Journal of the Pakistan Institute of Chemical Engineers最新文献_第3页

Performance investigation of indigenously designed multideck Screen (MDS) 自主设计的多层筛网（MDS）的性能研究

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-10-23 DOI: 10.54693/piche.04925

Ishaq Ahmad, Bilal Ahmad, F. Ahmad, Ali Muhammad

{"title":"Performance investigation of indigenously designed multideck Screen (MDS)","authors":"Ishaq Ahmad, Bilal Ahmad, F. Ahmad, Ali Muhammad","doi":"10.54693/piche.04925","DOIUrl":"https://doi.org/10.54693/piche.04925","url":null,"abstract":"Multideck screen (MDS) has found wide applications in mineral processing industry and their performance can be evaluated on the basis of various parameters. The screen was indigenously designed with three decks of various changeable screens. The efficiency of MDS was evaluated at different parameters through efficiency equation and partition/Tromp curves. The imperfection factor and cut size was also determined. Material feed rate of 1 kg/min, 2 kg/min and 3 kg/min; screen angle of 7°, 10° and 13°; aperture size of 2 mm, 1mm and 0.3 mm in the three decks were taken into account. The results showed that the efficiency of MDS improves with increasing screen angle and aperture size whereas it reduces with increasing feed rate. The cut size value improves with increasing screen angle and aperture size whereas it reduces with increasing feed rate. The imperfect factor value reaches zero with increasing screen angle and aperture size while value of imperfect factor increases with increasing feed rate. The maximum efficiency was found approx. 95% at screen angle of 13°, feed rate of 1 kg/min and aperture size of 2 mm.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47350914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of organic additives and current efficiency on electrodeposition of Nickel from sulfate bath 有机添加剂和电流效率对硫酸盐浴电沉积镍的影响

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-10-13 DOI: 10.54693/piche.04924

Muhammad Sadiq, M. Humayun, A. Naveed, M. Arif, S. Afridi, M. Naeem Khan, M. Asif

引用次数: 0

Synthesis of MnO2 Carbon nanotubes catalyst with enhanced Oxygen Reduction Reaction for Polymer Electrolyte Membrane Fuel Cell 聚合物电解质膜燃料电池用增强氧还原反应合成MnO2碳纳米管催化剂

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-10-07 DOI: 10.54693/piche.04923

Muhammad Sadiq, M. Arif, A. Ullah, A. Naveed, S. Afridi, M. Humayun, M. Naeem Khan, M. Asif

{"title":"Synthesis of MnO2 Carbon nanotubes catalyst with enhanced Oxygen Reduction Reaction for Polymer Electrolyte Membrane Fuel Cell","authors":"Muhammad Sadiq, M. Arif, A. Ullah, A. Naveed, S. Afridi, M. Humayun, M. Naeem Khan, M. Asif","doi":"10.54693/piche.04923","DOIUrl":"https://doi.org/10.54693/piche.04923","url":null,"abstract":"Polymer Electrolyte Membrane Fuel Cell (PEMFC), an electrochemical power generating technology, uses a precious metal Platinum (Pt) catalyst for Oxygen Reduction Reaction (ORR), which is a major hindrance in its commercialization. Using a non-precious group metal (NPGM) instead of Pt will reduces the cost of PEMFCs. Herein MnO2 carbon nanotubes (CNTs) were synthesized by impregnating the transition metal in large surface carbonaceous material CNTs by hydrothermal synthesis techniques. To enhance the catalytic reaction and increase the volumetric current density, the sample was pyrolyzed at 800 0C temperature under nitrogen atmosphere. During pyrolysis, the nitrogen was also doped in the framework of carbonaceous materials. The materials were then treated with acid, removing the unreacted metals and adding oxygen functional group to the CNT framework due to which the activity of the catalyst is amplified. The catalysts have been characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), Catalyst activity has been calculated by Rotating Disc Electrode (RDE) experiment. The resulting materials are stronger in experimental conditions in alkaline environment and have high electro catalytic activity for oxygen reduction reaction (ORR). Linear Sweep Voltammetry (LSV) depicts a current density of - 4.0 mA/cm2 and over potential of -0.3V vs. Standard Calomel Electrode (SCE) in 0.1M KOH electrolyte. Rotating Disk Electrode (RDE) was conducted at 400, 800, 1200, and 1600 rpm. The results of MnO2CNT show a desirable future aspect in fuel cell commercialization.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48498704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of water content on kinetics of Ca(OH)2 and alkyl benzene sulphonic acid neutralization reaction. 水含量对Ca(OH)2与烷基苯磺酸中和反应动力学的影响。

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-10-07 DOI: 10.54693/piche.04922

K. Javed, Mahood Saleem, A. Durrani

{"title":"Impact of water content on kinetics of Ca(OH)2 and alkyl benzene sulphonic acid neutralization reaction.","authors":"K. Javed, Mahood Saleem, A. Durrani","doi":"10.54693/piche.04922","DOIUrl":"https://doi.org/10.54693/piche.04922","url":null,"abstract":"The neutralization reaction of Ca(OH)2 and alkyl benzene sulphonic acid (ABS) is catalyzed by the water which was added about 5 to 10% by weight in start of the reaction. The operational cost for separation of water is high and so the water should be at its minimum level in the reaction system to minimize the operational cost for separation of water.Â Kinetic study was completed at constant temperature 343 K and different initial water content (1.5, 4.4 and 8.7 weight percent) to determine the reaction kinetic parameters and impact of water content on the rate of reaction, conversion and reaction time for complete conversion. Integral method was used for data analysis of experimental data and to determine the rate equation from concentration time profiles. The neutralization reaction of Ca(OH)2 and ABS is the second order autocatalytic reaction and estimated values of rate constant was 0.0081 liter/mol.min at 343 K and initial water content 1.5 weight percent. The highest rate of reaction was 0.024 mol/lit.min at 343 K and 1.5 weight percent of initial water and about 99.5 % conversion was achieved in 220 min. On increasing the initial water content, the rate of reaction also increased, and almost complete conversion was achieved in 160 min and 120 min when initial water content was 4.4 and 8.7 weight percent respectively. The water content in the end of the reaction was 5.02, 7.86 and 12 weight percent determined when the initial water content was 1.5, 4.4 and 8.7 weight percent respectively charged in the start of the reaction. More than 4.4 weight percent of initial water content is not necessary because after that increment in the rate of reaction was not significant.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47264941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural plant additive for enhancing the viscosity of lubricant oil. 提高润滑油粘度的天然植物添加剂。

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-09-15 DOI: 10.54693/piche.04921

A. Saadi, Muna Suhail, L. Saad, I. Hassan, F. Ahmed

{"title":"Natural plant additive for enhancing the viscosity of lubricant oil.","authors":"A. Saadi, Muna Suhail, L. Saad, I. Hassan, F. Ahmed","doi":"10.54693/piche.04921","DOIUrl":"https://doi.org/10.54693/piche.04921","url":null,"abstract":"This study represents to improve the performance of the viscosity of lubricating oil engine behavior against the temperature of the combustion engine oil and to solve problems of facing scientists and industrial purposes like consumption properties of lubricating oil (LO) due to the high temperature inside combustion engine. Extracts natural compounds of frankincense were added to the LO due to frankincense has active physical properties of a heat capacity to a create clear effect on improving the durability of viscosity index was investigated using four general, grades of oil to evaluate viscosity changes against combustion temperature. Numerical technique was used to evaluate the efficiency of four grades and compare it with the optimum reference sample. The obtained results of efficiency were increased approximately 46.16 %. Derived mathematical model depending on three types of heat transfer like heat transfer convection from solid to LO, heat transfer convection from LO to the frankincense and heat transfer from LO to the liquid phase of frankincense to estimate the change of an oil's viscosity against temperature. As well, proposed mathematical model considers the effect of frankincense on the action of LO with and without frankincense.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70884983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study of coal washability using float and sink test 浮沉试验研究煤的可选性

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-07-12 DOI: 10.54693/piche.04918

M. Imran, N. Ali, H. Masood, Muhammad Ashraf, Waqar Ali

引用次数: 0

Microstructural and mechanical properties of Al2O3 reinforced Al7010 matrix composites, fabricated by stir casting 搅拌铸造Al2O3增强Al7010基复合材料的组织与力学性能

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-06-16 DOI: 10.54693/piche.04917

A. Farooq, Fauzia Wahid, M. Hafeez, T. Anum

{"title":"Microstructural and mechanical properties of Al2O3 reinforced Al7010 matrix composites, fabricated by stir casting","authors":"A. Farooq, Fauzia Wahid, M. Hafeez, T. Anum","doi":"10.54693/piche.04917","DOIUrl":"https://doi.org/10.54693/piche.04917","url":null,"abstract":"The microstructural and mechanical properties of alumina reinforced Al7010 matrix composites, fabricated by stir casting, were investigated by varying size and volume fractions of alumina particles. The optical microscope, micro Vickers hardness tester, tensile tester, and impact testers were used to evaluate the microstructure and mechanical properties of produced alumina reinforced Al7010 matrix composites. Results show that the alumina reinforced Al7010 matrix composites, incorporating lower volume fractions of alumina particles, exhibited much better morphological and mechanical properties than composites with higher volume fractions. The composite with 14% alumina particles of size 15 µm exhibited uniform dispersion of alumina particles in the Al7010 matrix with superior interfacial bonding and negligible agglomeration of alumina particles and excellent morphological properties. On the other hand, the composite, having 21% alumina particles of size 1 µm demonstrated very poor morphological properties and intensive agglomeration of alumina particles. Similarly, the maximum values of Rm (349 MPa) and ÆT (3.41%) were also offered by composite, incorporating 14% Al2O3 particles of size 15 µm attributed to the uniform dispersion and negligible agglomeration of alumina particles throughout the matrix. The composite with 21% alumina particles of size 1 µm offered the minimum values of Rm (172 MPa) and ÆT (1.69%) due to the presence of intensive agglomeration of alumina particles. The superior impact toughness (11.4 J) and the overall optimum combination of morphological and mechanical properties were offered by the composite with 14% alumina particles of size 15 µm.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48960819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective reduction clearing parameters involving alternative reducing agent 包括替代还原剂的有效还原清除参数

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-05-31 DOI: 10.54693/piche.04916

M. Waqas, Syed Zameer Ul Hassan, S. Siddique, Ali Asghar, Anila Ali, Ali Raza Shafqat, Zafar Javed, Zohaib Iqbal, Mehwish Hafeez

{"title":"Effective reduction clearing parameters involving alternative reducing agent","authors":"M. Waqas, Syed Zameer Ul Hassan, S. Siddique, Ali Asghar, Anila Ali, Ali Raza Shafqat, Zafar Javed, Zohaib Iqbal, Mehwish Hafeez","doi":"10.54693/piche.04916","DOIUrl":"https://doi.org/10.54693/piche.04916","url":null,"abstract":"Dyeing of polyester is done by using disperse dyes. Some of the disperse dyes remain unfixed during dyeing and create problems in shade and colorfastness properties. Reduction clearing (RC) is a process to remove these unfixed dyes and to enhance colorfastness properties. In the Pakistani textile industry, reduction clearing is being done by using sodium dithionite (Na2S2O4), which has the best results in reducing dyestuff.Â The problem with sodium dithionite is that it is sensitive to air and also creates a lot of environmental issues. Its sensitivity causes inconsistent results of reduction clearing. Different dyers used different processes and recipes of reduction clearing. Thiourea Dioxide (TUD) is a green reducing agent and can be used as a replacement for sodium dithionite. TUD (CH4N2S) is a stable product with a comparable result with sodium dithionite. Interlock knitted fabric is used in this project whose composition has recycled polyester. The fabric was first dyed using black dyestuff and then reduction clearing was done on a lab-scale with different factors (Shade depth, the concentration of TUD, RC temperature). Three colorfastness tests were conducted to evaluate the different levels of each factor i.e. colorfastness to washing, fastness to perspiration, and fastness to water according to standard numbers ISO 105-C06, ISO 105-E04, and ISO 105-E01, respectively. It was observed that shade depth does not affect the results while concentration and RC temperature have a significant effect on the results. Moreover, the effective concentration of TUD was also determined.","PeriodicalId":17383,"journal":{"name":"Journal of the Pakistan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47454908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilization of Nagarparker kaolin for the synthesis of zeolite-zsm, a value added product Nagararker高岭土在合成zsm沸石中的应用

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-05-25 DOI: 10.54693/piche.04915

H. Mahar, S. A. Soomro, A. Memon, S. Holmes

引用次数: 0

A Technical Feasibility Study and Environmental Impacts of Green Cement Production from Recycled Fly Ash in Pakistan 巴基斯坦再生粉煤灰生产绿色水泥技术可行性及环境影响研究

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2021-04-14 DOI: 10.54693/piche.04914

H. Masood, S. Haider, U. Javed, N. Ali, S. Hussain, Muhammad Ashraf

引用次数: 0