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Articles by M.S. Takriff
Total Records ( 4 ) for M.S. Takriff
  M.S. Takriff , N.H. Mansor and S.K. Kamarudin
  The chemical industry has undergone significant transformation during the past 25 years due to the increased cost of energy, increasingly stringent environmental regulations and global competition in product pricing and quality. The main objective of a process design is to create a process that is economical, safe, and environmentally benign throughout the whole lifetime of the plant. One of the most important engineering tools for addressing these issues is optimization. Modifications in plant design and operating procedures have been implemented to reduce costs and meet constraints, with an emphasis on improving efficiency and increasing profitability by using computer integrated manufacturing, or CIM. To apply optimization effectively in processing plant, both theory and practice of optimization must be understood. Appropriate meshing of the optimization technique and the model are essential for success in optimization. Over the last 10 years much effort has been devoted to the study of optimization strategies of either selected sections or entire chemical plant involving both continuous and integer variables. Several algorithms have been proposed and large numbers of research applications have been presented. However, only a few applications have been reported with process simulation. This study presents a review of the concepts/application of optimization techniques. In addition, it discusses optimization software and process simulator that offers the most potential for successful and reliable results.
  S.J.H.M. Yusof , M.S. Takriff , A. Amir , H. Kadhum , A.W. Mohammad and J. Jahim
  The addition of organic acids to the growth medium has been shown to stimulate solvent production and protect against the degeneration of ABE-producing clostridia. The objective of this study is to demonstrate the effect of introduction of butyric acid in the fermentation media on the solvent production by C. acetobutylicum NCIMB 619. In this study, batch cultures were carried out in Reinforced Clostridial Media (RCM) containing 0.0015 and 2.0 g L-1 of butyric acid, simultaneously with a control media (without addition of butyric acid) at 37°C for 72 h. It was found that the presence of butyric acid during the early stage of the fermentation process favor the solvent yield to glucose utilization up to 71%. By adding butyric acid, the concentration of acetone and butanol generated was improved significantly. In the case of 2.0 g L-1 butyric acid addition, acetone and butanol production was increased approximately 5 and 1.6 folds, respectively compared to control culture. The result obtained in this study showed that the addition of butyric acid not only promoted solvent production, but also induced butanol production at the initial stage of fermentation by C. acetobutylicum NCIMB 619.
  A.Y. Musa , A.A.H. Kadhum , A.B. Mohamad , M.S. Takriff , S.K. Kamarudin and A.R. Daud
  The corrosion rate for mild steel in 2.5 M H2SO4 at 30°C for different flow velocities was determined. Electrochemical techniques such as Tafel polarization and electrochemical impedance spectroscopy (EIS) were carried out to study the effects of flow velocity on corrosion rate of mild steel. The turbulent conditions experiments were simulated using rotating cylinder electrode (RCE). Results obtained from Tafel polarization and EIS were in good agreement. The study revealed that the mild steel corrosion rate decreased with increases in flow velocity due to improvement of the passivation by an increase of the oxygen supply. Corrosion potentials were shafted toward the cathodic values and the magnitude of the impedance was rose with flow velocities.
  M.S. Takriff , N.L. Jaafar and S.R.S. Abdullah
  The palm oil industry is a vital economic backbone of Malaysia since it is one of the world’s largest producer and exporter of palm oil despite creating enormous environmental problems, one being the huge generation of Palm Oil Mill Effluent (POME) during the oil extraction process. This highly polluting wastewater contains high concentrations of Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). Due to the high organic content of POME, biological treatment method seems to be a preferable solution. Therefore, a series of treatment comprising of fermentation, algae, biofilm and membrane system is proposed as one of the possible option to treat POME. This paper also reviews few configurations and modes of operation of several biofilm treatment systems as well as focusing on the application of a Fluidized Bed Biofilm Reactor (FBBR) in treating POME further down the proposed treatment chain.
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