%0 Journal Article
%A Ge, Shijian
%A Champagne, Pascale
%D 2017
%T Cultivation
of the Marine Macroalgae Chaetomorpha
linum in Municipal Wastewater for Nutrient Recovery and Biomass
Production
%U https://acs.figshare.com/articles/journal_contribution/Cultivation_of_the_Marine_Macroalgae_i_Chaetomorpha_linum_i_in_Municipal_Wastewater_for_Nutrient_Recovery_and_Biomass_Production/4728544
%R 10.1021/acs.est.6b06039.s001
%2 https://acs.figshare.com/ndownloader/files/7719421
%K Marine Macroalgae Chaetomorpha linum
%K macroalgae Chaetomorpha linum
%K CO 2 supplementation
%K phosphorus removal efficiencies
%K PW
%K experiment
%K 10- CW cultures
%K type
%K biofuel
%K SW
%K AFDW
%K increase biomass productivity
%K wastewater treatment alternative
%K biomass composition
%X Compared
to microalgae, macroalgae are larger in size, thereby
imposing lower separation and drying costs. This study demonstrates
the feasibility of cultivating macroalgae Chaetomorpha linum in different types of municipal wastewaters, their ability to remove
nutrient and their biomass composition for downstream biofuel production.
Screening experiments indicated that C. linum grew
well on primary (PW) and secondary wastewaters (SW), as well as centrate
wastewater (CW) diluted to less than 20%. In a subsequent experiment,
a step feeding approach was found to significantly increase biomass
productivity to 10.7 ± 0.2 g AFDW·m–2·d–1 (p < 0.001), a 26.5% improvement
in comparison to the control with single feeding, when grown on 10-CW;
meanwhile, nitrogen and phosphorus removal efficiencies rose to 86.8
± 1.1% (p < 0.001) and 92.6 ± 0.2% (p < 0.001), respectively. The CO2-supplemented
SW cultures (10.1 ± 0.4 g AFDW·m–2·d–1) were 1.20 times more productive than the corresponding
controls without CO2 supplementation (p < 0.001); however, similar improvements were not observed in
PW (p = 0.07) and 10-CW cultures (p = 0.07). Moreover, wastewater type and nutrient concentration influenced
biomass composition (protein, carbohydrate and lipid). These findings
indicate that the application of the macroalgae C. linum could represent an effective wastewater treatment alternative that
could also provide a feedstock for downstream processing to biofuels.
%I ACS Publications