Browsing by Author "Dr. Khaliq Majeed"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    RECOVERY OF 60 TONS/DAY OF SULFUR FROM ACID GAS
    (2023) Asad Jalal Lagari (FA19-CHE-011); Ahsan Haider (FA19-CHE-029); Hammad Anjum (FA19-CHE-039); Wilayat Ali (FA19-CHE-051); M Mubeen Javed (FA19-CHE-069); Dr. Khaliq Majeed
    This is the project of Sulfur Recovery Unit (SRU). Many processes are utilized for the desulfurization of acid gas to recover elemental sulfur but here we are more interested in Claus Process because of its efficiency and economy. The plant's efficiency and economy both are favorable conditions for the selection of the process. The purpose is to design a plant which produces 60 tons of elemental sulfur per day. The report includes the introduction of sulfur, production and processes, various processes used to recover sulfur, mass and energy balances over this particular recovery unit, design of all the equipment's, instrumentation, cost estimation, and safety of the plant. In short, this project is unique, crucial and very much important for educating current or future engineers because it focuses at the futuristic improvements to the Claus Process used to recover the elemental sulfur.
  • No Thumbnail Available
    Item
    Surface Modification of Layered Double Hydroxides for Reinforcement in Nitrile Butadiene Rubber
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2025) Ahmad Ali; CIIT/SP22-RCH-002/LHR; Dr. Khaliq Majeed; LHR TP 10007
    This study examines the reinforcement of the nitrile butadiene rubber (NBR) composites with Zinc-aluminium layered double hydroxides (LDH) with sodium dodecyl sulfate (SDS) to enhance filler-matrix compatibility and mechanical properties. The pure LDH was prepared by the co-precipitation method, after which modification was done on the surface by the SDS, to enhance the hydrophobicity and interfacial contact with NBR. The successful intercalation of the SDS and increased basal spacing in the modified LDH were verified by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Tensile tests on the modified and unmodified LDH-NBR composites showed that SDS modification had a significant enhanced dispersion behavior of the filler, which resulted in an enhancement of mechanisms. The force- elongation curves exhibited linear behavior to some elongation after which there was sudden material failure, which was regarded as tensile limits of the composite. Even though, the SDS-modified LDH-NBR composites exhibited better reinforcement than the unmodified systems, unexpected failure in higher elongations indicated that additional optimization is necessary in filler dispersion and bonding between phases. The study has given a valuable insight into the potential of SDS-modified LDH as a reinforcing agent in NBR composites, with future studies aiming to optimize the filler dispersion, investigate alternative methods of modification, and evaluate the long-term performance within different environmental conditions.