Lutful Khan

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The purpose of this study was to explore the influence of organic matter in soils while removing heavy metals by sodium metabisulfite and EDTA solutions. The results obtained show that both sodium metabisulfite and sodium EDTA solutions have good removal efficiencies of zinc and lead. However, sodium metabisulfite was effective in extracting lead from a low(More)
We report the first experimental demonstration of a humidity insensitive polymer optical fiber Bragg grating (FBG), as well as the first FBG recorded in a TOPAS polymer optical fiber in the important low loss 850 nm spectral region. For the demonstration we have fabricated FBGs with resonance wavelength around 850 nm and 1550 nm in single-mode(More)
Resilient Packet Ring (RPR) is being devised as part of IEEE 802.17 standard, where fairness in bandwidth allocation among ring nodes, efficiency in resource utilization, and a low computational complexity are the main requirements. Although recent efforts have improved the performance of the RPR fairness algorithms to have acceptable steady-state behavior,(More)
The effect of ethylenediaminetetraacetic acid (EDTA) during electrokinetic decontamination (EKD) was investigated in this research. EDTA is a ligand that can form soluble complexes with precipitated heavy metals inside soil pores. Millpond sludge, primarily contaminated with lead (Pb) and zinc (Zn), was subjected to EKD with and without the presence of(More)
We have systematically measured the differential stress-optic coefficient, DeltaC, in a number of poly(methyl methacrylate) (PMMA) fibers drawn with different stress, ranging from 2 up to 27 MPa. DeltaC was determined in transverse illumination by measuring the dependence of birefringence on additional axial stress applied to the fiber. Our results show(More)
The effect of ethylenediaminetetraacetic acid (EDTA) in extracting heavy metal contaminants, namely Pb, Cd, Zn, and Mn, from soils with organometallic complexes, was explored using the coupled electric-hydraulic gradient assisted by ion exchange medium (CEHIXM) decontamination process. The experiments were conducted with a constant electric voltage of 50 DC(More)
This paper presents the results of a new process of soil decontamination termed as couple electric-hydraulic gradient assisted by ion exchange medium (CEHIXM) in which a hydraulic gradient is coupled with electric gradient in a non-conventional arrangement for the purpose of electrolysis and ion transport. A suitable ion exchange medium was used to capture(More)
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