Optimal growth conditions and heavy metal removal of Coelastrella sp. CORE-3 isolated from wastewater

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry Pub Date : 2024-07-17 DOI:10.1016/j.jiec.2024.07.034

J.S. Park , D.W. Kim , J.B. Kwon , S.H. Park , K.Y. Chung

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引用次数: 0

Abstract

This study was investigated to optimize growth conditions of native microalgae (Coelastrella sp. CORE-3) from wastewater, evaluate the removal of Cu²⁺, Zn²⁺, Cd²⁺ and Ni²⁺ and compare both isolated microalgae and Ankistrodesmus bibraianus, and describe their sorption mechanisms on the cell surface. The effects of the pH, light: dark cycle and temperature on the growth of the isolated Coelastrella sp. CORE-3 was optimized. The optimal L:D cycle, temperature, and pH conditions were 14:10 hr, 25℃, pH 7. The growth of isolated microalgae, Coelastrella sp. CORE-3. was compared with A. bibraianus. The removal efficiency of heavy metals by Coelastrella sp. CORE-3 and A. bibraianus were found as follows, respectively: (live cell) Zn²⁺ > Cd²⁺ > Cu²⁺ > Ni²⁺, (dead cell) Cu²⁺ > Cd²⁺ > Zn²⁺ > Ni²⁺. SEM analysis indicated that more cell surface deformation occurred in A. bibraianus compared to Coelastrella sp. after exposure to heavy metals. This result suggests that Coelastrella sp. CORE-3 has more resistant to heavy metal toxicity. In addition, based on the FT-IR analysis, the live cells of Coelastrella sp. CORE-3 and A. bibraianus showed the interactions of heavy metals with the functional groups: alcohol, alkane, amide, amine on their cell surfaces.

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利用从废水中分离出来的 CORE-3 螺旋藻优化生长条件并去除重金属

本研究旨在优化废水中本地微藻（Coelastrella sp. CORE-3）的生长条件，评估其对 Cu2+、Zn2+、Cd2+ 和 Ni2+ 的去除效果，并对分离微藻和 Ankistrodesmus bibraianus 进行比较，描述其在细胞表面的吸附机制。优化了 pH 值、光-暗周期和温度对离体鞘藻 CORE-3 生长的影响。最佳光暗周期、温度和 pH 条件为 14:10 hr、25℃、pH 7。CORE-3 和 A. bibraianus 对重金属的去除率分别为：（活细胞）Zn2+ > Cd2+ > Cu2+ > Ni2+，（死细胞）Cu2+ > Cd2+ > Zn2+ > Ni2+。扫描电镜分析表明，暴露于重金属后，A. bibraianus 的细胞表面变形比 Coelastrella sp.这一结果表明，Coelastrella sp. CORE-3 对重金属毒性的抵抗力更强。此外，根据傅立叶变换红外光谱分析，CORE-3 和 A. bibraianus 的活细胞显示出重金属与细胞表面的功能基团（醇、烷、酰胺、胺）的相互作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Industrial and Engineering Chemistry 工程技术-工程：化工

CiteScore

10.40

自引率

6.60%

发文量

639

审稿时长

29 days

期刊介绍： Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.