@article{fdi:010079071,
  title = {{C}ontrol of the p{H} for marine microalgae polycultures : a key point for {CO}2 fixation improvement in intensive cultures},
  author = {{G}ales, {A}. and {T}riplet, {S}. and {G}eoffroy, {T}. and {R}oques, {C}. and {C}arr{\'e}, {C}laire and {L}e {F}loc'h, {E}. and {L}anfranchi, {M}. and {S}imier, {M}onique and d'{O}rbcastel, {E}. {R}. and {P}rzybyla, {C}. and {F}ouilland, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{R}ecently, {CO}2 recycling for the production of valuable microalgae has acquired substantial interest. {M}ost studies investigating {CO}2 conversion efficiency in algal cultures were based on single species, although a stabilising effect of algal diversity on biomass production was recently highlighted. {H}owever, addition of {CO}2 into polyalgal cultures requires a careful control of p{H}; performance of {CO}2 conversion, growth and carbon biomass production are affected by p{H} differently, depending on the species of microalgae. {T}his study investigates the efficiency of {CO}2 conversion by natural marine algal assemblage cultivated in open, land-based raceways (4.5 m(3), 10 m(2)), working as high rate algal ponds ({HRAP}). {P}onds were enriched with nitrogen and phosphate, pure {CO}2 was added and algal cultures were grown under three different fixed p{H} levels: p{H} 6, 7 and 8. {T}he highest conversion of photosynthetically fixed {CO}2 into carbon biomass (40 %) was reached at p{H} 7, an intermediate level, due to the partial {CO}2 asphyxiation of algal predators (copepods, ciliates), while being under the suboptimal conditions for the development of marine amoebae. {U}nder this p{H}, the theoretical maximal biological conversion of available {CO}2 into carbon biomass was estimated to be 60 % in naturally inoculated open ponds.},
  keywords = {{C}arbon yield ; {M}icroalgal diversity ; p{H} ; {P}redators},
  booktitle = {},
  journal = {{J}ournal of {C}o2 {U}tilization},
  volume = {38},
  numero = {},
  pages = {187--193},
  ISSN = {2212-9820},
  year = {2020},
  DOI = {10.1016/j.jcou.2020.01.019},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079071},
}