Preparation method of biomass water treatment environment functional material

Abstract

The invention discloses a preparation method of a biomass water treatment environment functional material, and belongs to the technical field of water treatment materials. The preparation method comprises the following steps: crushing a biomass material, dipping the crushed biomass material in a mixed solution formed by mixing an iron salt solution and a zirconium salt solution, carrying out ultrasonic treatment, and completely impregnating and filtering the mixture to obtain a pretreated biomass material; adding a NaOH solution into the pretreated biomass material, wherein the adding amount of the NaOH solution is 3-4 times the volume of the pretreated biomass material, performing vibration once every 10-20 min, soaking the material for 60-120 min, carrying out centrifuging, cleaning anddrying treatment until the water content is controlled to be 8%-15%; and S3, compressing the material dried in the step S2 into spheres with the density of 0.8-1.5 g / cm3, putting the spheres into a high-temperature carbonization furnace, introducing argon for protection, heating the material to 450-800 DEG C at the speed of 5-10 DEG C / min, carrying out heat preservation carbonization for 2-3 hours, and naturally cooling the product to room temperature to obtain the spherical biomass-based magnetic activated carbon. The preparation method is simple in process and low in energy consumption, andthe prepared charcoal-based magnetic activator has good recoverability and stability.

Description

technical field [0001] The invention relates to the technical field of water treatment materials, in particular to a preparation method of biomass water treatment environmental functional materials. Background technique [0002] Biomass refers to various organisms produced through photosynthesis using the atmosphere, water, land, etc., that is, all living organic substances that can grow are collectively referred to as biomass. It includes plants, animals and microorganisms. Biomass is a renewable resource with a huge amount and a wide variety. The common ones are woody and herbaceous plants, such as agricultural processing residues, forestry processing residues, aquatic plants, energy plants, etc. Most biomass is rich in carbon elements , is a cheap raw material for the preparation of various carbon materials. [0003] Biomass is pyrolyzed at high temperature under anoxic conditions to form biochar, which has good adsorption and catalytic properties. Biomass activated car...

AI Technical Summary

Problems solved by technology

[0005] At present, the magnetic modification of biomass activated carbon is mainly through compounding magnetic particles and magnetic fluids with activated carbon, but the distribution of magnetic particles in activated carbon is not uniform, and the problem of low mechanical strength of biomass activated carbon itself, in the process of water flow , the carbon wear rate is high, and the tiny carbon debris will be suspended in the treated water body with the fluid through the filter device, causing secondary pollution. The detached debris is often not loaded with magnetic particles, so it cannot be recovered by applying a magnetic field.