农业级营养调控对等藻类微藻生物量生产和碳固定率的影响

Q3 Social Sciences
Nurfilza Zaheera Muhammad Nor Rashid, K. A. Radzun, Aimi Nadia Saharuddin, Muhamad Helmi Husaini Rusmidi, Asmida Ismail, Wan Razarinah Wan Abdul Razak, F. Pardi, Khudzir Ismail, Ali H. Jawad, L. Yahya
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引用次数: 0

摘要

本研究探讨了改变农业级(AG)培养基中的养分会发生什么情况,以及这会如何改变等藻类的生物量生产和二氧化碳固定能力。 本研究旨在解决由于微藻类问题而在建立生物燃料储备方面遇到的挑战。首先利用培养基优化系统(AMOS),采用因子和箱式贝肯实验设计法确定 AG 培养基中氮、磷和微量营养元素的最佳含量,并将氮、钾、钙、镁、铁和锌分别改进为 15 毫摩尔、10 毫摩尔、0.5 毫摩尔、0.8 毫摩尔、0.3 毫摩尔和 0.15 毫摩尔。随后,在 1 升培养液中对改良培养基进行了测试,结果显示,与传统的 F/2 培养基(1.63 gL-1)相比,在改良 AG 培养基中培养提取的生物量为 2.37 gL-1。与 AG 培养基相比,中期研究中测试的含钙和铁更高的培养基的生物量产量分别提高了 9% 和 7%。新的优化培养基被称为 TNBR 优化培养基 (OM),已在燃煤发电厂的 250 升气举鼓泡柱型光生物反应器中进行了测试,该反应器提供模拟和实际烟气。经 TNBR 优化的培养基显示出更好的藻类生长效果,尤其是在实际烟气中,因为烟气中的二氧化碳浓度增加了。与之前报告中的 0.52 gCO2 L-1 天-1 相比,改进后的二氧化碳固定率分别为 0.72 gCO2.L-1 天-1。改良的培养基已经配制完成,可用于培养矶藻,目前的工作可进一步用于更大规模的培养。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of agricultural grade nutrient modulation on the biomass production and carbon fixation rate of Isochrysis sp. microalgae
This study looked at what happens when the nutrients in agricultural grade (AG) medium are changed and how that changes the biomass production and CO2 fixation ability of Isochrysis sp. It aims to address the challenges in establishing biofuel stocks due to the microalgae issue. A medium optimization system (AMOS) was first used to determine the optimum level of nitrogen, phosphorus, and micronutrients in AG medium using Factorial and Box Behnken Experimental Design, which resulted in improvements to N, K, Ca, Mg, Fe, and Z with 15 mM, 10 mM, 0.5 mM, 0.8 mM, 0.3 mM, and 0.15 mM, respectively. Subsequently, the improved medium was tested in a 1L culture volume, resulting in a 2.37 gL-1 biomass extracted from cultivation in the improved AG medium compared to cultivation in the traditional F/2 medium (1.63 gL-1). Cultures with higher Ca and Fe tested in an interim study yielded 9% and 7% enhanced biomass production compared to AG medium. The new optimized medium, which is known as TNBR-optimized medium (OM), was tested at the live coal-fired power plant in a 250 L air-lift bubbling column-type photobioreactor supplied with simulated and actual flue gas. The TNBR-optimized medium has demonstrated better algae growth, especially on actual flue gas, which has increased the concentration of CO2. The improved CO2 fixation rate was 0.72 gCO2.L-1 day-1, respectively, against those obtained from the previous report – 0.52 gCO2 L-1 day-1. An improved medium has been formulated to cultivate Isochrysis sp., and the current work can be further utilized for larger-scale cultivations.
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来源期刊
Asian Journal of Agriculture and Rural Development
Asian Journal of Agriculture and Rural Development Social Sciences-Geography, Planning and Development
CiteScore
1.30
自引率
0.00%
发文量
28
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