A synergic approach for nutrient recovery and biodiesel production by the cultivation of microalga species in the fertilizer plant wastewater

被引：14

作者：

Ambat, Indu ^{[1
]}

Bec, Sabina ^{[1
]}

Peltomaa, Elina ^{[2
,3
,4
]}

Srivastava, Varsha ^{[1
]}

Ojala, Anne ^{[2
,3
,4
]}

Sillanpaa, Mika ^{[1
]}

机构：

[1] Lappeenranta Univ Technol, Sch Engn Sci, Dept Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland

[2] Univ Helsinki, Fac Biol & Environm Sci, Ecosyst & Environm Res Programme, Niemenkatu 73, FI-15140 Lahti, Finland

[3] Univ Helsinki, Inst Atmospher & Earth Syst Res INAR Forest Sci, POB 27, FI-00014 Helsinki, Finland

[4] Helsinki Inst Sustainabil Sci HELSUS, Yliopistonkatu 3, Helsinki 00014, Yliopisto, Finland

来源：

SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期

关键词：

ALGAL BIOMASS; CHLORELLA-PYRENOIDOSA; GROWTH; CHLAMYDOMONAS; REMOVAL; TRANSESTERIFICATION; PHOTOBIOREACTOR; AQUACULTURE; FEEDSTOCKS; EXTRACTION;

D O I：

10.1038/s41598-019-55748-w

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The combination of wastewater treatment and biodiesel production using algal cultivation was studied in the present work. The two main goals of the work were achieved by the cultivation of freshwater microalgae such as Chlamydomonas sp., Scenedesmus ecornis, and Scenedesmus communis in two different dilutions of fertilizer plant wastewater (FWWD1 and FWWD2) collected from Yara Suomi 0y, Finland. The growth pattern of different algal species in FWWD1 and FWWD2 was observed. The effect of pH on biomass concentration, lipid content, biomass productivity, and lipid productivity by all three algal species in FWWD1 and FWWD2 were monitored. The maximum biomass concentration and productivity were observed in FWWD1 at pH7.5 for Chlamydomonas sp. and at pH 8.5 for S. ecornis and S. communis. The maximum lipid content was detected in Chlamydomonas sp at pH5.5, followed by S. ecornis and then S. communis at pH 7.5 in FWWD2 obtained after co-solvent extraction method. The most significant removal percentage of COD by all algal species were observed in FWWD1, whereas the highest removal percentage of TN and TP were detected in FWWD2, respectively. The fatty acid methyl ester (FAME) characterization of each algal species in FWWD1 and FWWD2 at their optimum pH was investigated to determine the quality of obtained biodiesel.

引用

页数：9

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