Academic Journal of Chemistry最新文献_第2页

Performance of Libyan Bentonite as Adsorbent for Methylene Blue Dye: Isotherms, Kinetics and Thermodynamic Studies 利比亚膨润土对亚甲基蓝染料吸附剂的性能:等温线、动力学和热力学研究

Academic Journal of Chemistry Pub Date : 2023-01-14 DOI: 10.32861/ajc.81.1.11

A. Jangher, S. M. Aghila, H. A. Jamhour, B. M. Mahara

{"title":"Performance of Libyan Bentonite as Adsorbent for Methylene Blue Dye: Isotherms, Kinetics and Thermodynamic Studies","authors":"A. Jangher, S. M. Aghila, H. A. Jamhour, B. M. Mahara","doi":"10.32861/ajc.81.1.11","DOIUrl":"https://doi.org/10.32861/ajc.81.1.11","url":null,"abstract":"This study provides an overview of natural and activated of Umm-Al- Razam, Libyan bentonite clay (north east of Libya region), as an offered adsorbent of anionic dye, methylene blue (MB) dye from aqueous solution; where the adsorption isotherms applied experimentally to investigate the effect of adsorbent dosage in a batch mode range from (0.1-1.2g), pH (1,3,5,7,9 and11), initial MB concentration (5,10,20,30,40 and 50ppm), temperature (25,35,45 and 55oC) and contact time range from (5 - 120min).The Characterization of natural Libyan bentonite (NLBn) and activated Libyan bentonite (ALBn)) was carried out firstly by infrared spectroscopy (FT-IR), electronic scanning microscopy(SEM) and X-ray diffraction (XRD) technique. The data analyzed by different models (Langmuir, Freundlich and Temkin) to describe the equilibrium isotherms and thermodynamic parameters such as Gibbs free energy change (ΔG) The data analyzed by different models (Langmuir, Freundlich and Temkin) to describe the equilibrium isotherms and thermodynamic parameters such as Gibbs free energy change (ΔG), enthalpy change (ΔH) and entropy change (ΔS) of the system were calculated. The results showed the equilibrium adsorption data of (NLBn) was fit better the Langmuir adsorption model but for (ALBn) was fit better to Temkin. The adsorption capacity for the removal of MB was 4.3 mg/g and 4.9 mg/g at different concentration on (NLBn) and (ALBn) respectively. Kinetics of dye removal was investigated and found to follow pseudo second order rate constant. The sorption and desorption capacity of MB was found to be 95% and 99% by both (NLBn and ALBn) respectively.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77221977","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

Construction of A Turn On Probe for Al3+ Based on Rhodamine B Derivative 基于罗丹明B导数的Al3+导通探针的构建

Academic Journal of Chemistry Pub Date : 2022-12-20 DOI: 10.32861/ajc.74.61.66

Huang Xiao-juan, Jun Zhang, Yuan Chun-wei

引用次数: 0

Detection of Haloacetic Acid in Swimming Pool in Haikou and Its Influencing Factors 海口市游泳池中卤化乙酸的检测及其影响因素

Academic Journal of Chemistry Pub Date : 2022-12-06 DOI: 10.32861/ajc.74.55.60

Huang Xiao-juan, Guan Qing, Yuan Chun-wei

{"title":"Detection of Haloacetic Acid in Swimming Pool in Haikou and Its Influencing Factors","authors":"Huang Xiao-juan, Guan Qing, Yuan Chun-wei","doi":"10.32861/ajc.74.55.60","DOIUrl":"https://doi.org/10.32861/ajc.74.55.60","url":null,"abstract":"Chlorine disinfection is a commonly applied disinfection products due to its effectiveness, strong disinfection ability, and low cost. The objective of this study is to investigate the occurrence of haloacetic acids (HAAs), a group of disinfection byproducts, in swimming pool and spa water, and analyze its influencing factors, so as to provide reference to understand the pollution status of haloacetic acid (HAAs) disinfection byproducts in swimming pool water in Haikou, for the formulation of hygienic standards and sanitation management of HAAs in swimming pool water. The samples were collected from 18 swimming places with sanitary licenses in Haikou. For a period from April to July 2022. High performance liquid chromatography -tandem mass spectrometry (HPLC-MS) was used to detect the concentration of HAAs in swimming pool water, and its influencing factors were also analyzed. . Results indicated that the levels of average concentration of HAAs in indoor and outdoor swimming pools were 176.20 μg•L-1 and 241.53 μg•L-1, respectively. There were differences in the levels of HAAs in indoor and outdoor swimming places (p<0.05). The Pearson correlation analysis showed that the concentration of HAAs was positively correlated with free chlorine and urea (p<0.05). The water quality and sanitation of the swimming pools in this survey were somewhat poor. It is necessary to formulate the regulation of HAAs in the swimming pool sanitation standards, strengthen the water quality sanitation management, and take further effective measures to reduce the concentration of HAAs to protect swimmers.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79017218","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

Adsorption of UO 22+ on Fibrous Cerium Phosphate and its Alanine and Arginine Intercalated Materials 纤维状磷酸铈及其丙氨酸和精氨酸插层材料对uo22 +的吸附

Academic Journal of Chemistry Pub Date : 2022-12-06 DOI: 10.32861/ajc.74.47.54

Hana B. AlHanash, Ragiab A. M. Issa, Heba A. AlJabo

{"title":"Adsorption of UO 22+ on Fibrous Cerium Phosphate and its Alanine and Arginine Intercalated Materials","authors":"Hana B. AlHanash, Ragiab A. M. Issa, Heba A. AlJabo","doi":"10.32861/ajc.74.47.54","DOIUrl":"https://doi.org/10.32861/ajc.74.47.54","url":null,"abstract":"Amorphous fibrous cerium (IV) phosphate (f-CeP) was prepared and characterized. Batch sorption method was performed to investigate uptake of uranyl ion (UO2)2+ aqueous solution by amorphous fibrous cerium phosphate f-CeP, using different variables in order to elucidate its applicability as a uranium sorption medium. Sorption of Uranyl ions was measured spectrophotometically after its extraction by 8-hydroxy quinoline, implementing best adsorption conditions (pH, contact time, ionic strength, amount of adsorbent, and initial uranyl ion concentration) for estimation. Exchange capacity of f-CeP was 4.25meq/g. Its x-ray powder diffraction pattern showed an amorphous material with d001 spacing value of 10.76 Å. While its amino acid intercalates showed a significant increase in the d001 to 11.33Å for f-CeP / alanine and 14.19Å for f-CeP / arginine. From spectrophotometric analysis, the results showed that the maximum uranyl ion adsorption capacity reached the initial concentration of 50ppm, pH 4.5, contact time 3hrs and adsorption dosage of 2 g/L. However, amino acid intercalates showed less adsorption efficiency than their parent analogue.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84732094","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

A Chemosensor for Fe3+ Detection Derived from Pyrene 一种由芘衍生的Fe3+化学传感器

Academic Journal of Chemistry Pub Date : 2022-08-20 DOI: 10.32861/ajc.73.42.46

Liangri Ying, Yuan Chun-wei

引用次数: 0

γ-Zirconium Titanium-Phosphates – Fibrous Cerium Phosphate / Polyaniline, Polyindole, Polycarbazole and Polyimidazole Nanocomposite Membranes γ-磷酸锆钛-纤维状磷酸铈/聚苯胺、聚吲哚、聚咔唑和聚咪唑纳米复合膜

Academic Journal of Chemistry Pub Date : 2022-06-01 DOI: 10.32861/ajc.72.30.41

Shakshooki S. K., El-Akari F. A., Suheila E. Kara, E. M. K.

{"title":"γ-Zirconium Titanium-Phosphates – Fibrous Cerium Phosphate / Polyaniline, Polyindole, Polycarbazole and Polyimidazole Nanocomposite Membranes","authors":"Shakshooki S. K., El-Akari F. A., Suheila E. Kara, E. M. K.","doi":"10.32861/ajc.72.30.41","DOIUrl":"https://doi.org/10.32861/ajc.72.30.41","url":null,"abstract":"Layered nanosized mixed γ-zirconium titanium phosphates and fibrous cerium phosphate, γ-ZrxTi(1-x)..PO4.H2PO4.2H2O (γ-ZTP), Ce(HPO4)2.2.9H2O(nCePf), respectively, (x= 0.95, 0.89), and their [γ-ZrxTi(1-x).PO4. H2PO4]0.3 [Ce(HPO4)2]0.70. 2H2O nanocomposite membranes were prepared and characterized by chemical, x-ray diffraction (XRD), thermogravimetric analysis (TGA) and Fourier transform spectroscopy (FT-IR). Novel [γ-ZrxTi(1-x).PO4.H2PO4]0.3[Ce(HPO4)2]0.70 /polyaniline, polyindole, polycarbazole, and polyimidazole nanocomposite membranes were prepared via in-situ chemical oxidation of the monomers aniline, indole, carbazole and imidazole, respectively, that was promoted by the reduction of Ce(IV) ions present on the surface of the inorganic matrix composite. A possible explanation is nCePf occurs at the surface of the composite was attacked by the monomers, respectively, converted to cerium (III) orthophosphate (CePO4). The resultant novel composites were characterized by elemental (C,H,N) analysis and FT-IR. From elemental (C,H,N) analysis the % in weight of the resultant conducting polymers present in [γ-Zr0.95Ti0.05.PO4.H2PO4]0.3 [Ce(HPO4)2]0.70 composite were [ Pani 19.35, PIn 5,72. PCz 5.8, PIm 23.7]%. The % in weight of the conducting polymers in the composite [γ-Zr0.9Ti0.11.PO4.H2PO4]0.3[[Ce(HPO4)2]0.70 were [Pani 8.54, PIn 8.02, PCz 7.72, PIm 22.27]%. The conductivity of the resultant conducting polymers found to be in the range of semiconductors.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81517449","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

Enzymatic Biocatalysis of Biomass from Aquatic Plant Phragmite Karka for Second-Generation Bioethanol Production 水生植物芦苇生物质的酶法生物催化生产第二代生物乙醇

Academic Journal of Chemistry Pub Date : 2022-04-12 DOI: 10.32861/ajc.72.17.22

Cosme Sagbo Kouwanou, E. S. Adjou, C. P. Agbangnan Dossa, Dominique Codjo Koko Sohounhloué

引用次数: 0

Synthesis and Spectral Studies of Mixed Ligand Complexes of Trivalent Metal Ions 三价金属离子混合配体配合物的合成及光谱研究

Academic Journal of Chemistry Pub Date : 2022-03-03 DOI: 10.32861/ajc.71.1.9

F. Y. Larial, M. El-ajaily, N. M. El-Barasi, A. Maihub, R. Mohapatra, T. AL-Noor

引用次数: 0

Steroids in Medicinal Chemistry: Literature Review 药物化学中的类固醇:文献综述

Academic Journal of Chemistry Pub Date : 2021-08-13 DOI: 10.32861/ajc.63.69.78

S. Ibrahim, Esraa H Elshafiey, Esraa K. Al batreek, Esraa R. Abdulrahim, Esraa R. Azazy, Esraa Z. Abd-Elghany, Esraa S. Mahmoud, Esraa S.Hassan, Esraa S. Amin, Esraa S. Kamal, E. Ali, Mahmoud M. Sebaiy

引用次数: 2

Optimization of Toluidine Blue Biosorption in Aqueous Solutions Using Polyporus Squamosus Fungi as Absorbent by Response Surface Methodology 响应面法优化鳞状水蛭真菌对甲苯胺蓝的吸附效果

Academic Journal of Chemistry Pub Date : 2021-08-05 DOI: 10.32861/ajc.63.60.68

L. Esmail

{"title":"Optimization of Toluidine Blue Biosorption in Aqueous Solutions Using Polyporus Squamosus Fungi as Absorbent by Response Surface Methodology","authors":"L. Esmail","doi":"10.32861/ajc.63.60.68","DOIUrl":"https://doi.org/10.32861/ajc.63.60.68","url":null,"abstract":"Textile wastewater including a large number of dyes and heavy metals can have adverse impacts on human health and surface water. In this work, biosorption Toluidine Blue from aqueous media onto natural Polypourus squamosus fungi as a low-cost biosorbent was investigated. Central Composite Design (CCD) in Response Surface Methodology (RSM) was successfully applied to optimize the biosorption condition. Medium parameters affected the biosorption of Toluidine Blue were determined to be initial pH, initial Toluidine Blue (Tb) concentration, temperature, and absorbent dosage. All experiments were carried out in a batch system using 250 mL flasks containing 100 mL of Toluidine Blue solution with a temperature-controlled magnetic stirrer. The Tb concentrations remaining in filtration solutions after biosorption were analyzed using UV-Spectro. With the obtained quadratic model, the optimal conditions for maximum biosorbed Toluidine blue were calculated to be 7, 27.5 mg/L, 35°C and 0.05 g for pH, C°, T (°C) and adsorbent dosage, respectively. Furthermore, most known isotherm models such as Langmuir and Freundlich were computed to find the best-fitted model.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82886276","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