The corrosion of steel construction in marine environments faces severe corrosion threats, and coatings based on nanofillers are an effective strategy for steel corrosion protection. However, the related studies of the anti-corrosion coatings based on quantum dots are still poor. In this work, CuS and ZnS quantum dots (QD) were initially synthesized, and epoxy resin (EP) coatings containing QD with ratios of 0.05 wt%, 0.1 wt%, 0.2 wt%, and 0.5 wt% were successfully prepared subsequently. Surface analysis, electrochemical measurements, salt spray tests, and mechanical tensile tests were performed to characterize the prepared quantum dots and study the anti-corrosion behavior and mechanism of the prepared coatings. Results indicated that the prepared CuS and ZnS quantum dots have small sizes with values of 13.8 and 8.9 nm, respectively. Compared to the pure EP coating, QD-EP coatings have a higher mechanical strength and toughness which is conducive to improving the coatings’ corrosion resistance and service life. The impedance values of all the QD-EP coatings increase by more than three orders of magnitude in contrast to pure EP coating after 60 d of testing. Furthermore, the prepared QD-EP coatings possess a long-term anti-corrosion property.
{"title":"Study of anti-corrosion epoxy resin coatings with high corrosion resistance and mechanical performance based on quantum dots","authors":"Haixian Liu, Zhengyu Jin, Jiaping Wang, Lifang Wang, Hongfang Liu, Hongwei Liu","doi":"10.1016/j.jiec.2024.08.053","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.053","url":null,"abstract":"The corrosion of steel construction in marine environments faces severe corrosion threats, and coatings based on nanofillers are an effective strategy for steel corrosion protection. However, the related studies of the anti-corrosion coatings based on quantum dots are still poor. In this work, CuS and ZnS quantum dots (QD) were initially synthesized, and epoxy resin (EP) coatings containing QD with ratios of 0.05 wt%, 0.1 wt%, 0.2 wt%, and 0.5 wt% were successfully prepared subsequently. Surface analysis, electrochemical measurements, salt spray tests, and mechanical tensile tests were performed to characterize the prepared quantum dots and study the anti-corrosion behavior and mechanism of the prepared coatings. Results indicated that the prepared CuS and ZnS quantum dots have small sizes with values of 13.8 and 8.9 nm, respectively. Compared to the pure EP coating, QD-EP coatings have a higher mechanical strength and toughness which is conducive to improving the coatings’ corrosion resistance and service life. The impedance values of all the QD-EP coatings increase by more than three orders of magnitude in contrast to pure EP coating after 60 d of testing. Furthermore, the prepared QD-EP coatings possess a long-term anti-corrosion property.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227911","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 : 2024-08-29DOI: 10.1016/j.jiec.2024.08.043
Pedram Kalhori, Ahmad Abbasi, M. Reza Malayeri
Acid stimulation has proved efficacy in improving the production of crude oil; however, inappropriate design of acid job can lead to a new type of formation damage, including rigid film acid-crude oil emulsion and acid-induced sludge formation, which are caused due to incompatibility of the injected acid and the crude oil. A variety of influential parameters on the amount of formed acid-induced sludge have been identified including crude oil properties and its components, injected acid concentration and its type, iron ions presence, volumetric ratio of acid and crude oil, chemical additives, and temperature. It is indispensable to examine reliably the potential damage relating to reservoir conditions and to adjust the operating conditions of injection process for an appropriate acid job. It has been endeavored in this paper to provide a comprehensive review of acid-induced sludge, its formation and underlying mechanisms, dominant parameters such as the properties of aqueous and organic phases, operating conditions, experimental methods for sludge evaluation and their challenges, and finally approaches to prevent sludge formation. Thorough analysis of these parameters would serve as a guideline for the production engineers to minimize the operating costs and to improve the acid job effectiveness.
{"title":"A review of acid-induced sludge formation and dominant parameters","authors":"Pedram Kalhori, Ahmad Abbasi, M. Reza Malayeri","doi":"10.1016/j.jiec.2024.08.043","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.043","url":null,"abstract":"Acid stimulation has proved efficacy in improving the production of crude oil; however, inappropriate design of acid job can lead to a new type of formation damage, including rigid film acid-crude oil emulsion and acid-induced sludge formation, which are caused due to incompatibility of the injected acid and the crude oil. A variety of influential parameters on the amount of formed acid-induced sludge have been identified including crude oil properties and its components, injected acid concentration and its type, iron ions presence, volumetric ratio of acid and crude oil, chemical additives, and temperature. It is indispensable to examine reliably the potential damage relating to reservoir conditions and to adjust the operating conditions of injection process for an appropriate acid job. It has been endeavored in this paper to provide a comprehensive review of acid-induced sludge, its formation and underlying mechanisms, dominant parameters such as the properties of aqueous and organic phases, operating conditions, experimental methods for sludge evaluation and their challenges, and finally approaches to prevent sludge formation. Thorough analysis of these parameters would serve as a guideline for the production engineers to minimize the operating costs and to improve the acid job effectiveness.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211204","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}
This dairy industry has grown considerably in the last decade to meet the increasing requirements of the ever-rising human population. Large volumes of solid waste are generated during the processing of dairy wastewater, known as dairy processing sludge (DPS). Organic and inorganic chemicals, carbon, nitrogen, phosphorus, chlorides, sulfides, fats, oils, and grease comprise most of the DPS. Discharging untreated DPS into surrounding water sources harms the environment because of its elevated organic contents. Alternatively, the DPS can potentially be transformed into struvite, char, and ash with some fertilizer equivalence values. DPS contains heavy metals, pathogens, and synthetic organic compounds (hormones and pesticides) and requires pretreatment before its direct application as a fertilizer equivalent. DPS can be effectively treated by non-conventional methods, such as earthworms converting it into nutrient-rich fertilizer. Moreover, circular economy principles can be fulfilled by recycling DPS into value-added products, such as bacterial growth media for rhizobia, stabilizing contaminated soil for growing biofuel plants (e.g., ), and further used as a potential substrate for biodiesel production. This review elucidates the generation, composition, treatments, and opportunities for reusing DPS in a sustainable and eco-friendly manner that minimizes environmental pollution and identifies important future research prospects.
{"title":"A review on generation, composition, and valorization of dairy processing sludge: A circular economy-based sustainable approach","authors":"Jyotishikha Mohapatra, Ramesh Kumar, Bikram Basak, Rijuta Ganesh Saratale, Ganesh Dattatraya Saratale, Amrita Mishra, Suraj K. Tripathy, Byong-Hun Jeon, Sankha Chakrabortty","doi":"10.1016/j.jiec.2024.08.045","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.045","url":null,"abstract":"This dairy industry has grown considerably in the last decade to meet the increasing requirements of the ever-rising human population. Large volumes of solid waste are generated during the processing of dairy wastewater, known as dairy processing sludge (DPS). Organic and inorganic chemicals, carbon, nitrogen, phosphorus, chlorides, sulfides, fats, oils, and grease comprise most of the DPS. Discharging untreated DPS into surrounding water sources harms the environment because of its elevated organic contents. Alternatively, the DPS can potentially be transformed into struvite, char, and ash with some fertilizer equivalence values. DPS contains heavy metals, pathogens, and synthetic organic compounds (hormones and pesticides) and requires pretreatment before its direct application as a fertilizer equivalent. DPS can be effectively treated by non-conventional methods, such as earthworms converting it into nutrient-rich fertilizer. Moreover, circular economy principles can be fulfilled by recycling DPS into value-added products, such as bacterial growth media for rhizobia, stabilizing contaminated soil for growing biofuel plants (e.g., ), and further used as a potential substrate for biodiesel production. This review elucidates the generation, composition, treatments, and opportunities for reusing DPS in a sustainable and eco-friendly manner that minimizes environmental pollution and identifies important future research prospects.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227913","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 : 2024-08-28DOI: 10.1016/j.jiec.2024.08.048
João Lameu da Silva Jr., Harrson Silva Santana, Maximilian Joachim Hodapp
Microreactor Technology (MRT) represents a significant leap forward in chemical process intensification (PI), offering distinct advantages over conventional macroscale methods. The utilization of microfluidic reactors for PI has transformed various industries by enabling efficient handling of reactions and precise control of operating conditions, by advantages encompassing the reduced consumption of samples, reactants and catalysts, enhancement of heat and mass transfer rates, inherent from the high surface area to volume ratio. Despite the advances in the field, challenges remain, particularly concerning the manufacturing costs associated with scale-up and numbering-up, especially in catalytic processes. Effectively transitioning from microscale to industrial-scale production demands careful Research and Development (R&D) and innovative strategies to preserve the enhanced mixing and reaction capabilities inherent to microscale technologies. The scale-up of catalytic processes using microfluidic-based devices introduces distinct challenges, including managing heat transfer and ensuring optimal flow distribution. This review addressed promising developments in critical strategies to overcoming these challenges, such as the optimization of reactor block and flow distributors that can be initially performed by Computational Fluid Dynamics (CFD). Moreover, achieving effective thermal management in microreactor systems necessitates a balance between heat removal from reactors and minimizing heat dissipation into the surroundings. Innovative techniques such as 3D printing for customizable designs, coupled with numerical simulations to refine geometries, play fundamental roles in overcoming these challenges. MRT alongside innovation in the catalyst field holds great potential in the application of microfluidic-based devices in PI of catalytic processes and can contribute significantly for more sustainable processes.
微反应器技术（MRT）是化学过程强化（PI）领域的一次重大飞跃，与传统的宏观方法相比具有明显的优势。利用微流体反应器进行 PI 已改变了各行各业，它可以高效处理反应和精确控制操作条件，其优势包括减少样品、反应物和催化剂的消耗，提高传热和传质速率，这些都是高表面积与体积比所固有的。尽管在该领域取得了进步，但挑战依然存在，特别是与放大和编号相关的制造成本，尤其是在催化过程中。要有效地从微米级生产过渡到工业级生产，就必须进行精心的研究与开发（R&D），并采取创新战略，以保持微米级技术固有的增强混合和反应能力。使用基于微流控装置的催化过程放大带来了独特的挑战，包括管理热传递和确保最佳流量分布。本综述探讨了克服这些挑战的关键策略的发展前景，如反应器区块和流动分布器的优化，最初可通过计算流体动力学（CFD）来实现。此外，要在微反应器系统中实现有效的热管理，必须在反应器排热和尽量减少向周围散热之间取得平衡。用于定制设计的 3D 打印等创新技术，以及用于完善几何形状的数值模拟，在克服这些挑战方面发挥着根本性的作用。MRT 与催化剂领域的创新一起，在催化过程的 PI 中应用基于微流体的设备方面具有巨大潜力，并能为更可持续的过程做出重大贡献。
{"title":"Microreactor technology applied to catalytic processing of Hydrogen: A review","authors":"João Lameu da Silva Jr., Harrson Silva Santana, Maximilian Joachim Hodapp","doi":"10.1016/j.jiec.2024.08.048","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.048","url":null,"abstract":"Microreactor Technology (MRT) represents a significant leap forward in chemical process intensification (PI), offering distinct advantages over conventional macroscale methods. The utilization of microfluidic reactors for PI has transformed various industries by enabling efficient handling of reactions and precise control of operating conditions, by advantages encompassing the reduced consumption of samples, reactants and catalysts, enhancement of heat and mass transfer rates, inherent from the high surface area to volume ratio. Despite the advances in the field, challenges remain, particularly concerning the manufacturing costs associated with scale-up and numbering-up, especially in catalytic processes. Effectively transitioning from microscale to industrial-scale production demands careful Research and Development (R&D) and innovative strategies to preserve the enhanced mixing and reaction capabilities inherent to microscale technologies. The scale-up of catalytic processes using microfluidic-based devices introduces distinct challenges, including managing heat transfer and ensuring optimal flow distribution. This review addressed promising developments in critical strategies to overcoming these challenges, such as the optimization of reactor block and flow distributors that can be initially performed by Computational Fluid Dynamics (CFD). Moreover, achieving effective thermal management in microreactor systems necessitates a balance between heat removal from reactors and minimizing heat dissipation into the surroundings. Innovative techniques such as 3D printing for customizable designs, coupled with numerical simulations to refine geometries, play fundamental roles in overcoming these challenges. MRT alongside innovation in the catalyst field holds great potential in the application of microfluidic-based devices in PI of catalytic processes and can contribute significantly for more sustainable processes.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211246","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 : 2024-08-27DOI: 10.1016/j.jiec.2024.08.038
Meriem Kemel
{"title":"Eco-friendly corrosion inhibition of steel using phenolic compounds from Cynara syriaca","authors":"Meriem Kemel","doi":"10.1016/j.jiec.2024.08.038","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.038","url":null,"abstract":"","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211206","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 : 2024-08-26DOI: 10.1016/j.jiec.2024.08.041
Imteaz Ahmed, Sung Hwa Jhung
A microporous covalent-organic polymer (triazine polymer, referred to as MCTP), was synthesized and subsequently carbonized, after loading urea and KOH (serving as an additional nitrogen source and activator, respectively), through high-temperature pyrolysis. This process resulted in materials named KUCDCs, which exhibited high porosity and a broader range of pore sizes compared to carbon materials produced without the addition of urea and KOH, referred to as CDC. KUCDCs, CDC, and commercially available activated carbon (AC) were evaluated for their ability to remove sulfonamide drugs, sulfamethoxazole (SMX) and sulfachlorpyridazine (SCP), from aqueous solution. Among these materials, KUCDC-800, which was carbonized at a temperature of 800 °C, demonstrated superior adsorption performances for sulfonamides, attributed to its high porosity, nitrogen content, and presence of surface oxygen groups. The adsorption capacities for SMX and SCP on KUCDC were notably higher than those on AC and MDC, with maximum capacities () of 619 and 554 mg/g for SMX and SCP, respectively. Notably, KUCDC-800 stands out as a recyclable adsorbent with the highest reported for SMX to date under near-neutral conditions. The exceptional performance of KUCDC in adsorbing SMX could be explained by its high porosity and surface functionalities for hydrogen bonding interactions with the adsorbate.
{"title":"Nanoarchitectonics of porous carbon derived from urea-impregnated microporous triazine polymer in KOH activator for adsorptive removal of sulfonamides from water","authors":"Imteaz Ahmed, Sung Hwa Jhung","doi":"10.1016/j.jiec.2024.08.041","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.041","url":null,"abstract":"A microporous covalent-organic polymer (triazine polymer, referred to as MCTP), was synthesized and subsequently carbonized, after loading urea and KOH (serving as an additional nitrogen source and activator, respectively), through high-temperature pyrolysis. This process resulted in materials named KUCDCs, which exhibited high porosity and a broader range of pore sizes compared to carbon materials produced without the addition of urea and KOH, referred to as CDC. KUCDCs, CDC, and commercially available activated carbon (AC) were evaluated for their ability to remove sulfonamide drugs, sulfamethoxazole (SMX) and sulfachlorpyridazine (SCP), from aqueous solution. Among these materials, KUCDC-800, which was carbonized at a temperature of 800 °C, demonstrated superior adsorption performances for sulfonamides, attributed to its high porosity, nitrogen content, and presence of surface oxygen groups. The adsorption capacities for SMX and SCP on KUCDC were notably higher than those on AC and MDC, with maximum capacities () of 619 and 554 mg/g for SMX and SCP, respectively. Notably, KUCDC-800 stands out as a recyclable adsorbent with the highest reported for SMX to date under near-neutral conditions. The exceptional performance of KUCDC in adsorbing SMX could be explained by its high porosity and surface functionalities for hydrogen bonding interactions with the adsorbate.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211212","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 : 2024-08-26DOI: 10.1016/j.jiec.2024.08.042
W. Ettahiri, A. El Moutaouakil Ala Allah, J. Lazrak, E.H. Safir, K.K. Yadav, B. Hammouti, A.J. Obaidullah, Z. Rais, Y. Ramli, M. Taleb
This study investigates the corrosion inhibition properties of two newly synthesized namely (E)-2-(2-benzylidenehydrazineyl)-5,5-diphenyl-3,5-dihydro--imidazol-4-one denoted and (E)-2-(2-(4-methylbenzylidene)hydrazineyl)-5,5-diphenyl-3,5-dihydro--imidazol-4-one denoted , on mild steel (MS) in a 1 M HCl solution. These compounds demonstrated high inhibition efficiencies of 98.3 % and 98.7 %, respectively. Structural characterization was performed using FT-IR, H NMR, C NMR, and HRMS-ESI. Theoretical evaluations indicated high reactivity and potent inhibition capacity. Electrochemical tests confirmed a concentration-dependent inhibition effectiveness up to 328 K. Adsorption studies suggested that the compounds displace water molecules to form an adsorbed protective layer. Microscopy analysis provided insights into the corrosion inhibition mechanisms, confirming the formation of protective layers and iron/inhibitor complexes. Further molecular structure analysis using Monte Carlo (MC) simulations and density functional theory (DFT) calculations elucidated the structural features contributing to the compounds’ effective corrosion inhibition properties.
{"title":"Synthesis, characterization, theoretical, and experimental evaluation of novel imidazolone − based compounds as eco-friendly corrosion inhibitors for mild steel","authors":"W. Ettahiri, A. El Moutaouakil Ala Allah, J. Lazrak, E.H. Safir, K.K. Yadav, B. Hammouti, A.J. Obaidullah, Z. Rais, Y. Ramli, M. Taleb","doi":"10.1016/j.jiec.2024.08.042","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.042","url":null,"abstract":"This study investigates the corrosion inhibition properties of two newly synthesized namely (E)-2-(2-benzylidenehydrazineyl)-5,5-diphenyl-3,5-dihydro--imidazol-4-one denoted and (E)-2-(2-(4-methylbenzylidene)hydrazineyl)-5,5-diphenyl-3,5-dihydro--imidazol-4-one denoted , on mild steel (MS) in a 1 M HCl solution. These compounds demonstrated high inhibition efficiencies of 98.3 % and 98.7 %, respectively. Structural characterization was performed using FT-IR, H NMR, C NMR, and HRMS-ESI. Theoretical evaluations indicated high reactivity and potent inhibition capacity. Electrochemical tests confirmed a concentration-dependent inhibition effectiveness up to 328 K. Adsorption studies suggested that the compounds displace water molecules to form an adsorbed protective layer. Microscopy analysis provided insights into the corrosion inhibition mechanisms, confirming the formation of protective layers and iron/inhibitor complexes. Further molecular structure analysis using Monte Carlo (MC) simulations and density functional theory (DFT) calculations elucidated the structural features contributing to the compounds’ effective corrosion inhibition properties.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227914","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 : 2024-08-25DOI: 10.1016/j.jiec.2024.08.033
Irfan Wazeer, Lahssen El blidi, Sarwono Mulyono, Ahmed Halilu, Hanee Farzana Hizaddin, Mohd Ali Hashim, Mohamed K. Hadj-Kali
In this study, a total of eight hydrophobic deep eutectic solvents (HDESs) were prepared and evaluated for their efficacy in extracting lead and cadmium from aqueous solutions. The physical and thermal properties of these HDESs were characterized. Among the HDESs tested, the thymol:decanoic acid system, with a molar ratio of 1:1, exhibited the highest distribution ratios for lead and cadmium, with values of 0.79 and 0.55, respectively. The extraction performance of the thymol:decanoic acid system was further investigated by considering various factors such as contact time, pH, mass ratio of water to HDES, and HDES molar ratio. After optimization, the thymol:decanoic acid HDES demonstrated significantly improved extraction efficiency for lead (up to 93.49 %) and cadmium (up to 76.70 %) at initial concentrations of 1000 ppm and 100 ppm, respectively. The extraction mechanism was found to be primarily driven by the complexation and partitioning effects of thymol:decanoic acid with lead or cadmium, as confirmed by the noticeable changes in harmonic frequencies (730, 1337, and 1515 cm) observed in the IR spectra analysis before and after extraction. Additionally, the performance of the thymol:decanoic acid HDES was evaluated through solvent regeneration using a multi-stage extraction and reuse approach.
{"title":"Comparative analysis of lead and cadmium extraction capacities of hydrophobic deep eutectic solvents","authors":"Irfan Wazeer, Lahssen El blidi, Sarwono Mulyono, Ahmed Halilu, Hanee Farzana Hizaddin, Mohd Ali Hashim, Mohamed K. Hadj-Kali","doi":"10.1016/j.jiec.2024.08.033","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.033","url":null,"abstract":"In this study, a total of eight hydrophobic deep eutectic solvents (HDESs) were prepared and evaluated for their efficacy in extracting lead and cadmium from aqueous solutions. The physical and thermal properties of these HDESs were characterized. Among the HDESs tested, the thymol:decanoic acid system, with a molar ratio of 1:1, exhibited the highest distribution ratios for lead and cadmium, with values of 0.79 and 0.55, respectively. The extraction performance of the thymol:decanoic acid system was further investigated by considering various factors such as contact time, pH, mass ratio of water to HDES, and HDES molar ratio. After optimization, the thymol:decanoic acid HDES demonstrated significantly improved extraction efficiency for lead (up to 93.49 %) and cadmium (up to 76.70 %) at initial concentrations of 1000 ppm and 100 ppm, respectively. The extraction mechanism was found to be primarily driven by the complexation and partitioning effects of thymol:decanoic acid with lead or cadmium, as confirmed by the noticeable changes in harmonic frequencies (730, 1337, and 1515 cm) observed in the IR spectra analysis before and after extraction. Additionally, the performance of the thymol:decanoic acid HDES was evaluated through solvent regeneration using a multi-stage extraction and reuse approach.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211209","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}
N-doped porous carbon with reasonable pore size distribution is conducive to improving low specific capacitance and low ion transport efficiency. Natural N-doped hierarchical porous carbon (NNHPC) was synthesized by microwave-assisted heating using kapok tree and chlorella vulgaris as raw materials. CaO was used as a template to extend the pore channels and simultaneously enhance the retention of N atoms in NNHPC. The pyrolysis properties of the samples and surface functional groups of NNHPC were analyzed, revealing that CaO enhanced the creation of nitrogenous compounds in the coke by inhibiting protein nitrogen decomposition. It led to a 74.45 % increase in N atom retention. When the addition ratio of CaO to biomass is 1:10, the optimal sample NNHPC-1CaO exhibits the highest specific surface area (SSA) of 3117.73 m/g, accompanied by a microporous volume of 0.71 cm/g. Therefore, NNHPC-1CaO exhibits the highest specific capacitance of 429.18 F/g, which still achieves excellent rate performance with 69.53 % at 20 A/g. The symmetric supercapacitor achieves a best energy density of 11.01 Wh/kg at 125 W/kg.
{"title":"Multifunctional CaO template promotes the synthesis of natural N-doped hierarchical porous carbon for supercapacitors","authors":"Xikui Zhang, Zhaosheng Yu, Xiaoqian Ma, Wenchang Yue, Junjie Li, Yujing Zhang","doi":"10.1016/j.jiec.2024.08.039","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.039","url":null,"abstract":"N-doped porous carbon with reasonable pore size distribution is conducive to improving low specific capacitance and low ion transport efficiency. Natural N-doped hierarchical porous carbon (NNHPC) was synthesized by microwave-assisted heating using kapok tree and chlorella vulgaris as raw materials. CaO was used as a template to extend the pore channels and simultaneously enhance the retention of N atoms in NNHPC. The pyrolysis properties of the samples and surface functional groups of NNHPC were analyzed, revealing that CaO enhanced the creation of nitrogenous compounds in the coke by inhibiting protein nitrogen decomposition. It led to a 74.45 % increase in N atom retention. When the addition ratio of CaO to biomass is 1:10, the optimal sample NNHPC-1CaO exhibits the highest specific surface area (SSA) of 3117.73 m/g, accompanied by a microporous volume of 0.71 cm/g. Therefore, NNHPC-1CaO exhibits the highest specific capacitance of 429.18 F/g, which still achieves excellent rate performance with 69.53 % at 20 A/g. The symmetric supercapacitor achieves a best energy density of 11.01 Wh/kg at 125 W/kg.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211208","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 : 2024-08-25DOI: 10.1016/j.jiec.2024.08.040
Yijian Hu, Zhaosheng Yu, Wenchang Yue, Zi You, Xiaoqian Ma
This study presents a new pathway for effective and environmentally friendly hydrogen generation from biomass pyrolysis using perovskite-type catalysts for highly valuable biomass conversion. Firstly, the impact of different Ni doping levels on LaCoO catalytic reactivity was investigated. On this basis, the impacts of different carbide slag adding proportions and reaction temperatures on the hydrogen yield and concentration were investigated. Among them, the maximum hydrogen yield at 600 °C under NiLaCo catalyst is 553.79 mL/g when the proportion of carbide slag is 5:15, and the volume concentration of hydrogen is 62.67 vol%. The outcomes demonstrated that the prepared NiO-LaCoO has excellent cycling performance, and the hydrogen yield of the NiLaCo catalyst decreased only marginally from 546.98 mL/g to 503.94 mL/g after ten cycles, with a comparatively small reduction of only 7.87 %. In particular, a high hydrogen concentration of 63.43 vol% is maintained in the pyrolysis gas.
{"title":"NiO-LaCoO3 catalysts for biomass pyrolysis to hydrogen-rich gas","authors":"Yijian Hu, Zhaosheng Yu, Wenchang Yue, Zi You, Xiaoqian Ma","doi":"10.1016/j.jiec.2024.08.040","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.040","url":null,"abstract":"This study presents a new pathway for effective and environmentally friendly hydrogen generation from biomass pyrolysis using perovskite-type catalysts for highly valuable biomass conversion. Firstly, the impact of different Ni doping levels on LaCoO catalytic reactivity was investigated. On this basis, the impacts of different carbide slag adding proportions and reaction temperatures on the hydrogen yield and concentration were investigated. Among them, the maximum hydrogen yield at 600 °C under NiLaCo catalyst is 553.79 mL/g when the proportion of carbide slag is 5:15, and the volume concentration of hydrogen is 62.67 vol%. The outcomes demonstrated that the prepared NiO-LaCoO has excellent cycling performance, and the hydrogen yield of the NiLaCo catalyst decreased only marginally from 546.98 mL/g to 503.94 mL/g after ten cycles, with a comparatively small reduction of only 7.87 %. In particular, a high hydrogen concentration of 63.43 vol% is maintained in the pyrolysis gas.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211207","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}
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：