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Attapulgite-biomass activated carbon soil restoration material and preparation method thereof

A technology of attapulgite and soil remediation, which is applied in the field of high-value utilization of biomass resources, and can solve the problem of affecting the specific surface area and pore structure of carbonization products, easy coking of rapeseed oil residue, and unrealized biomass industrial solid waste resources. High-value utilization level and other issues, to achieve the effect of enhanced adsorption and solidification, low cost, and prevention of coking

Active Publication Date: 2017-07-14
常州纳欧新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current treatment method is to use these rapeseed oil residues as plant fertilizers, but this has not achieved the high-value utilization of biomass industrial solid waste resources
The use of rapeseed oil residue as a carbon source opens up a new direction for the high-value utilization of rapeseed oil residue solid waste. However, rapeseed oil residue is easy to coke during the pyrolysis process, which seriously affects the ratio of its carbonization products. Surface Area and Pore Structure

Method used

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  • Attapulgite-biomass activated carbon soil restoration material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Evenly mix 1.0 kg of rapeseed oil residue and 2.0 kg of attapulgite powder, then place the resulting mixture under a nitrogen atmosphere, and pyrolyze it at a temperature of 450°C for 6 hours to obtain attapulgite / charcoal composite Material;

[0020] 2. Take 1.0 kg of the attapulgite / carbon composite material obtained in step 1 and add it to 10.0 kg of hydrochloric acid solution with a hydrogen ion concentration of 3.0 mol / liter, perform hydrothermal treatment at a temperature of 180°C for 6 hours, filter, wash, and dry. That is, the attapulgite / activated carbon composite material is obtained.

Embodiment 2

[0022] 1. Evenly mix 6.0 kg of rapeseed oil residue and 2 kg of attapulgite powder, then place the resulting mixture under a nitrogen atmosphere, and pyrolyze it at 650°C for 2 hours to obtain attapulgite / charcoal composite Material;

[0023] 2. Take 2.0 kg of the attapulgite / carbon composite material obtained in step 1 and add it to 6.7 kg of sulfuric acid solution with a hydrogen ion concentration of 10.0 mol / liter, perform hydrothermal treatment at a temperature of 150°C for 12 hours, filter, wash, and dry. That is, the attapulgite / activated carbon composite material is obtained.

Embodiment 3

[0025] 1. Evenly mix 3.5 kg of rapeseed oil residue and 2.0 kg of attapulgite powder, then place the resulting mixture under a nitrogen atmosphere, and pyrolyze it at a temperature of 550°C for 4 hours to obtain attapulgite / charcoal composite Material;

[0026] 2. Take 1.0 kg of the attapulgite / carbon composite material obtained in step 1 and add it to 5.0 kg of nitric acid solution with a hydrogen ion concentration of 6.5 mol / liter, perform hydrothermal treatment at a temperature of 165°C for 9 hours, filter, wash, and dry. That is, the attapulgite / activated carbon composite material is obtained.

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Abstract

The invention belongs to the field of high-value utilization of biomass resources and especially relates to an attapulgite-biomass activated carbon soil restoration material and a preparation method thereof. According to the preparation method, attapulgite and rapeseed oil residue which are used as raw materials firstly undergo one-step high-temperature pyrolysis to prepare an attapulgite / carbon composite material; and then the attapulgite / carbon composite material undergoes acid activation treatment to prepare an attapulgite / activated carbon composite material.

Description

technical field [0001] The invention belongs to the field of high-value utilization of biomass resources, and in particular relates to an attapulgite-biomass activated carbon soil restoration material and a preparation method thereof. Background technique [0002] The high-value utilization of industrial solid waste resources has become the development trend of a resource-saving and environment-friendly society. Rapeseed oil residue is a by-product of rapeseed oil extraction, which belongs to the solid waste of biomass industry. According to statistics, my country's rapeseed output in 2016 was 14 million tons, which will undoubtedly produce a large amount of rapeseed oil residue solid waste. [0003] The current treatment method is to use these rapeseed oil residues as plant fertilizers, but this has not achieved the high-value utilization of biomass industrial solid waste resources. The use of rapeseed oil residue as a carbon source opens up a new direction for the high-v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/04
Inventor 姚超左士祥刘文杰王灿刘展李霞章姚群
Owner 常州纳欧新材料科技有限公司
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