Cultivation of indigenous Chlorococcum sp. in aquaculture wastewater under various light color and biomass harvesting using membrane filtration: A simultaneous wastewater treatment and biomass production

Zubair Hashmi , Ibrahim Maina Idriss , Hussein Taha , Juliana Zaini , Muhammad Saifullah Abu Bakar , Rosnah Abdullah , Asep Bayu Dani Nandianto , Muhammad Roil Bilad
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Abstract

This study investigates the potential of the microalga Chlorococcum sp. for treating real aquaculture wastewater under varying LED light spectra (red, blue, white, violet) and harvesting biomass using polyvinylidene fluoride (PVDF) membranes. Among the tested conditions, red light yielded superior results, achieving 100 % nitrogen removal, 98.77 % phosphorus removal, and 77.21 % COD reduction by the 15th day, alongside the highest biomass production (2.00 ± 0.14 g/L) with the lowest energy consumption (1.08 kWh). Blue light is the next most effective spectra for nutrient removal, while white and violet lights demonstrated moderate performance, consuming 1.80 kWh and 1.62 kWh, respectively. The PVDF membrane exhibited high harvesting efficiency, with flux declining to 125.6 Lm⁻²h⁻¹ at the fourth cycle due to fouling and a flux recovery ratio (FRR) of 1.463 ± 0.078. The operational cost of the peristaltic pump used for harvesting was low, at approximately $0.0965. These findings highlight the efficacy of optimizing light spectra for simultaneous aquaculture wastewater remediation and biomass production, coupled with membrane filtration technology for efficient biomass recovery. This study provides a framework for integrating microalgal cultivation into sustainable wastewater management systems.
在不同浅色水产养殖废水中培养本土绿球藻和利用膜过滤收获生物质:废水处理和生物质生产的同时进行
本研究探讨了在不同LED光谱(红、蓝、白、紫)下处理真实水产养殖废水的微藻chlorcoccum sp.的潜力,并利用聚偏氟乙烯(PVDF)膜收集生物质。在试验条件中,红光效果较好,第15天氮去除率为100% %,磷去除率为98.77 %,COD去除率为77.21 %,生物质产量最高(2.00 ± 0.14 g/L),能耗最低(1.08 kWh)。蓝光是去除营养物质的第二有效光谱,而白光和紫光表现出中等的性能,分别消耗1.80千瓦时和1.62千瓦时。PVDF膜具有很高的收集效率,在第四个循环中由于污染,通量下降到125.6 Lm⁻²h⁻¹ ,通量回收率(FRR)为1.463 ± 0.078。用于采收的蠕动泵的运行成本很低,约为0.0965美元。这些发现强调了优化光谱在水产养殖废水修复和生物质生产同时进行的有效性,并结合膜过滤技术进行高效生物质回收。该研究为将微藻培养纳入可持续废水管理系统提供了一个框架。
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CiteScore
2.60
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