Severe acute respiratory syndrome (SARS) coronavirus-2 was declared as world pandemic by WHO in 2019. It has been spreading very rapidly around the world and is responsible for various health issues. Different forms of corona viruses are capable of initiating infections in humans ranging from common cold to respiratory disorders including diarrhea. In this study, we have utilized the drug repurposing approach for identifying the therapeutic potential candidate for the inhibition of the nsp1 protein of a new porcine coronavirus 6lpa. 81 FDA approved antiviral agents were docked against this virus using discovery studio and PyRx software. Analysis of result reveals three compounds based on the best docking score: Abivertinib, Vazegepant and Elbasvir. Pharmacological and toxicological properties of the leads were also determined. Furthermore, molecular dynamics simulation studies were performed to determine the stability of complexes. RMSD of protein- ligand complex is showing excellent stability with all three drugs. Least conformational changes can be seen within Abivertinib complex which shows its stability during simulation process. These screened drugs obtained through drug repurposing approach can prove to be useful in treating the infections caused by porcine corona virus 6lpa after further studies.
{"title":"A Molecular Docking and Dynamic Simulation Study for the Inhibition of Porcine Coronavirus: Drug Repurposing Approach","authors":"Anupama Tiwari, Shweta Mishra, G.N. Darwhekar, Suman Mukhopadhyay","doi":"10.25303/2712rjce1380144","DOIUrl":"https://doi.org/10.25303/2712rjce1380144","url":null,"abstract":"Severe acute respiratory syndrome (SARS) coronavirus-2 was declared as world pandemic by WHO in 2019. It has been spreading very rapidly around the world and is responsible for various health issues. Different forms of corona viruses are capable of initiating infections in humans ranging from common cold to respiratory disorders including diarrhea. In this study, we have utilized the drug repurposing approach for identifying the therapeutic potential candidate for the inhibition of the nsp1 protein of a new porcine coronavirus 6lpa. 81 FDA approved antiviral agents were docked against this virus using discovery studio and PyRx software. Analysis of result reveals three compounds based on the best docking score: Abivertinib, Vazegepant and Elbasvir. Pharmacological and toxicological properties of the leads were also determined. Furthermore, molecular dynamics simulation studies were performed to determine the stability of complexes. RMSD of protein- ligand complex is showing excellent stability with all three drugs. Least conformational changes can be seen within Abivertinib complex which shows its stability during simulation process. These screened drugs obtained through drug repurposing approach can prove to be useful in treating the infections caused by porcine corona virus 6lpa after further studies.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289264","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}
Post treatment of Up-flow anaerobic sludge blanket reactor (UASBR) effluents by a duel chambered Microbial fuel cell (MFC) was evaluated for high strength distillery spent wash. Bench scale UASBR (5 L capacity) and MFC (1 L capacity) with carbon electrodes having proton exchange membrane were used to elucidate the energy generation potential and substrate (COD) removal efficiency. Step by step, the influent COD concentration of UASB-MFC unit was increased. The MFC shows increasing trend of open circuit voltage, COD removal and substrate degradation rate with increase in influent COD concentration. The maximum COD removal (73.79%) and open circuit voltage (1.1 V) were achieved at 20600 mg/L of COD. At maximum COD concentration, MFC showed power density (maximum), substrate degradation rate and power yield as 61.61mW/m2, 1.086 kg COD/m3day and 0.041 W/kg CODR respectively. UASB-MFC combined unit gave maximum COD removal of 90%. The experimental data revealed the potential of MFC as feasible, economic (cost saving) and sustainable option.
{"title":"Performance of Microbial fuel cell as a post treatment unit of UASB reactor for distillery spent wash","authors":"A.B. Saner, A.K. Mungray","doi":"10.25303/2712rjce900105","DOIUrl":"https://doi.org/10.25303/2712rjce900105","url":null,"abstract":"Post treatment of Up-flow anaerobic sludge blanket reactor (UASBR) effluents by a duel chambered Microbial fuel cell (MFC) was evaluated for high strength distillery spent wash. Bench scale UASBR (5 L capacity) and MFC (1 L capacity) with carbon electrodes having proton exchange membrane were used to elucidate the energy generation potential and substrate (COD) removal efficiency. Step by step, the influent COD concentration of UASB-MFC unit was increased. The MFC shows increasing trend of open circuit voltage, COD removal and substrate degradation rate with increase in influent COD concentration. The maximum COD removal (73.79%) and open circuit voltage (1.1 V) were achieved at 20600 mg/L of COD. At maximum COD concentration, MFC showed power density (maximum), substrate degradation rate and power yield as 61.61mW/m2, 1.086 kg COD/m3day and 0.041 W/kg CODR respectively. UASB-MFC combined unit gave maximum COD removal of 90%. The experimental data revealed the potential of MFC as feasible, economic (cost saving) and sustainable option.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289012","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}
Pub Date : 2023-11-05DOI: 10.25303/2712rjce1150122
Chandana Narasimha Rao, M. Sujatha
The heavy metals such as chromium (Cr), lead (Pb) and cadmium (Cd) are considered as serious toxicants and act as carcinogenic agents that cause serious cancers to humans. The use of these heavy metals drastically increased in various industrial applications and subsequently increased the risk of contamination of these heavy metals in soil, water etc. To minimize the negative effects of these heavy metals, there is a need to reduce these heavy metals concentrations in environment samples. Hence this study focused to fabricate iron nanoparticles using Diospyros chloroxylon (Roxb.) for the removal of carcinogenic metals in water. The crystal structure, size and morphology of the nanoaprticles were evaluated and it was found that the particles were of rod shape with smooth surface and rhombohedral phase structure with an average particle size of 24 nm that contains 71.91 % of elemental iron. The heavy metal sorption experiments was conducted using selected concentration of heavy metal solution at various pH ranges, time and agitation rate. The maximum adsorption removal was 95.36 %, 98.42 % and 92.80 % within 120 min equilibrium time for Cr, Pb and Cd respectively suggesting that the nanoparticles possess high adsorption efficiency. The adsorption process follows pseudo-first order reaction kinetics with correlation coefficient of 0.978, 0.994 and 0.994 with rate constant (K) of 0.140, 0.280 and 0.108 respectively for Cr, Pb and Cd. The results suggest that the synthesized iron nanoparticles were biocompatible, stable and reusable that can be effectively utilized as promising agents for the removal of carcinogenic heavy metals in polluted water.
{"title":"Characterization of Green synthesised Iron nanoparticles and application of synthesised Iron nanoparticles as an effective catalyst for the removal of Carcinogenic metals in aqueous solution","authors":"Chandana Narasimha Rao, M. Sujatha","doi":"10.25303/2712rjce1150122","DOIUrl":"https://doi.org/10.25303/2712rjce1150122","url":null,"abstract":"The heavy metals such as chromium (Cr), lead (Pb) and cadmium (Cd) are considered as serious toxicants and act as carcinogenic agents that cause serious cancers to humans. The use of these heavy metals drastically increased in various industrial applications and subsequently increased the risk of contamination of these heavy metals in soil, water etc. To minimize the negative effects of these heavy metals, there is a need to reduce these heavy metals concentrations in environment samples. Hence this study focused to fabricate iron nanoparticles using Diospyros chloroxylon (Roxb.) for the removal of carcinogenic metals in water. The crystal structure, size and morphology of the nanoaprticles were evaluated and it was found that the particles were of rod shape with smooth surface and rhombohedral phase structure with an average particle size of 24 nm that contains 71.91 % of elemental iron. The heavy metal sorption experiments was conducted using selected concentration of heavy metal solution at various pH ranges, time and agitation rate. The maximum adsorption removal was 95.36 %, 98.42 % and 92.80 % within 120 min equilibrium time for Cr, Pb and Cd respectively suggesting that the nanoparticles possess high adsorption efficiency. The adsorption process follows pseudo-first order reaction kinetics with correlation coefficient of 0.978, 0.994 and 0.994 with rate constant (K) of 0.140, 0.280 and 0.108 respectively for Cr, Pb and Cd. The results suggest that the synthesized iron nanoparticles were biocompatible, stable and reusable that can be effectively utilized as promising agents for the removal of carcinogenic heavy metals in polluted water.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289097","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}
1H-benzimidazole reacting with chloroacetone yielded 1-(1H-Benzo[d]imidazol-1-yl) propan-2-one.1-(1H-Benzo[d]imidazol-1-yl) propan-2-one further reacts with thiosemicarbazone to form novel ligand,2-(1-(1H- benzo[d] imidazol-1-yl) propan-2-ylidene) hydrazine carbo thioamide (BITS). Cu+2, Co+2, Ni+2, Mn+2 and Zn+2 metal complexes of BITS were synthesised from ligand BITS. Elemental analysis, IR-NMR spectral analysis, metal: ligand ratio and magnetic properties of all the ligand BITS and all metal complexes were characterized. The ligand BITS and all metal complexes also were screened for antibacterial Activity.
{"title":"Synthesis, Characterization and In vitro Antibacterial Activity of Novel Ligand and its Metal Complexes","authors":"Mohit Joshi, Sandip Patel, Harshadkumar Patel","doi":"10.25303/2711rjce07012","DOIUrl":"https://doi.org/10.25303/2711rjce07012","url":null,"abstract":"1H-benzimidazole reacting with chloroacetone yielded 1-(1H-Benzo[d]imidazol-1-yl) propan-2-one.1-(1H-Benzo[d]imidazol-1-yl) propan-2-one further reacts with thiosemicarbazone to form novel ligand,2-(1-(1H- benzo[d] imidazol-1-yl) propan-2-ylidene) hydrazine carbo thioamide (BITS). Cu+2, Co+2, Ni+2, Mn+2 and Zn+2 metal complexes of BITS were synthesised from ligand BITS. Elemental analysis, IR-NMR spectral analysis, metal: ligand ratio and magnetic properties of all the ligand BITS and all metal complexes were characterized. The ligand BITS and all metal complexes also were screened for antibacterial Activity.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766330","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}
Synthesis of β-Lactams (2-azitidinones) (βL-1 to βL-11) by Schiff base cyclization in presence of Et3N and chloroacetyl chloride was carried out through both the conventional as well as microwave methods. Microwave method gives very high yield in lesser time as compared to conventional one which takes few hours for completion. Product is obtained within few minutes when reaction takes place in microwave while in conventional method, it takes around 2-3 hrs and yield is meagre. β –Lactam is antibiotics of broad class which includes penicillin derivatives also. β- Lactam nucleus is present in these antibiotics in its molecular structure and attacks on bacteria by binding with enzyme inside bacterial cell wall. Lactams are the most prescribed group of antibiotics due to their tremendous efficacy in antimicrobial property.
{"title":"Synthesis of β-Lactams (2-Azitidinones) by using Schiff base via conventional and microwave synthesis","authors":"Kaushal Kumar, Neha Mishra, Mithun Kori, Ritu Yadav, Satya Prakash Shrivastava","doi":"10.25303/2711rjce1100113","DOIUrl":"https://doi.org/10.25303/2711rjce1100113","url":null,"abstract":"Synthesis of β-Lactams (2-azitidinones) (βL-1 to βL-11) by Schiff base cyclization in presence of Et3N and chloroacetyl chloride was carried out through both the conventional as well as microwave methods. Microwave method gives very high yield in lesser time as compared to conventional one which takes few hours for completion. Product is obtained within few minutes when reaction takes place in microwave while in conventional method, it takes around 2-3 hrs and yield is meagre. β –Lactam is antibiotics of broad class which includes penicillin derivatives also. β- Lactam nucleus is present in these antibiotics in its molecular structure and attacks on bacteria by binding with enzyme inside bacterial cell wall. Lactams are the most prescribed group of antibiotics due to their tremendous efficacy in antimicrobial property.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766196","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}
The global population is growing, and food waste from spoilage and contamination is a serious problem. Modern packaging systems are crucial nowadays to address these problems and maximize the profitability of the food industry by extending the shelf life and storage of food products. Among these, active packaging is attracting greater attention as it prevents microbial attack and extends the storability of the products. Bacteriocins and proteinaceous toxins from bacteria, can be integrated into the food packaging materials. Though they have not been widely used in the food packaging sector, they have previously been acclaimed as a potential alternative to chemical preservation techniques. This review encompasses a wide range of bacteriocins used in food packaging to prevent microbial contamination. More importantly, the difficulties encountered in the industry and the latest measures to remediate them are discussed in detail.
{"title":"Bacteriocins- Convincible component of antimicrobial film for food packaging: A Review","authors":"Aswin Sridhar, Janani Muthukumar, Akshay Thampi, Ramalingam Chidambaram","doi":"10.25303/2711rjce1420150","DOIUrl":"https://doi.org/10.25303/2711rjce1420150","url":null,"abstract":"The global population is growing, and food waste from spoilage and contamination is a serious problem. Modern packaging systems are crucial nowadays to address these problems and maximize the profitability of the food industry by extending the shelf life and storage of food products. Among these, active packaging is attracting greater attention as it prevents microbial attack and extends the storability of the products. Bacteriocins and proteinaceous toxins from bacteria, can be integrated into the food packaging materials. Though they have not been widely used in the food packaging sector, they have previously been acclaimed as a potential alternative to chemical preservation techniques. This review encompasses a wide range of bacteriocins used in food packaging to prevent microbial contamination. More importantly, the difficulties encountered in the industry and the latest measures to remediate them are discussed in detail.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766202","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}
Dyes are colored substances used to color fibers, leather, paper or foodstuffs etc. Due to the benign nature of dye extracted from natural sources, more importance is given on this area. Natural dyes also protect us from harmful UV rays of the sun and also provide superior quality sensory feelings in contrast to the carcinogenic effect of synthetic dyes. In this study, natural dyes present in the Eclipta alba L(Hassk) were extracted using conventional techniques under different operating conditions. Potential of the chemicals obtained from the extracts of Eclipta alba. L. was evaluated by coloring pure yarn of silk and wool. Various metal salts were used as mordants to set extracted dye on the fabrics and yarns. The result showed a variation of attractive and earthly green hue on silk and wool. The phyto chemical analysis of the extract reveals that three chemical compounds wedelolactone, apigenin and luteolin are mainly responsible for different shades of bluish green colour extract of the Eclipta alba plant. Spectrochemical analysis was done to identify the compounds present in the dye extract.
{"title":"Evaluation of dyeing properties of Eclipta Alba L. on protein yarn and their chemical analysis","authors":"Minti Gogoi, Bulbul Baruah, Pori Buragohain","doi":"10.25303/2711rjce045050","DOIUrl":"https://doi.org/10.25303/2711rjce045050","url":null,"abstract":"Dyes are colored substances used to color fibers, leather, paper or foodstuffs etc. Due to the benign nature of dye extracted from natural sources, more importance is given on this area. Natural dyes also protect us from harmful UV rays of the sun and also provide superior quality sensory feelings in contrast to the carcinogenic effect of synthetic dyes. In this study, natural dyes present in the Eclipta alba L(Hassk) were extracted using conventional techniques under different operating conditions. Potential of the chemicals obtained from the extracts of Eclipta alba. L. was evaluated by coloring pure yarn of silk and wool. Various metal salts were used as mordants to set extracted dye on the fabrics and yarns. The result showed a variation of attractive and earthly green hue on silk and wool. The phyto chemical analysis of the extract reveals that three chemical compounds wedelolactone, apigenin and luteolin are mainly responsible for different shades of bluish green colour extract of the Eclipta alba plant. Spectrochemical analysis was done to identify the compounds present in the dye extract.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766206","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}
Pub Date : 2023-10-15DOI: 10.25303/2711rjce1140121
Muhammad Maskur, Mohammad Sayuti, I Ketut Sumandiarsa, Rahmatang .
Seaweed is biological resource rich in bioactive compounds such as polysaccharides, polyphenols, proteins, pigments, fatty acids, polyamines, terpenoids and alkaloids that can be used in various food and non-food industries. The extraction method dramatically influences these bioactive compounds' amount and quality. In addition, environmental-friendly extraction methods are highly recommended, so this review provides an overview of the use of environmental-friendly, safe, affordable, effective and efficient extraction methods to produce maximum and sustainable bioactive compounds in seaweed. The environmental-friendly extraction methods include pressurized liquid extraction (PLE), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), enzyme-assisted extraction (EAE) and supercritical fluid extraction (SFE). The important thing that must be considered in determining the environmental-friendly extraction method used, is the bioactive target to be extracted from seaweed so that the bioactive compound obtained is maximal, effective and efficient.
{"title":"Environmental-Friendly Extraction Methods to produce Bioactive Compounds in Seaweed","authors":"Muhammad Maskur, Mohammad Sayuti, I Ketut Sumandiarsa, Rahmatang .","doi":"10.25303/2711rjce1140121","DOIUrl":"https://doi.org/10.25303/2711rjce1140121","url":null,"abstract":"Seaweed is biological resource rich in bioactive compounds such as polysaccharides, polyphenols, proteins, pigments, fatty acids, polyamines, terpenoids and alkaloids that can be used in various food and non-food industries. The extraction method dramatically influences these bioactive compounds' amount and quality. In addition, environmental-friendly extraction methods are highly recommended, so this review provides an overview of the use of environmental-friendly, safe, affordable, effective and efficient extraction methods to produce maximum and sustainable bioactive compounds in seaweed. The environmental-friendly extraction methods include pressurized liquid extraction (PLE), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), enzyme-assisted extraction (EAE) and supercritical fluid extraction (SFE). The important thing that must be considered in determining the environmental-friendly extraction method used, is the bioactive target to be extracted from seaweed so that the bioactive compound obtained is maximal, effective and efficient.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766192","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}
Pub Date : 2023-10-15DOI: 10.25303/2711rjce0970109
Abhimati Shukla, Lalit Kumar Singh
Isolation of a potent microorganism from the soil near tanneries and a comparative analysis of the removal and recovery of different concentrations of hexavalent chromium using known strain Aspergillus terreus and isolated strain Aspergillis proliferansLA are done. The isolated fungal species from the chromium contaminated soil sites located in the industrial area of Kanpur, U.P. were tested for its potential for the removal of hexavalent chromium from wastewater streams. The experiments were conducted comparing the biosorption efficiency of the isolated species Aspergillus proliferansLA and Aspergillus terreus by varying the initial Cr (VI) concentration and media constituents. The highest removal efficiency of 99.19% was shown by the isolated species Aspergillus proliferansLA for an initial Cr (VI) concentration of 10ppm followed by increasing the concentration to 50ppm whereas Aspergillus terreus showed 78.43% removal of hexavalent chromium. This was then followed by desorption using 0.8M NaOH and 75.12% hexavalent chromium was desorbed from the cells. The isolated strain Aspergillus proliferansLA was seen to show better removal and recovery results than the known strain Aspergillus terreus.
{"title":"A comparative study on the removal and recovery of hexavalent chromium from tannery wastewater using an isolated strain Aspergillus proliferans LA and a known strain Aspergillus terreus","authors":"Abhimati Shukla, Lalit Kumar Singh","doi":"10.25303/2711rjce0970109","DOIUrl":"https://doi.org/10.25303/2711rjce0970109","url":null,"abstract":"Isolation of a potent microorganism from the soil near tanneries and a comparative analysis of the removal and recovery of different concentrations of hexavalent chromium using known strain Aspergillus terreus and isolated strain Aspergillis proliferansLA are done. The isolated fungal species from the chromium contaminated soil sites located in the industrial area of Kanpur, U.P. were tested for its potential for the removal of hexavalent chromium from wastewater streams. The experiments were conducted comparing the biosorption efficiency of the isolated species Aspergillus proliferansLA and Aspergillus terreus by varying the initial Cr (VI) concentration and media constituents. The highest removal efficiency of 99.19% was shown by the isolated species Aspergillus proliferansLA for an initial Cr (VI) concentration of 10ppm followed by increasing the concentration to 50ppm whereas Aspergillus terreus showed 78.43% removal of hexavalent chromium. This was then followed by desorption using 0.8M NaOH and 75.12% hexavalent chromium was desorbed from the cells. The isolated strain Aspergillus proliferansLA was seen to show better removal and recovery results than the known strain Aspergillus terreus.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766203","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}
The aim of this study is the determination of thermodynamic parameters of the adsorption of phenol onto sewage sludge based adsorbent (SSBA) by different methods. Thermodynamic parameters are calculated from three equilibrium constants (Kc) that were derived from the isotherm constants of Langmuir (KL), the distribution coefficient (Kd) and Freundlich isotherm exponent (n). For this, removal of phenol from aqueous solutions by adsorption under batch equilibrium experimental conditions at 293, 303 and 328 K was investigated. All values obtained for ΔG° are negatives this indicated that the adsorption process of phenol on the SSBA is spontaneous and thermodynamically feasible process. We also note that as the temperature increases, the absolute value of ΔG° decreases, it shows that the adsorption is more spontaneous at low temperatures. All values of the standard enthalpy ΔH° are negative and less than 35 kJ.mol-1 which confirm that the process is an exothermic physisorption. The negative values of the standard entropy ΔS° clearly show that the arrangement of phenol molecules is more preferred on the surface of the adsorbent.
{"title":"Determination of Thermodynamic Parameters of Phenol Adsorption onto Sewage Sludge based Adsorbent by different Methods","authors":"Salim Bousba, Nabil Bougdah, Nabil Messikh","doi":"10.25303/2711rjce01006","DOIUrl":"https://doi.org/10.25303/2711rjce01006","url":null,"abstract":"The aim of this study is the determination of thermodynamic parameters of the adsorption of phenol onto sewage sludge based adsorbent (SSBA) by different methods. Thermodynamic parameters are calculated from three equilibrium constants (Kc) that were derived from the isotherm constants of Langmuir (KL), the distribution coefficient (Kd) and Freundlich isotherm exponent (n). For this, removal of phenol from aqueous solutions by adsorption under batch equilibrium experimental conditions at 293, 303 and 328 K was investigated. All values obtained for ΔG° are negatives this indicated that the adsorption process of phenol on the SSBA is spontaneous and thermodynamically feasible process. We also note that as the temperature increases, the absolute value of ΔG° decreases, it shows that the adsorption is more spontaneous at low temperatures. All values of the standard enthalpy ΔH° are negative and less than 35 kJ.mol-1 which confirm that the process is an exothermic physisorption. The negative values of the standard entropy ΔS° clearly show that the arrangement of phenol molecules is more preferred on the surface of the adsorbent.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766329","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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