Wastewater treatment material, preparation method and application
A waste water treatment and waste water technology, which is applied in the direction of adsorption water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems such as the decline of adsorption saturation effect and the difficult treatment of analytical waste liquid, so as to improve the adsorption capacity. ability, rich specific surface area, and environmental friendliness
Inactive Publication Date: 2019-04-19
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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Problems solved by technology
Adsorption treatment of heavy metal wastewater has the advantages of low cost, simple operation, and high removal rate, and has become the focus of water treatment research. However, it also has disadvantages in the treatment of heavy metal wastewater such as hexavalent chromium. For example, the adsorption saturation effect will decrease. If resin adsorption is used, After the adsorption is saturated, analysis is required, and the analysis waste is difficult to deal with, etc.
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Embodiment 1
[0023] A preparation method of waste water treatment material: Weigh 30g of melamine in a crucible, add distilled water to make it submerge the medicine, after standing for stratification, pour off the supernatant liquid, add absolute ethanol to submerge the medicine, let stand, wait for the After layering, pour off the supernatant, put the crucible into the muffle furnace, open the lid, heat at 70°C for 40 minutes, cover the lid, then heat at 500°C for 3h, cool to room temperature, grind and sieve, That is, graphite phase carbon nitride nanoparticles are obtained.
[0024] Put the mulberry leaf powder in a corundum crucible, put it into a tube furnace, feed nitrogen, raise the temperature to 400°C at a rate of 7°C per minute, keep the temperature for 2 hours, cool, crush and sieve to get the mulberry tree. biochar nanoparticles.
[0025] Dissolving 2.5g chitosan in 100mL of 1% acetic acid solution by volume is used to prepare the chitosan solution. At room temperature, the b...
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Abstract
A wastewater treatment material comprises biochar nanoparticles made of paper mulberry, graphite-phase carbon nitride nanoparticles and chitosan, wherein the biochar nanoparticles made of the paper mulberry and the graphite-phase carbon nitride nanoparticles are loaded on the chitosan to form gel pellets; the weight ratio of the biochar nanoparticles made of the paper mulberry to the graphite-phase carbon nitride nanoparticles is 1:10-8:1. In the wastewater treatment material, the gel pellets formed after the biochar nanoparticles made of the paper mulberry and the graphite-phase carbon nitride nanoparticles are loaded on the chitosan have a large specific surface area and many adsorption sites, thereby having a high adsorption efficiency on hexavalent chromium ions in water; besides, thegel pellets can be easily separated from a treated solution.
Description
technical field [0001] The invention relates to a low-cost, large specific surface area, high-efficiency and easy-to-separate waste water treatment material that can be used for adsorption treatment of hexavalent chromium ions, a preparation method and application. Background technique [0002] Water is the source of life. Clean and excellent water quality is the guarantee of human health. However, due to human activities, a large number of pollutants are discharged into water bodies, causing environmental problems such as water pollution and water quality degradation. Among them, heavy metal pollution is the most harmful water pollution. question. Heavy metals include copper, zinc, arsenic, mercury, cadmium, chromium (hexavalent), seven kinds of lead, and metalloids. They cannot be biodegraded, but instead can accumulate under the action of biomagnification in the food chain and cause chronic diseases to the human body. poisoned. In order to control the harm of heavy meta...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/22
CPCB01J20/0259B01J20/20B01J20/24C02F1/28C02F2101/22
Inventor 胡新将许悦赵运林胡熙王慧邱国强谢广玉韩诗婷霍惠雯
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY