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  1. 1
    Batch process for bio-hydrogen production on small scale bioreactor from palm oil mill effluent (POME)

    Batch process for bio-hydrogen production on small scale bioreactor from palm oil mill effluent (POME) by Ahmadun, Fakhru'l-Razi, Nik Kob, Nik Norfadilah, Harun, Mohd Razif

    Published 2014
    “…The maximum hydrogen percentage in the biogas was 36% obtained at pH 5.5. Throughout the study, there no methane gas was observed in the evolved gas mixture.…”
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  2. 2
    Kinetic evaluation of biobutanol production by Clostridium Bejerincki using hydrolysate of pretreated lemongrass waste

    Kinetic evaluation of biobutanol production by Clostridium Bejerincki using hydrolysate of pretreated lemongrass waste by Md. Salleh, Madihah, Abdul Aziz, Suraini, Hua, Yeh Li, Ramanathan, Shankar

    Published 2015
    “…The optimum conditions for biobutanol production was determined at pH 5.5, temperature 35°C and initial reducing sugar concentration of 40 g/L. …”
    Conference or Workshop Item
  3. 3
    Enhancement of Biocellulose Production in Mixed Medium Culture

    Enhancement of Biocellulose Production in Mixed Medium Culture by Junaidi, Zakaria, Shahril, Mohamad, Siew, Kah Weng

    Published 2012
    “…In this experiment, it was ensured that all the samples had the initial temperature and pH of 30ºC and pH 5.5 respectively. The temperature was kept constant throughout the whole experiment while the changed pH value was taken as final pH at the end of the experiment for every sample. …”
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  4. 4
    Enzymatic hydrolysis of lignocellulosic biomass from pineapple leaves by using endo-1,4xylanase : Effect of pH, temperature, enzyme loading and reaction time

    Enzymatic hydrolysis of lignocellulosic biomass from pineapple leaves by using endo-1,4xylanase : Effect of pH, temperature, enzyme loading and reaction time by N. A. S. M., Rosdee, N., Masngut, S. M., Shaarani, S., Jamek, M. S. M., Sueb

    Published 2020
    “…The result has shown that the highest reducing sugar concentration of 70.9 mg/L was obtained both at pH 5.5 and 50 °C. In addition, the best enzyme loading and reaction time were recorded at 0.5% (w/v) and 45 min that resulted 60.1 mg/L and 72. 0 mg/L respectively.…”
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  5. 5
    The suitability of pelleted diets in the cage culture of the giant gourami, Osphronemus goramy (Lacepede)

    The suitability of pelleted diets in the cage culture of the giant gourami, Osphronemus goramy (Lacepede) by Ang, Kok Jee, Cheah, Sin Hock, Tan, G. H., Law, A. T.

    Published 1987
    “…The mean values for water quality parameters in the stUdy area cannot be considered ideal for aquaculture as it has a low pH (5.5), low alkalinity (7.0 mg) and low conductivity (24.7µMHOS).…”
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  6. 6
    A study on the potability of rural water systems in Tanah Merah and Pasir Puteh districts,Kelantan

    A study on the potability of rural water systems in Tanah Merah and Pasir Puteh districts,Kelantan by Affandi, Sharifah Mahani Syed Mahar

    Published 2003
    “…Parameters that have violations are, presence E.Coli (54.3%), pH (55.2%),colour (2.5%), turbidity (29.3%), free residual chlorine (86.7%), ammonia (3.7%), iron (3.7%) and phosphate (16.7%). …”
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