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A kind of preparation method of adsorbent capable of fractional recovery of pb2+ and 4-np

A 4-NP and adsorbent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, natural water treatment, etc., to achieve the effects of low cost, simple preparation, and easy operation

Inactive Publication Date: 2019-06-14
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • A kind of preparation method of adsorbent capable of fractional recovery of pb2+ and 4-np
  • A kind of preparation method of adsorbent capable of fractional recovery of pb2+ and 4-np
  • A kind of preparation method of adsorbent capable of fractional recovery of pb2+ and 4-np

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The conventional modified Hummers method is used to prepare GO; 0.5g NIPAm and 0.02g BIS are dissolved in 100mL of water, after dissolution, add 0.0615g of 4NP, dissolve it by ultrasound, add 1mL of APS (quality 0.05g), stir Add 0.8 g of GO, deoxygenate with nitrogen for 30 minutes, pour into a three-necked flask, add 50 μL of TEMED, and react for 24 hours at room temperature. Wash the material with a 1:1 mixture of methanol: ammonia water until 4NP cannot be detected in the spectrophotometer. Wash with deionized water to neutral. Vacuum drying at 30°C.

Embodiment 2

[0019] The conventional modified Hummers method is used to prepare GO; 0.5g NIPAm and 0.02g BIS are dissolved in 100mL of water, after dissolution, add 0.0615g of 4NP, dissolve it by ultrasound, add 1mL of APS (quality 0.05g), stir Add 0.1g of GO, deoxygenate with nitrogen for 30min, pour it into a three-neck flask, add 50μL of TEMED, and react for 24h at room temperature. Wash the material with a 1:1 mixture of methanol: ammonia water until 4NP cannot be detected in the spectrophotometer. Wash with deionized water to neutral. Vacuum drying at 30°C.

Embodiment 3

[0021] The conventional modified Hummers method is used to prepare GO; 0.5g NIPAm and 0.02g BIS are dissolved in 100mL of water, after dissolution, add 0.0615g of 4NP, dissolve it by ultrasound, add 1mL of APS (quality 0.05g), stir Add 0.3g of GO, deoxygenate with nitrogen for 30min, pour into a three-neck flask, add 50μL of TEMED, and react at room temperature for 24h. Wash the material with a 1:1 mixture of methanol: ammonia water until 4NP cannot be detected in the spectrophotometer. Wash with deionized water to neutral. Vacuum drying at 30°C.

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Abstract

The invention discloses a preparation method of an adsorbent capable of recovering Pb2+ and 4-NP in stages. The preparation method is as follows: dissolving N-isopropylacrylamide and methylenebisacrylamide in deionized water, adding 4 ‑NP, then add ammonium persulfate (APS), add GO under stirring, and finally add tetramethylethylenediamine (TEMED). Get NP. The preparation method of the material is simple, low in cost and easy to operate, and is suitable for the treatment of large-scale waste water containing Pb2+ and 4‑NP.

Description

Technical field [0001] The invention belongs to the technical field of adsorption materials, and specifically relates to a graded recovery of Pb 2+ And 4-NP adsorbent and its preparation method. Background technique [0002] Heavy metals have a wide range of uses in modern industry, and heavy metal pollution has increasingly become an environmental issue that people are concerned about. Heavy metals and their compounds are very stable and can enter the body through a variety of ways such as animal breathing, ingestion and skin absorption. Because heavy metals and their compounds are difficult to metabolize by the body, they will cause serious harm to the body. Lead is a typical highly toxic heavy metal pollutant. Even a very low concentration can cause serious harm to humans and animals. Ingestion of lead by the human body can inhibit the development of the brain, leading to serious diseases such as chronic nephritis, heart failure, reproductive disorders, anemia, and so on, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20C02F103/38
CPCB01J20/265C02F1/285C02F2101/20C02F2101/38
Inventor 蒋华麟田磊陈萍华刘军何文
Owner NANCHANG HANGKONG UNIVERSITY