干旱区生态环境知识资源中心(Arid): Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum

Arid

DOI	10.1016/j.scitotenv.2020.139733
	Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum
	Zhu, Qiuheng; Wu, Li; Li, Xiaoguang; Li, Guowen; Li, Jiaxi; Li, Caole; Zhao, Chen; Wang, Fan; Du, Caili; Deng, Chenning; Li, Wei; Zhang, Lieyu
通讯作者	Zhang, LY
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	737
英文摘要	Cultures of Scytonema javanicum obtained from artificial medium are used to control desertification, and through the effective redistribution of nutrients, related environmental problems can be alleviated. Wastewater is considered to be a potential alternative medium for S. javanicum. However, the effect of temperature on the nutrient redistribution ability of S. javanicum cultured in wastewater has rarely been considered. Therefore, this study explores the effect of temperature on S. javanicum in wastewater. The results showed that a sufficient temperature increase (from 25 degrees C to 30 degrees C) increased the photosynthetic activity of photosynthetic system II (PSII), accelerated the accumulation rate of S. javanicum biomass, and improved the removal efficiency of nutrients in wastewater. However, an increasing temperature caused a decrease in the final accumulated biomass. When the temperature was above 35 degrees C, the ratio of the variable to maximal fluorescence (Fv/Fm) of S. javanicum decreased, thus, causing damage to PSII. The average Fv/Fm at 35 degrees C and 40 degrees C decreased by 10.49% and 72.37%, respectively, compared to that at 25 degrees C. By analysing the chlorophyll fluorescence induction kinetics (OJIP) curve after 30 days, the P phase at 30 degrees C increased by 15.47% relative to that at 25 degrees C, whereas that at 35 degrees C and 40 degrees C decreased by 45.54% and 86.37%, respectively. In particular, at 40 degrees C, the O-J-I-P phase transformed into the O-J (J = I = P) phase, which caused irreversible damage to the PSII of S. javanicum. Comprehensive scores were determined using the entropy weight method and revealed that 30 degrees C was the optimal temperature for the wastewater culture of S. javanicum. This temperature improved the biomass accumulation rate and wastewater transfer efficiency. These results provide a scientific basis for improving the efficiency of the coupling technology of wastewater treatment and desert algal cultivation. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Wastewater Biomass Desertification Photosynthetic activity Nutrients
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000553708300008
WOS关键词	BIOLOGICAL SOIL CRUSTS ; WASTE-WATER ; CULTIVATION ; NITROGEN ; ALGAE ; VARIABILITY ; PHOSPHORUS ; RECOVERY ; LIGHT ; CO2
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325280
作者单位	[Zhu, Qiuheng; Zhao, Chen; Wang, Fan; Du, Caili; Deng, Chenning; Zhang, Lieyu] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China; [Zhu, Qiuheng; Deng, Chenning; Zhang, Lieyu] Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China; [Wu, Li] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China; [Li, Xiaoguang; Li, Guowen; Li, Jiaxi; Li, Caole; Li, Wei] Chinese Res Inst Environm Sci, State Environm Protect Key Lab Simulat & Control, Beijing 100012, Peoples R China; [Du, Caili] Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Qiuheng,Wu, Li,Li, Xiaoguang,et al. Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum[J]. 北京师范大学,2020,737.
APA	Zhu, Qiuheng.,Wu, Li.,Li, Xiaoguang.,Li, Guowen.,Li, Jiaxi.,...&Zhang, Lieyu.(2020).Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum.SCIENCE OF THE TOTAL ENVIRONMENT,737.
MLA	Zhu, Qiuheng,et al."Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum".SCIENCE OF THE TOTAL ENVIRONMENT 737(2020).