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

2017 ◽  
Vol 18 (2) ◽  
pp. 399-407 ◽  
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.

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

2008 ◽  
Vol 57 (6) ◽  
pp. 403-418
Author(s):  
Sunil Kommineni ◽  
Zaid Chowdhury ◽  
Michael Kavanaugh ◽  
Dhananjay Mishra ◽  
Jean-Philippe Crouè
Keyword(s):  
Pilot Study ◽  
Advanced Oxidation ◽  
Full Scale ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

Treatment of water contaminated with methyl tertiary butyl ether using UV/chlorine advanced oxidation process

2015 ◽  
Vol 57 (42) ◽  
pp. 19939-19945 ◽  
Author(s):  
Amana Jemal Kedir ◽  
Bassam Tawabini ◽  
Abdulaziz Al-Shaibani ◽  
Alaadin A. Bukhari
Keyword(s):  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

The impact of groundwater quality on the removal of methyl tertiary-butyl ether (MTBE) using advanced oxidation technology

2009 ◽  
Vol 60 (8) ◽  
pp. 2161-2165 ◽  
Author(s):  
B. Tawabini ◽  
N. Fayad ◽  
M. Morsy
Keyword(s):  
Advanced Oxidation ◽  
Molar Ratio ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
H2o2 Treatment ◽  
Tertiary Butyl ◽  
Inorganic Species ◽  
Advanced Oxidation Technology ◽  
Oxidation Technology ◽  
The Impact

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.

Health risk assessment of groundwater contaminated with methyl tertiary butyl ether (MTBE)

1999 ◽  
Vol 39 (10-11) ◽  
pp. 305-310 ◽  
Author(s):  
W. R. Hartley ◽  
A. J. Englande ◽  
D. J. Harrington
Keyword(s):  
Drinking Water ◽  
Water Movement ◽  
Monitoring Program ◽  
Shallow Groundwater ◽  
Oral Exposure ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Water Supplies ◽  
Tertiary Butyl ◽  
Carcinogenic Potential

Methyl tertiary butyl ether (MTBE), a volatile oxygenate commonly used in fuels, is a frequent contaminant of some shallow groundwater. Based on limited reporting, concentrations of MTBE in drinking water were generally less than 10 μg/L but excursions up to 770 μg/L have been reported. Based on current MTBE toxicological data with emphasis on carcinogenic potential, and reproductive and developmental effects, a maximum drinking water level of 100 μg MTBE/L is suggested. This recommended advisory level takes into consideration the equivocal evidence of the carcinogenicity of MTBE in humans and low potency in an oral exposure animal study. Definitive conclusions regarding health risks to the general population from MTBE contamination of drinking water are not possible due to a paucity of monitoring data. There is increased evidence of contamination of storm water and shallow groundwater from primarily, nonpoint sources. Considering MTBE mobility and stability in water, movement to deep groundwater and drinking water supplies seems probable. In light of projected increased MTBE use, there is a need for a more rigorous monitoring program to define the frequency of MTBE contamination of drinking water supplies and to develop risk management policies.

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.

Evolution of groundwater chemistry on shallow aquifer of Yogyakarta City urban area

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Doni Prakasa Eka Putra
Keyword(s):  
Shallow Groundwater ◽  
Unconfined Aquifer ◽  
Groundwater Chemistry ◽  
Shallow Aquifer ◽  
Nitrate Content ◽  
New Business ◽  
Urban Settlements ◽  
A Minor ◽  
New Settlements ◽  
Yogyakarta City

Since 1980s, accelerated by urbanization, Yogyakarta City was shifting to many directions defined by main road networks and service centres. Urbanization has transformed rural dwellings to become urban settlements and generated urban agglomeration area. Until now, new business centres, education centres and tourism centres are growing hand in hand with new settlements (formal or informal) without proper provision of water supply and sanitation system. This condition increase the possibility of groundwater contamination from urban wastewater and a change of major chemistry of groundwater as shallow unconfined aquifer is lying under Yogyakarta City. To prove the evolution of groundwater chemistry, old data taken on 1980s were comparing with the recent groundwater chemistry data. The evaluation shows that nitrate content of groundwater in 1980s was a minor anion, but nowadays become a major anion, especially in the shallow groundwater in the centre of Yogyakarta City. This evidence shows that there is an evolution of groundwater chemistry in shallow groundwater below Yogyakarta City due to contamination from un-proper on-site sanitation system. Keywords: Urbanization, Yogyakarta city, rural dwellings, settlements, agglomeration, contamination, groundwater

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