Databases The following databases and respective searches were used. • Medline/PubMed: (Sweetening Agents/adverse effects OR Saccharin OR Cyclamate* OR Aspartame OR Acetosulfame OR Acesulfame) AND (Risk Factors OR Risk OR Risk Assessment OR Neoplasm* OR Carcinoma OR Cancer OR Carcinogenic) AND (Etiology/Broad[filter] OR Prognosis/Broad[filter] OR Comparative study OR Comparative studies). • Emb...

Abstract A sulfonic acid-functionalized trimethyl-substituted polyimide was synthesized by reacting 4,4?-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 3,5-diamino-2,4,6-trimethylbenzenesulfonic acid (TrMSA). The properties of 6FDA-TrMSA were compared to the related 6FDA-derived analogues made from 2,4,6-trimethylbenzene-1,3-diamine (6FDA-TrMPD) 3,5-diamino-2,4,6-trimethylbenzene ben...

The removal of acid gases from gas streams by using suitable solvent like alkanolamine, commonly referred to as gas sweetening, is a technology that has been in use industrially for over half a century. In this work artificial neural network (ANN) has been used to predict the equilibrium solubility of CO2 over the alkanolamine solvents N-methyldiethanolamine (MDEA) and 2-amino-2-methyl-1-propan...

the request for natural gas attention to its adaption with environment and less pollution than the other fossil fuels has the highest growth in last decades. in result this energy has high geopolitical importance. iran with has about 2.18 percent of total world reserves, the largest in the world. but couldn't played important role in the natural gas geopolitics and even it hasn't in b...

This paper includes the significant on-site experience of the authors related to problems faced in amine systems with fresh amine and their possible solutions in phases#2&3 of South Pars gas                complex. The amine system was designed as a closed circuit system with the primary objective of removing H2S, CO2, and other acidic components from gaseous hydrocarbon streams. Amine plant op...

use of zinc and iron oxide are common in the desulfurization process from natural gas. in thisresearch, after determinations of the size and specifications through tem and xrd for each of the metaloxides, two different size ratios were used, 0.66 for zinc oxide and 0.142 for iron oxide. further, absorption of sulfur compounds in gas (hydrogen sulfide (h2s), carbonyl sulfide (cos), methyl mercap...