Method for cultivating chroococcus by domestic-wastewater-diluted kitchen waste anaerobic digestion solution
A technology for domestic sewage and kitchen waste, applied in the direction of microorganism-based methods, biochemical equipment and methods, chemical instruments and methods, etc., can solve the problems of reducing the concentration of nitrogen and phosphorus, and the high cost of microalgae cultivation, so as to increase the growth rate, Effect of increasing oil content and biomass content and reducing cost
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Embodiment 1
[0020] Example 1 Growth characteristics of Chroococcus SDEC-6 in different culture media
[0021] The method of the present invention for diluting digestive liquid with domestic sewage and culturing Chroococcus SDEC-6 while obtaining biomass
[0022] Including the following steps:
[0023] (1) Put the Chroococcus SDEC-6 algae solution stored in the laboratory in BG11 medium for expansion. The composition of BG11 medium is as follows: NaNO 3 1.5g / L, K 2 HPO 4 0.04g / L,MgSO 4 .7H 2 O0.075g / L,CaCl 2 .2H 2 O0.036g / L, Citricacid 0.006g / L, Ferricammoniumcitrate 0.006g / L, EDTANa 2 0.001g / L,Na 2 CO 3 0.02g / L, A 5 1ml / L.
[0024] (2) The absorbance at 680nm of the obtained liquid seed liquid after ten times dilution is 0.203.
[0025] (3) Inoculate the seed liquid in the diluted sewage, conduct constant temperature cultivation in an artificial climate chamber, and sample the biomass every day during the cultivation process and conduct water quality analysis.
[0026] (4) After the algae body descr...
Embodiment 2
[0036] Example 2 Oil accumulation characteristics of Chroococcus SDEC-6
[0037] Oil content analysis:
[0038] Weigh about 0.1g of dry algae flour into a 50mL centrifuge tube, add 10mL methanol / chloroform (v / v=1:2) solution, treat with an ultrasonic breaker for 10min, centrifuge at 4000r / min for 10min, and separate the layers The organic phase in the two phases was transferred to a 60 mL separatory funnel, and the entire extraction process was repeated twice. According to the volume of the extract in the separatory funnel, add 0.9% sodium chloride solution (the added volume is 1 / 5 of the extract), shake well for about 1 min, and let stand for 15 min to measure the volume of the lower extract and take 5 mL in In a 10mL glass test tube, blow dry with nitrogen, and place the glass tube in an oven at 60°C to a constant weight (about 30min). The oil content is calculated as follows:
[0039] L W = ( m 2 - m 0 ) X V 5 X m 1
[0040] In the...
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