Corncob/titanium dioxide composite heavy metal adsorbent and preparation method thereof
A nano-titanium dioxide and titanium dioxide technology is applied in the field of environmental treatment to achieve the effects of no secondary pollution, low price and large adsorption capacity
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[0017] Non-limiting examples of the present invention are as follows:
[0018] A kind of corn cob / titanium dioxide composite heavy metal adsorbent is prepared from the following component raw materials by weight (kg):
[0019] Corn cob 35, attapulgite 8, barite powder 8, nano-titanium dioxide 4, corn starch 8, disodium edetate 3, sodium polyacrylate 1.5, sodium lignosulfonate 1.5, xanthan gum 4, hydroxyethyl Base cellulose 1.5.
[0020] The preparation method of corncob / titanium dioxide composite heavy metal adsorbent comprises the following steps:
[0021] (1) Weigh raw materials by weight, firstly mix corn cob with attapulgite and barite powder, then treat at 300°C for 1 hour, then add disodium edetate and sodium polyacrylate to grind to 400 mesh;
[0022] (2) Mix the material obtained in step (1) with corn starch, hydroxyethyl cellulose, xanthan gum and nano-titanium dioxide evenly, add water at a solid-to-liquid weight ratio of 1:0.5, ultrasonically disperse for 5 minute...
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