scholarly journals Comparative Assessment of Pharmaceutical Removal from Wastewater by the Microalgae Chlorella sorokiniana, Chlorella vulgaris and Scenedesmus obliquus

10.5772/66772 ◽  
2017 ◽  
Author(s):  
Carla Escapa Santos ◽  
Ricardo Nuno de Coimbra ◽  
Sergio Paniagua Bermejo ◽  
Ana Isabel García Pérez ◽  
Marta Otero Cabero
Keyword(s):  
Chlorella Vulgaris ◽  
Scenedesmus Obliquus ◽  
Chlorella Sorokiniana ◽  
Comparative Assessment ◽  
Pharmaceutical Removal

scholarly journals Acetaminophen Removal from Water by Microalgae and Effluent Toxicity Assessment by the Zebrafish Embryo Bioassay

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1929 ◽  
Author(s):  
Carla Escapa ◽  
Ricardo N. Coimbra ◽  
Teresa Neuparth ◽  
Tiago Torres ◽  
Miguel M. Santos ◽  
...  
Keyword(s):  
Water Treatment ◽  
Batch Culture ◽  
Chlorella Vulgaris ◽  
Zebrafish Embryo ◽  
Scenedesmus Obliquus ◽  
Toxicity Assessment ◽  
Chlorella Sorokiniana ◽  
The Other ◽  
Toxic Effects ◽  
Equivalent Concentration

In this work, zebrafish embryo bioassays were performed to assess the efficiency of microalgae in the removal of acetaminophen from water. Chlorella sorokiniana (CS), Chlorella vulgaris (CV) and Scenedesmus obliquus (SO) were the strains used for water treatment. Toxic effects on zebrafish embryo caused by effluents from microalgae treatment were compared with those observed under exposure to experimental solutions with known concentrations of acetaminophen. The three microalgae strains allowed for the reduction of acetaminophen concentration and its toxic effects, but CS was the most efficient one. At the end of the batch culture, a 67% removal was provided by CS with a reduction of 62% in the total abnormalities on the exposed zebrafish embryo. On the other hand, toxic effects observed under exposure to effluents treated by microalgae were alike to those determined for acetaminophen experimental solutions with equivalent concentration. Thus, it may be inferred that microalgae biodegradation of acetaminophen did not involve an increased toxicity for zebrafish embryo.

Influence of mixing and shear stress on Chlorella vulgaris, Scenedesmus obliquus, and Chlamydomonas reinhardtii

2012 ◽  
Vol 25 (2) ◽  
pp. 485-495 ◽  
Author(s):  
Marco Leupold ◽  
Stefan Hindersin ◽  
Giselher Gust ◽  
Martin Kerner ◽  
Dieter Hanelt
Keyword(s):  
Shear Stress ◽  
Chlamydomonas Reinhardtii ◽  
Chlorella Vulgaris ◽  
Scenedesmus Obliquus

scholarly journals Dual role of Chlorella sorokiniana and Scenedesmus obliquus for comprehensive wastewater treatment and biomass production for bio-fuels

2016 ◽  
Vol 115 ◽  
pp. 255-264 ◽  
Author(s):  
Sanjay Kumar Gupta ◽  
Faiz Ahmad Ansari ◽  
Amritanshu Shriwastav ◽  
Narendra Kumar Sahoo ◽  
Ismail Rawat ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Scenedesmus Obliquus ◽  
Chlorella Sorokiniana ◽  
Dual Role

scholarly journals Toxicity assessment of residual biomass of microalgae Chlorella sorokiniana

2019 ◽  
Vol 59 (7) ◽  
pp. 92-98
Author(s):  
Yulia A. Smyatskaya ◽  
Keyword(s):  
Heat Treatment ◽  
Toxic Effect ◽  
Daphnia Magna ◽  
Chlorella Vulgaris ◽  
Test Object ◽  
Experimental Studies ◽  
Chlorella Sorokiniana ◽  
Lipid Complex ◽  
Residual Biomass

In this paper, the determination of the toxicity of residual biomass of microalgae Chlorella sorokiniana by the method of biotesting with use of the test – object Daphnia magna Straus and algae Chlorella vulgaris Beijer. Determination of the toxic effect is necessary for planning the possibility of further use of waste, as a sorption material for wastewater treatment, as a co-substrate for fermentation of organic waste and in the production of biogas. The residual biomass of Chlorella sorokiniana microalgae is formed after the extraction of valuable components (lipid complex, pigments, proteins, etc.). The extraction of the lipid complex uses organic solvents (hexane, ethyl alcohol), the remains of which can remain in the residual biomass. Determined the acute toxicity of residual biomass of microalgae by water extraction with the help of test-object Daphnia magna Straus and the test object microalgae Chlorella vulgaris Beijer according to standard methods. According to the study waste source of residual biomass to treat the IV class of hazard, ЛКР50-48 = 11.7; БКР10-48 = 35.48. To reduce the toxic effect is proposed to conduct heat treatment. Heat treatment was carried out in a muffle furnace at a temperature of 105 oС for 1 hour. Experimental studies using Daphnia magna Straus crustaceans showed that the value of A is 3%, which indicates the absence of toxicity of residual biomass. When using microalgae toxicity criterion was also not exceeded in any dilution of water, including its original undiluted version. It is established that after heat treatment the residual biomass of microalgae becomes non-toxic and has a V hazard class. The results indicate the possibility of re-use of residual biomass.

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