JOURNAL OF ADVANCES IN CHEMISTRY最新文献_第2页

Thermochemical Liquefaction Kraft Lignin As A Waste Management Process. 热化学液化硫酸盐木质素作为废物处理过程。

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2020-06-09 DOI: 10.24297/jac.v17i.8715

Bob O. Soile, Felix Oyeyiola Moses Akiibinu

{"title":"Thermochemical Liquefaction Kraft Lignin As A Waste Management Process.","authors":"Bob O. Soile, Felix Oyeyiola Moses Akiibinu","doi":"10.24297/jac.v17i.8715","DOIUrl":"https://doi.org/10.24297/jac.v17i.8715","url":null,"abstract":"Waste management is the collection, transportation, processing or disposal, monitoring, and managing of waste materials. It tries to reduce the harmful environmental impact of each through different methods, which include but not limited to landfill, incineration, recycling, biological processing, and reduction methods. Generation, utilization and disposal of waste is increasingly becoming a significant problem in many cities of the world, with an exploding world population estimated to have a global doubling time now less than twenty years. This research focuses on energy recovery as a viable method of disposal of non-hazardous biomass components of municipal solid waste with a prototype waste kraft lignin material using the thermochemical liquefaction process. The process used high pressure, high temperature in the presence of kraft lignin, slurry solvent, and a suitable catalyst to produce a mixture of gases, liquid, and solid capable of been used as fuels and chemicals and providing an alternative to the other methods. This value-adding process serves a dual purpose of providing a source of energy and providing an alternative waste management method.","PeriodicalId":14904,"journal":{"name":"JOURNAL OF ADVANCES IN CHEMISTRY","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86987798","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 Temperature Extraction on the Potassium and Calcium Content in the Lemon and Orange Water Peel Extracts 温度提取对柠檬和橘子水皮提取物中钾、钙含量的影响

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2020-04-19 DOI: 10.24297/jac.v17i.8714

Amra Bratovcic

{"title":"Effect of Temperature Extraction on the Potassium and Calcium Content in the Lemon and Orange Water Peel Extracts","authors":"Amra Bratovcic","doi":"10.24297/jac.v17i.8714","DOIUrl":"https://doi.org/10.24297/jac.v17i.8714","url":null,"abstract":"The aim of this study is to examine the effect of temperature extraction on the potassium (K) and calcium (Ca) contents in orange and lemon peel extracts. The extractions were done at 62 ºC and 92 °C for 15 minutes and atmospheric pressure in distilled water. The fruit peel content in the extraction mixture was 5 % (w/v) in all samples. Calcium (Ca) and potassium (K) concentrations have been determined by flame photometric method. This research has revealed that by increasing the temperature of extraction, in particular, the concentration of Ca and K concentrations increased as applied extraction temperatures increased. The concentration of potassium is higher than the concentration of calcium in orange and lemon extracts, respectively. The concentration of K was 308 mg/l at 62 ºC and 361 mg/l at 92 ºC in lemon extracts, while in orange extracts the concentration of K was 476 mg/l at 62 ºC and 483 mg/l at 92 ºC. The concentration of Ca was 70.8 mg/l at 62 ºC and 71.9 mg/l at 92 ºC in lemon extracts, while in orange extracts the concentration of Ca was 91 mg/l at 62 ºC and 93.6 mg/l at 92 ºC. These results confirm that both citrus could be a very valuable source of potassium and calcium which are needed micronutrients to ensure the water and electrolyte balance and to build and maintain strong bones, proper function of muscles and nerves.","PeriodicalId":14904,"journal":{"name":"JOURNAL OF ADVANCES IN CHEMISTRY","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82903683","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 a Ag+-Selective Electrode Based on Naphthalimide Derivative as Ionophore 以萘酰亚胺衍生物为离子载体的银离子选择性电极的表征

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2020-04-10 DOI: 10.24297/jac.v17i.8685

Z. Jun, Chen Qiwei, Zhang Wenting, Yuan Chunwei, Zhang Qinnan, Yang Shouhong, Yao Bin, Xu Xuan

引用次数: 0

Improving Quality of Water from Murchison Bay using Clay from Chelel, Kapchorwa District, Ugandao 使用乌干达卡普乔瓦地区Chelel的粘土改善默奇森湾水质

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2020-01-04 DOI: 10.24297/jac.v17i.8537

Z Mukasa-TebandekeI., I. Karume, Z WasajjaH., R Nankinga

{"title":"Improving Quality of Water from Murchison Bay using Clay from Chelel, Kapchorwa District, Ugandao","authors":"Z Mukasa-TebandekeI., I. Karume, Z WasajjaH., R Nankinga","doi":"10.24297/jac.v17i.8537","DOIUrl":"https://doi.org/10.24297/jac.v17i.8537","url":null,"abstract":"Pollution resulting from increased human activities is threatening Lake Victoria, its effects are characterized by eutrophication, high turbidity, pH, iron(II) concentration and chemical oxygen demand (COD). In this study we have investigated the effect of Fe-montmorillonite clay from Chelel on turbidity, pH, concentration of iron, total suspended soils, total nutrients and COD of water sampled from Murchison bay watershed of Nakivubo channel south of Kampala. Varying amounts of clay powder was vigorously stirred with water samples for 5 minutes, filtered using Whitman paper at ambient temperatures. The optimum concentration of clay of 0.4gl-1 was found to produce 73.5+ 2% fall in COD indicating elimination of microbes and organic waste. The pH of water became 6.3+ 0.2 showing that impurities had been bound to clay. The turbidity of filtrate dropped to 15.7+ 0.3NTUshowing that clarity of water was improved by adsorption of suspended solids to clay minerals. The concentration of iron(II) fell from 3.7 + 0.3 to 2.5+ 0.2mgl-1 indicating fairly high extent of heavy metal removal from Murchison bay (MB) waters. The TSS and nutrients in MB water also decreased greatly when clay was stirred with water at ambient temperatures. The available data can be relied on to recommend use of this clay in treatment of waste water and/or sewage from Kampala. Further studies on combined use of clays with alums, zeolites and/or lime need to be carried out.","PeriodicalId":14904,"journal":{"name":"JOURNAL OF ADVANCES IN CHEMISTRY","volume":"358 ","pages":"1-29"},"PeriodicalIF":0.0,"publicationDate":"2020-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91460265","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: 1

Synthesis and DFT Study of Newly Schiff Base and Fused Heterocyclic Compounds as Antibacterial Agent 新型席夫碱及熔融杂环类抗菌剂的合成及DFT研究

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-11-07 DOI: 10.24297/jac.v16i0.8499

S. Rizk, I. Awheda, F. A. Smida

引用次数: 0

The Clitocybins and 2-Substituted-Isoindolin-1-Ones: Synthesis and in Vitro Antimycobacterial Activities 阴蒂菇素和2-取代异吲哚-1- 1的合成及其体外抑菌活性

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-10-28 DOI: 10.24297/jac.v16i0.8476

Amani Mejai, Nambinina V. Rakotoarivelo, Ennaji Najahi, P. Pério, É. Hollande, M. Pasca, R. Abidi, F. Nepveu

引用次数: 1

Chemical Speciation and Mobility of Heavy Metals in Soils Around Nasara Sack and Packaging Company Akwanga, Nigeria 尼日利亚阿旺加纳萨拉麻袋和包装公司周围土壤中重金属的化学形态和流动性

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-10-05 DOI: 10.24297/jac.v16i0.8434

E. Yerima, B. Hikon, C. Ogbodo, H. Ataitiya, J. D. Ani

引用次数: 3

Levels of Toxic Metals in Skin Lightening Agents Marketed in Nigeria 尼日利亚市场上销售的美白剂中有毒金属的含量

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-07-01 DOI: 10.24297/JAC.V16I0.8317

M. Akiibinu, Olutola Bob Soile, Lilian Esther Akinade, S. Akiibinu

{"title":"Levels of Toxic Metals in Skin Lightening Agents Marketed in Nigeria","authors":"M. Akiibinu, Olutola Bob Soile, Lilian Esther Akinade, S. Akiibinu","doi":"10.24297/JAC.V16I0.8317","DOIUrl":"https://doi.org/10.24297/JAC.V16I0.8317","url":null,"abstract":"Background: Bleaching agents produced by registered companies in developed countries have regulated concentrations. But various local skin lightening agents produced in Africa, especially Nigeria have no identified active agent. This study determined the levels of potentially toxic heavy metals constituents of bleaching agents commonly used by Nigerians. Methods: Twelve different types of skin lightening creams (Extra white, Make me white, Extract, Perfect white, UV lightening, Pure skin, Body treat, Dodo up, Bronze tone, White express, Peau Claire and Otentika) available Nigerian markets were randomly collected based on their usage and availability. Three non- lightening creams served as the controls for this study. Levels of mercury, lead, cadmium, chromium and arsenic were determined in both lightening and non- lightening creams (controls) using atomic absorption spectrophotometer (AAS). Results: All lightening creams 12/12 (100%) contained significantly (p<0.05) higher levels of mercury compared with the control. 11/12 (91.7%) of the lightening creams contained significantly (p>0.05) higher levels of lead compared with the control. Levels of arsenic were significantly (p<0.05) higher in 11/12 (91.7%) of the lightening creams compared with control. Levels of cadmium increase significantly (p<0.05) in 4/12 (22.92%) of the lightening creams compared with the control. 4/12 (22.92%) of the lightening creams contained significantly (p<0.05) higher levels of chromium compared with control.","PeriodicalId":14904,"journal":{"name":"JOURNAL OF ADVANCES IN CHEMISTRY","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78729817","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: 1

Oxidative Study of Benzaldehyde by Isoqauinolinium Bromo Chromate 异喹啉溴铬酸盐氧化苯甲醛的研究

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-04-30 DOI: 10.24297/JAC.V16I0.8248

A. Dwivedi, K. Sharma, A. Dwivedi

引用次数: 0

Synthesis, Spectral Characterization, Thermal and In vitro Antimicrobial Studies for Novel Co(II) and Ni(II) Complexes of (N,N'-(1,2-Phenylene)Bis(2-Aminobenzamide) 新型(N,N'-(1,2-苯基)双(2-氨基苯酰胺)Co(II)和Ni(II)配合物的合成、光谱表征、热及体外抗菌研究

JOURNAL OF ADVANCES IN CHEMISTRY Pub Date : 2019-04-30 DOI: 10.24297/JAC.V16I0.8264

H. El-Boraey, Azza A. Serag El-Din, Ahmed A. Sakr

{"title":"Synthesis, Spectral Characterization, Thermal and In vitro Antimicrobial Studies for Novel Co(II) and Ni(II) Complexes of (N,N'-(1,2-Phenylene)Bis(2-Aminobenzamide)","authors":"H. El-Boraey, Azza A. Serag El-Din, Ahmed A. Sakr","doi":"10.24297/JAC.V16I0.8264","DOIUrl":"https://doi.org/10.24297/JAC.V16I0.8264","url":null,"abstract":"Novel metal complexes of Co(II) and Ni(II) have been prepared from reaction of their different salts with previously prepared ligand (L) namely (N,N'-(1,2-phenylene)bis(2-aminobenzamide). Synthesis ligand and its metal (II) complexes (1-5) were reported and characterized with the help of analytical and physiochemical analysis as elemental, IR spectra, thermal (TG/DTG), UV-Vis, magnetic susceptibility and molar conductance in DMF, On the view of the previous data and measurements, the structure and composition species behave as mononuclear and octahedral geometry has been proposed for all the complexes except for complex (1) adopted tetrahedral structure. Furthermore, the in vitro antibacterial Staphylococcus aureus (ATCC 25923) as Gram-positive strain, Escherichia coli (ATCC 25922) as Gram-negative strain and antifungal Candida albicans (ATCC 10231) have been studied for all samples using disc diffusion method against Ampicillin and Fluconazole as positive controls, respectively. The results show that complexation facilitates the activity of most studied metal complexes than the free ligand.","PeriodicalId":14904,"journal":{"name":"JOURNAL OF ADVANCES IN CHEMISTRY","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89117519","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