Indian Journal of Chemical Technology最新文献_第9页

Singular fractional technique for free convective Casson hybrid nanofluid with optically thick medium and shape effects 具有光学厚介质和形状效应的自由对流卡森混合纳米流体的奇异分数技术

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i4.71682

N. M. Lisha, Vijaya Kumar

{"title":"Singular fractional technique for free convective Casson hybrid nanofluid with optically thick medium and shape effects","authors":"N. M. Lisha, Vijaya Kumar","doi":"10.56042/ijct.v30i4.71682","DOIUrl":"https://doi.org/10.56042/ijct.v30i4.71682","url":null,"abstract":"The transmission of heat in a time-dependent flow of a viscid non-Newtonian hybrid nanofluid comprising magnetite and copper oxide nanoparticles persuaded by an upright plate has been explored in regards to the effect of heat radiation and nanoparticle shape factors. The fluid flow phenomenon of the problem is constructed using the derivative of the Caputo fractional order 0 1  . As a hybrid method, the dimensionless governing fractional partial differential equation was solved analytically using transforms such as Laplace and Fourier sine. With the Mittag-Leffler function, analytical solutions are achieved for fluid flow, energy distribution, rate of heat transmission, and shear stress. Moreover, limit-case solutions for classical PDEs were given for the derived governing flow model. Graphical depictions, tables, and bar graphs are constructed using \"MATLAB\" for a thorough examination of the problem. The graphical findings suggest that the efficiency of hybrid nanofluids is substantially better with the Caputofractional order approach than with ordinary derivatives. Finally, a comparison with existing literature results is performed and determined to be good.","PeriodicalId":13388,"journal":{"name":"Indian Journal of Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70702092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Chlorella biomass as a potential source of algal oil: Investigations on optimization of ultrasonic assisted extraction, kinetics and characterization of algal oil 小球藻生物质作为藻油的潜在来源:藻油超声辅助提取工艺优化、动力学及表征研究

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i4.71688

T. Devi, R. Pravin, G. Baskar

{"title":"Chlorella biomass as a potential source of algal oil: Investigations on optimization of ultrasonic assisted extraction, kinetics and characterization of algal oil","authors":"T. Devi, R. Pravin, G. Baskar","doi":"10.56042/ijct.v30i4.71688","DOIUrl":"https://doi.org/10.56042/ijct.v30i4.71688","url":null,"abstract":"The creation of renewable and affordable alternative energy is required due to the growing need for sustainable energy. In this present research work, algal oil has been extracted from microalgae biomass of Chlorella vulgaris using the Soxhlet apparatus. The algal biomass is ultrasonically pretreated to disrupt the cell walls of Chlorella sp. A total of five homogeneous solvent extractions are performed. As a result, the use of chloroform and isopropanol showed higher algal oil yields of 10.8% and 9.1%, respectively. Therefore, heterogeneous solvent approaches have been used in different volume ratios (5:1 to 1:5) to improve the yield of algal oil. Accordingly, the findings demonstrated that as compared to homogeneous solvents, the use of heterogeneous solvents shows better yield of algal oil from Chlorella sp. biomass. A maximum bio-oil yield of 12.3% was obtained using chloroform and isopropanol at a ratio of 3:3. To improve the extraction yields of algal oil, various parameters were optimized. The optimized parameters include 20 min of ultrasonication time, 3:1 ratio of solvent to biomass, temperature of 50 ℃ , and an extraction period of 90 min. Further, extracted algal oil is characterised using GC-MS, and the results shows the presence of octadecanoic acid in the extracted algal oil. GC-MS analysis of the extracted edalgal oil has shown the suitability of the oil for transesterification reaction for the production of fatty acid methyl esters.","PeriodicalId":13388,"journal":{"name":"Indian Journal of Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70702103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Exploration of antimicrobial and antifungal compounds in Clonostachys rosea using gas chromatography - mass spectrometry 气相色谱-质谱联用技术研究玫瑰花中抗菌和抗真菌化合物

4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i6.6541

引用次数: 0

Extraction of starch and phenolic compounds from Mangifera indica L. var. Kesar seeds and its characterization 芒果种子中淀粉和酚类物质的提取及其特性研究

4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i6.6547

{"title":"Extraction of starch and phenolic compounds from Mangifera indica L. var. Kesar seeds and its characterization","authors":"","doi":"10.56042/ijct.v30i6.6547","DOIUrl":"https://doi.org/10.56042/ijct.v30i6.6547","url":null,"abstract":"The present study is aimed to examine the effect of various parameters (pH, solid to liquid ratio, extraction time and temperature) on starch content, total phenolic content (TPC) and antioxidant activity of extracts obtained from seed kernel of mango var. Kesar. Isolation of starch from mango kernel by employing the ethanol precipitation method has been assessed. Box-Behnken design has been used to develop, validate and optimize the statistical model in order to establish the impact of various parameters either alone or in combination followed by characterization of starch. A decrease in pH has increased the extraction of starch while other responses such as TPC and antioxidant activity did not show a significant variation. The yield of total phenolic compound has been improved with decrease in solid to liquid ratio by increasing the solvent volume. The optimum conditions have been found to be 2.5 pH, 24 min extraction time and 1:55 g/mL solid to liquid ratio. Under these conditions, the highest extraction yield of starch and TPC are found to be 13.93 g/100 g and 33.45 mg GAE/g, respectively. No significant variation in antioxidant activity has been observed. A better and value-added utilization of the waste material can tender environmentally sustainable and economically viable solution.","PeriodicalId":13388,"journal":{"name":"Indian Journal of Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135659506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of synergetic effect of green chemicals on dissolution of tank bottom sludge 绿色化学品对池底污泥溶解的协同效应研究

4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i6.4025

{"title":"Study of synergetic effect of green chemicals on dissolution of tank bottom sludge","authors":"","doi":"10.56042/ijct.v30i6.4025","DOIUrl":"https://doi.org/10.56042/ijct.v30i6.4025","url":null,"abstract":"The present paper discusses the study on dissolution dispersion efficiency of tank bottom sludge (TBS) in the presence of new series of green chemical additives i.e., Ionic Liquids (ILs). This work highlights the synthesis of series of six imidazolium based ILs ([BMIm]Br, [BMIm]BF 4 , [PMIm]Br, [PMIm]BF 4 , [HMIm]Br, and [HMIm]BF 4 ) along with their influence on dissolution of the TBS. Dissolution–dispersion efficiency of the TBS is evaluated by calculating the residue and absorbance data of the standard solutions along with TBS solution in the presence of solvents independently followed by treatment with synthesized ILs by UV spectroscopy. Dissolution of TBS in heptane is found to be 40%, however it increases to 88% when employed along with 800 ppm of [BMIm]BF 4 . Similarly [PMIm]Br shows extreme dissolution efficiency at 800 ppm up to 80% and 82% in the presence of toluene and heptane, respectively. ILs work by softening the TBS which is accumulated at the bottom of the tank. It also helps in diminishing the use of toxic organic solvents. Interaction of IL product with the suitable solvent can directly influence the dissolution efficiency of TBS. ILs have the potential to replace toxic organic solvents used in oil and gas industry.","PeriodicalId":13388,"journal":{"name":"Indian Journal of Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135661277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on adsorptive removal study of organic pollutant(s) using activated sorbents from waste contaminated water 活性吸附剂对废水中有机污染物的吸附去除研究进展

4区工程技术

Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI: 10.56042/ijct.v30i5.5213

{"title":"A review on adsorptive removal study of organic pollutant(s) using activated sorbents from waste contaminated water","authors":"","doi":"10.56042/ijct.v30i5.5213","DOIUrl":"https://doi.org/10.56042/ijct.v30i5.5213","url":null,"abstract":"There is a serious environmental concern being encountered for increase in the rate of water pollution occurs by the contamination of several industrial discharges. The key issue of the contamination water is owing to the content of various non degradable toxic components in it which lead to cause life threatening to both plants and animal lives. In particular, the industrial effluent bears substantial amount of waste dyes, pesticides and pharmaceuticals wastes and those are carcinogenic in nature. This review is an attempt to cover the adoption of various activated sorbents including, charcoal, activated carbon, clay materials, organic extracts of the plants and nanomaterials for sorption studies of waste contaminates from the different kinds of waste water. The origin of organic pollutants, their nature, development of numerous activated adsorbents, characteristics properties of the sorbents and their suitable adoption for removal of contaminates is systematically discussed. The significance of the sorption mechanism accomplishing the kinetics, isotherm and thermodynamics on interaction of the adsorbents with organic pollutants are extensively described and reported.","PeriodicalId":13388,"journal":{"name":"Indian Journal of Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135446563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Cu - water nanofluid flow with different particle shapes over an isothermal moving plate 等温移动板上不同颗粒形状的铜水纳米流体流动分析

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2022-01-01 DOI: 10.56042/ijct.v29i3.53987

引用次数: 0

Treatment by agricultural by-products of Industrial effluents polluted with heavy metals 重金属污染工业废水的农业副产物处理

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2022-01-01 DOI: 10.56042/ijct.v29i3.54646

引用次数: 2

A new Ca(II) coordination polymer: Structural characterization and treatment activity on childhood asthma 一种新型Ca(II)配位聚合物:结构表征及对儿童哮喘的治疗作用

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2022-01-01 DOI: 10.56042/ijct.v29i3.55723

引用次数: 0

Recovery of baking soda from reverse osmosis reject of desalination plant using carbon dioxide gas 利用二氧化碳气体从海水淡化厂反渗透废水中回收小苏打

IF 0.5 4区工程技术

Indian Journal of Chemical Technology Pub Date : 2022-01-01 DOI: 10.56042/ijct.v29i2.58091

引用次数: 0