The method for extracting betaine from beet molasses includes the adhering to actions:
( 1) Procedure beetroot molasses: betaine web content is 7% and overall sugar content is 46%. Placement it in a water bathroom, include distilled water to deteriorate it at a proportion of 1:1.8, and stir at 55 ° C.( 2) Pass the thinned down feed fluid with a ceramic membrane layer with a pore size of 80nm. Throughout the microfiltration process, control the temperature degree to 65 ° C, the feed pressure to 0.2-0.25 MPa, the discharge stress to 0.15-0.20 MPa, and the membrane layer change to 60LMH. The amount of water consisted of is 32% (v/v) of the overall amount of the feed, and the penetrate is gathered after purification. Betaine return is 99%;.
( 3) Utilize a nanofiltration membrane (rolled membrane layer) with a molecular weight of 250D for treatment. The inlet pressure of the nanofiltration membrane layer is 2 to 2.5 Mpa, the electric outlet stress is 1.5 to 2.0 Mpa, the modification is 18LMH, and the amount of dialysis water included is 42% of the overall volume of the microfiltrate feed. % (v/v), the nanofiltration fluid was built up, and the betaine return reached 97.5%.
( 4) Pass the penetrate right into the 7th chromatographic column of the chromatography system, elution water gets in from the 1st chromatographic column, product fluid eruptions from the third chromatographic column, wastewater drains from the 9th chromatographic column, filter During the process, the temperature degree of each chromatographic column was managed to 75 ° C, and the betaine internet content of the item fluid was 96%, and the chromatographic betaine return was 93%;.
( 5) Concentrate the item fluid to a solid internet material of 72%, after that reduced the temperature level to 18 ° C for development. After the formation is finished, centrifuge for solid-liquid dividing.
( 6) Dry the crystals at 60 ° C to get a completed product of betaine. The pureness of the ended up product is 98.6%, and the total betaine yield is 80.8%.