A. Jangher, S. M. Aghila, H. A. Jamhour, B. M. Mahara
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.
{"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":"99 1","pages":""},"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}
As an unnecessary element for human body, aluminum can cause a variety of diseases when ingested in excess, so it is of great significance for Al3+ detection. A new rhodamine probe with excellent photochromic properties based on Al3+- induced ring-opening mechanism of the rhodamine spirolactam was proposed. Upon binding with Al3+, the generated 1:1 P1-Al3+ complex, confirmed by Job’s plot titrations analysis. Could exhibit a remarkable fluorescence enhancement with a limit of detection (LOD) of 0.33 μM, and colorimetric response toward Al3+ in presence of other common metal ions and anions. The design thought can enrich the development of probes for Al3+.
{"title":"Construction of A Turn On Probe for Al3+ Based on Rhodamine B Derivative","authors":"Huang Xiao-juan, Jun Zhang, Yuan Chun-wei","doi":"10.32861/ajc.74.61.66","DOIUrl":"https://doi.org/10.32861/ajc.74.61.66","url":null,"abstract":"As an unnecessary element for human body, aluminum can cause a variety of diseases when ingested in excess, so it is of great significance for Al3+ detection. A new rhodamine probe with excellent photochromic properties based on Al3+- induced ring-opening mechanism of the rhodamine spirolactam was proposed. Upon binding with Al3+, the generated 1:1 P1-Al3+ complex, confirmed by Job’s plot titrations analysis. Could exhibit a remarkable fluorescence enhancement with a limit of detection (LOD) of 0.33 μM, and colorimetric response toward Al3+ in presence of other common metal ions and anions. The design thought can enrich the development of probes for Al3+.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79208927","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}
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.
{"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":"228 1","pages":""},"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}
Hana B. AlHanash, Ragiab A. M. Issa, Heba A. AlJabo
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.
{"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":"47 1","pages":""},"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}
It is of great significance to find a suitable method to detect Fe3+ due to its essential role in human and animal health. Artificial chemosensors have been a suitable method in view of simple preparation, fast response, et al. [Aim]: A selective Fe3+ chemosensor was designed. [Method]: A novel Fe3+-selective chemosensor was rationally designed based on pyrene derivative by the introduction of benzoyl hydrazine. [Results] The proposed chemosensor presented good selectivity for Fe3+ in presence of other common metal ions. [Conclusions]: The proposed idea can be used for reference to enrich chemosensors.
{"title":"A Chemosensor for Fe3+ Detection Derived from Pyrene","authors":"Liangri Ying, Yuan Chun-wei","doi":"10.32861/ajc.73.42.46","DOIUrl":"https://doi.org/10.32861/ajc.73.42.46","url":null,"abstract":"It is of great significance to find a suitable method to detect Fe3+ due to its essential role in human and animal health. Artificial chemosensors have been a suitable method in view of simple preparation, fast response, et al. [Aim]: A selective Fe3+ chemosensor was designed. [Method]: A novel Fe3+-selective chemosensor was rationally designed based on pyrene derivative by the introduction of benzoyl hydrazine. [Results] The proposed chemosensor presented good selectivity for Fe3+ in presence of other common metal ions. [Conclusions]: The proposed idea can be used for reference to enrich chemosensors.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72653191","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}
Shakshooki S. K., El-Akari F. A., Suheila E. Kara, E. M. K.
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.
{"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":"71 1","pages":""},"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}
Cosme Sagbo Kouwanou, E. S. Adjou, C. P. Agbangnan Dossa, Dominique Codjo Koko Sohounhloué
In the context of energy transition and the reduction of greenhouse gas emissions, the production of second-generation bioethanol is also recognized as a promising way to reduce our dependence on fossil fuels. Then, the present studies aim to evaluate the enzymatic biocatalysis of biomass from aquatic plant Phragmite karka in the second-generation bioethanol production. Results obtained revealed a rapid decrease of °Brix during the fermentation of musts and underlined the efficacy of enzyme hydrolysis. The rate of sugar consumption by yeasts is between 32.43 and 70.27%. The yield of ethanol production of yeasts indicated that Angel Brand Thermal-tolerant alcohol active dry yeast was the best yeast strain for this fermentation. These findings underline the potential of Phragmite karka plant materials in the perspective of intensive production of second-generation bioethanol.
{"title":"Enzymatic Biocatalysis of Biomass from Aquatic Plant Phragmite Karka for Second-Generation Bioethanol Production","authors":"Cosme Sagbo Kouwanou, E. S. Adjou, C. P. Agbangnan Dossa, Dominique Codjo Koko Sohounhloué","doi":"10.32861/ajc.72.17.22","DOIUrl":"https://doi.org/10.32861/ajc.72.17.22","url":null,"abstract":"In the context of energy transition and the reduction of greenhouse gas emissions, the production of second-generation bioethanol is also recognized as a promising way to reduce our dependence on fossil fuels. Then, the present studies aim to evaluate the enzymatic biocatalysis of biomass from aquatic plant Phragmite karka in the second-generation bioethanol production. Results obtained revealed a rapid decrease of °Brix during the fermentation of musts and underlined the efficacy of enzyme hydrolysis. The rate of sugar consumption by yeasts is between 32.43 and 70.27%. The yield of ethanol production of yeasts indicated that Angel Brand Thermal-tolerant alcohol active dry yeast was the best yeast strain for this fermentation. These findings underline the potential of Phragmite karka plant materials in the perspective of intensive production of second-generation bioethanol.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":"27 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91437394","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}
F. Y. Larial, M. El-ajaily, N. M. El-Barasi, A. Maihub, R. Mohapatra, T. AL-Noor
Novel three mixed ligand complexes derived from the interaction of Cr(III), Fe(III) and La(III) ions with a Schiff base resulted from the condensation process of 2-aminophenol and 2-hydroxy acetophenone(HL1) as a primary ligand (HL1) and anthranilic acid (L2) as a secondary ligand. The formed mixed ligand complexes were synthesized and characterized using elemental analysis, FTIR, 1HNMR, UV–visible and mass spectroscopy as well as molar conductance and magnetic measurements. The obtained results revealed that the mixed ligand complexes were formed in 1:1:1[L1ML2] ratio and non-electrolytic in nature.
{"title":"Synthesis and Spectral Studies of Mixed Ligand Complexes of Trivalent Metal Ions","authors":"F. Y. Larial, M. El-ajaily, N. M. El-Barasi, A. Maihub, R. Mohapatra, T. AL-Noor","doi":"10.32861/ajc.71.1.9","DOIUrl":"https://doi.org/10.32861/ajc.71.1.9","url":null,"abstract":"Novel three mixed ligand complexes derived from the interaction of Cr(III), Fe(III) and La(III) ions with a Schiff base resulted from the condensation process of 2-aminophenol and 2-hydroxy acetophenone(HL1) as a primary ligand (HL1) and anthranilic acid (L2) as a secondary ligand. The formed mixed ligand complexes were synthesized and characterized using elemental analysis, FTIR, 1HNMR, UV–visible and mass spectroscopy as well as molar conductance and magnetic measurements. The obtained results revealed that the mixed ligand complexes were formed in 1:1:1[L1ML2] ratio and non-electrolytic in nature.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87602439","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}
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
Background: Steroids are naturally occurring organic compounds with a great variety of different biological functions. They are subdivided into progesterone, mineralocorticoids, glucocorticoids, androgens, and estrogens, depending on their function. Aim: In this literature review, we are introducing the most updated information about steroids in terms of their history, functions, types either according to their occurrence or biological activity, different pathways of synthesis, and uses. Methods: reported methods are mentioned in detail. Results and Discussion: Steroids are the mainstay of therapy for a variety of disorders and knowledge of the clinical implications of steroids is critical.
{"title":"Steroids in Medicinal Chemistry: Literature Review","authors":"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","doi":"10.32861/ajc.63.69.78","DOIUrl":"https://doi.org/10.32861/ajc.63.69.78","url":null,"abstract":"Background: Steroids are naturally occurring organic compounds with a great variety of different biological functions. They are subdivided into progesterone, mineralocorticoids, glucocorticoids, androgens, and estrogens, depending on their function. Aim: In this literature review, we are introducing the most updated information about steroids in terms of their history, functions, types either according to their occurrence or biological activity, different pathways of synthesis, and uses. Methods: reported methods are mentioned in detail. Results and Discussion: Steroids are the mainstay of therapy for a variety of disorders and knowledge of the clinical implications of steroids is critical.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":"791 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90601357","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}
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.
{"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":"124 1","pages":""},"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}
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