Utilization of palm oil mill effluent for polyhydroxyalkanoate production and nutrient removal using statistical design

The optimization for poly-β-hydroxyalkanoate production was carried out with nutrient removal efficiency for total organic carbon (TOC), phosphate, and nitrate from palm oil mill effluent waste. The experiment was conducted in a fabricated fed-batch reactor and the data obtained was analyzed using c...

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Published inInternational journal of environmental science and technology (Tehran) Vol. 11; no. 3; pp. 671 - 684
Main Authors Md. Din, M. F., Ponraj, M., Van Loosdrecht, M., Ujang, Z., Chelliapan, S., Zambare, V.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2014
Springer Nature B.V
Subjects
Aquatic Pollution
Biopolymers
Earth and Environmental Science
Ecotoxicology
Effluents
Environment
Environmental Chemistry
Environmental Science and Engineering
Nutrient removal
Original Paper
Soil Science & Conservation
Vegetable oils
Waste Water Technology
Water Management
Water Pollution Control
Water treatment
Nitrate removal
Phosphate removal
Statistical design
Palm oil mill effluent
Biopolymer
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Summary:The optimization for poly-β-hydroxyalkanoate production was carried out with nutrient removal efficiency for total organic carbon (TOC), phosphate, and nitrate from palm oil mill effluent waste. The experiment was conducted in a fabricated fed-batch reactor and the data obtained was analyzed using central composite rotatable design and factorial design for response surface methodology as a systematic approach for designing the experiment statistically to obtain valid results with minimum effort, time, and resources. The analysis of numerical optimization with propagation of error showed that 66 % of poly-β-hydroxyalkanoate production can be obtained with nutrient removal of TOC and nitrate by 19 and 3 %, respectively. However, phosphate removal efficiency was not found to be much effective. More over, the chemical oxygen demand: nitrogen phosphate (509 g/g N), chemical oxygen demand: phosphate (200 g/g P), air flow rate (0.59 L/min), substrate feeding rate (20 mL/min), and cycle length (20 h) were the optimized variables for maximum poly-β-hydroxyalkanoate production and nutrient removal.
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ISSN:1735-1472
1735-2630
DOI:10.1007/s13762-013-0253-9