AUSTIN, Texas — Geosyntec Consultants is pleased to announce that Zahirul Islam, PhD, PEng, co-authored the ASCE Journal of Geotechnical and Geoenvironmental Engineering article, "Permeation of BTEX through Unaged and Aged HDPE Geomembranes," which was published in the August 2009 issue.
In the article, Zahirul and his co-author, Prof. Kerry Rowe of the GeoEngineering Centre at Queen's University in Kingston, Ontario, Canada, discuss the effects of aging high-density polyethylene (HDPE) geomembranes on the diffusion and partitioning of volatile organic compounds (VOCs) commonly found in landfill leachates [benzene, toluene, ethylbenzene, and xylenes (BTEX)]. Their results showed that the diffusion, partitioning, and permeation coefficients decreased with increased aging, and the decrease is related to the increase in geomembrane crystallinity due to aging. They have also established a relationship between partitioning, diffusion, and permeation coefficients with the geomembrane crystallinity, which could potentially be used to evaluate the migration of VOCs through HDPE geomembranes.
Zahirul earned his doctoral degree in civil engineering from Queen's University, Kingston. In addition, he received his Master's degree in civil engineering from the University of Western Ontario, London, Ontario, Canada; and Bachelor's degree in civil engineering from Bangladesh University of Engineering and Technology, Dhaka, Bangladesh. This article was part of his research work while pursuing his doctoral degree at Queen's University under the supervision of Prof. Rowe.