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首页> 外文期刊>Biomass & bioenergy >Outdoor cultivation of the green microalga Chlorella minutissima in mini pond system under batch and fed-batch modes integrating low-dose sequential phosphate addition (LDSPA) strategy for biodiesel production
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Outdoor cultivation of the green microalga Chlorella minutissima in mini pond system under batch and fed-batch modes integrating low-dose sequential phosphate addition (LDSPA) strategy for biodiesel production

机译：分批和补料批量模型中迷你池塘系统绿色微藻菌Minutissima的户外培养和生物柴油生产低剂量顺序磷酸盐添加（LDSPA）策略

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摘要

Microalgae are appraised as the renewable feedstock for biodiesel production. With this view, the current study examines the possibility of a locally isolated microalga, Chlorella minutissima for production of biodiesel, under batch and fed-batch cultivation modes, being subjected to seasonal variations. Effects of different culture depths (5, 10, 15, and 20 cm) on the biomass yield and lipid accumulation were investigated using the mini pond system, and alterations in different physicochemical factors were documented. Both the batch as well as the fed-batch cultivations recorded the 15 cm culture depth to be optimum for obtaining the maximum biomass and lipid production. Consequently, this optimal depth was chosen for further experimentation integrating low-dose sequential phosphate addition (LDSPA) under both batch and fed-batch modes. For batch cultivation under LDSPA mode, the estimated annual biomass productivity was 10.04 ton hectare~(-1) year~(-1), with the lipid productivity of 1.37 ton hectare~(-1) year~(-1), considering 11 cycles of cultivation per year. On the other hand, the fed-batch cultivation under LDSPA mode projected the annual biomass productivity of 15.4 ton hectare~(-1) year~(-1) and lipid productivity of 2.29 ton hectare~(-1) year~(-1), even with 10 cycles of cultivation yearly, thus, certifying the supremacy of the fed-batch cultivation with LDSPA for obtaining a higher productivity of lipid. The biodiesel generated from the produced biomass demonstrated a greater prevalence of monounsaturated and saturated fatty acid methyl esters. Additionally, the fuel characteristics of the biodiesel samples were analyzed and recorded to be at par with the national (Indian) as well as international (European and American) biodiesel standards, hence, indicating its suitability as an alternative to petroleum-based fuel.
机译：微藻被评为为生物柴油生产可再生原料。有了这种看法，目前的研究检查了本地分离的微藻，在分批和喂养批量培养模式下进行生物柴油的局部分离的微藻，在季节性培养模式下进行季节性变化。使用迷你池系统研究了不同培养深度（5,10,15和20cm）对生物质产量和脂质积累的影响，并记录了不同物理化学因素的改变。批量以及喂养批量培养都记录了15cm培养深度，以最佳地获得最高生物质和脂质生产。因此，选择该最佳深度用于进一步实验，在两批和补料分批模式下进一步实验整合低剂量顺序磷酸盐添加（LDSPA）。对于LDSPA模式下的分批培养，估计的年生物量生产率为10.04吨公顷〜（-1）年〜（-1），脂质生产率为1.37吨公顷〜（-1）年〜（-1），考虑到11每年栽培周期。另一方面，LDSPA模式下的喂养批量培养将年度生物量生产率为15.4吨公顷〜（-1）年〜（-1）和脂质生产率为2.29吨公顷〜（-1）年〜（-1 ），即使每年有10个培养循环，因此，用LDSPA认证FED分批培养的至高无上，以获得更高的脂质生产率。由所生产的生物质产生的生物柴油表明了单不饱和和饱和脂肪酸甲酯的更大流行。此外，分析了生物柴油样本的燃料特性，并记录为与国家（印度）和国际（欧洲和美国）生物柴油标准相提并论，从而表明其适用性是替代石油燃料的替代品。

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