Method for electrochemically cleaning alkaline gracilaria
An electrochemical and Gracilaria technology, applied in the field of agar green production, can solve problems such as large water consumption
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Embodiment 1
[0022] The plate area is 3990mm 2 , the distance between the plates is set to 12cm, and the voltage is set to 5V:
[0023] (1) Alkali treatment: the pretreated dried Gracilaria was mixed at a ratio of 1:15 (g / cm 3 ) to a solid-to-liquid ratio by adding 7% NaOH, placing it in a water bath at 85° C. for 3 hours, and filtering the lye to obtain alkaline Gracilaria.
[0024] (2) Electrolysis: press 10:1 (g / cm2) in the electrolyzer 3 ) solid-to-liquid ratio, add water and filter the obtained alkaline Gracilaria, set the voltage of 5v, place the anode and cathode at 3990mm 2 The ruthenium-iridium-titanium plate is set at a distance of 12 cm, and the electrolysis is performed by connecting a DC power supply with a wire, and the electrolyte is taken at 0 min, 20 min, 40 min, 60 min, 80 min, 100 min and 120 min electrolysis time.
[0025] In this embodiment, the pH of the electrolyte was the lowest at 0 min, which was 12.84, and the highest at 120 min, which was 13.03; the conductiv...
Embodiment 2
[0027] The plate area is 8190mm 2 , the distance between the plates is set to 12cm, and the voltage is set to 5V:
[0028] (1) Alkali treatment: the pretreated dried Gracilaria was mixed at a ratio of 1:15 (g / cm 3 ) to a solid-to-liquid ratio by adding 7% NaOH, placing it in a water bath at 85° C. for 3 hours, and filtering the lye to obtain alkaline Gracilaria.
[0029] (2) Electrolysis: press 10:1 (g / cm2) in the electrolyzer 3 ) to the solid-to-liquid ratio, add water and filter the alkaline Gracilaria, set the 5v voltage, place the anode and cathode at 8190mm 2 The ruthenium-iridium-titanium plate is set at a distance of 12 cm, and the electrolysis is performed by connecting a DC power supply with a wire, and the electrolyte is taken at 0 min, 20 min, 40 min, 60 min, 80 min, 100 min and 120 min electrolysis time.
[0030] In this embodiment, the pH of the electrolyte is the lowest at 0 min, which is 12.92, and the highest at 120 min, which is 13.02; the conductivity is t...
Embodiment 3
[0032] The plate area is 3990mm 2 , the distance between the plates is set to 18cm, and the voltage is set to 5V:
[0033] (1) Alkali treatment: the pretreated dried Gracilaria was mixed at a ratio of 1:15 (g / cm 3 ) to a solid-to-liquid ratio by adding 7% NaOH, placing it in a water bath at 85° C. for 3 hours, and filtering the lye to obtain alkaline Gracilaria.
[0034] (2) Electrolysis: press 10:1 (g / cm2) in the electrolyzer 3 ) solid-to-liquid ratio, add water and filter the obtained alkaline Gracilaria, set the voltage of 5v, place the anode and cathode at 3990mm 2 The ruthenium-iridium-titanium plate is set at a distance of 18cm, and the electrolysis is performed by connecting a DC power supply with a wire, and the electrolyte is taken under the electrolysis time of 0min, 20min, 40min, 60min, 80min, 100min and 120min respectively.
[0035] In this example, the pH of the electrolyte was the lowest at 0min, which was 12.96, and the highest at 80min, 100min and 120min, wh...
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