Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for degrading dye wastewater with nanometer TiO2 photocatalyst

A dye wastewater and photocatalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, textile industry wastewater treatment, etc., to achieve the effects of increasing electron concentration, prolonging life, and simple operation

Active Publication Date: 2018-07-20
绍兴上虞新龙家印染有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, TiO has been prepared by potassium tetratitanate whiskers 2 research, but this technique is the interlayer K + ions from H + Completely exchanged and then roasted to obtain nano-TiO 2 , does not involve part of K + Ion exchange, and the use of different metal ion exchange to obtain nano-TiO co-doped with K and metal 2 , and use it for photocatalytic degradation of organic pollutants in water and related degradation processes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for degrading dye wastewater with nanometer TiO2 photocatalyst
  • Process for degrading dye wastewater with nanometer TiO2 photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation of potassium titanate whiskers: metatitanic acid and K 2 CO 3 Mix evenly at a molar ratio of 3:1, add an appropriate amount of water to it and stir evenly to form a non-flowing slurry, in which the mass ratio of water to the mixed material is 5:1, and place the slurry in an oven for 10 hours at 105°C , then raise the temperature to 970°C at a rate of 5°C / min in the muffle furnace under an air or oxygen atmosphere, and keep it for 5 hours, then cool it down to 940°C for 3 hours, keep it for 4 hours, then cool down with the furnace, and take it out. The sintered sample is pulverized and passed through a 100-mesh sieve, and the sieved sample is collected;

[0027] 2. Ion exchange:

[0028] a): Take a cleaned 1L flask, add 400g of dilute HCl solution with a mass concentration of 5wt% to it, and add 7g of the sample collected in step 1 to it, ion-exchange for 15min in a constant temperature water bath at 60°C, filter, and deionized water Wash until the filt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a treatment process for degrading dye wastewater by photocatalysis. An adopted visible photocatalyst is a K and Ce co-doped TiO2 photocatalyst, wherein the catalyst is preparedby the following steps: firstly, preparing a part of K-doped potassium titanate by ion exchanging; and then, and further performing hydrothermal ion exchanging to prepare the Ce and K co-doped TiO2 photocatalyst. The process provided by the invention solves a problem of low dye wastewater degrading efficiency in the prior art and is suitable for degrading organic dyes in polluted water bodies.

Description

technical field [0001] The invention relates to a treatment process for photocatalytic degradation of dye wastewater, which uses K and Ce co-doped TiO 2 Photocatalyst, this treatment process has the advantages of simple operation, low cost, and high degradation efficiency. Background technique [0002] In the process of textile printing and dyeing, a large number of auxiliaries that pollute the environment and are harmful to the human body are used. Most of these auxiliaries are discharged in the form of liquid, which inevitably enters the water environment and causes water pollution. For example, Rhodamine B dyes are carcinogenic and mutagenic. Wastewater containing Rhodamine B has deep chroma, high content of organic pollutants, and poor biodegradability. It is difficult to treat with conventional methods such as physical adsorption and Fenton methods, resulting in pollution. The long-term deterioration of water quality will seriously endanger the water environment and hu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B01J23/10C02F101/30C02F101/34C02F101/38C02F103/30
CPCC02F1/30B01J23/10C02F2305/10C02F2103/30C02F2101/38C02F2101/34C02F2101/308B01J35/39
Inventor 不公告发明人
Owner 绍兴上虞新龙家印染有限公司