Preparation method of biochar with good electrical property
A technology of electrical properties and bio-carbon, applied in the direction of carbon preparation/purification, etc., can solve problems such as instability and poor electrical properties, and achieve the effects of activating surface properties, enhancing exchange adsorption capacity, and enhancing electrical properties
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Embodiment 1
[0036] A method for preparing biochar with good electrical properties, comprising the steps of:
[0037] (1) Cooking treatment:
[0038] Putting the crop stalks into the sodium hydroxide solution and heating to boiling, then boiling for 20 minutes, taking out the crop stalks for later use;
[0039] (2) Oxidation soaking treatment:
[0040] The crop stalks treated in step (1) were soaked in a hydrogen peroxide solution with a volume fraction of 20% for 4 hours, washed with deionized water until neutral and then used for later use;
[0041] (3) Steam explosion treatment:
[0042] Put the crop straw treated in step (2) into a steam explosion tank for steam explosion treatment, take it out after completion, dry and pulverize it, and pass through 100 meshes to obtain crop straw powder for later use;
[0043] (4) Activation treatment:
[0044] Put the crop straw powder obtained in step (3) into the tartaric acid solution for soaking for 5 minutes, take it out, wash it with deion...
Embodiment 2
[0061] A method for preparing biochar with good electrical properties, comprising the steps of:
[0062] (1) Cooking treatment:
[0063] Putting the crop stalks into the sodium hydroxide solution and heating to boiling, then boiling for 25 minutes, taking out the crop stalks for later use;
[0064] (2) Oxidation soaking treatment:
[0065] The crop stalks treated in step (1) were soaked in a hydrogen peroxide solution with a volume fraction of 23% for 5 hours, washed with deionized water until neutral and then used for later use;
[0066] (3) Steam explosion treatment:
[0067] Put the crop straw treated in step (2) into a steam explosion tank for steam explosion treatment, take it out after completion, dry and pulverize it, and pass through 100 meshes to obtain crop straw powder for later use;
[0068] (4) Activation treatment:
[0069] Put the crop straw powder obtained in step (3) into the tartaric acid solution for soaking treatment for 6 minutes, take it out, wash it ...
Embodiment 3
[0086] A method for preparing biochar with good electrical properties, comprising the steps of:
[0087] (1) Cooking treatment:
[0088] Putting the crop stalks into the sodium hydroxide solution and heating to boiling, then boiling for 30 minutes, taking out the crop stalks for later use;
[0089] (2) Oxidation soaking treatment:
[0090] The crop stalks treated in step (1) were soaked in a hydrogen peroxide solution with a volume fraction of 25% for 6 hours, washed with deionized water until neutral and then used for later use;
[0091] (3) Steam explosion treatment:
[0092] Put the crop straw treated in step (2) into a steam explosion tank for steam explosion treatment, take it out after completion, dry and pulverize it, and pass through 100 meshes to obtain crop straw powder for later use;
[0093] (4) Activation treatment:
[0094] Put the crop straw powder obtained in step (3) into the tartaric acid solution for soaking for 7 minutes, take it out, wash it with deion...
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