Method of purifying immersed liquid in extraction process of algin, iodine and mannitol
A technology of soaking liquid and alginate, applied in chemical instruments and methods, inorganic chemistry, organic chemistry and other directions, can solve the problems of energy consumption, waste of resources, affecting product yield and production cost, etc., to avoid refining consumption and reduce labor. Strength, clear and transparent water quality
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Embodiment 1
[0016] 1) Add tap water to kelp and soak for 4 hours, repeat 3 times, and combine each soaking solution, wherein: the amount of tap water added is twice the mass of kelp.
[0017] 2) Get 150mL of combined soaking solution, add 4mL of 1% chitosan hydrochloric acid solution therein, stir the soaking solution for 2 minutes, and flocculate for 15 minutes, wherein white large flocculent aggregates appear in the soaking solution immediately when stirring, and the aggregates It sinks to the bottom, and the supernatant is clear and transparent.
[0018] Wherein: the chitosan acid solution is prepared by hydrochloric acid with a concentration of 1%.
[0019] 3) Use the Buchner funnel to filter the soaking liquid, recover and extract the alginate from the flocs; wherein: put a non-woven fabric of a suitable size in the Buchner funnel, evenly spread the diatomaceous earth on the non-woven fabric, Spread a non-woven fabric of suitable size on top of the soil.
[0020] The concentration ...
Embodiment 2
[0022] 1) Add tap water to the kelp and soak for 6 hours, repeat 3 times, and combine each soaking solution, wherein: the amount of tap water added is 3 times the mass of kelp.
[0023] 2) Get 150mL of combined soaking solution, add 3mL 2% chitosan acetic acid solution therein, stir the soaking solution for 3 minutes, and flocculate for 4 hours, wherein white large flocculent aggregates appear in the soaking solution immediately when stirring, and the aggregates It sinks to the bottom, and the supernatant is clear and transparent.
[0024] Wherein: the chitosan acid solution is prepared with 1% acetic acid.
[0025] 3) The soaking liquid is centrifuged at a speed of 1000 rpm, and the flocs are recovered to extract alginate.
[0026] The concentration of mannitol in the filtered kelp soaking liquid was determined to be 2.5%, which increased the yield of mannitol by 35%.
Embodiment 3
[0028] 1) Add tap water to the kelp and soak for 7 hours, repeat twice, and combine the soaking solutions each time, wherein: the amount of tap water added is 4 times the mass of kelp.
[0029] 2) Take 150 mL of combined soaking solution, add 2 mL of 3% carboxymethyl chitosan acetic acid solution to it, stir the soaking solution for 4 minutes, and flocculate for 8 hours, wherein white large flocculent aggregates appear in the soaking solution immediately when stirring , the aggregates sink to the bottom, and the supernatant is clear and transparent.
[0030] Wherein: the carboxymethyl chitosan acid solution is prepared with 2% acetic acid.
[0031] 3) Use a Buchner funnel to filter the soaking liquid, recover the flocs and extract the alginate; wherein: put a non-woven fabric of a suitable size in the Buchner funnel, spread diatomaceous earth evenly on the non-woven fabric, Spread a non-woven fabric of suitable size on top of the soil.
[0032] The concentration of mannitol ...
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