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Preparation method and application of water treatment material based on typha orientalis presl

A technology for water treatment and papyrus, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as lack of economic value and achieve the effect of strong adsorption capacity.

Inactive Publication Date: 2015-06-17
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] used cattail grass for the treatment of lead-containing wastewater, according to the literature (J. Serb. Chem. Soc. 76 (7) 1037–1047 (2011) The adsorption capacity is 3.719 mg / g, that is, 3.719 mg of lead ions can be adsorbed per gram of rush grass, which basically has no economic value

Method used

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  • Preparation method and application of water treatment material based on typha orientalis presl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Harvest the naturally growing cattail grass, wash it with tap water, dry it, put the cleaned cattail grass in a grinder, and grind it into particles with a particle size of 40-80 mesh, and place the pulverized cattail grass particles at a mass concentration of 0.1%. 3-aminopropyltrimethoxysilane methanol solution for 4 hours, take it out, put it in an oven, and bake it at 120°C for 4 hours, take it out, wash it with deionized water, and dry it to get chemically modified papyrus water Handle material.

[0019] Put 0.03g of the modified cattail grass material in 20ml of lead-containing wastewater, adjust the pH value of the solution to 5.3, and absorb it at 20°C for 4 hours. The concentration of lead ions in the lead wastewater is 1000mg / L. After the adsorption is completed, filter and pass the test. According to the amount of residual lead ions in the solution, the lead ion adsorption capacity of the cattail grass material is 295.1 mg / g, that is, 295.1 mg of lead ion can...

Embodiment 2

[0022] Harvest the naturally growing cattail grass, wash it with tap water, dry it, put the cleaned cattail grass in a grinder, and grind it into particles with a particle size of 40-80 meshes, and place the pulverized cattail grass particles at a mass concentration of 5% citric acid ethanol solution for 1 hour, take it out, put it in an oven, and bake it at 100°C for 12 hours, take it out, wash it with deionized water, and dry it to obtain a chemically modified cattail grass-based water treatment material.

[0023] Put 0.03g of the modified cattail grass material in 20ml of lead-containing wastewater, adjust the pH value of the solution to 5.6, and absorb it at 20°C for 4 hours. The concentration of lead ions in the lead wastewater is 500mg / L. After the adsorption is completed, filter and pass the test. According to the amount of residual lead ions in the solution, the lead ion adsorption capacity of the cattail grass material is 352.2 mg / g, that is, 352.2 mg of lead ion can b...

Embodiment 3

[0026] Harvest the naturally growing cattail grass, wash it with tap water, dry it, put the cleaned cattail grass in a grinder, and crush it into particles with a particle size of 40-80 meshes, and place the pulverized cattail grass particles at a mass concentration of 3% tartaric acid isopropanol solution for 2 hours, took it out, placed it in an oven, baked it at 120°C for 8 hours, took it out, washed it with deionized water, and dried it to obtain a chemically modified catkin-based water treatment material.

[0027] Put 0.03g of the modified cattail grass material in 20ml of lead-containing waste water, adjust the pH of the solution to 5.0, and absorb it at 20°C for 4 hours. The concentration of lead ions in the lead waste water is 2000 mg / L. After the adsorption is completed, filter and pass the test According to the amount of residual lead ions in the solution, the lead ion adsorption capacity of the cattail grass material is 336.2 mg / g, that is, 336.2 mg of lead ion can b...

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Abstract

The invention belongs to the field of water treatment materials, and relates to a preparation method and application of a water treatment material based on typha orientalis presl. The preparation method is characterized by performing chemical modification on the natural typha orientalis presl and comprises the specific process of cleaning, drying, grinding, chemical modification and the like of the typha orientalis presl. The water treatment material has the advantages of being purely natural and degradable, being recycled for 10 times through simple acid / alkaline treatment, and having a high adsorption capacity, which is 94.7 times that of the natural typha orientalis presl which is not modified, to lead ions in water solution. The water treatment material not only can be used for treating lead-ion-contained waste water in water treatment plants, but also can be applied to household water filters, thus having wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, and in particular relates to a preparation method of a cattail grass-based water treatment material and its application in treating lead-containing wastewater. Background technique [0002] Cattail grass, whose scientific name is Typha orientalis Presl, mostly grows by itself in watersides or ponds, and is widely distributed in East China and South China. The uses of rush grass include: (1) used to decorate garden pools, lakesides, and construct waterscapes; (2) used as materials for making artificial cotton and paper; (3) important materials for weaving straw mats, straw sandals, straw hats and other traditional utensils. [0003] Lead-containing wastewater comes from various battery workshops, mineral processing plants, petrochemical plants, etc. The battery industry is the most important source of lead-containing waste water, and every production of a battery causes at leas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 吕银祥
Owner FUDAN UNIV
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