Preparation of MIL-101-nanoporous carbon as a new type of nanoadsorbent for H2S removal from gas stream

Oxidation Absorption of Gaseous H2S Using Fenton-Like Advanced Oxidation Systems

“…Hydrogen sulfide (H 2 S) is a well-known toxicant, which is often produced from many industrial processes, such as natural gas reforming, coal gasification, biogas production, coking, and flue gas treatment. H 2 S has a serious negative impact on the environment and human health and can also result in poisoning of the catalyst and corrosion of equipment. − Over the past few decades, many H 2 S removal technologies have been developed. − According to the principle of the removal process, H 2 S removal technologies can be divided into dry and wet methods. ,, The dry method mainly includes photocatalytic oxidation, plasma removal, ozonation, adsorption removal, etc. − The wet method mainly includes complex absorption, biological method, alkali absorption, ionic liquid absorption, catalytic oxidation, chemical oxidation, etc. − These technologies show good prospects in some respects, but most of them still have several shortcomings, such as high investment and operating costs, device corrosion, unstable systems, low security, secondary pollution problems, etc. , Thus, actively developing more economical and effective H 2 S treatment technologies has great scientific significance and industrial application value.…”

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

“…All hybrids showed a proper fitting with the Langmuir-Frendlich equation for the H 2 S uptake. [84] Table 1 shows a summary of the mentioned MOFs and their applications in the desulfurization of gas and liquid streams. The initial concentration of sulfur and the adsorption capacity are also listed.…”

Nylon-6–Mordenite Composite Membranes for Adsorption of Ethylene Gas Released from Chiquita Bananas

“…It was known that the Freundlich model simulated adsorption on a heterogeneous surface with the interaction between adsorbed molecules. 28 The Freundlich equation was given as q e = K F × P 1/n , where q e was the ethylene adsorbed amount per unit mass of adsorbed at equilibrium (mmol/g), P was the equilibrium pressure (kPa), K F was the Freundlich adsorption constant related to the adsorption capacity of the adsorbent (mmol/g), and n was a dimensionless constant, that could be utilized to elucidate the extent of adsorption and the adsorption intensity. Typically, the value of n was below or equal to unity, the process was chemisorption, but if greater than unity the process is favorable in physical adsorption.…”

“…Then, from the experimental adsorption data, a plot of absolute pressure/quantity adsorbed ( P / Q e ) versus absolute pressure ( P ) and a plot of ln­( Q e ) against ln­( P ) were drawn to investigate the adsorption mechanism for ethylene gas on mordenite and composite membranes. It was known that the Freundlich model simulated adsorption on a heterogeneous surface with the interaction between adsorbed molecules . The Freundlich equation was given as q e = K F × P 1/ n , where q e was the ethylene adsorbed amount per unit mass of adsorbed at equilibrium (mmol/g), P was the equilibrium pressure (kPa), K F was the Freundlich adsorption constant related to the adsorption capacity of the adsorbent (mmol/g), and n was a dimensionless constant, that could be utilized to elucidate the extent of adsorption and the adsorption intensity.…”