The effects of salinity on the growth and biochemical properties of Chlamydomonas mexicana GU732420 cultivated in municipal wastewater.
A freshwater microalga Chlamydomonas mexicana was grown on municipal wastewater with different levels of salinity up to 400 mmol/L NaCl, and the biochemical properties were characterized after 10 days of cultivation. C. mexicana showed the higher specific growth rates for 100 and 200mmol/L NaCl. Nitrogen was completely removed within 10 days as a result of algal growth promoted by the addition of 200-400 mmol/L NaCl. Phosphorus removal increased from 77-84% as the concentration of NaCI increased from 100 to 400 mmol/L. The highest removal of total inorganic carbon (66%) was obtained with the addition of 200 mmol/L NaCl. The lipid content increased from 17% to 38% as the concentration of NaCl increased from 0 to 400mmol/L. The total fatty acid content and glycerol yield of C. mexicana increased 1.8- and 4-fold in wastewater amended with NaCl, respectively. Fatty acids accumulated in the algal biomass were mainly composed of palmitic (27-29%), y-linolenic (27-30%), and linolelaidic acids (16-18%). The optimal condition for fatty acids production in C. mexicana was observed when the municipal wastewater was amended with 100-200 mmol/L NaCl with a simultaneous removal of nutrients.
El-Sayed
el-S
Salama
Reda A I
RA
Abou-Shanaba
Jung Rae
JR
Kim
Sangho
S
Lee
Seong-Heon
SH
Kim
Sang-Eun
SE
Oh
Hyun-Chul
HC
Kim
Hyun-Seog
HS
Roh
Byong-Hun
BH
Jeon
D056804:Biofuels; D018533:Biomass; D002696:Chlamydomonas / Q000254:growth & development* / Q000378:metabolism; D005227:Fatty Acids / Q000378:metabolism; D005990:Glycerol / Q000378:metabolism; D050356:Lipid Metabolism; D054712:Salinity; D012965:Sodium Chloride; D062065:Wastewater / Q000382:microbiology*
D056804:Biofuels; D005227:Fatty Acids; D005990:Glycerol; D012965:Sodium Chloride; D062065:Wastewater