Journal of Advanced Chemical Sciences最新文献_第6页

Mangifera indica Mediated Synthesis of Silver Nanoparticles as An Efficient Electrochemical Sensor for The Detection of Ascorbic Acid 芒果叶介导的银纳米粒子作为检测抗坏血酸的高效电化学传感器

Journal of Advanced Chemical Sciences Pub Date : 2019-08-01 DOI: 10.30799/JACS.200.19050204

S. Mamuru, O. O. Joseph, Moorey B. Dalen, Iliya Kaigamma, A. E. Eseyin

引用次数: 1

Rapid Removal of Nickel(II) by Coconut Leaves Powder as Bioadsorbent 椰叶粉作为生物吸附剂快速去除镍(II

Journal of Advanced Chemical Sciences Pub Date : 2019-05-10 DOI: 10.30799/JACS.210.19050202

Patil Komal Lalsing

{"title":"Rapid Removal of Nickel(II) by Coconut Leaves Powder as Bioadsorbent","authors":"Patil Komal Lalsing","doi":"10.30799/JACS.210.19050202","DOIUrl":"https://doi.org/10.30799/JACS.210.19050202","url":null,"abstract":"In the present paper adsorption technique was employed for the removal of heavy metal Ni(II). The heavy metals are important for proper functioning of biological systems but their deficiency or excess lead to a large number of disorders. Industrial effluents discharged contain higher amount of heavy metals such as Ni, Cd, Hg, Cr and Cu. In this research article low cost and eco-friendly coconut leaves powder as a bioadsorbent were employed for the removal of Ni(II) from industrial wastewater. The batch adsorption study were conducted for the removal of Ni(II) along with different parametric studies of Initial concentration of nickel metal, adsorbent dose, pH, contact time and temperature. The coconut leaves powder bioadsorbent as an experimental research was applied for the systematic and effective investigation to determine the optimal conditions of the operation variables. The employed coconut leaves powder (CLP) bioadsorbent gives positive results, the adsorption of Ni(II) is very rapid and most of fixation occurs at first 15 minutes. The adsorption kinetics obeys second order kinetic. The CLP adsorbent were characterized by SEM analysis before and after treatment, which shows sufficient adsorption of Ni(II) on CLP. The result suggests that coconut leaves powder bioadsorbent can be beneficial in Ni(II) removal from the contaminated water.","PeriodicalId":14902,"journal":{"name":"Journal of Advanced Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85697972","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: 2

Effect of Addition of Polypropylene Fibers on The Properties of Gypsum Blocks 聚丙烯纤维掺量对石膏砌块性能的影响

Journal of Advanced Chemical Sciences Pub Date : 2019-05-10 DOI: 10.30799/JACS.208.19050201

F. Barakat, N. F. A. Salam

引用次数: 2

Design of Chalcones of 7-Azaindole as Raf-B Inhibitors 7-叠氮哚查尔酮作为Raf-B抑制剂的设计

Journal of Advanced Chemical Sciences Pub Date : 2019-01-07 DOI: 10.30799/jacs.183.18040404

D. Giles, V. Saiprabha, G. Yeshna

引用次数: 1

Diverse Interactions of N-Methyl Glycine in Aqueous Paracetamol Solution with the Manifestation of Solvation Consequences n -甲基甘氨酸在扑热息痛水溶液中的多种相互作用及其溶剂化后果的表现

Journal of Advanced Chemical Sciences Pub Date : 2019-01-05 DOI: 10.30799/JACS.199.18040403

H. Rahaman, K. Sarkar, Debasmita Das, Mahendra Nath Roy

{"title":"Diverse Interactions of N-Methyl Glycine in Aqueous Paracetamol Solution with the Manifestation of Solvation Consequences","authors":"H. Rahaman, K. Sarkar, Debasmita Das, Mahendra Nath Roy","doi":"10.30799/JACS.199.18040403","DOIUrl":"https://doi.org/10.30799/JACS.199.18040403","url":null,"abstract":"The apparent molar volume (ϕV) and viscosity B-coefficient of N-methyl glycine of 0.01 M, 0.02 M and 0.03 M aqueous solutions have been estimated in presence of paracetamol at three temperatures namely 298.15 K, 303.15 K and 308.15 K from physicochemical study such as density (ρ) and viscosity (η) and refractive index measurements and 1 H NMR spectroscopy. The volumetric study was employed to evaluate limiting apparent molar volumes (ϕ V 0 ) and experimental slopes (S V *) by using Masson equation for explaining solute–solvent and solute–solute interactions, respectively. The nature of group interactions between the solute, solvent and co-solute have been examined from limiting apparent molar volumes of transfer (Δϕ V 0 ) values. The viscosity data were employed to determine viscosity A and B coefficients from Jones–Dole equation and the resulting parameters were used to examine the solute–solute and solute–solvent interactions in the solutions. Molar refraction values calculated from refractive indices by applying Lorentz–Lorenz equation were used to depict the intermolecular interactions between N-methyl glycine and paracetamol in their aqueous solution. However, the 1 H NMR spectroscopy supports the existence of diverse interactions concretely.","PeriodicalId":14902,"journal":{"name":"Journal of Advanced Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77201482","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

Characterization of Minim-Martap Bauxite and Its Extracted Alumina 微量martap铝土矿及其萃取氧化铝的表征

Journal of Advanced Chemical Sciences Pub Date : 2018-11-27 DOI: 10.30799/JACS.198.18040402

P. Zé, C. Tsamo, R. Kamga

{"title":"Characterization of Minim-Martap Bauxite and Its Extracted Alumina","authors":"P. Zé, C. Tsamo, R. Kamga","doi":"10.30799/JACS.198.18040402","DOIUrl":"https://doi.org/10.30799/JACS.198.18040402","url":null,"abstract":"Due to their chemical and mineralogical properties bauxites are composites with multiple applications. In this work, the properties of bauxite collected from Minim-Martap and its extracted alumina were evaluated. Alumina was extracted by adapting the Bayer process at laboratory scale while the characteristics of bauxite and alumina were variably characterized by determining the particle size distribution, relative humidity, loss on ignition, pH, EC, CEC, PZC, XRD, IR, and DSC-TGA. These results show that Minim-Martap bauxite gray bauxite with easily extractable alumina. This bauxite is acidic with a pH of 6.05, PZC of 6.91 and CEC of 15 Meq/100 g which is closer to that of kaolinite clays. This result was confirm by XRD which shows two types of kaolinites: Al2Si2O5(OH)4 with 83.24% and H4Al2Si2O9 with 42.47%, mullite Al2.25Si0.75O4.875 with 67.32%, gibbsite (H2SiO4) with 83.92%. The bauxite is hydroscopic as evident from its humidity results. The IR spectroscopy of bauxite and alumina shows the presence of Al-OH and Si-OH which increase with acid treatment. Minim-martap bauxite and its extracted alumina can be used as raw materials for many industrial processes because of the different properties they possess as revealed by this study.","PeriodicalId":14902,"journal":{"name":"Journal of Advanced Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83636695","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: 2

Methanolysis of Low FFA Waste Vegetable Oil using Homogeneous Base Catalyst for Biodiesel Production: New Process Design 用均相碱催化剂甲醇分解低游离脂肪酸废植物油生产生物柴油:新工艺设计

Journal of Advanced Chemical Sciences Pub Date : 2018-11-21 DOI: 10.30799/JACS.196.18040401

E. G. Al-Sakkari, S. El-Sheltawy, A. Soliman, I. Ismail

引用次数: 2

Treatment of Acid Orange 74 Wastewater and Sugar Wastewater by Low Cost Adsorbents 低成本吸附剂处理酸性橙74废水和制糖废水

Journal of Advanced Chemical Sciences Pub Date : 2018-10-27 DOI: 10.30799/JACS.188.18040304

Saisanthosh Vamshi Harsha Madiraju, Y. Hung, Howard H. Paul

引用次数: 4

Transesterification of Low FFA Waste Vegetable Oil using Homogeneous Base Catalyst for Biodiesel Production: Optimization, Kinetics and Product Stability 均相碱催化低游离脂肪酸废植物油酯交换制备生物柴油:优化、动力学和产品稳定性

Journal of Advanced Chemical Sciences Pub Date : 2018-10-27 DOI: 10.30799/JACS.195.18040305

E. G. Al-Sakkari, S. El-Sheltawy, A. Soliman, I. Ismail

引用次数: 14

Ceramic Waste-Based Natural Rubber Composites: An Exciting Way for Improving Mechanical Properties 陶瓷废料基天然橡胶复合材料:一种令人兴奋的改善机械性能的方法

Journal of Advanced Chemical Sciences Pub Date : 2018-09-19 DOI: 10.30799/JACS.191.18040303

Y. G. Kondarage, H. Pitawala, T. Kirushanthi, D. Edirisinghe, T. Etampawala

{"title":"Ceramic Waste-Based Natural Rubber Composites: An Exciting Way for Improving Mechanical Properties","authors":"Y. G. Kondarage, H. Pitawala, T. Kirushanthi, D. Edirisinghe, T. Etampawala","doi":"10.30799/JACS.191.18040303","DOIUrl":"https://doi.org/10.30799/JACS.191.18040303","url":null,"abstract":"Large amounts of fired ceramic waste produced in ceramic industry do not have a proper method to reuse and mainly thrown away into landfills since fired ceramics have already been sintered and thus their utilization as a raw material is limited. However, these solid wastes have a major environmental and economic concern. Thus, a proper management of such solid wastes is eminent. This research is dedicated to evaluating the possibility of using such ceramic waste as a low-cost filler material in the manufacture of natural rubber based composites. Ceramic particles smaller than 125 μm were selected initially for the preparation natural rubber based composites. For the latter part of the study, particles in sub-micrometer length scales were used. Elemental analyses and composition of the phases of the ceramic particles were determined by X-ray fluorescence and diffraction respectively. The average particle size was characterized by scanning electron microscope (SEM). The surfaces of the sub micrometer size ceramic particles were modified using Silane69 coupling agent. The surface modification was confirmed by Fourier-transform infrared spectroscopy, thermo gravimetric analysis and SEM coupled with energy-dispersive X-ray spectroscopy. Natural rubber based composites were prepared with different levels of ceramic filler loadings. The mechanical properties of the composites such as hardness, resilience, compression set, abrasion volume loss and tensile properties were evaluated. These properties of the composites were compared with those of the composites prepared according to the same formulation except the ceramic filler (control). The composites were found to have an exciting enhancement of mechanical properties with respect to the control. The mechanical property improvement is higher when the ball milled sub-micrometer size ceramic filler is used and it is even better when surface modified ceramic particles are used.","PeriodicalId":14902,"journal":{"name":"Journal of Advanced Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87278599","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: 2