|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 竹制活性炭处理酸性染料废水吸附等温线模型的误差分析(英文)显示文摘High surface area activated carbons were produced by thermal activation of waste bamboo scaffolding with phosphoric acid.Single component equilibrium dye adsorption was conducted on the carbons produced and compared with a commercially available carbon.Two acid dyes with different molecular sizes,namely Acid Yellow 117(AY117) and Acid Blue 25(AB25),were used to evaluate the adsorption capacity of the produced carbons.It was found that the dye with smaller molecular size,AB 25,was readily adsorbed onto the produced carbon,nearly three times higher than a commercially available carbon,while the larger size dye,AY117,showed little adsorption.The experimental data were analyzed using isotherm equations including Langmuir,Freundlich,Tempkin,Toth,Redlich-Peterson and Sips equations.The equilibrium data were then analyzed using five different non-linear error analysis methods. | L.S.Chan W.H.Cheung S.J.Allen G.McKay | 2012 | Chinese Journal of Chemical Engineering2012，20，3： | 2 |
| 2 | Population-Based and Personalized Design of Total Knee Replacement Prosthesis for Additive Manufacturing Based on Chinese Anthropometric Data显示文摘At present,most total knee replacement(TKR)prostheses on the market are designed according to the sizes of Caucasians.However,extensive studies have indicated that human anatomies differ among different ethnicities.A number of reports have indicated that Chinese TKR patients do not match with available prostheses.In this study,computed tomography(CT)images of 52 knees of Chinese men and women were used for anthropometric measurements.Index and geometric measurements were definedand used for correlation analysis.Key parameters from the measurement results were identified.Detailed geometries of knees were measured as coordinates.A deformable three-dimensional(3D)knee modelbased on anatomical coordinates correlating with the identified key parameters was generated.A pros-thesis was then designed according to the analyzed results.Surface matching analysis,bone resectionanalysis,and cadaveric trials were conducted and compared with commercial products to validate theproposed design.The femoral component designed by this study resulted in the highest accuracy(rootmean square point-to-surface(RMS PS),(1.08±0.20)mm)and lowest amount of resected bone volume(27412mm^(3))in comparison with two commercial knee prostheses.This study suggests a new approachfor population-based patient-specific femoral prosthesis design With a single,easilty acquired dimen-sion-namely,epicondyle width(ECW)-as input,a patient-specific femoral prosthesis can be designed according to the analyzed measured data and manufactured by additive manufacturing(AM)methods.Meanwhile,the reconstructed femoral condylar surface was compared with the femoral condylar surfacein the original CT scanning data The average RMS PS distance of the reconstructed femoral condylar surface among all data was(1.10±0.18)mm,which is comparable to other statistical shape modeling methods using multiple radiographs as input data.There is a need to develop an anthropometric-based knee prosthesis for the Chinese population.Based on the anthropometry of the Chinese population,our new design fits Chinese patients better and reserves more bone volume compared with current commercial prostheses,which is an essential step toward AM for personalized knee prostheses. | C.S.Chui K.S.Leung J.Qin D.Shi P.Augat R.M.Y.Wong S.K.H.Chow X.Y.Huang C.Y.Chen Y.X.Lai P.S.H.Yung L.Qin W.H.Cheung | 2021 | Engineering2021，7，3： | 1 |
| 3 | 废轮胎二氧化碳活化借助析因设计的系统分析(英文)显示文摘In this study,waste tire was used as raw material for the production of activated carbons through pyrolysis.Tire char was first produced by carbonization at 550℃ under nitrogen.A two factorial design was used to optimize the production of activated carbon from tire char.The effects of several factors controlling the activation process,such as temperature(850-950 ℃),time(2-6 h) and percentage of carbon dioxide(70%-100%) were investigated.The production was described mathematically as a function of these three factors.First order modeling equations were developed for surface area,yield and mesopore volume.It was concluded that the yield,BET surface area and mesopore volume of activated carbon were most sensitive to activation temperature and time while percentage of carbon dioxide in the activation gas was a less significant factor. | P.P.M.Fung W.H.Cheung G.McKay | 2012 | Chinese Journal of Chemical Engineering2012，20，3： | 0 |
| 4 | 由竹脚手架制备的活性炭经化学修饰后的表征(英文)显示文摘In this study,bamboo scaffolding was used to produce activated carbon by carbonization at 600 ℃ and 900 ℃ with the purge of nitrogen.The 600 ℃ char was then further modified chemically by acids and alkalis by reflux for 6 hours.The produced chars were then characterized by nitrogen adsorption isotherm,He pyncometry,pH,elemental analysis and Boehm titration.For most of the chemically modified carbons,the micropore surface areas and volumes have increased compared with the 600 ℃ char,while the mesopore surface areas and volumes slightly decreased,which may have been due to the dissolving of some of the permeated inorganic matter and oxidizing deposited carbon that blocks the pore openings.For the acidic modified carbons,larger amounts of acidic groups were present in the carbons after being activated by phosphoric acid,phosphoric acid further treated with 2 mol·L-1 nitric acid,and calcium hydroxide.Although carbon treated with 2 mol·L-1 and 5 mol·L-1 nitric acid also produced high acidity,the surface areas and pore volumes were relatively low,due to the destruction of pores by nitric acid oxidation.The reduction of porosity may impair the adsorption capacity. | W.H.Cheung S.S.Y.Lau S.Y.Leung A.W.M.Ip G.McKay | 2012 | Chinese Journal of Chemical Engineering2012，20，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员