The rapid detection of methyl tert-butyl ether (MtBE) in water using a prototype gas sensor system

2005 ◽  
Vol 52 (8) ◽  
pp. 117-123 ◽  
Author(s):  
B.P.J. de Lacy Costello ◽  
P.S. Sivanand ◽  
N.M. Ratcliffe ◽  
D.M. Reynolds
Keyword(s):  
Sensor Arrays ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Potential Threat ◽  
Tertiary Butyl ◽  
The Usa ◽  
On Line ◽  
Low Levels ◽  
Gasoline Additive ◽  
Metal Oxide Sensor

The gasoline additive Methyl-tertiary-Butyl Ether (MtBE) is the second most common contaminant of groundwater in the USA and represents an important soil contaminant. This compound has been detected in the groundwater in at least 27 states as a result of leaking underground storage facilities (gasoline storage tanks and pipelines). Since the health effects of MtBE are unclear the potential threat to drinking water supplies is serious. Therefore, the ability to detect MtBE at low levels (ppb) and on-line at high-risk groundwater sites would be highly desirable. This paper reports the use of ‘commercial’ and metal oxide sensor arrays for the detection of MtBE in drinking and surface waters at low ppb level (μg.L−1 range). The output responses from some of the sensors were found to correlate well with MtBE concentrations under laboratory conditions.

Nafta Chapter Eleven Arbitral Tribunal: Methanex Corporation V. United States of America, Final Award on Jurisdiction and Merits

2005 ◽  
Vol 44 (6) ◽  
pp. 1345-1464 ◽  
Keyword(s):  
United States ◽  
United States Of America ◽  
Trade Agreement ◽  
The United States ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
The North ◽  
The Usa ◽  
Gasoline Additive

The Claimant, Methanex Corporation (“Methanex“), initiated this arbitration against the Respondent, the United States of America (the “USA“), on 3rd December 1999 under Chapter 11 of the North American Free Trade Agreement (“NAFTA“), as a Canadian investor. As formulated in its Original Statement of Claim of 3rd December 1999, Methanex claimed compensation from the USA in the amount of approximately US$ 970 million (together with interest and costs), resulting from losses caused by the State of California's ban on the sale and use of the gasoline additive known as ‘ ‘MTBE'’ (methyl tertiary-butyl ether) which was then intended to become legally effective on 31st December 2002. MTBE is a synthetic, volatile, colourless and organic ether, with a turpentine-like taste and odour. Methanex was (and remains) the world's largest producer of methanol, a feedstock for MTBE. It has never produced or sold MTBE.

scholarly journals SIRT1 attenuated oxidative stress induced by methyl tert-butyl ether in HT22 cells

2017 ◽  
Vol 6 (3) ◽  
pp. 290-296 ◽  
Author(s):  
Junxiang Ma ◽  
Li Chen ◽  
Dongmei Song ◽  
Yuanyuan Zhang ◽  
Tian Chen ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Nervous System ◽  
Methyl Tert Butyl Ether ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Unleaded Gasoline ◽  
Ht22 Cells ◽  
Tertiary Butyl ◽  
Gasoline Additive

Methyl tertiary-butyl ether (MTBE), an unleaded gasoline additive, can lead to oxidative stress and then injury to the nervous system after long-term exposure. SIRT1, a NAD+-dependent histone deacetylase, can play a neuroprotective role in brain injury induced by MTBE.

scholarly journals Removal and Recovery of Methyl Tertiary Butyl Ether (MTBE) from Water Using Carbon Nanotube and Graphene Oxide Immobilized Membranes

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 578
Author(s):  
Worawit Intrchom ◽  
Sagar Roy ◽  
Somenath Mitra
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
High Performance ◽  
Water Solubility ◽  
High Water ◽  
Membrane Distillation ◽  
Methyl Tert Butyl Ether ◽  
Transfer Coefficients ◽  
Butyl Ether ◽  
Tertiary Butyl

Methyl tert-butyl ether (MTBE) is a widely used gasoline additive that has high water solubility, and is difficult to separate from contaminated ground and surface waters. We present the development in functionalized carbon nanotube-immobilized membranes (CNIM-f) and graphene oxide-immobilized membranes (GOIM) for enhanced separation of MTBE via sweep gas membrane distillation (SGMD). Both types of modified membranes demonstrated high performance in MTBE removal from its aqueous mixture. Among the membranes studied, CNIM-f provided the best performance in terms of flux, removal efficiency, mass transfer coefficients and overall selectivity. The immobilization f-CNTs and GO altered the surface characteristics of the membrane and enhanced partition coefficients, and thus assisted MTBE transport across the membrane. The MTBE flux reached as high as 1.4 kg/m2 h with f-CNTs, which was 22% higher than that of the unmodified PTFE membrane. The maximum MTBE removal using CNIM-f reached 56% at 0.5 wt % of the MTBE in water, and at a temperature of 30 °C. With selectivity as high as 60, MTBE recovery from contaminated water is very viable using these nanocarbon-immobilized membranes.

scholarly journals Children of the Corn

2003 ◽  
Vol 125 (01) ◽  
pp. 40-43
Author(s):  
Gayle Ehrenman
Keyword(s):  
New York ◽  
The United States ◽  
National Standard ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Renewable Fuel ◽  
Gasoline Additive ◽  
The Cost ◽  
Ethanol Fraction

This article discusses that ethanol is a renewable fuel that is already well-entrenched and poised to spread into new arenas. Early in the automobile era, ethanol actually had a chance of becoming the primary fuel instead of the alternative. EI0 accounts for 10 percent of all gasoline sold in the United States. Its major advantages are that the ethanol fraction, derived from corn or other biomass, is reliable and renewable, and it is clean burning, composed of carbon, hydrogen, and oxygen. Ethanol is set to grab an even greater percentage of the gasoline blending market, due to the banning of the most commonly used gasoline additive, methyl tertiary butyl ether, in California, New York. In order for ethanol to become more widely used as a fuel, either the cost of production must be significantly reduced or a national standard, mandating the use of renewable fuels and providing incentives for their use, will have to be issued.

Influence of gasoline hydrocarbons on methyl tert-butyl ether biotreatment in fluidized bed bioreactors

2002 ◽  
Vol 2 (2) ◽  
pp. 223-228
Author(s):  
W.T. Stringfellow ◽  
K.-C. Oh
Keyword(s):  
Fluidized Bed ◽  
Inverse Correlation ◽  
Methyl Tert Butyl Ether ◽  
Contaminated Groundwater ◽  
Butyl Ether ◽  
Strong Inhibitor ◽  
Tert Butyl ◽  
Gasoline Hydrocarbons ◽  
Gasoline Additive

Fluidized bed bioreactors (FBRs) are frequently used for the treatment of gasoline contaminated groundwater. Due to changes in gasoline formulations in the last decade, gasoline contaminated groundwater may also contain significant quantities of methyl tert-butyl ether (MTBE), a recalcitrant gasoline additive. It has been shown that MTBE is biodegradable and there is interest in determining if MTBE contaminated groundwater can be biologically treated using FBR technology. We examined the biodegradation of MTBE in FBRs treating contaminated groundwater and establish that there was an inverse correlation between total petroleum hydrocarbon (TPH) loading and MTBE treatment efficiency. Follow-up laboratory studies demonstrated that toluene, a component of TPH, is a strong inhibitor of MTBE biotreatment in FBRs.

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