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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

Inactive Publication Date: 2015-06-24
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the recovery and reuse of adsorbents and secondary pollution are also issues that should be considered in the treatment of heavy metal wastewater by adsorption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[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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Abstract

The invention discloses a corncob / titanium dioxide composite heavy metal adsorbent which is characterized by being prepared from the following raw materials in parts by weight: 30-40 parts of corncobs, 5-10 parts of attapulgite, 5-10 parts of barite powder, 3-5 parts of nano titanium dioxide, 5-10 parts of corn starch, 2-4 parts of ethylenediaminetetraacetic acid disodium salt, 1-2 parts of sodium polyacrylate, 1-2 parts of sodium lignosulfonate, 3-5 parts of xanthan gum and 1-2 parts of hydroxyethyl cellulose. According to the heavy metal adsorbent disclosed by the invention, the price is low, and the source raw materials is wide, the process is simple, the heavy metal absorbing capability is strong, secondary pollution does not exist, the recovery is easy and social and economic benefits are relatively high.

Description

technical field [0001] The invention relates to the field of environmental treatment, in particular to a corncob / titanium dioxide composite heavy metal adsorbent and a preparation method thereof. Background technique [0002] With the progress of industry and social development, heavy metal wastes discharged from industries such as metallurgy and tanning and daily life have increased, resulting in aggravated environmental heavy metal pollution. Because heavy metal ions cannot be degraded by microorganisms and are enriched in organisms, they have seriously threatened the ecological environment and human health. The treatment of heavy metal wastewater has also received more and more attention. [0003] Adsorption treatment of heavy metal pollution has the advantages of simple operation, high efficiency, and various types, especially for low-concentration heavy metal wastewater. It has unique application value and is the most widely used heavy metal wastewater treatment method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/50C02F101/20
Inventor 唐玉朝黄显怀
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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