Comparison of Chlorella vulgaris and cyanobacterial biomass: cultivation in urban wastewater and methane production

Bioprocess and Biosystems Engineering
Lara MendezCristina González-Fernández

Abstract

Anaerobic digestion of microalgae is hampered by its complex cell wall. Against this background, cyanobacteria cell walls render this biomass as an ideal substrate for overcoming this drawback. The aim of the present study was to compare the growth of two cyanobacteria (Aphanizomenon ovalisporum and Anabaena planctonica) and a microalga (Chlorella vulgaris) in urban wastewater when varying the temperature (22, 27 and 32 °C). Cyanobacterial optimal growth for both strains was attained at 22 °C, while C. vulgaris did not show remarkable differences among temperatures. For all the microorganisms, ammonium removal was higher than phosphate. Biomass collected was subjected to anaerobic digestion. Methane yield of C. vulgaris was 184.8 mL CH4 g COD in(-1) while with A. ovalisporum and A. planctonica the methane production was 1.2- and 1.4-fold higher. This study showed that cyanobacteria growth rates could be comparable to microalgae while presenting the additional benefit of an increased anaerobic digestibility.

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Nov 26, 2009·Applied Biochemistry and Biotechnology·Liang WangRoger Ruan
May 25, 2010·Bioresource Technology·Cynthia Victoria González LópezJosé María Fernández Sevilla
Jul 24, 2012·Biotechnology Advances·Cristina González-Fernández, Mercedes Ballesteros
Oct 8, 2013·Bioresource Technology·Lara MendezCristina González-Fernández
Aug 13, 2014·Water Research·Giorgos MarkouKoenraad Muylaert
Nov 5, 2014·Bioprocess and Biosystems Engineering·Hee Jeong Choi, Seung Mok Lee
Apr 12, 2015·Water Research·Annelies BeuckelsKoenraad Muylaert

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Citations

Aug 3, 2017·Critical Reviews in Biotechnology·Yimin ChenSeetharaman Vaidyanathan
Jun 25, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Alejandra Sánchez-BayoLuis Fernando Bautista
Apr 9, 2021·Environmental Technology·Andrés Felipe Torres-FrancoCleber Cunha Figueredo
Jun 1, 2021·Journal of Environmental Management·C M CatoneS Ulgiati

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