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

Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA
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Nanomaterials 2020, 10(3), 578; https://doi.org/10.3390/nano10030578
Received: 1 March 2020 / Revised: 18 March 2020 / Accepted: 20 March 2020 / Published: 22 March 2020
(This article belongs to the Special Issue Investigation and Development of Graphene Oxide-Based Materials)
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. View Full-Text
Keywords: MTBE separation; functionalized carbon nanotube immobilized membranes (CNIM-f); graphene oxide immobilized membranes (GOIM); sweep gas membrane distillation (SGMD); flux enhancement MTBE separation; functionalized carbon nanotube immobilized membranes (CNIM-f); graphene oxide immobilized membranes (GOIM); sweep gas membrane distillation (SGMD); flux enhancement
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MDPI and ACS Style

Intrchom, W.; Roy, S.; Mitra, S. Removal and Recovery of Methyl Tertiary Butyl Ether (MTBE) from Water Using Carbon Nanotube and Graphene Oxide Immobilized Membranes. Nanomaterials 2020, 10, 578.

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