http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Huihui Xiong (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Variable Research on Engineering Characteristics of Soybean Urease Reinforced Sand
Meng Cui,Huihui Xiong,Jun-jie Zheng,Suying Lv,Mingjuan Cui,Xiao Fu,Shangyu Han 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.8
In this study, based on soybean urease and standard sand, the unconfined compressive strength test and permeability test of four variables of urease concentration, urea concentration, calcium chloride concentration and sodium alginate content under different combinations of values were carried out, and the range analysis and variance analysis of test data were carried out. On this basis, the coupling model of unconfined compressive strength and permeability coefficient of soybean urease reinforced sand was established based on four test variables. It was found that the engineering characteristics of soybean urease reinforced sand were significantly affected by the combination of variable values. The maximum value of unconfined compressive strength under the test combination condition was 6.5 times of the minimum value, and the minimum value of permeability coefficient was only 1/4 of the maximum value. The primary and secondary order of influence variables of unconfined compressive strength was: urea concentration > calcium chloride concentration > urease concentration > sodium alginate content, and the primary and secondary order of influence variables of permeability coefficient was: urea concentration > calcium chloride concentration > sodium alginate content > urease concentration. The influence of urea concentration on unconfined compressive strength and permeability coefficient was obvious, and the influence of the other three variables was not obvious. In addition, it was confirmed that the established coupling model of unconfined compressive strength and permeability coefficient of soybean urease reinforced sand had high correlation coefficient and significant linear regression, which can be used for subsequent research and engineering application.
-
One-pot synthesis of high fructose corn syrup directly from starch with SO42−/USY solid catalyst
Yong Sun,Caixia Xiong,Huihui Chen,Xianhai Zeng,Xing Tang,Tingzhou Lei,Lu Lin 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.7
An efficient process was developed for the conversion of starch directly into high fructose corn syrup (HFCS) by using SO4 2−/USY solid catalyst in water. The SO4 2−/USY catalyst was found to act as a bifunctional catalyst with high activity for both hydrolysis of starch and isomerization of glucose, achieving a one-step preparation path of HFCS from starch. An optimal HFCS yield, containing 58.34% glucose and 27.84% fructose (mass fraction), was obtained at 150 oC for only 1 h.
-
Yujie Hu,Changjun Zou,Tingting Xiong,Huihui Wang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
In this work, a facile one-pot method was used to synthesize the co-modified carbon nanotube adsorbent(CB/MMCNT) of cucurbit[7]uril and Fe3O4. A series of characterizations were utilized to confirm the successfulsynthesis of the adsorbent. VSM and separation experiments demonstrated that the adsorbentexhibited excellent magnetic separation performance and could achieve rapid separation within 30 s. BET results show that the adsorbent has excellent specific surface area (67.438 m2/g). Subsequently, threecationic dyes, namely Methylene blue (MB), Malachite green (MG), and Gentian violet (GV), were utilizedin batch adsorption experiments. A strong adsorption effect on cations is exerted by the adsorbentthrough hydrogen bonds, electrostatic interactions, p-p conjugation effects and hydrophobic interactions. Under the optimal conditions (pH = 6, T = 300 min, C0 = 1000 mg/L), the maximum adsorptioncapacity of CB/MMCNT to MB, MG, and GV was 851.5 mg/g, 720.2 mg/g, and 563.4 mg/g. The adsorptiondata could be well fitted by both the pseudo-second-order kinetic model (R2 > 0.99) and Langmuir isothermmodel (R2 > 0.99). Thermodynamic data indicated that the adsorption process was spontaneousand endothermic. Moreover, the cyclic reuse performance of CB/MMCNT was evaluated through 7 cyclesof recycling experiments, which demonstrated that it maintained a high dye removal rate (MB 84%, MG78%, GV 81%), indicating its excellent reusability. Additionally, CB/MMCNT still maintained its impressivecationic dye removal performance (MB 95.8%, MG 92.7%, GV 92.2%) when tested in practical water environments. Overall, CB/MMCNT is a promising, environmentally friendly, efficient, and sustainable adsorbentfor removing cationic dyes.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
