Pub Date : 2024-08-13DOI: 10.1016/j.jiec.2024.08.015
Seungdae Oh, Hiep T. Nguyen, Kehinde Shola Obayomi, Sharf Ilahi Siddiqui
The present study advances our understanding of the ecological risk potential associated with pharmaceutical mixtures treated with fungal enzymes. We optimized a submerged bioreactor for fungal enzyme production by testing three fungal species and adjusting the organic loading rate and retention time, yielding enzyme activities exceeding 20 U/L. These fungal enzymes effectively reduced the half-lives of tetracycline and sulfamethoxazole to less than 3 hours in a mixture of tetracycline and sulfamethoxazole, using syringaldehyde as an optimized mediator. Analytical chemistry assessments identified transformation products (TPs) generated in situ from the mixture, revealing three novel transformation pathways. Quantitative structure–activity relationship analysis highlighted two TPs with heightened toxicity and prolonged persistence compared to their parent compound. Furthermore, these TPs exhibited distinct environmental mobility characteristics at the liquid–solid interface. Our combined experimental and computational framework allowed for a systematic screening of pharmaceutical residues, considering aspects such as toxicity, mobility, persistence, bioaccumulation, and removal. This approach has practical implications for prioritizing target pollutants in subsequent monitoring and environmental risk assessments.
{"title":"Assessing the environmental risk potential of transformation byproducts formed during fungal enzymatic treatment of a pharmaceutical mixture","authors":"Seungdae Oh, Hiep T. Nguyen, Kehinde Shola Obayomi, Sharf Ilahi Siddiqui","doi":"10.1016/j.jiec.2024.08.015","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.015","url":null,"abstract":"The present study advances our understanding of the ecological risk potential associated with pharmaceutical mixtures treated with fungal enzymes. We optimized a submerged bioreactor for fungal enzyme production by testing three fungal species and adjusting the organic loading rate and retention time, yielding enzyme activities exceeding 20 U/L. These fungal enzymes effectively reduced the half-lives of tetracycline and sulfamethoxazole to less than 3 hours in a mixture of tetracycline and sulfamethoxazole, using syringaldehyde as an optimized mediator. Analytical chemistry assessments identified transformation products (TPs) generated in situ from the mixture, revealing three novel transformation pathways. Quantitative structure–activity relationship analysis highlighted two TPs with heightened toxicity and prolonged persistence compared to their parent compound. Furthermore, these TPs exhibited distinct environmental mobility characteristics at the liquid–solid interface. Our combined experimental and computational framework allowed for a systematic screening of pharmaceutical residues, considering aspects such as toxicity, mobility, persistence, bioaccumulation, and removal. This approach has practical implications for prioritizing target pollutants in subsequent monitoring and environmental risk assessments.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"26 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-13DOI: 10.1016/j.jiec.2024.08.014
Xianbo Li, Lusong Wang
Transformation of phosphogypsum (PG) into α-hemihydrate gypsum (α-HH) in sodium salt solution is disturbed by the doping of Na, which causes the frost of Na doped α-HH. In this study, the content evolution of Na impurities into α-HH was clarified during the hydrothermal process at 95 ℃, the frost phenomenon of hardened gypsum containing Na impurities was observed and controlled. The results show that increasing the initial NaCl concentration from 5 % to 25 % can promote the phase conversion of PG into α-HH within 30 min, but this will increase the NaO content in the product from 0.08 % to 4.37 %, which is due to the formation of the undesirable phase NaSO·5CaSO·3HO. The content of Na impurities entering α-HH presents a non-linear increase with the NaCl solution concentration and reaction time, which can be well described by Boltzmann function. An obvious frost phenomenon of the hardened plaster of Na doped α-HH can be observed after curing 3 d, and the frost is identified as NaSO. This work further demonstrates the feasibility that the addition of CaCl in NaCl solution is an effective approach to control the doping of Na into α-HH, the NaO content decreases to 0.97 % in the mixed solution of 17.5 % NaCl and 10 % CaCl, this helps to eliminate the frost phenomenon and improve the mechanical strength of α-HH.
磷石膏（PG）在钠盐溶液中转化为α-半水石膏（α-HH）的过程会受到 Na 掺杂的干扰，从而导致 Na 掺杂的α-HH 出现结霜现象。本研究阐明了在 95 ℃ 水热过程中 Na 杂质在 α-HH 中的含量演变，观察并控制了含有 Na 杂质的硬化石膏的结霜现象。结果表明，将初始 NaCl 浓度从 5 % 提高到 25 % 可在 30 分钟内促进 PG 向 α-HH 的相转化，但这会使产品中的 NaO 含量从 0.08 % 增加到 4.37 %，这是由于形成了不良相 NaSO-5CaSO-3HO。进入 α-HH 的 Na 杂质含量随 NaCl 溶液浓度和反应时间呈非线性增加，这可以用波尔兹曼函数很好地描述。掺入 Na 的 α-HH 硬化石膏在固化 3 d 后可观察到明显的结霜现象，经鉴定结霜为 NaSO。这项工作进一步证明了在 NaCl 溶液中添加 CaCl 是控制 Na 掺杂到 α-HH 中的有效方法的可行性，在 17.5 % NaCl 和 10 % CaCl 的混合溶液中，NaO 含量降至 0.97 %，这有助于消除霜冻现象并提高 α-HH 的机械强度。
{"title":"Sodium doping and control during the preparation of α-hemihydrate gypsum in NaCl solution","authors":"Xianbo Li, Lusong Wang","doi":"10.1016/j.jiec.2024.08.014","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.014","url":null,"abstract":"Transformation of phosphogypsum (PG) into α-hemihydrate gypsum (α-HH) in sodium salt solution is disturbed by the doping of Na, which causes the frost of Na doped α-HH. In this study, the content evolution of Na impurities into α-HH was clarified during the hydrothermal process at 95 ℃, the frost phenomenon of hardened gypsum containing Na impurities was observed and controlled. The results show that increasing the initial NaCl concentration from 5 % to 25 % can promote the phase conversion of PG into α-HH within 30 min, but this will increase the NaO content in the product from 0.08 % to 4.37 %, which is due to the formation of the undesirable phase NaSO·5CaSO·3HO. The content of Na impurities entering α-HH presents a non-linear increase with the NaCl solution concentration and reaction time, which can be well described by Boltzmann function. An obvious frost phenomenon of the hardened plaster of Na doped α-HH can be observed after curing 3 d, and the frost is identified as NaSO. This work further demonstrates the feasibility that the addition of CaCl in NaCl solution is an effective approach to control the doping of Na into α-HH, the NaO content decreases to 0.97 % in the mixed solution of 17.5 % NaCl and 10 % CaCl, this helps to eliminate the frost phenomenon and improve the mechanical strength of α-HH.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"19 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-13DOI: 10.1016/j.jiec.2024.08.016
Mukesh Kumar, Manish Kumar Gautam, Kuldeep Singh, Seung Hyun Hur
The novel promising materials of the transition metal carbonitrides, especially MXenes, have been attracting great attention, due to the extraordinary electrochemical and optoelectronic properties of their inorganic 2D layers. However, the potential properties of single-layered MXene nanoflakes, which are crucial, remain unexplored. Restacking of exfoliated MXene nanoflakes, driven by the strong van der Waals interactions, diminishes the surface area, leading to the reduction of ion transport, which results in low charge storage capacity below the theoretical value of 615 C·g or 1200 F·g. In addition, the MXene surface with the most electronegative −F functional groups hinders the ionic transport of electrolytes. The synergistic combination of intrinsically conducting polymers, such as PANI, and the two-dimensional transition metal carbides, MXenes, which can store higher energy, offers better volumetric and areal capacitance resulting in superior pseudocapacitance. Due to the high energy density, exfoliation of polyaniline restricts the restacking of MXene layers, thereby improving the electrochemical performance of the energy storage electrode materials. This review addresses the preparation, and characterization of the MXene-PANI nanohybrids, and their electrochemical behavior as energy storage materials for supercapacitor applications.
{"title":"A comprehensive review of the MXene-PANI nanohybrids: Preparation, characterization, and electrochemical performances for supercapacitor applications","authors":"Mukesh Kumar, Manish Kumar Gautam, Kuldeep Singh, Seung Hyun Hur","doi":"10.1016/j.jiec.2024.08.016","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.016","url":null,"abstract":"The novel promising materials of the transition metal carbonitrides, especially MXenes, have been attracting great attention, due to the extraordinary electrochemical and optoelectronic properties of their inorganic 2D layers. However, the potential properties of single-layered MXene nanoflakes, which are crucial, remain unexplored. Restacking of exfoliated MXene nanoflakes, driven by the strong van der Waals interactions, diminishes the surface area, leading to the reduction of ion transport, which results in low charge storage capacity below the theoretical value of 615 C·g or 1200 F·g. In addition, the MXene surface with the most electronegative −F functional groups hinders the ionic transport of electrolytes. The synergistic combination of intrinsically conducting polymers, such as PANI, and the two-dimensional transition metal carbides, MXenes, which can store higher energy, offers better volumetric and areal capacitance resulting in superior pseudocapacitance. Due to the high energy density, exfoliation of polyaniline restricts the restacking of MXene layers, thereby improving the electrochemical performance of the energy storage electrode materials. This review addresses the preparation, and characterization of the MXene-PANI nanohybrids, and their electrochemical behavior as energy storage materials for supercapacitor applications.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"25 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrochemical sensors are inherently dependent upon novel electrocatalyst materials with excellent properties. A rapid analytical technique was developed to determine 5-aminosalicylic acid (5-ASA) without the need for time-consuming separation steps. In this study, the perovskite-type barium molybdate (BaMoO) nanocubes and phosphorous-doped graphitic carbon nitride (P-gCN) were prepared by coprecipitation followed the chemical vapour deposition method. Various spectroscopic techniques were performed to analyse the morphology and structure of the proposed electrocatalyst (BaMoO/P-gCN). BaMoO/P-gCN modified glassy carbon electrodes (GCE) exhibit superior electrocatalytic activity towards 5-ASA detection over unmodified electrodes. Difference Pulse Voltammetry (DPV) was used under optimal experimental conditions for determining 5-ASA accurately. Combining BaMoO and P-gCN forms an electrocatalytic hybrid composite with a large specific surface area, rapid electron transfer, and high electrical conductivity. BaMoO/P-gCN modified electrodes possess a broad detection range (0.01–723 µM), low limit of detection (4.0 nM), excellent selectivity, sensitivity (1.046 µAµMcm), and good reproducibility toward the detection of 5-ASA. Human serum, urine, and river water samples were successfully tested for 5-ASA content with the electrochemical sensor fabricated.
{"title":"High-temperature assisted barium molybdate incorporation into heteroatom-doped porous carbon sheets for selective detection of sulfonamide derivatives","authors":"Ajith Velraj, Saranvignesh Alagarsamy, Shen-Ming Chen","doi":"10.1016/j.jiec.2024.08.013","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.013","url":null,"abstract":"Electrochemical sensors are inherently dependent upon novel electrocatalyst materials with excellent properties. A rapid analytical technique was developed to determine 5-aminosalicylic acid (5-ASA) without the need for time-consuming separation steps. In this study, the perovskite-type barium molybdate (BaMoO) nanocubes and phosphorous-doped graphitic carbon nitride (P-gCN) were prepared by coprecipitation followed the chemical vapour deposition method. Various spectroscopic techniques were performed to analyse the morphology and structure of the proposed electrocatalyst (BaMoO/P-gCN). BaMoO/P-gCN modified glassy carbon electrodes (GCE) exhibit superior electrocatalytic activity towards 5-ASA detection over unmodified electrodes. Difference Pulse Voltammetry (DPV) was used under optimal experimental conditions for determining 5-ASA accurately. Combining BaMoO and P-gCN forms an electrocatalytic hybrid composite with a large specific surface area, rapid electron transfer, and high electrical conductivity. BaMoO/P-gCN modified electrodes possess a broad detection range (0.01–723 µM), low limit of detection (4.0 nM), excellent selectivity, sensitivity (1.046 µAµMcm), and good reproducibility toward the detection of 5-ASA. Human serum, urine, and river water samples were successfully tested for 5-ASA content with the electrochemical sensor fabricated.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"13 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The hydroandradite (HA) is an efficient and ideal desilication product to deal with the bauxite and red mud based on the alkali-thermal process, while the selection of iron source is crucial for the HA generation. This work investigates the effects of various natural iron minerals on the alkali-thermal formation HA in aluminate solution by comparing with synthetic sodium ferrate. The Gibbs free energy changes of HA formation with different iron oxides were calculated based on the complex silicate theory, and the preferential conversion order for HA formation was obtained thermodynamically. The solubility data of various iron minerals in aluminate solution were determined and correlated by the Apelblat model. The contribution order of iron minerals for HA formation was obtained, and the goethite is the best alternative to replace sodium ferrite by comparing to hematite and magnetite. The phase transformation of HA is above 80% in the presence of goethite, and the alkali content in reaction product is as low as 0.20%. Moreover, the effect mechanism of goethite on HA formation was discussed and established.
氢烛石（HA）是基于碱热法处理铝土矿和赤泥的一种高效、理想的脱硅产品，而铁源的选择对氢烛石的生成至关重要。本研究通过与合成铁酸钠进行比较，研究了各种天然铁矿物对铝酸盐溶液中碱热法生成 HA 的影响。根据复合硅酸盐理论计算了不同氧化铁形成 HA 的吉布斯自由能变化，并从热力学角度得出了 HA 形成的优先转化顺序。确定了各种铁矿物在铝酸盐溶液中的溶解度数据，并通过阿佩尔布拉特模型进行了相关分析。得出了铁矿物对 HA 形成的贡献顺序，与赤铁矿和磁铁矿相比，鹅铁矿是替代钠铁矿的最佳选择。在鹅铁矿存在的情况下，HA 的相变率在 80% 以上，反应产物中的碱含量低至 0.20%。此外，还讨论并确定了鹅铁矿对 HA 形成的影响机制。
{"title":"Effect of iron minerals on formation of hydroandradite during alkali-thermal process","authors":"Jilong Liu, Xiaolin Pan, Hongfei Wu, Feng Qiu, Haiyan Yu","doi":"10.1016/j.jiec.2024.08.010","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.010","url":null,"abstract":"The hydroandradite (HA) is an efficient and ideal desilication product to deal with the bauxite and red mud based on the alkali-thermal process, while the selection of iron source is crucial for the HA generation. This work investigates the effects of various natural iron minerals on the alkali-thermal formation HA in aluminate solution by comparing with synthetic sodium ferrate. The Gibbs free energy changes of HA formation with different iron oxides were calculated based on the complex silicate theory, and the preferential conversion order for HA formation was obtained thermodynamically. The solubility data of various iron minerals in aluminate solution were determined and correlated by the Apelblat model. The contribution order of iron minerals for HA formation was obtained, and the goethite is the best alternative to replace sodium ferrite by comparing to hematite and magnetite. The phase transformation of HA is above 80% in the presence of goethite, and the alkali content in reaction product is as low as 0.20%. Moreover, the effect mechanism of goethite on HA formation was discussed and established.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"45 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-10DOI: 10.1016/j.jiec.2024.08.002
Abdelfattah Amari , Hakim S. Sultan Aljibori , Zaina Algarni , Noureddine Elboughdiri , M.A. Diab , Kwang-Hyun Baek , Ibrahim Mahariq
The degradation of pollutants and reduction of CO2 to hydrocarbon fuels using photocatalysis is a potential approach to reducing CO2 emissions and decreasing environmental contamination. This study introduces an innovative S-scheme photocatalyst (Fe2O3/Bi2O3/g-C3N4) synthesized through simple methods for the first time. The structural, morphological, and optical properties of the synthesized photocatalysts were comprehensively characterized using XRD, XPS, FTIR, SEM, TEM, HR-TEM, BET, UV–vis DRS, PL, ESR, and mott-Schottky analyses, respectively. The visible light photodegradation of tetracycline (TC) antibiotic and CO2 conversion were carried out in order to evaluate the photocatalytic performance of these synthesized materials. Using the RSM-CCD approach, the influence of key variables on TC degradation were optimized. The results indicated that the optimized photocatalyst (45-FeBiC) exhibited higher photocatalytic performance (99.87 %) compared to other samples via photogenerated •O2−, and •OH. Additionally, four cycle studies verified that the 45-FeBiC nanocomposite had adequate photostability. After 6 h of visible light illumination, the 45-FeBiC catalyst generated 33.84 μmol/g of CO and maintained 96.2 % of its initial photocatalytic activity after 30 h of reaction. The enhanced photocatalytic efficiency of the 45-FeBiC nanocomposite is attributed to the photosensitization effect of 3 wt%-Fe2O3/Bi2O3 on g-C3N4 within the S-scheme photocatalytic framework.
{"title":"A novel S-scheme photocatalyst Fe2O3/Bi2O3/g-C3N4 with enhanced visible-light photocatalytic performance for antibiotic degradation and CO2 reduction: RSM-based optimization","authors":"Abdelfattah Amari , Hakim S. Sultan Aljibori , Zaina Algarni , Noureddine Elboughdiri , M.A. Diab , Kwang-Hyun Baek , Ibrahim Mahariq","doi":"10.1016/j.jiec.2024.08.002","DOIUrl":"10.1016/j.jiec.2024.08.002","url":null,"abstract":"<div><div>The degradation of pollutants and reduction of CO<sub>2</sub> to hydrocarbon fuels using photocatalysis is a potential approach to reducing CO<sub>2</sub> emissions and decreasing environmental contamination. This study introduces an innovative S-scheme photocatalyst (Fe<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>3</sub>/g-C<sub>3</sub>N<sub>4</sub>) synthesized through simple methods for the first time. The structural, morphological, and optical properties of the synthesized photocatalysts were comprehensively characterized using XRD, XPS, FTIR, SEM, TEM, HR-TEM, BET, UV–vis DRS, PL, ESR, and mott-Schottky analyses, respectively. The visible light photodegradation of tetracycline (TC) antibiotic and CO<sub>2</sub> conversion were carried out in order to evaluate the photocatalytic performance of these synthesized materials. Using the RSM-CCD approach, the influence of key variables on TC degradation were optimized. The results indicated that the optimized photocatalyst (45-FeBiC) exhibited higher photocatalytic performance (99.87 %) compared to other samples via photogenerated •O<sub>2</sub><sup>−</sup>, and •OH. Additionally, four cycle studies verified that the 45-FeBiC nanocomposite had adequate photostability. After 6 h of visible light illumination, the 45-FeBiC catalyst generated 33.84 μmol/g of CO and maintained 96.2 % of its initial photocatalytic activity after 30 h of reaction. The enhanced photocatalytic efficiency of the 45-FeBiC nanocomposite is attributed to the photosensitization effect of 3 wt%-Fe<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>3</sub> on g-C<sub>3</sub>N<sub>4</sub> within the S-scheme photocatalytic framework.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"140 ","pages":"Pages 599-616"},"PeriodicalIF":5.9,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-10DOI: 10.1016/j.jiec.2024.07.063
Jyoti Duhan, Sangeeta Obrai
In this study we have developed a highly sensitive optical sensor for the detection of epinephrine using carbon dots co-doped with samarium and nitrogen (Sm,N-CDs) with a very low detection limit of 28.1 nM and a broad linear dynamic range from (0–105 nM). Various techniques were employed to characterize the synthesized material, aiming to understand its morphological and physicochemical characteristics. The synergistic effect of the synthesized Sm,N-CDs demonstrated excellent optical performance, high selectivity and photostability. Additionally, good recovery findings were obtained when the sensor’s viability for Epinephrine detection in biological fluid samples that had been spiked was evaluated. In addition, we have developed an smartphones-based sensor to record the solution’s fluorescent color shift as it is being sensed. Using a mobile phone application to examine the green, red, and blue values from these photos, the comparable LOD was found to be 17.21 μM in a (0–90 μM) wide linear range of concentration. This straightforward, affordable, and quick screening device is highly demanding for the on-the-spot identification of the analytes at remote locations where advanced instrumentation is typically unavailable. Density functional theory was used to examine energy, stability, band gap, and how Ep interacted with the Sm,N-CDs nanoparticles.
{"title":"Samarium, nitrogen co-Doped carbon dots for detection of Epinephrine: Theoretical and experimental","authors":"Jyoti Duhan, Sangeeta Obrai","doi":"10.1016/j.jiec.2024.07.063","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.07.063","url":null,"abstract":"In this study we have developed a highly sensitive optical sensor for the detection of epinephrine using carbon dots co-doped with samarium and nitrogen (Sm,N-CDs) with a very low detection limit of 28.1 nM and a broad linear dynamic range from (0–105 nM). Various techniques were employed to characterize the synthesized material, aiming to understand its morphological and physicochemical characteristics. The synergistic effect of the synthesized Sm,N-CDs demonstrated excellent optical performance, high selectivity and photostability. Additionally, good recovery findings were obtained when the sensor’s viability for Epinephrine detection in biological fluid samples that had been spiked was evaluated. In addition, we have developed an smartphones-based sensor to record the solution’s fluorescent color shift as it is being sensed. Using a mobile phone application to examine the green, red, and blue values from these photos, the comparable LOD was found to be 17.21 μM in a (0–90 μM) wide linear range of concentration. This straightforward, affordable, and quick screening device is highly demanding for the on-the-spot identification of the analytes at remote locations where advanced instrumentation is typically unavailable. Density functional theory was used to examine energy, stability, band gap, and how Ep interacted with the Sm,N-CDs nanoparticles.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"24 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141915166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-10DOI: 10.1016/j.jiec.2024.08.007
Mehak Bansal, Bonamali Pal
Excess nitrate and nitrite ions are harmful contaminants for groundwater and surface waters, disrupting biological balance. In this study, Mg-Al layered double hydroxide modified by chitosan spheres (CS@LDH) is used for ion adsorption and studied composites’ structural and morphological features using XRD, HR-TEM, FE-SEM, and XPS. The CS@LDH composite’s positive zeta potential (38.42 mV) and larger surface area (84.62 m/g) aid absorb negatively charged ions. With optimised 3 mg CS@LDH in 10 mL (30 mg/L) of nitrate ion concentration at optimum pH 4, the maximum adsorption capacity was 98.7 % in 90 min at 298 K. The Langmuir isotherm study indicated that nitrate ions had a maximum adsorption capacity of 2026.7 mg/g and nitrite ions 1086.8 mg/g. SEM pictures validate the heterogeneous adsorption features of CS@LDH composites. According to the pseudo-first-order kinetics model (k = 6.4 × 10 min, R 1), physisorption is the rate-limiting phase. Elovich kinetic studies show active adsorption without product desorption. Experimental and characterization investigations confirmed the CS@LDH nitrate adsorption mechanism. CS@LDH removed nitrates from real-life wastewater, and within three hours, NO was below drinking water safety levels. The combination of naturally occurring biopolymers and double-layered hydroxides in this research might remove numerous harmful pollutants from wastewater.
{"title":"Enhanced elimination of nitrate and nitrite ions from ground and surface wastewater using chitosan sphere-modified Mg-Al layered double hydroxide composite","authors":"Mehak Bansal, Bonamali Pal","doi":"10.1016/j.jiec.2024.08.007","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.007","url":null,"abstract":"Excess nitrate and nitrite ions are harmful contaminants for groundwater and surface waters, disrupting biological balance. In this study, Mg-Al layered double hydroxide modified by chitosan spheres (CS@LDH) is used for ion adsorption and studied composites’ structural and morphological features using XRD, HR-TEM, FE-SEM, and XPS. The CS@LDH composite’s positive zeta potential (38.42 mV) and larger surface area (84.62 m/g) aid absorb negatively charged ions. With optimised 3 mg CS@LDH in 10 mL (30 mg/L) of nitrate ion concentration at optimum pH 4, the maximum adsorption capacity was 98.7 % in 90 min at 298 K. The Langmuir isotherm study indicated that nitrate ions had a maximum adsorption capacity of 2026.7 mg/g and nitrite ions 1086.8 mg/g. SEM pictures validate the heterogeneous adsorption features of CS@LDH composites. According to the pseudo-first-order kinetics model (k = 6.4 × 10 min, R 1), physisorption is the rate-limiting phase. Elovich kinetic studies show active adsorption without product desorption. Experimental and characterization investigations confirmed the CS@LDH nitrate adsorption mechanism. CS@LDH removed nitrates from real-life wastewater, and within three hours, NO was below drinking water safety levels. The combination of naturally occurring biopolymers and double-layered hydroxides in this research might remove numerous harmful pollutants from wastewater.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"266 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-09DOI: 10.1016/j.jiec.2024.08.009
Thomas J. Robshaw, James P. Bezzina, Robert Dawson, Mark D. Ogden
There is an urgent global need to work toward closure of the phosphate recycling loop. One possible pathway is investigation of use of sewage sludge in lieu of commercial fertilisers. This necessitates removal of the problematic heavy metals therein. This study investigates abatement of copper, iron(II), lead and zinc, after leaching with citric acid, with a commercially-available chelating ion-exchange resin (Purolite MTS9301). Key parameters investigated include citric acid concentration, equilibrium metal uptake, kinetic metal uptake and aqueous speciation (predicted by the HySS computer programme). Equilibrium data were fitted to a number of common isotherm models, including a version of the Langmuir, modified to account for desorption in a competitive system. This model proved most capable of fitting the data and the derived maximal adsorption capacities in the multi-metal system were 1.81 ± 0.06, 0.8 ± 0.1 and 0.44 ± 0.02 mmol g for Cu, Pb and Zn respectively. Kinetic data were likewise fitted to widely-used models and the pseudo second-order (PSO) model most adequately described the data. The adsorption half-lives were calculated as 12.7 ± 0.7, 32 ± 4 and 31 ± 2 min for Cu, Pb and Zn. Fe(II) data could not be reliably modelled, due to the very low affinity for the resin. The order of selectivity across all experiments was clearly established as Cu > Pb ∼ Zn ≫ Fe. Generally, quantities and rapidity of uptake was superior in the citric acid leachate than for the same resin in the equivalent acetic acid leachate. Further advantages are lower required lixiviant concentration, reduced toxicity and more sustainable manufacture. Overall, the citric acid/ MTS9301 combination showed considerable potential in the management of three key heavy metals in sewage sludge.
{"title":"Towards phosphate loop closure by sustainable remediation of sewage sludge: Removal of divalent metals from citric acid leachate with a chelating iminodiacetic acid resin","authors":"Thomas J. Robshaw, James P. Bezzina, Robert Dawson, Mark D. Ogden","doi":"10.1016/j.jiec.2024.08.009","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.009","url":null,"abstract":"There is an urgent global need to work toward closure of the phosphate recycling loop. One possible pathway is investigation of use of sewage sludge in lieu of commercial fertilisers. This necessitates removal of the problematic heavy metals therein. This study investigates abatement of copper, iron(II), lead and zinc, after leaching with citric acid, with a commercially-available chelating ion-exchange resin (Purolite MTS9301). Key parameters investigated include citric acid concentration, equilibrium metal uptake, kinetic metal uptake and aqueous speciation (predicted by the HySS computer programme). Equilibrium data were fitted to a number of common isotherm models, including a version of the Langmuir, modified to account for desorption in a competitive system. This model proved most capable of fitting the data and the derived maximal adsorption capacities in the multi-metal system were 1.81 ± 0.06, 0.8 ± 0.1 and 0.44 ± 0.02 mmol g for Cu, Pb and Zn respectively. Kinetic data were likewise fitted to widely-used models and the pseudo second-order (PSO) model most adequately described the data. The adsorption half-lives were calculated as 12.7 ± 0.7, 32 ± 4 and 31 ± 2 min for Cu, Pb and Zn. Fe(II) data could not be reliably modelled, due to the very low affinity for the resin. The order of selectivity across all experiments was clearly established as Cu > Pb ∼ Zn ≫ Fe. Generally, quantities and rapidity of uptake was superior in the citric acid leachate than for the same resin in the equivalent acetic acid leachate. Further advantages are lower required lixiviant concentration, reduced toxicity and more sustainable manufacture. Overall, the citric acid/ MTS9301 combination showed considerable potential in the management of three key heavy metals in sewage sludge.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"641 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-08DOI: 10.1016/j.jiec.2024.07.048
Nguyen Huu Hieu , Phan Minh Tu , Nguyen Hoang Kim Duyen , Cao Vu Lam , Dang Ngoc Chau Vy , Ta Dang Khoa , Nguyen Truong Son , Vo Nguyen Dai Viet , Pham Trong Liem Chau
{"title":"Corrigendum to “Zn-doped aerogel for Ni2+ adsorption (Zn-A-Ni) and reuse of Zn-A-Ni to create Zn, Ni-co-doped carbon aerogel for applications in adsorption and energy storage” [J. Ind. Eng. Chem. (2024) 7534]","authors":"Nguyen Huu Hieu , Phan Minh Tu , Nguyen Hoang Kim Duyen , Cao Vu Lam , Dang Ngoc Chau Vy , Ta Dang Khoa , Nguyen Truong Son , Vo Nguyen Dai Viet , Pham Trong Liem Chau","doi":"10.1016/j.jiec.2024.07.048","DOIUrl":"10.1016/j.jiec.2024.07.048","url":null,"abstract":"","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"139 ","pages":"Page 630"},"PeriodicalIF":5.9,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1226086X24004933/pdfft?md5=a49c31040455a4954cdadfadf60282ff&pid=1-s2.0-S1226086X24004933-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：