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Attapulgite heavy metal adsorbent and preparation method thereof

A technology of attapulgite and heavy metals, which is applied in the field of environmental treatment, can solve the problems of expensive equipment, complicated operation and high energy consumption, and achieve the effects of low price, large adsorption capacity and high removal efficiency

Inactive Publication Date: 2015-08-05
HEFEI ALL ROUND POLYMER MATERIAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have high efficiency in removing heavy metals, but have problems such as high cost, high energy consumption, complicated operation, and expensive equipment, which limit their application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Non-limiting examples of the present invention are as follows:

[0017] A kind of attapulgite heavy metal adsorbent is prepared from the following component raw materials by weight (kg):

[0018] Attapulgite 15, fresh kelp 60, glutinous rice flour 4, xanthan gum 4, mannitol 4, hydroxyethyl cellulose 1.5, Tween 80 0.15, sodium hexametaphosphate 0.8, sodium benzoate 0.08.

[0019] The preparation method of the attapulgite heavy metal adsorbent comprises the following steps:

[0020] (1) Mix attapulgite and sodium hexametaphosphate, grind them together to 400 mesh, treat at 500°C for 3 hours, add glutinous rice flour after cooling, and mix evenly to obtain a mixed powder;

[0021] (2) Soak fresh kelp overnight at room temperature, rinse with water, dry at 80°C for 3 hours, grind and pulverize to obtain kelp powder; add the kelp powder to the mixed powder obtained in step (1), and stir evenly Add 4% acetic acid solution according to the solid-liquid weight ratio of 1:1, s...

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PUM

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Abstract

The invention discloses an attapulgite heavy metal adsorbent, which comprises the following raw materials by weight part: 10-20 parts of attapulgite, 50-80 parts of fresh sea-tangle, 3-5 parts of sweet rice flour, 3-5 parts of xanthan gum, 3-5 parts of mannitol, 1-2 parts of hydroxyethyl cellulose, 0.1-0.2 parts of tween 80, 0.5-1 part of sodium hexametaphosphate and 0.05-0.1 parts of sodium benzoate. The heavy metal adsorbent has the advantages of strong adsorption capability, large adsorption capacity and high removal efficiency, and has the characteristics that property is stable, recovery and reutilization are easy, raw material source is wide, cost is low, no secondary pollution is generated, and utility value is high.

Description

technical field [0001] The invention relates to the field of environmental treatment, in particular to an attapulgite heavy metal adsorbent and a preparation method thereof. Background technique [0002] The wastewater discharged from industrial production often contains heavy metal ions, which seriously pollute the environment. At the same time, organisms ingest heavy metals from them, enrich them through the food chain, enter the human body, cause chronic poisoning, and pose a potential threat to human health. The methods for treating heavy metals in wastewater mainly include adsorption, electrolysis, ion exchange and precipitation. These methods have high efficiency in removing heavy metals, but have problems such as high cost, high energy consumption, complicated operation, and expensive equipment, which limit their application. [0003] Adsorption is a commonly used heavy metal treatment method, the key lies in the selection of a suitable adsorption medium. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 王贵东宋睿
Owner HEFEI ALL ROUND POLYMER MATERIAL FACTORY