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Mimi Suliza Muhamad Nuramidah Hamidon Mohd Razman Salim Zulkifli Yusop Woei Jye Lau Tony Hadibarata 《Water, air, and soil pollution》2018,229(7):222
In this work, the effects of various operating parameters (pressure, pH, BPA concentration, and filtration time) toward bisphenol A (BPA) removal via ultrafiltration (UF) membrane system were investigated using response surface methodology (RSM). Historical data design of RSM was used to obtain the interaction between variables and response as well as optimizing the process. The analysis of variance (ANOVA) showed that the third-order polynomial model was significant in which pH and filtration time were identified as significant terms that influence BPA removal. The 3D response surface plots revealed the two-factor interaction between independent and dependent variables. The optimization process of the model predicted optimum conditions of 99.61% BPA removal at 1 bar, pH 6.7, 10 μg/L BPA concentration, and 10-min filtration time. The predicted optimum conditions for BPA removal were consistent with the obtained experimental values, indicating reliable application of historical data design RSM for modeling BPA removal in UF membrane system. 相似文献
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Tony Hadibarata Abdull Rahim Mohd Yusoff Risky Ayu Kristanti 《Water, air, and soil pollution》2012,223(8):4669-4677
The decolorization of the recalcitrant dye Remazol Brilliant Blue R (RBBR) by the culture filtrate of Polyporus sp. S133 and the effect of various environmental factors were investigated. Both biodegradation and biosorption were playing an important role in bioremoval mechanisms. The highest biosorption of RBBR in Polyporus sp. S133 was shown by all carbon sources such as sucrose, glucose, fructose, and starch. No biosorption was shown by the addition of aromatic compounds and metal ions; 97.1?% RBBR decolorization was achieved in 120-rpm culture for 96?h, as compared to 49.5?% decolorization in stationary culture. Increasing the shaking rotation of the culture to more than 120?rpm was proven to give a negative effect on decolorization. The highest production of laccase was shown at pH 4 and constantly decreases when the pH level increases. The addition of glucose, ammonium tartrate, Cu2+, and protocatechuic acid was the suitable environmental condition for RBBR decolorization. There was a positive relationship between all environmental conditions and laccase production in the decolorization of RBBR. 相似文献
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Tony Hadibarata Abdull Rahim Mohd Yusoff Azmi Aris Salmiati Topik Hidayat Risky Ayu Kristanti 《Water, air, and soil pollution》2012,223(3):1045-1054
A newly isolated white-rot fungus, Armillaria sp. strain F022, was isolated from the decayed wood in a tropical rain forest. Strain F022 was capable of decolorizing a
variety of synthetic dyes, including azo, triphenylmethane, and anthraquinone dyes, with an optimal efficiency of decolorization
obtained when dyes added after 96 h of culture, with the exception of Brilliant Green. All of the tested dyes were decolorized
by the purified laccase in the absence of any redox mediators, but only a few were completely removed, while others were not
completely removed even when decolorization time was increased. The laccase, with possible contributions from unknown enzymes,
played a role in the decolorization process carried out by Armillaria sp. F022 cultures, and this biosorption contributed a negligible part to the decolorization by cultures. The effect of dye
to fungal growth was also investigated. When dyes were added at 0 h of culture, the maximum dry mycelium weight (DMW) values
in the medium containing Brilliant Green were 1/6 of that achieved by the control group. For other dyes, the DMW was similar
with control. The toxic tolerance of dye for the cell beads was excellent at least up to a concentration of 500 mg/l. The
optimum conditions for decolorization of three synthetic dyes are at pH 4 and 40°C. 相似文献
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Hadibarata Tony Yusoff Abdull Rahim Mohd Kristanti Risky Ayu 《Water, air, and soil pollution》2012,223(2):933-941
Utilization of microbes including white-rot fungi and bacterial strains for decolorization of synthetic dyes is one promising
strategy of an environmentally friendly and cost-competitive alternative to physico-chemical decomposition processes for treating
industrial effluents. In this study, the biodegradation ability of the white-rot fungi Polyporus sp. S133 that produce high laccase was investigated in order to decolorize anthraquinone-type dye. Parameter including pH,
temperature, and non-ionic surfactant were used to comparatively study the decolorizing effects on Remazol Brilliant Blue
R (RBBR). The purified laccase totally decolorized 200 mg L−1 initial concentration of RBBR dye when only 1.5 U L−1 of laccase was used in the reaction mixture. The optimal decolorization rates were achieved at pH 5 and at a temperature
of 50°C. N-hydroxybenzotriazole, a small molecular weight redox mediator, was found to accelerate the decolorization. Tween 20 inhibited
the decolorization while Tween 80 and Brij 35 showed no inhibition effect. Two compounds were identified as the intermediates
(m/z 304.3 and m/z 342.2). These results suggest that laccase from Polyporus sp. S133 is a powerful tool for the decolorization of anthraquinone dyes. A pathway for the metabolism of the RBBR by laccase
of Polyporus sp S133 was proposed. These proposed pathways could contribute to a better comprehension of the mechanisms used by oxidative
enzymes to transform organic compounds. 相似文献
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Tony Hadibarata Ameer Badr Khudhair Mohd Razman Salim 《Water, air, and soil pollution》2012,223(5):2201-2208
Polyporus sp. S133 fungi were selected based on their ability to degrade anthracene in liquid media. The degradation efficiency of anthracene increased by adding 0.5% Tween 80 to reach 71%; agitation at 120 rev/min increased the degradation to 92% after 30?days of incubation. Enzymes such as manganese peroxidase (MnP), lignin peroxidase (LiP), laccase, 1,2-dioxygenase and 2,3-dioxgenase were produced by Polyporus sp. S133 during incubation, and the highest enzyme activity was 182.3 U l?1 by 1,2-dioxygenase after 20?days of incubation. These results indicate that ligninolytic and dioxygenase enzymes secreted from Polyporus sp. S133 could play an important role in anthracene degradation efficiency. The metabolites detected through the degradation pathway were anthraquinone, phthalic acid, benzoic acid and catechol. 相似文献
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Tony Hadibarata Faizuan Abdullah Abdull Rahim Mohd Yusoff Razali Ismail Shamila Azman Norliyana Adnan 《Water, air, and soil pollution》2012,223(6):3125-3136
In order to observe the variation in land use changes, satellite images from the Landsat Thematic Mapper (TM) and the Enhanced Thematic Mapper (ETM) for 1991, 2000, 2005, and 2008 were used to compare the differences between selected water quality parameters, including heavy metal (Cd, Pb, and Zn) content in both water and green mussels or Perna viridis (Linnaeus.) before and after the increase in land use activities beginning from 2006. The samples were collected at 11 points for water and 4 points for green mussels between the Second Link and the Causeway Link at the Johor Strait in 2009 and were analyzed for pH, temperature degrees Celsius), dissolved oxygen, ammoniacal nitrogen, and heavy metal (Cd, Pb, and Zn) content. 相似文献
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