Preparation method of homogeneous Fenton catalyst of bamboo charcoal modified with iron oxide

Abstract

The invention relates to a preparation method of a homogeneous Fenton catalyst of bamboo charcoal modified with an iron oxide. The preparation method comprises the process steps of: 1) filtering bamboo charcoal with a screen; 2) putting the soaked bamboo charcoal in an oven; 3) soaking the dried bamboo charcoal by adopting a 0.5-2mol / LFeCl3 solution; 4) steaming the bamboo charcoal till the bamboo charcoal is dried; 5) calcining the dried bamboo charcoal into a muffle furnace; 6) cooling the calcined bamboo charcoal, taking the cooled bamboo charcoal out, adding a 0.5-2mol / L FeCl3 solution into the cooled bamboo charcoal, and steaming the bamboo charcoal till the bamboo charcoal is dried; and 7) stoving the dried bamboo charcoal, wetting and cooling the bamboo charcoal in the air. The preparation method has the advantages that iron ions are firmly loaded on the bamboo charcoal by utilizing a repeated boiling process, and the absorption performance of the bamboo charcoal and the strong oxidizing property of a Fenton reaction are sufficiently exerted in the waste water treatment process. The scope of the pH value is enlarged, the generation of secondary pollution is avoided, and the removal ratio of the pollutants, such as phenol in the waste water reaches more than 95%. The preparation method has the advantages of simplicity in operation, environmental friendliness, low cost, and cyclic utilization.

Description

technical field [0001] The invention relates to a preparation method of iron-loaded bamboo charcoal heterogeneous Fenton catalyst. Background technique [0002] The problem of water pollution is becoming more and more serious, especially in the chemical industry and other industries, which contains a large amount of refractory organic matter, and it is difficult to meet the standard for conventional biochemical treatment. At present, advanced oxidation technology is widely used in the treatment of refractory wastewater. Among them, Fenton and photo-Fenton technologies have the characteristics of high treatment efficiency, relatively low cost, and easy industrialization, and have gradually become one of the main methods in advanced oxidation technology. one. However, for the ordinary homogeneous Fenton system, because it can only be carried out effectively at a low pH, it is necessary to repeatedly adjust the pH value of the wastewater, which increases the treatment cost, an...

AI Technical Summary

Problems solved by technology

However, for the ordinary homogeneous Fenton system, because it can only be carried out effectively at a low pH, it is necessary to repeatedly adjust the pH value of the wastewater, which increases the treatment cost, and the catalyst of the homogeneous Fenton system is miscible in wastewater In the process, a large amount of iron-containing sludge will be produced after the reaction, and the post-treatment is complicated, resulting in secondary pollution

There is a lack of a technology that can firmly load iron ions on the carrier and prepare a heterogeneous catalyst so that it does not produce secondary pollution

Images