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Method for preparing adsorbent to purify trace molybdenum in water body using garlic straw as raw material

A technology for purifying water and garlic stalks, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., to achieve good effect, good adsorption effect, and enhanced adsorption performance

Active Publication Date: 2021-04-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on the removal of excessive molybdenum in drinking water is in its infancy in my country, and the traditional molybdenum removal methods are difficult to meet the requirements of actual production. Therefore, it is imperative to develop an efficient, economical, environmentally friendly, and environmentally friendly adsorbent.

Method used

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  • Method for preparing adsorbent to purify trace molybdenum in water body using garlic straw as raw material
  • Method for preparing adsorbent to purify trace molybdenum in water body using garlic straw as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 10kg of garlic stalk particles that have been crushed to a particle size of 50 mesh, and mix it with 300 liters of 0.1M ZrOCl 2 ·8H 2 O solution was mixed, stirred and reacted for 24 hours, filtered, washed and dried, and the obtained solid was the adsorption material. Take the adsorbent material, according to 1kg / m 3 Add the proportion of molybdenum into the water containing 20mg / L of molybdenum, stir for 24 hours, filter, send the filtrate to analyze and detect the concentration of molybdenum, and calculate the adsorption efficiency. The relevant results obtained are as figure 1 , 2 As shown, it can be seen that the adsorbent can maintain an adsorption effect of more than 80% on molybdenum between pH 1-6, and in fact it only takes 4 hours to reach the adsorption equilibrium state. Therefore, it is a good adsorption Materials for separating molybdenum.

Embodiment 2

[0021] Weigh 20kg of garlic straw granules that have been crushed to a particle size of 100 mesh, and mix with 500 liters of 0.1M TiOSO 4 2H 2 O solution was mixed, stirred and reacted for 24 hours, filtered, washed and dried, and the obtained solid was the adsorption material. Take the adsorption material, according to 2kg / m 3 Add the proportion of molybdenum into the water containing 20mg / L of molybdenum, stir for 24 hours, filter, send the filtrate to analyze and detect the concentration of molybdenum, and calculate the adsorption efficiency. The relevant results obtained are as figure 1 , 2 As shown, it can be seen that the adsorbent can maintain an adsorption effect of more than 60% on molybdenum at a pH value of 2-4, and in fact it only takes 3 hours to reach the adsorption equilibrium state. Therefore, it is a good adsorption Materials for separating molybdenum.

Embodiment 3

[0023] Weigh 10kg of garlic stalk particles that have been crushed to 80 mesh particle size, and mix with 300 liters of 0.1M FeCl 3 ·6H 2 O solution was mixed, stirred and reacted for 16 hours, filtered, washed and dried, and the obtained solid was the adsorption material. Take the adsorption material, according to 2kg / m 3 Add the proportion of molybdenum into the water containing 20mg / L of molybdenum, stir for 24 hours, filter, send the filtrate to analyze and detect the concentration of molybdenum, and calculate the adsorption efficiency. The relevant results obtained are as figure 1 , 2 As shown, it can be seen that the adsorbent can maintain an adsorption effect of more than 80% on molybdenum between pH 2-4, and in fact it only takes 4 hours to reach the adsorption equilibrium state. Therefore, it is a good adsorption Materials for separating molybdenum.

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Abstract

The invention provides a method for preparing an adsorbent to purify trace amounts of molybdenum in water by using garlic straw as a raw material, and relates to the technical field of adsorption and removal of molybdenum in water. The method firstly prepares an adsorbent, prepares a certain concentration of adsorption enhancer solution, then takes the garlic straw particles that have been crushed to a certain particle size and adds them to each solution, after stirring and reacting, filtering and washing, and drying in a constant temperature drying box to obtain corresponding adsorbent material. When purifying molybdenum-containing wastewater, the adsorption material and the adsorption liquid are mixed in a certain proportion at a certain pH value, stirred for a period of time, and then filtered to achieve the ideal adsorption effect. The invention uses waste garlic peels and straws as raw materials, carries out modification treatment on them, loads relevant high-valent ions to enhance their adsorption performance, and prepares biomass adsorption materials, which has excellent adsorption effect on Mo, and the effect of loading ions is different. Different adsorption capacities are different, and the adsorbed Mo can also be desorbed to achieve the purpose of resource recovery.

Description

technical field [0001] The invention relates to a method for preparing and using a new material for adsorbing and removing molybdenum in water, in particular using garlic stalks as a basic raw material and adopting the method of adsorbing and loading high-valent metal ions to realize the separation and removal of molybdenum. [0002] technical background [0003] Molybdenum is a strategic metal resource, mainly used in the production of ferroalloys and metal molybdenum materials. my country has abundant reserves of molybdenum resources (accounting for 25% of the world), and the main mineral for extracting molybdenum is molybdenite (MoS 2 ), an important feature of molybdenum mines in my country is that there are many large-scale deposits. Jinduicheng in Shaanxi, Luanchuan in Henan, Yangjiazhangzi in Liaoning, and Daheishan in Jilin are all world-class large-scale mines. Only Luanchuan and Jinduicheng The output of the two places together accounts for 50% of the whole country....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/0207B01J20/0211B01J20/0229B01J20/0248B01J20/0262B01J20/0281B01J20/0288B01J20/22B01J20/24C02F1/28C02F2101/20
Inventor 黄凯王耀耀
Owner UNIV OF SCI & TECH BEIJING
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