Phycoremediation coupled biomethane production employing sewage wastewater: Energy balance and feasibility analysis

被引：19

作者：

Brar, Amandeep ^{[1
]}

Kumar, Manish ^{[1
]}

Singh, Rajesh P. ^{[2
]}

Vivekanand, V. ^{[3
]}

Pareek, Nidhi ^{[1
]}

机构：

[1] Cent Univ Rajasthan Bandarsindri, Sch Life Sci, Dept Microbiol, Microbial Catalysis & Proc Engn Lab, Ajmer 305801, Rajasthan, India

[2] Indian Inst Technol Roorkee, Dept Biotechnol, Roorkee 247667, Uttarakhand, India

[3] Malaviya Natl Inst Technol, Ctr Energy & Environm, Jaipur 302017, Rajasthan, India

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 308卷

关键词：

Sewage wastewater; Microalgae; Phycoremediation; Biomethane; Energy balance; BIOMASS PRODUCTION; MICROALGAE CULTIVATION; ANAEROBIC BIODEGRADABILITY; SCENEDESMUS-OBLIQUUS; NUTRIENT REMOVAL; BIOFUEL; GROWTH; REMEDIATION; DIGESTION; CONSORTIA;

D O I：

10.1016/j.biortech.2020.123292

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In the present work Chlorella pyrenoidosa, Scenedesmus abundans and Anabaena ambigua have been evaluated for their biomass, phycoremediation efficiency and biomethane production potential by cultivating them in the primary treated sewage waste water (PTSWW) under controlled conditions. By the end of 25-day experiment, up to 52-88% reduction was observed in the nutrient concentration from the 3:1 ratio of PTSWW. Co-digestion of microalgal biomass (dry) with cow dung was performed to estimate biomethane potential. Biogas yield of 618-925 ml g(-1) VS with 48-65% of methane content was obtained employing the microalgal species cultivated in PTSWW. Microalgae appeared notably competent at nutrient sequestration from PTSWW with significant microalgal biomass productivity for biogas production. Energy balance studies revealed the feasibility of coupling the remediation with energy generation. High photosynthetic rate and biomass generation ability along with nutrient confiscation supports employment of microalgae as a potential next generation biofuel source with waste management.

引用

页数：9

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