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首页> 外文期刊>Clean technologies and environmental policy >Waste to energy: the effects of Pseudomonas sp. on Chlorella sorokiniana biomass and lipid productions in palm oil mill effluent
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Waste to energy: the effects of Pseudomonas sp. on Chlorella sorokiniana biomass and lipid productions in palm oil mill effluent

机译：浪费能源：假单胞菌的影响。棕榈油厂废水中小球藻的生物量和脂质生产

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摘要

Microalgae are recognised as promising feedstock for biofuel production. The feasibility in commercial scale microalgae cultivation could be enhanced by incorporating palm oil mill effluent (POME) as culture medium, for greater biomass growth and lipid production, together with POME bioremediation. The polluting POME is generated massively in Malaysia. POME contains high concentrations of carbon and nutrients, thus it is suitable to be applied for microalgae cultivation. The approach on waste to energy should be advanced. We studied the effects of applying Pseudomonas sp. on Chlorella sorokiniana CY-1 cultivation in POME. Pseudomonas sp. was found effective in POME decolourisation prior to C. sorokiniana CY-1 cultivation. Yet, microalgae biomass and lipid productions were higher in the non-decolourised POME. Pseudomonas sp. was as well-being co-cultivated with C. sorokiniana CY-1 in ratios of microalgae versus bacteria of 1:1; 2:1 and 1:2. Biomass of 2.04 g L_(−1)and biomass productivity of 185.71 mg L_(−1) d_(−1)were attained in ratio of 1:1. Interestingly, the lipid content exhibited was excellent (16.04%), and about twofold higher than other ratios and the control (without bacteria). Fatty acids compositions were dominated by C16:0 (32.49%), C18:1 (24.06%) and C18:2 (20.28%), which were desirable fatty acids for biodiesel production. Effective POME bioremediation achieved with chemical oxygen demand, total nitrogen and total phosphorus removal of 53.7, 55.6 and 77.3%, respectively. Co-cultivation of microalgae and bacteria can be applied in the POME treatment plant. This allows satisfactory biomass and excellent lipid yields for biofuel production, as well as effective wastewater bioremediation.
机译：微藻被认为是用于生物燃料生产的有前途的原料。通过将棕榈油厂废液（POME）合并为培养基，以实现更大的生物量增长和脂质生产以及POME生物修复，可以增强商业规模微藻培养的可行性。污染严重的POME在马来西亚大量产生。 POME含有高浓度的碳和营养物质，因此适合用于微藻培养。应推进从废物到能源的方法。我们研究了应用假单胞菌sp。葡萄中小球藻小球藻CY-1的培养假单胞菌已发现在C. sorokiniana CY-1培养之前对POME脱色有效。然而，在未脱色的POME中微藻的生物量和脂质产量较高。假单胞菌与C. sorokiniana CY-1共培养的微藻与细菌的比例为1：1； 2：1和1：2。以1：1的比例获得2.04 g L _（-1）的生物量和185.71 mg L _（-1）d _（-1）的生物量。有趣的是，所显示的脂质含量极佳（16.04％），比其他比例和对照（无细菌）高约两倍。脂肪酸组成以C16：0（32.49％），C18：1（24.06％）和C18：2（20.28％）为主导，它们是生产生物柴油所需的脂肪酸。通过化学需氧量，总氮去除量和总磷去除率分别达到53.7％，55.6％和77.3％，可以实现有效的POME生物修复。微藻类和细菌的共培养可应用于POME处理厂。这使生物燃料生产具有令人满意的生物质和优异的脂质产量，并实现了有效的废水生物修复。

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