Preparation method of hydroxyl-ferric oxide/graphene oxide composite material and application of hydroxyl-ferric oxide/graphene oxide composite material

Abstract

The invention relates to a preparation method of a hydroxyl-ferric oxide / graphene oxide composite material and application of the hydroxyl-ferric oxide / graphene oxide composite material. The hydroxyl-ferric oxide / graphene oxide composite material is formed by mixing a turbid liquid of graphene oxide and a turbid liquid of hydroxyl-ferric oxide according to the volume ratio of 1: (1-2), dispersing, and compounding by a hydrothermal method. The prepared hydroxyl-ferric oxide / graphene oxide composite material is used for treating phenol-containing wastewater; 0.5 to 5 g of the hydroxyl-ferric oxide / graphene oxide composite adsorption material is fed into 1,000 ml of the wastewater with the chlorophenol concentration of 10 to 60 mg / l, and then fully oscillated on a constant-temperature shaking table, the water temperature is controlled to be at 25 DEG C, and after reaction is conducted for 3 h, the wastewater is filtered. Detection shows that the chlorophenol removal rate is 87 to 93.2 percent, the chlorophenol concentration of discharged water is 1.3 to 5.2 mg / l, and the adsorption amount is 11 to 17.4 mg / l.

Description

technical field [0001] The invention relates to the technical field of water pollution control, in particular to a preparation method of an iron oxyhydroxide / graphene oxide composite material and its application in water treatment. Background technique [0002] With the rapid development of the chemical industry, organochlorine compounds have been widely used in the fields of medicine, agricultural supplies, textiles, daily chemicals, and public health, but they have also caused serious environmental pollution. Many organochlorine compounds are highly toxic, difficult to biodegrade, have a long half-life, have "three effects" and genotoxicity, and the long-term residue of these organochlorine compounds in the environment will affect the environment and endanger the health of various organisms and human beings. [0003] Chlorophenol aromatic compounds are a type of typical organochlorine compounds, which can cause poisonous effects on various organisms after entering the envi...

AI Technical Summary

Problems solved by technology

Chemical oxidation uses a strong oxidizing agent such as O 3 , Fenton reagent, etc. for oxidation treatment, the treatment effect of phenol-containing wastewater is obvious, but the oxidant cost is high and the technical equipment requirements are high; the photocatalytic oxidation method oxidizes chlorophenol by catalyzing the generation of hydroxyl radicals. Although this method has good treatment effect and short reaction time, However, in some treatment processes, more toxic intermediate products may be produced, making it difficult to apply chemical methods to treat chlorinated phenols; the membrane separation method is to filter and treat phenol-containing wastewater through synthetic membranes, but the membranes are prone to failure after long-term operation. If it is clogged, the permeation of the membrane will decrease, and the membrane modules will need to be replaced frequently, resulting in high operating costs. These problems make the membrane separation technology have certain limitations in practical application; although the biological method of treating phenolic wastewater is low in cost and has no secondary pollution, but the biological system has low treatment efficiency and poor operation stability, which limits the application of biological methods to treat phenolic wastewater