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A biomass-based adsorption material used for removing harmful anions from water and a preparing method thereof

A technology for adsorbing materials and biomass, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, alkali metal compounds, etc. It can solve the problems of complex preparation process and high cost, and achieve simple process, simple operation and wide adsorption range. Effect

Inactive Publication Date: 2016-06-08
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of these materials is mostly complicated and the cost is relatively high.

Method used

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  • A biomass-based adsorption material used for removing harmful anions from water and a preparing method thereof
  • A biomass-based adsorption material used for removing harmful anions from water and a preparing method thereof
  • A biomass-based adsorption material used for removing harmful anions from water and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Biomass material powder obtained by crushing wheat straw prepared from wheat straw as raw material (scanning electron microscope photos of the figure 1 shown), the preparation of biomass material / Fe 3 o 4 (sample 1), and carry out the test of adsorption performance to sample 1.

[0037] In a 100mL flask, add 50mL ultrapure water, 4.5gFeCl 3 ·6H 2 O, 2.3g FeSO 4 ·7H2 O, 0.5 g of biomass material powder obtained by mechanical crushing, fully stirred and dispersed, passed nitrogen gas for 3 minutes, began to add ammonia water dropwise, added 10 mL of ammonia water, and continued nitrogen gas flow for 2 minutes. After the system was closed, it was placed in an oil bath at 70°C for 4 hours to react. After the reaction was terminated, the reaction product was repeatedly washed with water, magnetically separated, and dried to obtain a biomass-based adsorption material sample 1 for removing harmful anions in water.

[0038] Take 0.05g of sample 1, put in 100mLAsO 4 3- In...

Embodiment 2

[0042] Wheat straw was used as raw material to prepare biomass material powder obtained by crushing wheat straw, and biomass material / iron-aluminum (hydr) oxide (sample 2) was prepared, and the adsorption performance of sample 2 was tested.

[0043] In a 100mL flask, add 50mL ultrapure water, 4.5gFeCl 3 ·6H 2 O, 2.3g FeSO 4 ·7H 2 O, 9.4gAl(NO 3 ) 3 9H 2 O, 0.5 g of biomass material powder obtained by mechanical crushing, fully stirred and dispersed, passed nitrogen gas for 3 minutes, began to add ammonia water dropwise, added 20 mL of ammonia water, and continued nitrogen gas flow for 2 minutes. After the system was closed, it was placed in an oil bath at 70°C for 4 hours to react. After the reaction was terminated, the reaction product was repeatedly washed with water, magnetically separated, and dried to obtain a biomass-based adsorption material sample 2 for removing harmful anions in water.

[0044] Take 0.1g of sample 2 and place in 100mLF - solution, stirred for 4...

Embodiment 3

[0046] Wheat straw was used as a raw material to prepare biomass material powder obtained by crushing wheat straw, to prepare biomass material / iron-aluminum (hydr) oxide (sample 3), and to test the adsorption performance of sample 3.

[0047] In a 100mL flask, add 50mL ultrapure water, 2.3g FeCl 3 ·6H 2 O, 1.2g FeSO 4 ·7H 2 O, 4.7gAl(NO 3 ) 3 9H 2 O, 0.5 g of biomass material powder obtained by mechanical crushing, fully stirred and dispersed, passed nitrogen gas for 3 minutes, began to add ammonia water dropwise, added 10 mL of ammonia water, and continued nitrogen gas flow for 2 minutes. After the system was closed, it was placed in an oil bath at 70°C for 4 hours to react. After the reaction was terminated, the reaction product was repeatedly washed with water, separated, and dried to obtain a biomass-based adsorption material sample 3 for removing harmful anions in water.

[0048] Take 0.1g of sample 3 and place in 100mLF - solution, stirred for 4 hours, and measure...

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Abstract

A biomass-based adsorption material used for removing harmful anions from water and a preparing method thereof are disclosed. The surface of the biomass-based adsorption material is loaded with iron-containing inorganic magnetic particles and / or aluminum-containing inorganic particles. The main raw material of the biomass-based adsorption material is agriculture waste. The harmful anions include F<->, AsO<2><-> and AsO<4><3->. Compared with materials adsorbing the harmful anions at present, the biomass-based adsorption material adopts the biomass agriculture waste as an adsorption substrate, and is simple in process, convenient in operation and suitable for treating water polluted by a plurality of harmful anions. A production scale can be large or small, thus facilitating popularization in remote rural areas and individual users, and allowing the biomass-based adsorption material to be suitable for large-scale water treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment adsorption materials. More specifically, it relates to a biomass-based adsorption material for removing harmful anions in water and a preparation method thereof. Background technique [0002] Harmful anions in water include fluoride ions, arsenic-containing anions and so on. Fluoride is an essential element for the growth of mammalian teeth and bones, but excessive intake of fluorine can lead to dental fluorosis, skeletal fluorosis, and some nervous system diseases. The intake of arsenic can lead to cardiovascular diseases and nervous system diseases, and can also greatly increase the chances of lung, liver, kidney, bladder, and skin cancer. my country is one of the water-poor countries with less per capita water resources in the world. The water supply in many cities is insufficient. In addition, the quality of drinking water in our country is not high. Hundreds of millions of people in...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
Inventor 吴敏黄勇李博轩
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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