Advanced oxidation of methyl-tertiary butyl ether: pilot study findings and full-scale implications

In this study, the removal of methyl tertiary-butyl ether (MTBE) from contaminated groundwater using advanced oxidation technology was investigated. The UV/H2O2 treatment process was applied to remove MTBE from two Saudi groundwater sources that have different quality characteristics with regard to their contents of inorganic species such as chloride, bromide, sulfates and alkalinity. MTBE was spiked into water samples collected from the two sources to a concentration level of about 250 μg/L. A 500 mL bench-scale forced-liquid circulation photoreactor was used to conduct the experiments. Two different UV lamps were utilized: 15 Watt low pressure (LP) and 150 Watt medium pressure (MP). Results of the study showed that the UV/H2O2 process removed more than 90% of MTBE in 20 minutes when the MP lamp was used at an MTBE/H2O2 molar ratio of 1:200. The results also showed that groundwater sources with higher levels of radical scavengers such as alkalinity, bromide, nitrate and sulfate showed lower rate of MTBE removal.

Download Full-text

APPLICATION OF IR SPECTROSCOPY IN THE STUDY OF MINERAL OIL

Oil and Gas Studies ◽

10.31660/0445-0108-2017-1-91-95 ◽

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.

Download Full-text

Physiologically based pharmacokinetic rat model for methyl tertiary-butyl ether; comparison of selected dose metrics following various MTBE exposure scenarios used for toxicity and carcinogenicity evaluation

Toxicology ◽

10.1016/j.tox.2010.06.003 ◽

2010 ◽

Vol 275 (1-3) ◽

pp. 79-91 ◽

Cited By ~ 8

Author(s):

Susan J. Borghoff ◽

Horace Parkinson ◽

Teresa L. Leavens

Keyword(s):

Rat Model ◽

Methyl Tertiary Butyl Ether ◽

Butyl Ether ◽

Tertiary Butyl ◽

Physiologically Based Pharmacokinetic ◽

Physiologically Based ◽

Dose Metrics

Download Full-text

Layer-by-layer polyamide thin film nanocomposite membrane: synthesis, characterization and using as pervaporation membrane to separate methyl tertiary butyl ether/methanol mixture

Journal of Polymer Research ◽

10.1007/s10965-021-02479-0 ◽

2021 ◽

Vol 28 (4) ◽

Author(s):

Farzaneh Alibakhshian ◽

Mahdi Pourafshari Chenar ◽

Morteza Asghari ◽

Mohammad Reza Moradi

Keyword(s):

Thin Film ◽

Nanocomposite Membrane ◽

Methyl Tertiary Butyl Ether ◽

Layer By Layer ◽

Butyl Ether ◽

Membrane Synthesis ◽

Tertiary Butyl ◽

Pervaporation Membrane ◽

Methanol Mixture ◽

Thin Film Nanocomposite

Download Full-text

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

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.1501076 ◽

2002 ◽

Vol 125 (1) ◽

pp. 344-350 ◽

Cited By ~ 13

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.

Download Full-text

DISPOSITION, METABOLISM, AND TOXICITY OF METHYL TERTIARY BUTYL ETHER, AN OXYGENATE FOR REFORMULATED GASOLINE

Journal of Toxicology and Environmental Health ◽

10.1080/009841096161609 ◽

1996 ◽

Vol 47 (5) ◽

pp. 453-464 ◽

Cited By ~ 19

Author(s):

Duncan E. Hutcheon

Keyword(s):

Methyl Tertiary Butyl Ether ◽

Butyl Ether ◽

Tertiary Butyl ◽

Reformulated Gasoline

Download Full-text

Remediation of MTBE-contaminated groundwater by integrated circulation wells and advanced oxidation technologies

Water Science & Technology Water Supply ◽

10.2166/ws.2017.128 ◽

2017 ◽

Vol 18 (2) ◽

pp. 399-407 ◽

Cited By ~ 2

Author(s):

Bassam Tawabini ◽

Mohammed Makkawi

Keyword(s):

Groundwater Remediation ◽

Treatment Time ◽

Shallow Groundwater ◽

Advanced Oxidation ◽

Shallow Aquifer ◽

Contaminated Groundwater ◽

Butyl Ether ◽

Tertiary Butyl ◽

Industrial Facilities ◽

Environmental Threats

Abstract The proximity of shallow groundwater systems to sources of contamination usually exposes them to severe environmental threats. Hazardous pollutants that leak from gas stations, landfills, and industrial facilities may eventually reach the underneath shallow groundwater aquifers, posing risks to human health and the environment. Cleaning contaminated groundwater sources has always been a challenge to the local authorities. This is even more challenging when dealing with difficult pollutants such as methyl tertiary butyl ether (MTBE) due its high solubility in water, poor biodegradability, and poor adsorption onto solids. This study aims to assess the efficiency of a pilot groundwater remediation system to treat a shallow aquifer contaminated with MTBE. The in-house designed and fabricated pilot system combines the technology of circulation wells and UV-based advanced oxidation technology for the breakdown and removal of MTBE from water. An ultraviolet/hydrogen peroxide (UV/H2O2) process was used in this study to remove MTBE from water. The concentration of MTBE was reduced from approximately 1,400 μg/L to as low as 34 μg/L within 30 minutes, with a treatment efficiency of about 98%. The study also assesses the effects of the UV intensity and the treatment time needed to remove the target pollutant.

Download Full-text