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Technology for modifying and preparing adsorbent by aid of banyan leaves

An adsorbent and ficus leaf technology, which is applied in the fields of adsorbents, adsorbents and processes, can solve problems such as unsuitable large-scale applications, and achieve the effects of low cost and abundant raw material sources.

Inactive Publication Date: 2016-12-07
黄汉龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, effective separation processes for removing heavy metal ions in sewage include: precipitation, ion exchange, electrochemical treatment, membrane technology, evaporative solidification, reverse osmosis and electrodialysis, etc., but the application of these technologies is sometimes limited by technology and economy. In recent years, the method of removing heavy metals through the adsorption of living organisms has attracted attention. This method mainly uses hyperaccumulated plants, algae, and microorganisms to have a large adsorption capacity for heavy metals to remove heavy metals in wastewater, but using living organisms to remove heavy metals Treatment of sewage is limited by the biomass and growth characteristics of the organism itself, so so far this type of method is not suitable for large-scale applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select a certain amount of banyan leaves to soak in clear water, wash to remove soil and dust, then wash with distilled water, then put them in an oven at 50°C to dry to constant weight, and then crush the dried leaves with a pulverizer. Pass through a 200-mesh sieve, weigh 10g of powder and put it into a container, then pour isopropanol with a solubility of 20% into the container, and keep stirring to make it fully react. After 12 hours, filter the solution and wash it with distilled water. The cleaned product was dried in a drying oven at 40°C. After drying for 20 hours, the dried product was put back into the container, and then poured into 0.1mol / L NaOH solution, and kept stirring to make it fully react. After 2 hours, filter the solution and wash it with distilled water. The cleaned product is dried in a drying oven at 40°C. After drying for 20 hours, the dried product is put back into the container, and then poured into 0.5mol / L citric acid solution, stirred and r...

Embodiment 2

[0025] Select a certain amount of banyan leaves to soak in clean water, wash to remove dirt and dust, then wash with distilled water, then put them in an oven at 55°C to dry to constant weight, and then crush the dried leaves with a pulverizer. Pass through a 100-mesh sieve, weigh 20g of powder and put it into a container, then pour isopropanol with a solubility of 20% into the container, and keep stirring to make it fully react. After 13 hours, filter the solution and wash it with distilled water. The cleaned product was dried in a drying oven at 50°C. After drying for 15 hours, the dried product was put back into the container, and then poured into 0.5mol / L NaOH solution, and kept stirring to make it fully react. After 1 hour, filter the solution and wash it with distilled water. The cleaned product is dried in a drying oven at 50°C. After drying for 15 hours, the dried product is put back into the container, and then poured into 1mol / L Citric acid solution, stirred and reac...

Embodiment 3

[0027] Select a certain amount of banyan leaves to soak in clean water, wash to remove dirt and dust, then wash with distilled water, then put them in an oven at 60°C for drying to constant weight, and then crush the dried leaves with a pulverizer. Pass through a 100-mesh sieve, weigh 20g of powder and put it into a container, then pour isopropanol with a solubility of 20% into the container, and keep stirring to make it fully react. After 15 hours, filter the solution and wash it with distilled water. The cleaned product was dried in a drying oven at 60°C. After drying for 10 hours, the dried product was put back into the container, and then poured into 0.5mol / L NaOH solution, and kept stirring to make it fully react. After 1 hour, filter the solution and wash it with distilled water. The cleaned product is dried in a drying oven at 60°C. After drying for 10 hours, the dried product is put back into the container, and then poured into 1mol / L Citric acid solution, stirred and ...

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Abstract

The invention discloses a technology for modifying and preparing an adsorbent by the aid of banyan leaves. The technology includes soaking a certain quantity of fresh banyan leaves in clear water, washing the fresh banyan leaves and removing dust from the fresh banyan leaves; drying the banyan leaves until the weight of the banyan leaves is constant; smashing the banyan leaves to obtain powder and sieving the powder; collecting the powder; mixing the powder and isopropyl alcohol with each other to obtain mixtures and carrying out sufficient reaction on the mixtures; filtering, washing and drying the reacted mixtures; alkalifying the mixtures by the aid of NaOH solution; filtering, cleaning and drying the mixtures to obtain dried products; carrying out sufficient reaction on the dried products and citric acid solution to obtain reaction products; cleaning the reaction products by the aid of distilled water after the sufficient reaction is carried out and cleaning the reaction products until obtained solution is neutral; filtering and drying the solution to obtain the modified adsorbent.

Description

technical field [0001] The invention relates to an adsorbent, in particular to an adsorbent prepared by modification using plant leaves as a raw material and a process, which belongs to the field of adsorbent materials. Background technique [0002] With the rapid development of industrialization, there are more and more heavy metal wastewater. Various harmful substances in wastewater are enriched into the biological chain through the water body, and finally enter the human body, destroying normal physiological and metabolic activities, and causing great harm to organisms. [0003] At present, effective separation processes for removing heavy metal ions in sewage include: precipitation, ion exchange, electrochemical treatment, membrane technology, evaporative solidification, reverse osmosis and electrodialysis, etc., but the application of these technologies is sometimes limited by technology and economy. In recent years, the method of removing heavy metals through the adsor...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/24
Inventor 黄汉龙
Owner 黄汉龙
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