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Method for preparing adsorbent of heavy metal ions in water

A technology of heavy metal ions and adsorbents, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., to achieve the effect of short process, high removal rate and simple process

Inactive Publication Date: 2012-02-01
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compounds containing mercapto groups have a strong chelating effect on certain heavy metal ions, and there are few reports on the modification of nano-titanium dioxide with compounds containing mercapto groups.

Method used

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  • Method for preparing adsorbent of heavy metal ions in water
  • Method for preparing adsorbent of heavy metal ions in water
  • Method for preparing adsorbent of heavy metal ions in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 5 mL of titanium tetrachloride, dissolve it in 10 mL of distilled water, then add 5 g of thiourea, adjust the pH to 3 with ammonia water, stir at a low speed for 5 h; then dry it at 100-105 °C; Calcined at 150°C to obtain yellow powder, which is the sulfur-modified nano-titanium dioxide adsorption material.

Embodiment 2

[0027] Take 5 mL of titanium tetrachloride, dissolve it in 10 mL of distilled water, then add 10 grams of thiourea, adjust the pH to 5 with ammonia water, stir at a low speed for 8 hours; then dry it at 100-105 °C; The corresponding sulfur-modified nano-titanium dioxide adsorption material can be obtained by calcining in a muffle furnace under certain conditions.

Embodiment 3

[0029] Take 5 mL of titanium tetrachloride, dissolve it in 10 mL of distilled water, then add 15 grams of thiourea, adjust the pH to 7 with ammonia water, stir at a low speed for 8 hours; then dry it at 100-105 °C; Calcined in a muffle furnace, the corresponding sulfur-modified nano-titanium dioxide adsorption material can be obtained.

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Abstract

The invention discloses a method for preparing adsorbent of heavy metal ions in water. The method is characterized by comprising the following steps of: preparing titanium tetrachloride serving as raw material, preparing water in mass which is 0.4 to 25 times that of titanium tetrachloride and preparing thiourea in mass which is 0.2 to 5 times that of titanium tetrachloride; adding the water and the thiourea into the titanium tetrachloride; regulating pH value to between 1 and 9 by ammonia water; slowly stirring for 1 to 10 hours; drying the mixture at the temperature of 100 to 105 DEG C; andfiring the dried product at the temperature of 150 to 1,000 DEG C to obtain the sulphur modified nano-titanium dioxide adsorption material. The adsorption material prepared by the method has large specific area and obvious effect in removing heavy metal ions in water.

Description

technical field [0001] The invention belongs to the field of inorganic materials and heavy metal removal in water treatment technology, and in particular relates to a preparation method of an adsorbent for heavy metal ions in water. Background technique [0002] With the rapid growth of human society's demand for heavy metal resources, a large amount of wastewater containing heavy metals is produced in the process of production, processing and use, such as industrial and mining enterprises, metallurgy, chemical industry, battery manufacturing, electroplating and other industrial industries. Production wastewater contains Heavy metals are discharged into water bodies and cause water pollution. Heavy metals cannot be decomposed in water and soil, and are easy to form a food chain. After entering the human body, heavy metals are easy to cause accumulation and poisoning. Combined with other toxins to generate more toxic organisms. For example, Minamata disease and bone pain di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F101/20B01J20/06B01J20/30
Inventor 李道荣段素华钟崇林王霞谢玲玲李申万东锦方宝玲
Owner HENAN UNIVERSITY OF TECHNOLOGY
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