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A kind of adsorbent and its preparation method for simultaneously strengthening the removal of trace phosphorus and organic matter

An adsorbent and organic matter technology, which is applied in the field of adsorbent and its preparation, can solve the problems that organic matter and phosphorus cannot be removed at the same time, and the removal rate of trace phosphorus in water is low, so as to achieve good adsorption and removal effect, improve adsorption capacity, and increase adsorption point. bit effect

Active Publication Date: 2018-09-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the existing adsorbents have a low removal rate of trace phosphorus in water and cannot remove organic matter and phosphorus at the same time, and provides an adsorbent and a preparation method for simultaneously strengthening the removal of trace phosphorus and organic matter

Method used

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  • A kind of adsorbent and its preparation method for simultaneously strengthening the removal of trace phosphorus and organic matter
  • A kind of adsorbent and its preparation method for simultaneously strengthening the removal of trace phosphorus and organic matter
  • A kind of adsorbent and its preparation method for simultaneously strengthening the removal of trace phosphorus and organic matter

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specific Embodiment approach 1

[0028] Embodiment 1: In this embodiment, the adsorbent for simultaneously strengthening the removal of trace amounts of phosphorus and organic matter is a lanthanum-polyacrylonitrile-based carbon nanofiber material, which is obtained by uniformly loading nanoscale lanthanum compounds inside and on the surface of carbon nanofibers.

[0029] The composite carbon material prepared by the present invention has an obvious adsorption and removal effect on trace phosphorus, and can still effectively adsorb and remove orthophosphate in water even in the presence of organic matter, and the removal rate of orthophosphate can reach 100%, and can At the same time, organic matter in water is removed.

specific Embodiment approach 2

[0030] Specific embodiment two: this embodiment strengthens the preparation method of the adsorbent that removes trace amount of phosphorus and organic matter at the same time, carries out according to the following steps:

[0031] 1. La(NO 3 ) 3 ·6H 2 Dissolve O in DMF, then add PAN, heat at 50-100°C until PAN is completely dissolved to obtain a DMF solution of PAN, then perform high-voltage electrospinning on the DMF solution of PAN to obtain a spun film, and pass the obtained spun film through After lye treatment, use deionized water to repeatedly rinse until the pH is neutral, and dry;

[0032] 2. Place the dried spinning film in a tube furnace, pre-oxidize it in the air, and then carbonize it under the protection of nitrogen. Soak the carbonized material in alkali solution, rinse it with deionized water after soaking The carbon material is neutralized and dried to obtain the adsorbent.

[0033] In this embodiment, the raw materials for the preparation of a novel adsor...

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one, PAN and La(NO 3 ) 3 ·6H 2 O mass ratio is (1~10):1. Others are the same as in the second embodiment.

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Abstract

The invention provides an adsorbent for simultaneously strengthening removal of trace phosphorus and organic matter and a preparation method thereof, relates to an adsorbent and a preparation method thereof and aims at solving the problem that an existing adsorbent has low removal rate to the trace phosphorus in water and cannot remove the organic matter and phosphorus simultaneously.The adsorbent is a lanthanum-polyacrylonitrile based carbon nano fiber material.The method comprises the steps that 1, La(NO3)3 6H2O is dissolved in DMF, PAN is added, dissolution is performed to obtain a DMF solution of the PAN, high-pressure electrostatic spinning is conducted on the solution to obtain a spinning membrane, the obtained spinning membrane is subjected to alkali solution treatment, then repeated flushing is performed by using deionized water, and drying is performed; 2, the dried spinning membrane is put in a tubular furnace, pre-oxidation and carbonization are conducted in the air, the carbonized material is immersed in an alkali solution, a carbon material is flushed with the deionized water to be neutral after soaking, and drying is performed to obtain the adsorbent.The adsorbent can simultaneously and effectively remove the trace phosphorus and the organic matter and is used in the field of carbon adsorption materials.

Description

technical field [0001] The invention relates to an adsorbent and a preparation method thereof. Background technique [0002] With the improvement of living standards, people pay more and more attention to the safety of drinking water, and the requirements for water quality are becoming more and more stringent. People can directly touch the tap water, so the quality of the tap water directly affects people's evaluation of the water treatment system. Tap water often needs to stay in the pipe network for a long time. In some areas, this time can be as long as 2 days. The longer the residence time, the greater the possibility of drinking water being polluted again by the pipe network—the growth and reproduction of microorganisms in the pipe network will cause It directly affects the quality of tap water and buryes hidden dangers for people's health. Therefore, the biological stability of drinking water needs to be solved urgently. [0003] There are many ways to control the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/58C02F101/10C02F101/30
CPCB01J20/0207B01J20/205B01J20/28004C02F1/288C02F2101/105C02F2101/30
Inventor 王威张欣桐何皎洁冯惠王俏崔福义
Owner HARBIN INST OF TECH
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