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Modified nanometer titania/konjaku flour composite heavy metal adsorber and preparation method thereof

A nano-titanium dioxide, konjac flour technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of easy to agglomerate, difficult to settle, difficult to recover and reuse, etc. The effect of efficient adsorption and high adsorption performance

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

However, due to the strong hydrophilicity of titanium dioxide and the small size of nano-titanium dioxide particles, it is easy to agglomerate in water and is not easy to settle, so it is difficult to recycle and reuse, which limits its application.

Method used

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Examples

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Embodiment Construction

[0017] Non-limiting examples of the present invention are as follows:

[0018] A modified nano-titanium dioxide / konjac flour composite heavy metal adsorbent is prepared from the following components by weight (kg):

[0019] Konjac powder 25, glutinous rice flour 4, shrimp shell powder 4, modified nano titanium dioxide 3, pectin 4, sodium carboxymethyl cellulose 0.8, sodium alginate 4, sodium benzoate 0.15, disodium edetate 1.5, chlorine Calcium 3, boric acid 0.8, sodium methyl cocoyl taurate 0.04, water 90;

[0020] Wherein, the modified nano-titanium dioxide is made from the following raw materials in parts by weight:

[0021] Nano titanium dioxide 12, polyethylene glycol 3, mannitol 1.5, lauryl glucoside 0.15, polyvinylpyrrolidone 0.15, polysorbate-80 0.04, water 45;

[0022] The preparation method of modified nano titanium dioxide is:

[0023] Add polyethylene glycol and mannitol into water and stir until they are completely dissolved, then add lauryl glucoside, polyviny...

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PUM

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Abstract

The invention discloses a modified nanometer titania / konjaku flour composite heavy metal adsorber. The adsorber is characterized by comprising the following raw materials in parts by weight: 20-30 parts of konjaku powder, 3-5 parts of glutinous rice flour, 3-5 parts of shrimp shell powder, 2-4 parts of modified nanometer titania, 3-5 parts of pectin, 0.5-1 part of sodium carboxymethylcellulose, 3-5 parts of sodium alginate, 0.1-0.2 part of sodium benzoate, 1-2 parts of EDTA (Ethylene Diamine Tetraacetic Acid), 2-4 parts of calcium chloride, 0.5-1 part of boric acid, 0.02-0.05 part of sodium methyl cocoyl taurate and 80-100 parts of water. The heavy metal adsorber disclosed by the invention has high adsorption performance, and not only is heavy metal adsorbed high-efficiently, but also the recycling and reusing are convenient to realize; the resources of raw materials are abundant, the price is low, the preparation method is simple, and no secondary pollution is caused, so that high environmental and economic benefits are provided.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a modified nano-titanium dioxide / konjac flour composite heavy metal adsorbent and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the discharge of industrial sewage and unreasonable landfill treatment of solid waste make heavy metal pollutants enter the water body through various channels. Heavy metals entering water are highly stable and difficult to decompose, and are easy to accumulate in organisms, so the potential harm to human body and other organisms is very serious. In recent years, the problem of heavy metal pollution in water has become more and more prominent, and it has become one of the most serious environmental problems in the world today. It is very necessary to treat heavy metal wastewater. [0003] Nano-titanium dioxide has a strong adsorption capacity for some heavy metal ions, and the adsorption speed is fa...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 唐玉朝黄显怀汪赛奇沈珺
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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