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Method for preparing ammonia nitrogen sorbent by utilizing abandoned strawberry leaves and application of sorbent

A strawberry leaf and adsorbent technology, applied in the field of water pollution treatment, can solve problems such as complicated process, secondary pollution, and high cost, and achieve the effects of high adsorption efficiency, low cost, and simple and easy pretreatment

Inactive Publication Date: 2012-01-11
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are costly, complicated, and prone to secondary pollution

Method used

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  • Method for preparing ammonia nitrogen sorbent by utilizing abandoned strawberry leaves and application of sorbent
  • Method for preparing ammonia nitrogen sorbent by utilizing abandoned strawberry leaves and application of sorbent
  • Method for preparing ammonia nitrogen sorbent by utilizing abandoned strawberry leaves and application of sorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Strawberry leaves were collected from Jurong Strawberry Garden in Jiangsu Province, washed three times with tap water to remove dust and soluble impurities on the leaf surface, and then dried indoors in the shade to remove water droplets on the leaf surface. The strawberry leaf after drying is earlier at 105 DEG C after killing green for 15 minutes, then baked at 70 DEG C for 10 hours to dry. The dried strawberry leaves are mechanically pulverized, and then sieved into 30-60 meshes with a standard sieve. Add the prepared adsorbent at a dose of 8g / L to an aqueous solution containing 25mg / L of ammonia nitrogen, shake at room temperature at 250r / min, and shake for 24 hours. The results show that the removal rate of ammonia nitrogen in this state is 84.6%. Under the same conditions, changing the particle size of the adsorbent to 60-80 mesh, 80-100 mesh and 100-200 mesh respectively, the obtained removal rates were 87.9%, 90.1% and 93.4%, respectively.

[0017] It can be s...

Embodiment 2

[0019] Strawberry leaves were collected from Jurong Strawberry Garden in Jiangsu Province, washed three times with tap water to remove dust and soluble impurities on the leaf surface, and then dried indoors in the shade to remove water droplets on the leaf surface. The strawberry leaf after drying is earlier at 105 DEG C after killing green for 15 minutes, then baked at 70 DEG C for 10 hours to dry. The dried strawberry leaves are mechanically pulverized, and then sieved into 30 meshes with a standard sieve. Add the prepared adsorbent at a dose of 4g / L to an aqueous solution containing 25mg / L of ammonia nitrogen, shake at room temperature at 250r / min, and shake for 24 hours. The results show that the removal rate of ammonia nitrogen in this state is 74.8%. Under the same conditions, changing the dosage of adsorbent to 6, 8, 10 and 12g / L respectively, the obtained removal rates were 79.1%, 81.3%, 82.4% and 83.0%, respectively.

[0020] It can be seen that within the dosage of...

Embodiment 3

[0022] Strawberry leaves were collected from Jurong Strawberry Garden in Jiangsu Province, washed three times with tap water to remove dust and soluble impurities on the leaf surface, and then dried indoors in the shade to remove water droplets on the leaf surface. The strawberry leaf after drying is earlier at 105 DEG C after killing green for 15 minutes, then baked at 70 DEG C for 10 hours to dry. The dried strawberry leaves are mechanically pulverized, and then sieved into 30 meshes with a standard sieve. Add the prepared adsorbent at a dose of 8g / L to an aqueous solution containing 5mg / L of ammonia nitrogen, shake at room temperature at 250r / min, and shake for 24 hours. The results show that the removal rate of ammonia nitrogen in this state is 100%. Under the same conditions, the ammonia nitrogen content in the solution was changed to 10, 15, 25, 50 and 100 mg / L respectively, and the resulting removal rates were 100%, 100%, 81.5%, 45.9% and 22.0%, respectively.

[0023]...

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Abstract

The invention discloses a method for preparing ammonia nitrogen sorbent by utilizing abandoned strawberry leaves and the application of the sorbent. The abandoned strawberry leaves are used as raw materials, and the raw materials are washed, aired, dried and crashed and then are sieved through a standard sieve to obtain the sorbent with the mesh number of 30 to 200. The sorbent is added to a water solution containing ammonia nitrogen and is surged for 20 hours on an oscillator, and the ammonia nitrogen in the water can be effectively removed. The raw materials of the sorbent recycles agricultural wastes, the cost is low, the preparation process is simple, and the raw materials have highly specific adsorption performance to the ammonia nitrogen in the water.

Description

technical field [0001] The invention belongs to the water pollution treatment technology in the field of environmental protection, and in particular relates to a method for preparing an ammonia nitrogen adsorbent by using discarded strawberry leaves and the application of the adsorbent. Background technique [0002] Excessive ammonia nitrogen entering rivers, lakes and other water bodies will promote eutrophication of the water body, reduce dissolved oxygen in the water, poison fish and other aquatic organisms, and seriously cause the water body to stink and deteriorate. Excessive ammonia nitrogen content in water also increases the cost of industrial water purification and even endangers human health. Therefore, wastewater containing excessive ammonia nitrogen in industrial and agricultural production needs to be treated to meet the discharge standards before entering the environment. The commonly used treatment methods for ammonia nitrogen in wastewater include nitrificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24C02F1/28C02F101/16
Inventor 刘海伟董元华刘云王海云
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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