Effectiveness of high-silica zeolites for the adsorption of methyl tertiary-butyl ether from natural water

2005 ◽  
Vol 5 (5) ◽  
pp. 83-91 ◽  
Author(s):  
D.R.U. Knappe ◽  
A.A. Rossner Campos
Keyword(s):  
Natural Organic Matter ◽  
Activated Carbons ◽  
Methyl Tertiary Butyl Ether ◽  
Ultrapure Water ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Adsorption Capacities ◽  
High Silica ◽  
High Silica Zeolites ◽  
Adsorption Systems

MTBE adsorption isotherm data were collected for a matrix of high-silica zeolites with different pore sizes (ZSM-5/silicalite, mordenite, beta, Y), exchangeable cations (H+, Na+, NH4+), and hydrophobicities (SiO2/Al2O3 ratios). MTBE adsorption capacities of high-silica zeolites were compared with those of one coconut-shell-based and two coal-based granular activated carbons (GACs) as well as a carbonaceous resin. Isotherm experiments were conducted in ultrapure water buffered at pH 7.2 and in Tar River water (Greenville, NC) to determine the effects of co-adsorbing and preloaded natural organic matter (NOM) on MTBE adsorption. The results of this study showed that (1) high-silica zeolites with small pores (ZSM-5/silicalite, mordenite) exhibit higher MTBE adsorption capacities than GACs, (2) NOM has little or no effect on MTBE adsorption capacities of ZSM-5/silicalite zeolites, and (3) equilibrium model results suggest that silicalite-based adsorption systems are cost-competitive with activated-carbon-based adsorption systems while offering operational advantages such as longer adsorber life and possibly greater ease of regeneration.

scholarly journals Influence of water on the retention of methyl tertiary-butyl ether by high silica ZSM-5 and Y zeolites: a multidisciplinary study on the adsorption from liquid and gas phase

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 86997-87006 ◽  
Author(s):  
A. Martucci ◽  
I. Braschi ◽  
C. Bisio ◽  
E. Sarti ◽  
E. Rodeghero ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Ambient Temperature ◽  
Gas Phase ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Y Zeolites ◽  
Tertiary Butyl ◽  
Multidisciplinary Study ◽  
Influence Of Water ◽  
High Silica

Ambient temperature adsorption isotherms have been determined for methyltert-butyl ether (MTBE) in aqueous solutions on high silica ZSM-5 and Y zeolites which differ from each other in framework topology and pore window apertures.

APPLICATION OF IR SPECTROSCOPY IN THE STUDY OF MINERAL OIL

2017 ◽  
pp. 91-95
Author(s):  
E. I. Grushova ◽  
A. .. Al Razuqi ◽  
E. S. Chaiko ◽  
O. A. Miloserdova
Keyword(s):  
Ir Spectroscopy ◽  
Group Composition ◽  
Mineral Oil ◽  
Vacuum Distillate ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Mineral Oils ◽  
Modifying Additive

IR spectroscopy investigated structural and group composition of base mineral oils isolated from the vacuum distillate by selective purification of N-methylpyrrolidone and the low temperature dewaxing in the presence of a solvent. The role of the latter was carried out by the systems acetone - toluene, acetone - methyl tertiary butyl ether, methyl ethyl ketone - toluene, acetone - toluene - modifying additive. It was shown that the chemical composition of the group of base oils and slack waxes is defined as the nature of the solvent to the dewaxing, and oils sequence of purification steps.

The Effect of Adding Oxygenated Compounds to Gasoline on Automotive Exhaust Emissions

2002 ◽  
Vol 125 (1) ◽  
pp. 344-350 ◽  
Author(s):  
S. G. Poulopoulos ◽  
C. J. Philippopoulos
Keyword(s):  
Octane Number ◽  
Combustion Engine ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Research Octane Number ◽  
Oxygenated Compounds ◽  
Reid Vapor Pressure ◽  
Three Way Catalyst ◽  
Unregulated Emissions

In the present work, the effect of adding ethanol or methyl tertiary butyl ether (MTBE) to gasoline on the regulated and unregulated emissions from an internal combustion engine with a typical three-way catalyst was studied. The addition of ethanol to fuel (10% w/w) increased both the research octane number and the Reid vapor pressure of the fuel, whereas adding 11% w/w MTBE caused an increase only in the research octane number of the fuel. When the fuel contained MTBE, less hydrocarbons, carbon monoxide, and acetaldehyde were emitted in the tailpipe. The increased emissions of acetaldehyde and ethanol were the main disadvantages of using ethanol.

Methyl tertiary-butyl ether mode of action for cancer endpoints in rodents

2007 ◽  
Vol 47 (2) ◽  
pp. 156-165 ◽  
Author(s):  
George Cruzan ◽  
Susan J. Borghoff ◽  
Ann de Peyster ◽  
Gordon C. Hard ◽  
Michael McClain ◽  
...  
Keyword(s):  
Mode Of Action ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

Simulation of Methyl Tertiary Butyl Ether Production in Catalytic Distillation

2012 ◽  
Vol 263-266 ◽  
pp. 444-447
Author(s):  
Jin Nan Chen ◽  
Yu Chun Zhang ◽  
Xing Yong Sun
Keyword(s):  
Relative Error ◽  
Conversion Rate ◽  
Model Development ◽  
Methyl Tertiary Butyl Ether ◽  
Reflux Ratio ◽  
Distillation Process ◽  
Butyl Ether ◽  
Catalytic Distillation ◽  
Design Data ◽  
Tertiary Butyl

The software of the catalytic distillation process of methyl tertiary butyl ether was developed by using Process Simulation System Platform. The isobutylene conversion rate was calculated by using the catalytic distillation software. The relative error of isobutylene conversion rate between the simulation results and the design data from the China Petroleum Hohhot Petrochemical Co. was less than 5%. The relative error satisfies industrial design requirements. At present, enterprise workers use this software to learn how to operate the catalytic distillation process. The catalytic distillation software is further used to study the influence of reaction temperature and reflux ratio on the isobutylene conversion rate which can be used for future empirical model development and control studies.

Estimation of Respiratory Irritancy from Inhaled Methyl Tertiary Butyl Ether in Mice

1994 ◽  
Vol 6 (6) ◽  
pp. 563-569 ◽  
Author(s):  
Jeffrey S. Tepper ◽  
Mette C. Jackson ◽  
John K. McGee ◽  
D. L. Costa ◽  
J. A. Graham
Keyword(s):  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

Two-generation Reproductive Toxicity Study of Methyl Tertiary-butyl Ether (MTBE) in Rats

1997 ◽  
Vol 17 (S1) ◽  
pp. S13-S19 ◽  
Author(s):  
C. Bevan ◽  
T. L. Neeper-Bradley ◽  
R. W. Tyl ◽  
L. C. Fisher ◽  
R. D. Panson ◽  
...  
Keyword(s):  
Reproductive Toxicity ◽  
Toxicity Study ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl
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