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A composite acid dye adsorbent and its preparation method and application

A technology of acid dyes and adsorbents, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., can solve the problems of low adsorption efficiency, achieve high adsorption efficiency, less waste discharge, and strong regeneration Effect

Active Publication Date: 2020-03-20
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an environmentally friendly, low-cost, high adsorption efficiency acid dye adsorbent and its preparation method and application, to solve the problem of low adsorption efficiency of the existing acid dye adsorbent

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  • A composite acid dye adsorbent and its preparation method and application
  • A composite acid dye adsorbent and its preparation method and application
  • A composite acid dye adsorbent and its preparation method and application

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Embodiment 1

[0039] In this embodiment, 6.9g Mg(NO 3 ) 2 ·6H 2 O and 5g Al(NO 3 ) 3 9H 2 O was added to 13.5ml ultrapure water to form solution A; 0.75g mesoporous silicon and 2.54g Na 2 CO 3 Add to 9ml ultrapure water to make suspension B; add 3.84g KOH to 10ml ultrapure water to make solution C. Add solution A and solution C dropwise to suspension B alternately, keep stirring, and control the pH at 10‐12 until the addition is complete. The suspension was stirred on a stirrer heated by a constant temperature oil bath at 60°C, and aged for 12 hours. The aged suspension was centrifuged and washed until the pH was 7. The washed solid was dried in a drying oven at a drying temperature of 100° C. and a drying time of 24 hours. The dried solid powder is placed in a high-temperature furnace and calcined at 450° C. for 4 hours, and the mesoporous silicon / magnesium-aluminum double-hydroxy compound metal oxide with a mass ratio of mesoporous silicon of 20 wt % can be synthesized. Finally,...

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Abstract

The invention belongs to the field of environmental protection technology, and specifically relates to a new type of composite acid dye adsorbent and its preparation and application, which is used to efficiently remove acid dyes in sewage. The composite acid dye adsorbent is a double hydroxyl composite metal oxide composite material, which is used as a composite acid dye adsorbent in purifying wastewater containing acid dyes. The adsorbent of the present invention has the characteristics of environmental friendliness, low cost, and high adsorption efficiency. Based on the structural characteristics of the double hydroxyl composite metal oxide, the porous material is prepared by in-situ compounding with the porous material. In the process of acid dye adsorption treatment, it uses less amount and produces less waste emissions. Moreover, the composite material can greatly improve the adsorption efficiency without basically losing the adsorption capacity, and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a novel composite acid dye adsorbent and its preparation and application, which are used for efficiently removing acid dyes in sewage. Background technique [0002] Today, with the rapid development of industrialization and informatization, the discharge of various types of sewage, including dye wastewater, is becoming more and more serious, causing great damage to humans and even the entire biosphere. It is imminent to find effective ways to treat wastewater. Dye wastewater mainly comes from desizing, scouring, bleaching, mercerizing, dyeing, printing and other processes in the printing and dyeing process, and its water quality is also affected by raw materials, production varieties, production processes, and management levels. But in general, dye wastewater has the main characteristics of large wastewater volume, deep color, complex water quality an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/08B01J20/06B01J20/30C02F1/28C02F101/30C02F103/30
CPCB01J20/02B01J20/041B01J20/06B01J20/08C02F1/281C02F2101/308C02F2103/30
Inventor 杜涛刘丽影周立峰王义松未艺超张斌房鑫车帅
Owner NORTHEASTERN UNIV LIAONING