The acclimation of Chlorella to high-level nitrite for potential application in biological NOx removal from industrial flue gases

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• 作者：Tianpei Li^a ; ^c ; ^{1105107837@qq.com" class="auth_mail" title="E-mail the corresponding author} ; Gang Xu^b ; ^{xug14@mails.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Junfeng Rong^d ; ^{rongjf.ripp@sinopec.com" class="auth_mail" title="E-mail the corresponding author} ; Hui Chen^a ; ^{chenhui@ihb.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Chenliu He^a ; ^{hechenliu@ihb.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Mario Giordano^e ; ^f ; ^g ; ^{m.giordano@me.com" class="auth_mail" title="E-mail the corresponding author} ; Qiang Wang^a ; ^{qwang@ihb.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：bio-DeNOx ; biological NOx removal ; FACHB ; freshwater algae culture collection of the institute of hydrobiology ; N ; nitrogen ; NOx ; nitrogen oxides ; NPQ ; non-photochemical quenching ; PSII ; photosystem II ; rRNA ; ribosomal RNA ; PCR ; polymerase chain reaction
• 刊名：Journal of Plant Physiology
• 出版年：2016
• 出版时间：20 May 2016
• 年：2016
• 卷：195
• 期：Complete
• 页码：73-79
• 全文大小：939 K

文摘

Nitrogen oxides (NOx) are the components of fossil flue gas that give rise to the greatest environmental concerns. This study evaluated the ability of the green algae Chlorella to acclimate to high level of NOx and the potential utilization of Chlorella strains in biological NOx removal (DeNOx) from industrial flue gases. Fifteen Chlorella strains were subject to high-level of nitrite (HN, 176.5 mmol L⁻¹ nitrite) to simulate exposure to high NOx. These strains were subsequently divided into four groups with respect to their ability to tolerate nitrite (excellent, good, fair, and poor). One strain from each group was selected to evaluate their photosynthetic response to HN condition, and the nitrite adaptability of the four Chlorella strains were further identified by using chlorophyll fluorescence. The outcome of our experiments shows that, although high concentrations of nitrite overall negatively affect growth and photosynthesis of Chlorella strains, the degree of nitrite tolerance is a strain-specific feature. Some Chlorella strains have an appreciably higher ability to acclimate to high-level of nitrite. Acclimation is achieved through a three-step process of restrict, acclimate, and thriving. Notably, Chlorella sp. C2 was found to have a high tolerance and to rapidly acclimate to high concentrations of nitrite; it is therefore a promising candidate for microalgae-based biological NOx removal.