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Application of Tourmaline/Chitosan Composites in Landfill Leachate Treatment

A technology of landfill leachate and composite materials, which is applied in the application field of tourmaline/chitosan composite materials in landfill leachate treatment, and achieves the effect of wide application prospects, economic value and excellent adsorption performance

Active Publication Date: 2021-01-12
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on compounding chitosan and tourmaline and using it to improve the treatment capacity of landfill leachate

Method used

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  • Application of Tourmaline/Chitosan Composites in Landfill Leachate Treatment
  • Application of Tourmaline/Chitosan Composites in Landfill Leachate Treatment
  • Application of Tourmaline/Chitosan Composites in Landfill Leachate Treatment

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Embodiment Construction

[0026] The application method of the present invention will be described in detail below in conjunction with specific embodiments.

[0027] In the present invention, tourmaline adopts black tourmaline powder, and main chemical composition (mass fraction) is Al 2 o 3 34.98%, B 2 o 3 10.94%, K 2 O 0.036%, Na 2 O 0.91%, CaO trace, MgO 0.2%, SiO 2 34.6%, Fe 2 o 3 15.8%.

[0028] Preparation of Tourmaline / Chitosan Composite

[0029] Put 10g of tourmaline and 10g of chitosan into a 250ml beaker, stir well with a glass rod, and then slowly pour tetrabutyl titanate, so that tetrabutyl titanate is submerged in the mixture of tourmaline and chitosan. Stir the rod evenly until it becomes viscous, then put the beaker into a constant temperature water bath, and use sol-gel technology to grow a chitosan film on the surface of tourmaline particles. The heat treatment time is 3 hours and the treatment temperature is 60 degrees Celsius.

[0030] Take out the beaker after the heat tr...

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Abstract

The invention discloses an application of a tourmaline / chitosan composite in treatment of landfill leachate. The tourmaline / chitosan composite is put in the landfill leachate, the pH value is adjustedto be 6-8, and sufficient stirring is performed to remove cadmium ions, copper ions and lead ions in the landfill leachate. The ratio of the concentration of the cadmium ions in the landfill leachateto the use quantity of the tourmaline / chitosan composite is (1-100 mu g / L):(1-2 g), the ratio of the concentration of the copper ions in the landfill leachate to the use quantity of the tourmaline / chitosan composite is (200-400 mu g / L):(1-2 g), and the ratio of the concentration of the lead ions in the landfill leachate to the use quantity of the tourmaline / chitosan composite is (100-200 mu g / L):(1-2 g). The treatment capability of the landfill leachate can be improved while the use quantity of chitosan is reduced and the cost is reduced, and heavy metals in the landfill leachate are effectively removed.

Description

technical field [0001] The invention relates to the fields of novel material preparation and environmental protection, in particular to the application of a tourmaline / chitosan composite material in landfill leachate treatment. Background technique [0002] Chitosan is a natural polymer compound obtained by deacetylation of chitin widely present in the shells of shrimps, crabs or insects. Good chemical adsorption is widely used in the treatment of heavy metals, transition metals and dye wastewater, and chitosan is considered to be the most potential environment-friendly material in the field of water treatment, but the cost of chitosan is relatively high. [0003] As a new type of industrial mineral, tourmaline has high mechanochemical stability, high reusability, and no pollution to the environment. It is a good green and environmentally friendly mineral material, and its reserves are also very rich in our country. [0004] At present, there is no report on compounding chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30A01N43/16A01N59/14A01P3/00A01P1/00C02F1/28C02F1/50C02F103/06
CPCA01N43/16A01N59/14B01J20/041B01J20/06B01J20/08B01J20/103B01J20/24C02F1/281C02F1/286C02F1/50C02F2103/06
Inventor 陈则立朱华静
Owner TIANJIN VOCATIONAL INST