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Method for preparing charcoal/attapulgite nanocomposite from attapulgite and hogwash fat

A nano-composite material and attapulgite technology, which is applied in the field of nano-composite material preparation, can solve the problems of environmental pollution, development and utilization of urban catering swill, illegal operation, etc., and achieve the effect of simple process

Active Publication Date: 2015-06-03
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the customs and treatment measures are different in different places, and the concentration of oil in the discharged swill is different, but because my country has not effectively developed and utilized urban catering swill, it has caused a series of social problems such as environmental pollution, resource waste, and illegal business operations.

Method used

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  • Method for preparing charcoal/attapulgite nanocomposite from attapulgite and hogwash fat
  • Method for preparing charcoal/attapulgite nanocomposite from attapulgite and hogwash fat

Examples

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Effect test

Embodiment 1

[0020] Example 1: Weigh 100kg attapulgite, directly immerse in 1000L swill oil, absorb for 4 hours, press filter, then transfer to an autoclave at 200 oC for 24 hours, wash with ethanol after cooling, dry and crush to 200 mesh to obtain loaded biochar / attapulgite Rodstone nanocomposites. The adsorption capacities of the composite for Cu(II), Cd(II) and Pb(II) were 28, 38 and 105 mg / g, respectively.

Embodiment 2

[0021] Example 2: Weigh 100kg attapulgite, directly immerse in 1000L swill oil, absorb for 12 hours, press filter, then transfer to an autoclave at 450 oC for 72 hours, wash with ethanol after cooling, dry and crush to 200 mesh to obtain loaded biochar / attapulgite Rodstone nanocomposites. The adsorption capacities of the composite for Cu(II), Cd(II) and Pb(II) were 25, 36 and 98 mg / g, respectively.

Embodiment 3

[0022] Example 3: Weigh 100kg attapulgite, directly immerse in 1000L swill oil, absorb for 24 hours, press filter, then transfer to an autoclave at 300 oC for 36 hours, wash with ethanol after cooling, dry and crush to 200 mesh to obtain loaded biochar / attapulgite Rodstone nanocomposites. The adsorption capacities of the composite for Cu(II), Cd(II) and Pb(II) were 30, 41 and 112 mg / g, respectively.

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Abstract

The invention discloses a method for preparing a charcoal / attapulgite nanocomposite from attapulgite and hogwash fat. The method comprises the following steps: firstly, the attapulgite is used for absorbing the hogwash fat directly, the attapulgite with absorbed grease is subjected to anaerobic carbonization after filter pressing, and finally, the attapulgite nanocomposite loaded with charcoal is obtained after washing, drying and sieving. By means of the method, the hogwash fat is recycled, and further, a novel approach is provided for water purification as well as soil improvement and repair through the synergistic effect of the attapulgite and the charcoal.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite material, in particular to a method for preparing a biochar / attapulgite nanocomposite material by using attapulgite and swill oil. Background technique [0002] With the rapid development of the economy, more and more areas are polluted by heavy metals, and environmental problems are becoming more and more prominent, especially common heavy metal elements such as lead and cadmium, which cause serious pollution to water bodies and land. Among the numerous water purification and soil remediation materials, biochar / clay mineral composites have received extensive attention in recent years. [0003] Studies have shown that the adsorption and decolorization properties of attapulgite can be further increased by loading organic matter on attapulgite after calcination or hydrothermal synthesis. Wu Xueping prepared attapulgite / carbon nanocomposites using attapulgite and glucose as raw materials, u...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
Inventor 王爱勤牟斌宗莉康玉茹王文波
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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