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Adsorbent modified by natural material and preparing method and application thereof

A technology of natural materials and adsorbents, applied in applications, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve the problems of high treatment cost, easy blockage of membrane pores, etc. Solve the effects of difficult biochemical treatment

Active Publication Date: 2019-04-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that modified natural materials have a good adsorption effect on cations in water. For the current industrial treatment of candied fruit wastewater, the following methods are mainly used: electrolysis, incineration, biofilm purification, etc., not only the treatment cost is high, but also the wastewater Impurities in the membrane are easy to block the membrane pores or ion exchange resin

Method used

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  • Adsorbent modified by natural material and preparing method and application thereof
  • Adsorbent modified by natural material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] After cleaning the dust on the surface of the rice husk with water, drying, crushing, sieving, and then modifying the crushed rice husk, the modification method is as follows: take a certain amount of rice husk powder, and add 6% acetic acid solution to it (The mass ratio of adsorbent to acetic acid solution is 1:7), react at 50°C for 6h, and keep stirring. After the reaction, the rice husk powder was separated and dried, and then 0.5% ammonia solution was added thereto (the mass ratio of the adsorbent to the ammonia solution was 1:5), and the reaction was stirred and reacted at 50°C for 3h, and then washed and dried to obtain the improved Active rice husk adsorbent.

Embodiment 2

[0028] Take a certain amount of rice husk powder, add 12% acetic acid solution (the mass ratio of adsorbent to acetic acid solution is 1:4), react at 30°C for 3 hours, and keep stirring. After the reaction, the rice husk powder was separated and dried, and then 3% ammonia solution was added thereto (the mass ratio of the adsorbent to the ammonia solution was 1:1), and the reaction was stirred and reacted at 30°C for 1 hour, and then washed and dried to obtain the improved Active rice husk adsorbent.

Embodiment 3

[0030] Take a certain amount of rice husk powder, add 10% acetic acid solution (the mass ratio of adsorbent to acetic acid solution is 1:4), react at 30°C for 4 hours, and keep stirring. After the reaction was completed, the rice husk powder was separated and dried, and then 2% ammonia solution was added thereto (the mass ratio of the adsorbent to the ammonia solution was 1:4), and the reaction was stirred and reacted at 35°C for 2 hours, and then washed and dried to obtain the modified solution. Active rice husk adsorbent.

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Abstract

The invention discloses an adsorbent modified by a natural material and a preparing method and application thereof. The preparing method comprises the following steps of 1, smashing, wherein washed and dried rice shells are smashed and sieved; 2, modifying, wherein an appropriate quantity of the rice shells are taken, modified by acetic acid and ammonium hydroxide separately, cleaned and dried, and the modified rice shell adsorbent is prepared. The prepared adsorbent modified by the natural material can be applied to adsorption treatment of salt in high-salt-content candied fruit production wastewater, and is low in cost, environmentally friendly and safe; compared with unmodified rice shells, the adsorbent has higher hydrophilcity, is remarkably improved in adsorption capacity of Na + , is easy to prepare, has a good desalting effect on candied fruit production wastewater, and solves the difficulty that the candied fruit production wastewater is difficult to biodegrade to a certain degree; meanwhile, through ammonium hydroxide modifying, rice shell ammoniation is promoted, and the practical value of the adsorbent serving as livestock feed is improved.

Description

technical field [0001] The invention relates to an adsorption material modified by natural material rice husk, which is applied to the treatment of waste water from the production of high-salt candied fruit, aims at improving the biodegradability of waste water, and belongs to the field of sewage purification. Background technique [0002] With the rapid development of the times, people's requirements for the quality of life are getting higher and higher, and environmental protection is becoming more and more stringent. The problem of water pollution, especially the pollution of food industry wastewater has received widespread attention. Among them, the production wastewater of preserved fruits, candied fruit, canned food, pickles and other fresh food contains a large amount of sugar, pectin, pomace, organic acid, soluble Inorganic salts and various free metal cations and non-metal anions, such as Na + , Ca 2+ , Cl - , SO 4 2- etc., which makes the density and osmotic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22A23K10/37C02F1/28
CPCB01J20/22A23K10/37C02F1/286B01J2220/485Y02P60/87
Inventor 陈晓晖李亚黄清明
Owner FUZHOU UNIV