Chemical and Process Engineering Research最新文献_第6页

Seasonal Variation of the Water Quality of the Senegal River (Mauritania) 塞内加尔河(毛里塔尼亚)水质的季节变化

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/JOURNAL.65/2014.1.1/65.1.1.9

A. N’diaye, M. Kankou

{"title":"Seasonal Variation of the Water Quality of the Senegal River (Mauritania)","authors":"A. N’diaye, M. Kankou","doi":"10.18488/JOURNAL.65/2014.1.1/65.1.1.9","DOIUrl":"https://doi.org/10.18488/JOURNAL.65/2014.1.1/65.1.1.9","url":null,"abstract":"The aim ofthis studyis to monitor and to assessthe physicochemicalwater qualityof the river Senegal during the rainy and dry season. The conventional physico-chemical parameters (pH, EC and DO), dissolved and suspended particles (turbidity and TSS), OM and nitrateswere considered in this study. The samples are collected at the Beni Nadji site between February and November 2012. The values of the measured parameters were compared with WHO standards for drinking water quality.The findings show that all the physicochemical parameters measured were within the tolerable values except the turbidity and TSS that exceeded with respectively the maximum values of 980 NTU and 674 mg/L for the rainy season only. The analysis of the correlation matrix can be noted strong correlations between the turbidity and TSS (0.996), turbidity and OM (0.924), TSS and OM (0.931), nitrates and TSS (0.814), nitrates and turbidity (0.800) and nitrates and OM (0.744). These strong correlations allow us to say that these parameters are governed by the same mechanism or phenomenon that could possibly be leaching during the rainy season.Therefore, frequent monitoring of physicochemical parameters of Senegal River water resources is imperative.","PeriodicalId":9769,"journal":{"name":"Chemical and Process Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74419048","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 Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol) 常用酸和阴离子对铁(Ii)从水溶液中萃取到4,4′-(1e,1e′)-1,1′-(乙烷-1,2-二基双(azan -1- yl- 1- ylidene)) -(5-甲基-2-苯基-2,3-二氢-1h-吡唑-3-醇)氯仿溶液中的影响

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/journal.65/2014.1.6/65.6.59.72

J. Godwin, A. Inengite, U. Chukwu

{"title":"Effect of Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol)","authors":"J. Godwin, A. Inengite, U. Chukwu","doi":"10.18488/journal.65/2014.1.6/65.6.59.72","DOIUrl":"https://doi.org/10.18488/journal.65/2014.1.6/65.6.59.72","url":null,"abstract":"The effect of common acids, anions, and auxiliary complexing agents in the solvent extraction of Fe2+ from aqueous solutions into chloroform solutions of 4,4´-(1E,1E´)-1,1´-(ethane-1,2-diylbis(azan-1-yl-1ylidene))bis(5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-ol) (H2BuEtP) alone and in the presence of of 1-(3-hydroxy-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl) butan-1-one (HBuP) was studied. Colorimetric method of analysis using 1,10-phenanthroline was used to determine concentrations of Fe2+ in aqueous solutions after extraction and percentage extraction determined by difference. Separation factors βXY were calculated using data from previous studies using same organic phases to determine theoretical conditions for separating Fe2+ from Ni2+, Pb2+, and UO22+. All acids gave > 90% extraction of Fe2+ at most concentrations with HNO3 and H3PO4 giving the highest percentage extraction of 99.93% at 0.01M and 0.1M respectively in the mixed ligands H2BuEtP/HBuP organic system. H3PO4 also gave best extraction of 99.3% at 0.1M in ligand H2BuEtP alone system. Although all anions used for study also gave > 90% extraction of Fe2+ at different concentration in both types of organic phases, CHCOO-, PO43-, Br- and tartrate ions gave the best extraction of Fe2+ with H2BuEtP. Acids and anions behave as salting out agents or masking agents at different concentrations. Calculated separation factors βXY indicated that it was theoretically possible to separate Fe2+ from Ni2+ with H3PO4 only and Fe2+ from Pb2+ with H3PO4, HCl, and EDTA with H2BuEtP alone. With mixed ligands H2BuEtP/HBuP, calculated separation factors βXY showed that it was possible to separate Fe2+ from Ni2+ with HNO3 and H3PO4, Fe2+ from Pb2+ with HCl and oxalate, and Fe2+from U(VI) with CHCOOH, PO43-, Br- and oxalate. The number of batches of extraction n needed to achieve 99.9% separations are also calculated and shown.","PeriodicalId":9769,"journal":{"name":"Chemical and Process Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73305655","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: 3

Evaluating Treatment Process of Produced Water from Oil/Gas Production Platform with Scale Inhibitor 应用阻垢剂处理油气平台采出水工艺评价

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/JOURNAL.65/2014.1.6/65.6.121.131

A. A. Ujile, K. Dagde

引用次数: 0

Mirpur Benarasi Palli of Bangladesh: Living and Livelihood of Weavers 孟加拉国的Mirpur Benarasi Palli:织布工的生活和生计

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/journal.65/2014.1.6/65.6.87.97

J. Ferdous, Shammi Shawal, Tasfia Tasnim Badhon

{"title":"Mirpur Benarasi Palli of Bangladesh: Living and Livelihood of Weavers","authors":"J. Ferdous, Shammi Shawal, Tasfia Tasnim Badhon","doi":"10.18488/journal.65/2014.1.6/65.6.87.97","DOIUrl":"https://doi.org/10.18488/journal.65/2014.1.6/65.6.87.97","url":null,"abstract":"Bangladesh has a rich and ancient tradition of fabric-based cottage industry. Benarasi Palli and its famous Benarasi Saree is one of the most ancient traditions of Bangladesh. This industry has been bringing name and fame for our country for a very long time. This tradition has mainly come from Benaras in India. The weavers of Mirpur Benarasi Palli migrated from Benaras, India. There are also some Bangladeshi weavers and most of the traders are Bangladeshi. Benarasi is mainly associated for bridal costume. Presently this industry does not get proper attention but it has a great demand in local and international market. Our neighboring country export Benarasi products and we have the potential to export it too. Though the business of Benarasi Saree is very profitable, life-style of the weavers does not represent it. Besides, a clear discrimination in living condition of traders and weavers are visible there. There also lies discrimination in distribution of profit between traders and weavers. So it is very important to know about the present condition of Benarasi Palli and condition of the weavers who work hard to make the beautiful Benerasi Sarees.","PeriodicalId":9769,"journal":{"name":"Chemical and Process Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90892586","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

On The Features of the Negative Temperature Coefficient Phenomenon in Combustion of N-Pentane-Air Mixtures 正戊烷-空气混合气燃烧负温度系数现象的特征

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/JOURNAL.65/2014.1.6/65.6.51.58

N. M. Rubtsov, A. Borisov, G. I. Skachkov, K. Troshin

引用次数: 3

Synthesis, Physico-Chemical and Antimicrobial Properties of Some Metal (II) -Mixed Ligand Complexes of Tridentate Schiff Base Derives From Β-Lactam Antibiotic {(Cephalexin Mono Hydrate)-4-Chlorobenzophenone} and Saccharin Β-Lactam抗生素{(头孢氨苄一水)-4-氯苯甲酮}与糖精三齿希夫碱金属混合配体的合成、理化及抗菌性能

Chemical and Process Engineering Research Pub Date : 2014-01-01 DOI: 10.18488/JOURNAL.65/2014.1.6/65.6.109.120

T. AL-Noor, A. J. Jarad, Abaas Obaid Hussein

{"title":"Synthesis, Physico-Chemical and Antimicrobial Properties of Some Metal (II) -Mixed Ligand Complexes of Tridentate Schiff Base Derives From Β-Lactam Antibiotic {(Cephalexin Mono Hydrate)-4-Chlorobenzophenone} and Saccharin","authors":"T. AL-Noor, A. J. Jarad, Abaas Obaid Hussein","doi":"10.18488/JOURNAL.65/2014.1.6/65.6.109.120","DOIUrl":"https://doi.org/10.18488/JOURNAL.65/2014.1.6/65.6.109.120","url":null,"abstract":"A new Schiff base (4-chlorophenyl)(phenyl methanimine (6R,7R)-3-methyl-8-oxo-7-(2-phenylpropanamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate=HL=C29H24ClN3O4S) has been synthesized from β-lactam antibiotic (cephalexin mono hydrate (CephH)=(C16H19N3O5S.H2O) and 4- chlorobenzophenone. Metal mixed ligand complexes of the Schiff base were prepared from chloride salt of Fe(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II), in 50% (v/v) ethanol – water medium in aqueous ethanol(1:1) and Saccharin(C7H5NO3S) containing sodium hydroxide. Several physical tools in particular; IR, C:H:N , 1H NMR,13C NMR for ligand, melting point, molar conductance, magnetic moment. and determination of the percentage of the metal in the complexes by flame(AAS). The ligand and their metal complexes were screened for their antimicrobial activity against four bacteria (gram +ve) and (gram -ve) [Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus]. The proposed structure of the complexes using the program, Chem office 3D (2006) and the general formula have been given for the prepared mixed ligand complexes [M(Sac)3(L)].","PeriodicalId":9769,"journal":{"name":"Chemical and Process Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81466271","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

Kinetics and Mechanisms of Cadmium (Ii) Ion Sorption Using Carbonized and Modified Sorghum (Sorghum Bicolor) Hull of Two Pore Sizes (CMSH 150µm and 250µm) 两种孔径(CMSH 150µm和250µm)的碳化改性高粱(Sorghum Bicolor)壳吸附镉(Ii)离子的动力学与机理

Chemical and Process Engineering Research Pub Date : 1900-01-01 DOI: 10.18488/JOURNAL.65/2015.2.4/65.4.44.58

C. Imaga, Abia A.a

引用次数: 4