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Efficient phosphorus and heavy metal removal biochar, and preparation method and application thereof

A biochar, heavy metal technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., to achieve the effect of simple preparation process, excellent phosphorus removal effect, and excellent heavy metal removal ability

Active Publication Date: 2016-07-20
BIOGAS SCI RES INST MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since heavy metal pollution has become increasingly prominent in recent years, how to prepare products that meet the above requirements with high-efficiency phosphorus removal and heavy metal removal capabilities is a challenge in this field.

Method used

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  • Efficient phosphorus and heavy metal removal biochar, and preparation method and application thereof
  • Efficient phosphorus and heavy metal removal biochar, and preparation method and application thereof
  • Efficient phosphorus and heavy metal removal biochar, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) crab shells are dried and pulverized;

[0029] (2) The product obtained in step (1) was placed in a muffle furnace, and was pyrolyzed at 800° C. for 0.5 hour under a nitrogen atmosphere, and the obtained product was ground to a particle size of 50 mesh before use.

Embodiment 2

[0031] (1) crab shells are dried and pulverized;

[0032] (2) The product obtained in step (1) was placed in a muffle furnace, and was pyrolyzed at 900° C. for 3 hours under a nitrogen atmosphere, and the obtained product was ground to a particle size of 200 mesh before use.

Embodiment 3

[0034] (1) Shrimp shells are dried and pulverized;

[0035] (2) The product obtained in step (1) was placed in a muffle furnace, and was pyrolyzed at 800° C. for 2 hours under a nitrogen atmosphere, and the obtained product was ground to a particle size of 80 mesh before use.

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PUM

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Abstract

The invention provides a method for preparing efficient phosphorus removal biochar by shellfish waste. The method includes: (1), washing and drying shrimp and crab shells for standby application; (2), putting products obtained in the step (1) in a muffle furnace, and pyrolyzing the products at the high temperature of 300-900 DEG C under the nitrogen condition or oxygen limiting condition for 0.5-3 hours to obtain the biobar. The shrimp and crab shells include at least one of crab shells, shrimp shells or lobster shells. The obtained biochar has excellent phosphorus adsorption effect, and adsorbing capacity of the biochar to the phosphorus can reach 180mg / g; the obtained biochar also has excellent heavy metal removal capability; modification of the obtained biochar is not needed, preparation process is simple, raw materials are easy to obtain and cheap, and the biochar has quite broad market application prospect.

Description

technical field [0001] The invention belongs to the field of adsorption material technology and resource utilization of waste biomass, and specifically relates to a biochar for efficient phosphorus and heavy metal removal, a preparation method and an application thereof. Background technique [0002] Among all kinds of water pollution, eutrophication caused by excess phosphorus is common. Researchers have been studying this for a long time. Generally speaking, the use of activated carbon for phosphorus removal is a conventional choice, but due to the high cost of activated carbon, it is not conducive to large-scale promotion and application. [0003] In recent years, the recycling of waste resources has attracted more and more attention. For water body phosphorus pollution, the use of waste resources for treatment can significantly reduce the cost of raw materials for water body treatment. [0004] However, in the prior art, when using waste resources, especially waste bi...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/20B01J2220/4881C02F1/283C02F2101/20
Inventor 代立春谭芙蓉何明雄吴波王彦伟
Owner BIOGAS SCI RES INST MIN OF AGRI
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