A kind of iron, cadmium, arsenic ion adsorbent in water and preparation method thereof

An arsenic ion and adsorbent technology, applied in the field of metal ion adsorbent in water, can solve problems such as secondary pollution, and achieve the effects of strong adsorption capacity, simple preparation method and low preparation cost

Active Publication Date: 2019-08-09
河北省廊坊水文水资源勘测局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some traditional adsorbents will introduce new components after adsorbing metal ions, which will cause secondary pollution.

Method used

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  • A kind of iron, cadmium, arsenic ion adsorbent in water and preparation method thereof
  • A kind of iron, cadmium, arsenic ion adsorbent in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this example, fresh peony flowers were used as raw materials, and other chemical reagents were of analytical grade.

[0024] This embodiment provides an adsorbent for iron, cadmium, and arsenic ions and a preparation method thereof, wherein, the adsorbent is prepared by chemically modifying and solidifying peony flower dregs, and has good stability and is resistant to iron, cadmium, and arsenic ions. It has the characteristics of strong adsorption capacity of cadmium and arsenic ions.

[0025] The preparation method of described iron, cadmium, arsenic ion adsorbent is as follows:

[0026] Extract peony essential oil from fresh peony flowers by traditional pressing method to obtain peony flower dregs,

[0027] Soak peony flower dregs in 50% ethanol solution for 12 hours, then wash with water to remove residual ethanol on the surface of peony flower dregs, and drain, then place peony flower dregs in an oven at 80°C to dry until the peony flower dregs The water conten...

Embodiment 2

[0038] In this example, fresh peony flowers were used as raw materials, and other chemical reagents were of analytical grade.

[0039] This embodiment provides an adsorbent for iron, cadmium, and arsenic ions and a preparation method thereof, wherein, the adsorbent is prepared from peony flower dregs after chemical modification and solidification, has good stability, and is resistant to iron, cadmium, and arsenic ions. It has the characteristics of strong adsorption capacity of cadmium and arsenic ions.

[0040] The preparation method of described iron, cadmium, arsenic ion adsorbent is as follows:

[0041] Extract peony essential oil from fresh peony flowers by water extraction. After extraction, peony essential oil and peony flower dregs are obtained. Soak peony flower dregs in 60-75% ethanol aqueous solution for 10-48 hours, and then wash with clean water. Removing the residual ethanol on the surface of peony flower dregs, draining, and then placing the peony flower dregs ...

Embodiment 3

[0044] This embodiment provides an adsorbent for iron, cadmium and arsenic ions prepared from peony flower residue, and the raw material is peony flower residue after extraction of essential oil. The preparation method of described iron, cadmium, arsenic ion adsorbent is as follows:

[0045] Soak peony flower dregs in 60-75% ethanol aqueous solution for 10-48 hours, then wash with clean water to remove residual ethanol on the surface of peony flower dregs, and drain, then place peony flower dregs in an oven at 60-90°C Drying in medium temperature until the water content of peony flower residue is less than 12%, and pulverizing to obtain dried peony flower residue powder.

[0046] Put 80g of dried peony flower dregs powder in 1L, 3mol / L aqueous acetic acid solution, add 50g of bisphenol A, and stir magnetically to obtain a mixed solution containing peony flower dregs powder, which is then oxidized with 7.5mol / L of hydroxide Sodium solution to adjust the pH of the solution to 8, ...

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Abstract

The invention provides an iron, cadmium and arsenic ion adsorbent prepared after peony flower residues are modified with epoxy chloropropane components as well as a preparation method of the adsorbent and belongs to the technical field of adsorbents for metal ions in water. The preparation method comprises the steps as follows: peony flower residues are soaked in an ethanol aqueous solution, dried and crushed, and dried peony flower residue powder is obtained; the dried peony flower residue powder is placed in an acetic acid aqueous solution, bisphenol A is added, magnetic stirring is performed, and the pH of the mixed solution of the peony flower residue powder is adjusted to range from 10 to 12; epoxy chloropropane is added, constant-temperature oscillation reaction is performed at 30-50 DEG C, the product is filtered, washed to be neutral and dried, and the adsorbent for the iron, cadmium and arsenic ions is obtained. The preparation method of the adsorbent for iron, cadmium and arsenic ions is simple, the preparation cost is low, and the adsorbent is convenient to use and good in adsorption effect, does not introduce new pollutants and has bright market prospects.

Description

technical field [0001] The invention relates to the technical field of adsorbents for metal ions in water, in particular to an adsorbent for iron, cadmium and arsenic ions and a preparation method thereof. Background technique [0002] Water is the source of human life, and it is an indispensable and important factor in the process of the survival and development of nature and human beings. With the rapid development of the global economy, the human demand for water resources is increasing, but at the same time the pollution of water resources is also becoming more and more serious. Metal ion pollution accounts for a considerable proportion of water pollution. Heavy metal pollution is easy to accumulate and expand in the biological chain, and is highly toxic. Therefore, excessive metal ions in water and the problems caused by them have seriously endangered the ecological environment and human life and health. Among these metal ion pollution, the common ones are: lead, merc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J2220/485C02F1/286C02F2101/20
Inventor 张校玮王晔
Owner 河北省廊坊水文水资源勘测局
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