A treatment method for bpa-containing sewage and ball-milling modified magnetic biochar composite material

Abstract

The invention discloses a treatment method for BPA-containing sewage, a ball-milling modified magnetic biochar composite material and a preparation method thereof. The treatment method is as follows: A) preparing Fe 3 o 4 @MBC; B) Obtain BPA-containing sewage samples and measure BPA concentration; C) Test the pH value of sewage; D) Add PDS and Fe in different proportions 3 o 4 @MBC, get the best feeding ratio; E) According to the best feeding ratio, Fe 3 o 4 @MBC is added to the sewage containing BPA, which catalyzes PDS, and the two jointly complete the degradation and removal of BPA in the water. The invention also discloses a ball-milled modified magnetic biochar composite material, which is obtained by loading Fe on the surface of the ball-milled biochar 3 o 4 Scale-like black solid powder composite material obtained by lamellae. The invention also discloses a preparation method of the material. The material adopted in the invention has a unique load structure, and the sewage treatment effect is good and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and magnetic composite materials, and particularly relates to a treatment method of BPA-containing sewage and a ball-milled modified magnetic biochar composite material. Background technique [0002] Bisphenol A, also known as BPA, is an organic compound with the molecular formula C 15 H 16 O 2 . In industry, bisphenol A is used to synthesize materials such as polycarbonate (PC) and epoxy resin. It has been used since the 1960s in the manufacture of plastic (milk) bottles, sippy cups for young children, and the inner coating of food and beverage (milk powder) cans. [0003] Bisphenol A is one of the most widely used industrial compounds in the world, mainly used in the production of polycarbonate, epoxy resin, polysulfone resin, polyphenylene ether resin, unsaturated polyester resin and other polymer materials. It can also be used to produce plasticizers, flame retardants, antioxidan...

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Problems solved by technology

[0010] However, the above-mentioned patented technical solution also has the following deficiencies: one is that the above-mentioned patent uses cation exchange resin as the raw material for preparing carbon-based materials, and the cost is higher; the other is that the environmental conditions are limited, and the removal effect of pollutants is affected by pH The impact is obvious. In the process of removing pollutants, the pH value range it adapts to is narrow, and the pH value of wastewater usually needs to be adjusted, and the process is complicated. The difficulty and cost of preparing materials, on the other hand, the doped cobalt element was listed as a 2B carcinogen by the International Agency for Research on Cancer of the World Health Organization in 2017, which has ecological health and safety risks, and is expensive; Low catalytic stability when stored for a long time

[0011] In addition, at present, the modification of porous carbon materials includes acid / alkali modification and chemical oxidation. Because the surface of the ball-milling modified material prepared by the mechanical ball milling method is greatly broken and the production process is complicated, the mechanical ball milling modification is not used. method

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