Singh Anjali, Čížková Mária, Náhlík Vít, Mezricky Dana, Schild Dominik, Rucki Marian, Vítová Milada
Laboratory of Cell Cycles of Algae, Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, Třeboň, Czechia.
Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, University of South Bohemia, České Budějovice, Czechia.
Front Microbiol. 2023 Feb 13;14:1130848. doi: 10.3389/fmicb.2023.1130848. eCollection 2023.
In recent decades, a shift has been seen in the use of light-emitting diodes over incandescent lights and compact fluorescent lamps (CFL), which eventually led to an increase in wastes of electrical equipment (WEE), especially fluorescent lamps (FLs) and CFL light bulbs. These widely used CFL lights, and their wastes are good sources of rare earth elements (REEs), which are desirable in almost every modern technology. Increased demand for REEs and their irregular supply have exerted pressure on us to seek alternative sources that may fulfill this demand in an eco-friendly manner. Bio-removal of wastes containing REEs, and their recycling may be a solution to this problem and could balance environmental and economic benefits. To address this problem, the current study focuses on the use of the extremophilic red alga, , for bioaccumulation/removal of REEs from hazardous industrial wastes of CFL bulbs and the physiological response of a synchronized culture of . A CFL acid extract significantly affected growth, photosynthetic pigments, quantum yield, and cell cycle progression of this alga. A synchronous culture was able to efficiently accumulate REEs from a CFL acid extract and efficiency was increased by including two phytohormones, i.e., 6-Benzylaminopurine (BAP - Cytokinin family) and 1-Naphthaleneacetic acid (NAA - Auxin family).
近几十年来，发光二极管的使用相对于白炽灯和紧凑型荧光灯（CFL）发生了转变，这最终导致电气设备废弃物（WEE）增加，尤其是荧光灯（FLs）和CFL灯泡。这些广泛使用的CFL灯及其废弃物是稀土元素（REEs）的良好来源，而稀土元素在几乎每一项现代技术中都不可或缺。对REEs的需求增加及其供应的不稳定性给我们带来了压力，促使我们寻找能够以环保方式满足这一需求的替代来源。对含REEs废弃物的生物去除及其回收利用可能是解决这一问题的办法，并且能够平衡环境和经济效益。为了解决这个问题，当前的研究聚焦于利用极端嗜热红藻， ，从CFL灯泡的危险工业废弃物中生物累积/去除REEs，以及该藻类同步培养物的生理反应。CFL酸提取物显著影响了这种藻类的生长、光合色素、量子产率和细胞周期进程。同步培养物能够有效地从CFL酸提取物中累积REEs，并且通过添加两种植物激素，即6-苄基腺嘌呤（BAP - 细胞分裂素家族）和1-萘乙酸（NAA - 生长素家族），累积效率得到了提高。
