Papers by Author: Mohamad Anuar Kamaruddin

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Authors: Said Zuliyana, Alrozi Rasyidah, Senusi Faraziehan, Mohamad Anuar Kamaruddin
Abstract: In this study, adsorption of binary metal (Ni(II) and Pb(II)) ions from aqueous solution by using natural (NC), acid-modified (AC) and base-modified (BC) clinoptilolite were investigated to determine the effects of adsorbent dosage, metal solution’s pH and initial metal solution concentration. From the adsorption studies, the optimum dosage of adsorbent was found to be 2.0g for all adsorbents (NC, AC and BC) specifically for removal of Pb(II). In contrast, optimum dosage of for removal of Ni(II) was found to be 2.0g for NC and 4.0g for both AC and BC, respectively. The average pH for Ni(II) and Pb(II) ion solutions were 6. It was further observed that, the percentage removal of Ni(II) was largely influenced by the presence of lead due to the preference of Pb2+ ions by the natural and modified clinoptilolites.
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Authors: Mohd Zawawi Mohamad Zulhelmi, Alrozi Rasyidah, Senusi Faraziehan, Mohamad Anuar Kamaruddin
Abstract: Biosorption process is considered as economical treatment to remove metal from the aqueous solution compared to other established methods. In this study, Saccharomyces cerevisiae was used as biosorbent and subject to immobilization process which consists of ethanol treatment for the removal of binary metals, lead (II) and nickel (II) from aqueous solution. Response surface methodology (RSM) was used to optimize effective parameters condition and the interaction of two or more parameters in order to obtain high removal of the binary metals. The parameters that have been studied were initial concentration of binary metals solution (10 - 60 mg/L), biosorbent dosage (0.2 - 1.0 g), pH (pH 2 - pH 6) and contact time (30 - 360 minutes) towards lead (II) and nickel (II) ions removal. Based on analysis of variance (ANOVA), biosorbent dosage, solution pH and contact time factor were found significant for both responses. Through optimization procedure, the optimum condition for lead (II) and nickel (II) ions removal were obtained at initial concentration of 10.0 mg/L, biosorbent dosage of 1.0 g, solution pH of pH 6, and contact time of 360.00 minutes, which resulted in 95.08 % and 21.09 % removal of lead (II) and nickel (II) ions respectively.
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Authors: Mohamad Anuar Kamaruddin, Mohd Suffian Yusoff, Abdul Hadi Ahmad
Abstract: This study evaluates the potential of recyclable items and biodegradable wastes recovered from selected locations of night markets across Seberang Perai Selatan district, Penang. Three different sizes of night market covering 9 study locations were evaluated based on waste types and the amount generated. By using the coning and quartering technique, it was observed that bigger sizes of night market had higher recyclable items potential. In particular, 177.41 kg/day of wastes discarded which equivalent to RM 104.05 worth of recyclable items. Small night market size was found to only generate 21.1 kg/day of wastes and equivalent to RM 13.55 worth of recyclable items. In terms of organics recovered, about 587 kg of wastes identified as brown organics. Meanwhile, it was recorded that green organics made up about 235 kg out of 822 kg total biodegradable wastes. This study demonstrates that night market has the potential for recovery of recyclable items and organic composting which can reduce the amount of solid waste being disposed at the landfills.
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