Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of light sources

被引：73

作者：

Zhou, Qin ^{[1
]}

Zhang, Panyue ^{[2
]}

Zhang, Guangming ^{[1
]}

机构：

[1] Renmin Univ China, Sch Environm & Nat Resource, Beijing 100872, Peoples R China

[2] Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 179卷

基金：

中国国家自然科学基金;

关键词：

Photosynthetic bacteria; Light source; LED; Photosynthetic pigments; Yield; CAROTENOIDS PRODUCTION; PHOTO-BIOREACTOR; BACTERIOCHLOROPHYLL; CULTIVATION; METABOLISM;

D O I：

10.1016/j.biortech.2014.12.077

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study is aimed at enhancing biomass and pigments production together with pollution removal in photosynthetic bacteria (PSB) wastewater treatment via different light sources. Red, yellow, blue, white LED and incandescent lamp were used. Results showed different light sources had great effects on the PSB. PSB had the highest biomass production, COD removal and biomass yield with red LED. The corresponding biomass, COD removal and biomass yield reached 2580 mg/L, 88.6% and 0.49 mg-biomass/mg-COD-removal, respectively. The hydraulic retention time of wastewater treatment could be shortened to 72 h with red LED. Mechanism analysis showed higher ATP was produced with red LED than others. Light sources could significantly affect the pigments production. The pigments productions were greatly higher with LED than incandescent lamp. Yellow LED had the highest pigments production while red LED produced the highest carotenoid/bacteriochlorophyll ratio. Considering both efficiency and energy cost, red LED was the optimal light source. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：505 / 509

页数：5

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