Effect of microwave on biomass growth and oxygen production of microalgae Chlorella pyrenoidosa cultured in real wastewater

被引：0
|
作者：
He, Zhongqi [1 ,2 ]
Qu, Yuntian [1 ,2 ]
Jin, Wenbiao [1 ,2 ]
Zhou, Xu [1 ,2 ]
Han, Wei [1 ,2 ]
Song, Kang [3 ]
Gao, Shuhong [1 ,2 ]
Chen, Yidi [1 ,2 ]
Yin, Shiyu [1 ,2 ]
Jiang, Guangming [4 ]
机构：
[1] Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, State Key Lab Urban Water Resource & Environm, Shenzhen 518055, Peoples R China
[2] Harbin Inst Technol Shenzhen, Shenzhen Engn Lab Microalgae Bioenergy, Shenzhen 518055, Peoples R China
[3] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
[4] Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW 2522, Australia
来源：
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2022年 / 161卷
关键词：
Microwave; Chlorella pyrenoidosa; Real wastewater; Photosynthetic oxygen production rate; Algal-bacterial symbiotic; DISSOLVED-OXYGEN; BIOFUEL; EUTROPHICATION; ENHANCEMENT; RECOVERY; ENERGY;
D O I：
10.1016/j.psep.2022.03.015
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The oxygen production efficiency of microalgae is a critical factor for the performance of algal-bacterial symbiotic systems during real wastewater treatment. This study proposed a new method to enhance the growth and oxygen production rate of microalgae via microwave irradiation. The oxygen production per-formance of Chlorella pyrenoidosa grown in real wastewater was evaluated in the presence of microwaves, and the photosynthetic oxygen production rate was calculated based on the produced chlorophyll-a and dissolved oxygen. The results showed that microwave treatment promoted both algal growth and oxygen production. Chlorella pyrenoidosa was irradiated by microwave during the logarithmic phase. When the radiation power was 400 W and the treatment time was 25 s, the oxygen production of Chlorella pyrenoidosa and chlorophyll-a increased by 10.7% and 12.4%, while the photosynthetic oxygen production rate increased by 5.8%. Therefore, microwave can save the aeration energy required for degrading organic matter in real wastewater by algal-bacterial systems.(c) 2022 Published by Elsevier Ltd on behalf of Institution of Chemical Engineers.
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页码：22 / 33
页数：12
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