83°C for adsorption temperature, 5.53 % for metal percent and 436°C for calcination temperature in constant pH and constant process time.

Synthesis of Nitrogen‐Doped CNT‐Based MOF Hybrids for Adsorptive Desulfurization of the Gas Stream

“…The different adsorbents are those used for the desulfurization of sulfur components in both the liquid and gas phase, including zeolites, metal-based materials, molecular sieves, and carbon-based sorbents. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Considering the unique pore structure and surface property, H 2 S is adsorbed by the best candidate adsorbents, i. e., MOFs to from the gas stream. [28][29][30][31][32][33][34] MOFs are recognized as a new group of porous materials which are contained the metal ions and organic ligands with mono and multi-dimensional structures.…”

“…Using solid adsorbents under mild conditions has achieved the interest of recent researchers regarding the several advantages, including high adsorption rate and selectivity, reversibility, and non‐corrosiveness. The different adsorbents are those used for the desulfurization of sulfur components in both the liquid and gas phase, including zeolites, metal‐based materials, molecular sieves, and carbon‐based sorbents [13–27] . Considering the unique pore structure and surface property, H 2 S is adsorbed by the best candidate adsorbents, i. e., MOFs to from the gas stream [28–34] …”

Enhanced Adsorption Desulfurization Performance over Mesoporous ZSM-5 by Alkali Treatment

“…In the research of ADS technology, development of the adsorbent occupies the highest priority. At present, various types of adsorbents, including zeolites, − activated alumina, boron nitride, − and activated carbon (AC), − have been well studied. Because of the advantages of porous structure and modified surface, zeolites are considered to be suitable adsorbents for the ADS process.…”