利用当地原料生产纳米碳

Q3 Environmental Science
Kholmirzaeva Khilola, Fayzullayev Normurot Ibodullayevich, Normurodov Otajon Uktamovich, Haydarov Gayrat Shoyimovich
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引用次数: 0

摘要

本研究旨在通过对纳米碳特性的详细研究,从当地的原材料中提取纳米碳。该研究包括研究果仁(杏)和核桃仁的热特性,确定每种原料的最佳碳化过程模式,开发一种通过液体造粒合成球形颗粒的方法,并确定造粒时使用的硫酸溶液的最佳浓度。对石油产品动态吸附结果的分析表明,使用在400°C下获得的吸附剂30分钟可达到最大的吸附效果。对从不同碳含量的核桃壳中获得吸附剂的温度进行了优化。它们表面的疏水性和亲油性是所有这些材料所共有的。研究了吸附剂吸附容量过程的动态条件。测定了吸附剂的吸附效率和比容量。研究表明,所研究的吸附剂可以通过重复纯化来重复工艺循环。当使用活性炭净化石油产品的水时,用胶体和精细分散的混合物浸出的过程中,发现脱氧是必要的。醚组分OV-1为固定液相,连接Finuigan 4023全自动GC/MS系统质谱仪,在长40 m,内径0.25 mm的毛细管柱上进行色谱质谱测定。对杏皮、核桃皮和核桃皮样品进行了红外光谱分析,结果表明,杏皮、核桃皮和核桃皮均存在2920和2851 cm−1的对称谱带,这些谱带属于甲基和亚甲基c - h价振荡。在杏皮样品的光谱中,观察到纤维素的吸收带(1377 cm−1和1069 cm−1)。热重研究在STA 449C木星同步热分析仪器上进行,在25-1000°C的温度范围内,以10°C/min的升温速率在惰性环境中进行。采用高速气体吸附分析仪NOVA-1200e,采用成像氮气吸附等温线法在77K温度下对碳吸附剂的孔隙结构参数进行了分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Production of Nanocarbon from Local Raw Materials
This research aims at extraction of nanocarbon from local raw materials through a detailed study of its characteristics. The research involves study of thermal properties of fruit kernels (apricots) and walnut kernels, determining the optimal modes of the carbonization process for each type of raw material, developing a method for the synthesis of spherical granules by liquid granulation and determining the optimum concentration of the sulfuric acid solution used in granulation. Analysis of the results on the dynamic sorption of petroleum products showed that maximum sorption is achieved when using a sorbent obtained at 400∘C for 30 minutes. Temperature regimes have been optimized for obtaining sorbent from walnut shells with different carbon content. The hydrophobicity and oleophilic of their surface are common to all these materials. The dynamic conditions of the adsorption capacity processes under the sorbents were studied. Sorption efficiency and the specific capacity of sorbents were determined. It has been shown that the technological cycle of the studied sorbents can be repeated by repeated purification. When activated charcoal is used to purify water from petroleum products, the process of leaching with colloidal and finely dispersed mixtures – it was found that deaeration is necessary. The individual composition of the ether fraction OV-1 has a fixed liquid phase, Connected to Finuigan 4023 Automated GC/MS System mass spectrometer, It was determined by chromato-mass spectrometry in a capillary column 40 m long and 0.25 mm in internal diameter. The results of the Fure-IR spectroscopy study of samples based on the apricot peel, walnut peel, and walnut peel showed that winning symmetrical bands (2920 and 2851 cm−1) were observed in them, these bands belong to the C-H-valence oscillation belonging to the methyl and methylene groups. In the spectrum taken from a sample of apricot peel, absorption bands belonging to cellulose (1377 cm−1 and 1069 cm−1 ) were observed. Thermogravimetric studies were performed on an STA 449C Jupiter synchronous thermal analysis instrument in the inert environment at a heating rate of 10∘ C/min in the temperature range of 25–1000∘C. Analysis of the porous structure parameters of carbon sorbents were carried out using the high-speed analyzer of gas sorption NOVA-1200e by the method of imaging nitrogen adsorption isotherms at a temperature of 77K.
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来源期刊
Strategic Planning for Energy and the Environment
Strategic Planning for Energy and the Environment Environmental Science-Environmental Science (all)
CiteScore
1.50
自引率
0.00%
发文量
25
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