Method for synthesizing beta-cyclodextrin conjugated biochar by microwave-assisted one-pot method and application thereof
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A β-cyclodextrin and microwave-assisted technology, which is applied in chemical instruments and methods, water pollutants, and other chemical processes, can solve problems such as limited research, achieve rapid preparation processes, and promote development and application.
Active Publication Date: 2020-04-14
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology
However, studies on the use of microwave-assisted modification of raw biochar to remove heavy metal ions and estrogenic pollutants are limited
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specific Embodiment approach 1
[0018] Specific implementation mode 1: The microwave-assisted one-pot synthesis method of β-cyclodextrin-conjugated biochar in this implementation mode is completed according to the following steps:
[0019] 1. Put the rice husk powder in the sulfuric acid solution, mix it evenly and let it stand for 10h-12h, rinse it with distilled water until neutral, and then dry it to obtain the dried rice husk powder. The ratio of the mass to the volume of the sulfuric acid solution is (0.8g-1.2g): (2mL-4mL); the dried rice husk powder is heated to 290°C-310°C at a heating rate of 10°C / min under a nitrogen atmosphere. ℃, and pyrolyze at 290℃~310℃ for 110min~130min to obtain rice husk biochar;
[0020] 2. Add sodium hydroxide powder and β-cyclodextrin to distilled water, mix thoroughly, then add rice husk biochar and glutaraldehyde, mix well, place in a microwave reactor, and use a microwave power of 340W to 360W Stirring reaction 10min~15min, obtain β cyclodextrin conjugated biochar; The...
specific Embodiment approach 2
[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the rice husk powder described in step 1 is prepared according to the following steps: first, the rice husk is washed with distilled water for 3 to 5 times, and then heated at 60° C. to 80° C. Dry at ℃, grind after drying, and pass through a 100-mesh sieve to obtain rice husk powder.
[0024] Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0025] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the concentration of the sulfuric acid solution described in step one is 18.4mol / L, and the H in the sulfuric acid solution 2 SO 4 The quality score is 98%.
[0026] Other steps are the same as those in Embodiment 1 or 2.
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Abstract
The invention discloses a method for synthesizing beta-cyclodextrin conjugated charcoal by a microwave-assisted one-pot method and an application thereof, and relates to a method for synthesizing beta-cyclodextrin conjugated charcoal by a microwave-assisted one-pot method and an application thereof. The invention provides a method for synthesizing beta-cyclodextrin conjugated biochar by a microwave-assisted one-pot method and an application thereof, and the beta-cyclodextrin conjugated biochar is synthesized by the microwave-assisted one-pot method and is used for simultaneously adsorbing BPAand Pb (II) in industrial wastewater. The method comprises the following steps: putting rice hull powder into a sulfuric acid solution, uniformly mixing, standing, washing the mixture by distilled water until the mixture becomes neutral, drying the mxiture to obtain dried rice hull powder; heating and pyrolyzing the dried rice hull powder to obtain rice hull biochar; adding sodium hydroxide powderand beta-cyclodextrin into distilled water, adding the rice husk biochar and glutaraldehyde, uniformly mixing, putting the solution in a microwave reactor, and carrying out reactions under stirring to obtain the beta-cyclodextrin conjugated biochar. The method for synthesizing the beta-cyclodextrin conjugated charcoal by the microwave-assisted one-pot method and the application thereof can be obtained.
Description
technical field [0001] The invention relates to a microwave-assisted one-pot method for synthesizing β-cyclodextrin conjugated biochar and its application. Background technique [0002] Nowadays, the application of metal materials and estrogen is increasingly widespread, resulting in the discharge of a large amount of heavy metal ions and estrogen pollutants into wastewater, which is harmful to human health and ecological safety, so it has received more and more attention. Bisphenol A [2,2-bis(4-hydroxyphenyl)propane, BPA] is a common environmental estrogen and is widely used as an important monomer in the production of polycarbonate, even at low Levels can also cause adverse health effects such as reproductive failure and early puberty. As an estrogen-like metal pollutant, lead is extremely toxic and harmful, and can cause various diseases such as anemia, renal dysfunction, and permanent brain damage. In recent years, researchers have successively proposed some methods to...
Claims
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