Chemical Engineering and Processing - Process Intensification最新文献_第3页

Removal of diclofenac sodium from simulated wastewater through an optimized plasma technology system synergized with activated carbon and persulfate 通过与活性炭和过硫酸盐协同作用的优化等离子体技术系统去除模拟废水中的双氯芬酸钠

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-10 DOI: 10.1016/j.cep.2024.110068

Jia-Wei Song , Jia Bao , Yang Liu , Xin Wang , Qing-Xin Shen

{"title":"Removal of diclofenac sodium from simulated wastewater through an optimized plasma technology system synergized with activated carbon and persulfate","authors":"Jia-Wei Song , Jia Bao , Yang Liu , Xin Wang , Qing-Xin Shen","doi":"10.1016/j.cep.2024.110068","DOIUrl":"10.1016/j.cep.2024.110068","url":null,"abstract":"<div><div>Diclofenac sodium (DCF) has received much attention due to the contaminations associated with its frequent usage. Current technologies for DCF removal from wastewater have presented higher energy consumption and lower cost efficiency, thus efficient removal of DCF without secondary pollution would be required. In this study, removal of DCF by plasma technology was modeled and optimized via the response surface methodology (RSM). The DCF removal rate could reach 66.3 % after a treatment of 60 min when the voltage was 12.7 kV, the discharge gap was 15 mm, and the number of discharge needles was 5. Subsequently, further addition of granular activated carbon (GAC) and persulfate (PS) enhanced the removal of DCF through the construction of an optimized plasma/GAC/PS system. The improved removal rate of DCF could rise to 90.4 %, when GAC was 2 g/L and PS was 2 mmol/L under the optimal conditions of RSM. Based upon the analysis of UPLC-QTOF-MS/MS and UV–vis and free radical quenching, the removal of DCF in the plasma/GAC/PS system mainly relied on the attack of •OH and SO<sub>4</sub><sup>•⁻</sup> on the benzene ring, involving the C<img>N breakage of DCF and the generation of by-products. Finally, residual toxicity and cost of the DCF treatment were evaluated.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110068"},"PeriodicalIF":3.8,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655093","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}

引用次数: 0

Enhancing the extraction of germanium from zinc oxide dust through microwave roasting and the underlying mechanism 通过微波焙烧提高氧化锌粉尘中锗的提取及其内在机理

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-10 DOI: 10.1016/j.cep.2024.110050

Wankun Wang , Fuchun Wang

{"title":"Enhancing the extraction of germanium from zinc oxide dust through microwave roasting and the underlying mechanism","authors":"Wankun Wang , Fuchun Wang","doi":"10.1016/j.cep.2024.110050","DOIUrl":"10.1016/j.cep.2024.110050","url":null,"abstract":"<div><div>In this study, a microwave roasting-sulfuric acid leaching process was proposed to increase the efficacy of extracting germanium (Ge) from Ge-bearing zinc oxide (ZnO) dust. Microwave energy has a selective cleavage effect on ZnO dust. Proper microwave roasting of Ge-bearing ZnO dust can fracture the ZnO dust, reduce the particle size, increase the particle size uniformity and specific surface area, and transform the phase of Fe<sub>4</sub>Ge<sub>3</sub>O<sub>12</sub>, thus improving the leaching percentage of Ge from the ZnO dust. The optimized conditions were as follows: microwave heating temperature of 290°C, microwave heating time of 5 min, liquid-solid ratio of 6 mL/g, leaching time of 4 h, initial concentration of sulfuric acid of 9 mol/L, and leaching temperature of 60 °C; the leaching percentage of Ge was 84.4 %. In contrast, the leaching percentage of Ge was found to be 62.4 % under the same conditions without roasting. In this study, we described a promising strategy for leaching Ge from ZnO dust via the microwave roasting-sulfuric acid leaching process.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110050"},"PeriodicalIF":3.8,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655092","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}

引用次数: 0

Ultrasound-assisted adsorptive desulfurization of dibenzothiophene from model fuel on K2CO3-activated biochar 在 K2CO3 活性生物炭上超声辅助吸附脱硫模型燃料中的二苯并噻吩

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-09 DOI: 10.1016/j.cep.2024.110065

Sara K. Saeed , Duaa H. Altamer , Ahmed M. Khalaf , Abdelrahman B. Fadhil

{"title":"Ultrasound-assisted adsorptive desulfurization of dibenzothiophene from model fuel on K2CO3-activated biochar","authors":"Sara K. Saeed , Duaa H. Altamer , Ahmed M. Khalaf , Abdelrahman B. Fadhil","doi":"10.1016/j.cep.2024.110065","DOIUrl":"10.1016/j.cep.2024.110065","url":null,"abstract":"<div><div>A novel mesoporous activated biochar (ABC) was developed from an equal mix of date and olive stones and implemented in the ultrasound-assisted adsorptive desulfurization (USADS) of model gasoline (300 ppm DBT/n-hexane) and model kerosene (300 ppm DBT/cyclohexane). The biowaste blend was carbonized at 450 °C for 75 min at a 10 °C/min heating rate, followed by K<sub>2</sub>CO<sub>3</sub>-activation. The superior ABC was synthesized at 750 °C for 1 h using an impregnation ratio of 1:1 K<sub>2</sub>CO<sub>3</sub>: biochar. The BET surface area and average pore diameter of the resulting ABC were 1099.70 m<sup>2</sup>/g and 5.14 nm, respectively. The USADS of both models was achieved at relatively mild experimental conditions (0.20 g of the ABC 30 °C, 40 min, and 120 W US power). At these conditions, the USADS of model gasoline amounted to 97.32 % compared to 99.39 % for model kerosene. The USADS process of both models followed the Langmuir model of the adsorption isotherms and the pseudo-2nd-order kinetics model. The ABC was recoverable and effective until the 5th regeneration cycle and reused reasonably. The maximum USADS of real gasoline (88.12 %) was achieved using 1.0 g of the ABC at 30 °C for 120 min.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110065"},"PeriodicalIF":3.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704938","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}

引用次数: 0

Innovating for sustainability: A perspective on the spinning mesh disc reactor's development path 创新促进可持续性：从纺丝网圆盘反应器的发展道路看问题

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-08 DOI: 10.1016/j.cep.2024.110066

Emma A.C. Emanuelsson

引用次数: 0

Production of calcium and magnesium titanates using concentrated solar energy 利用聚光太阳能生产钙镁钛酸盐

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-06 DOI: 10.1016/j.cep.2024.110052

D. Fernández-González , J. Piñuela-Noval , C. Gómez-Rodríguez , A. Fernández , L.V. García-Quiñonez , L.A. Díaz , L.F. Verdeja

{"title":"Production of calcium and magnesium titanates using concentrated solar energy","authors":"D. Fernández-González , J. Piñuela-Noval , C. Gómez-Rodríguez , A. Fernández , L.V. García-Quiñonez , L.A. Díaz , L.F. Verdeja","doi":"10.1016/j.cep.2024.110052","DOIUrl":"10.1016/j.cep.2024.110052","url":null,"abstract":"<div><div>Solar energy is an adequate technology for different processes in metallurgy, materials processing, recycling, or ceramic-refractory materials, because of the high temperatures attained which are reached when the solar radiation is concentrated. This growing interest has also emerged from the obtaining of such temperatures without releasing pollutants such as carbon dioxide, SO<sub>x</sub>, NO<sub>x</sub>, or dioxins. Other benefits associated with concentrated solar energy are that this energy source is virtually free and the possibility of operating in places isolated from the electrical grid. Therefore, this research proposes the integration of concentrated solar energy in the production of calcium and magnesium titanates, which are materials with increasing demand in the field of electric components. Experimental work was carried out in the Odeillo solar furnace located in Font-Romeu-Odeillo-Via (France) using a 1.5-meter parabolic concentrator and mixtures of CaO and TiO<sub>2</sub> and MgO and TiO<sub>2</sub> in 1:1 molar ratio. Mixtures were subjected to values of incident radiation exceeding 900 W/m<sup>2</sup> without using any special atmosphere and in very short times, which did not surpass 10 min. X-ray diffraction technique was employed to confirm the formation of the CaTiO<sub>3</sub> and MgTiO<sub>3</sub> perovskites. Therefore, concentrated solar energy might be a novel, fast, and environmentally sustainable manner of producing calcium and magnesium titanates.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110052"},"PeriodicalIF":3.8,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655091","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}

引用次数: 0

Influence of high-speed jet on the particle distributions in downer 高速射流对下料机颗粒分布的影响

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-05 DOI: 10.1016/j.cep.2024.110051

Zihan Yan , Lining Wu , Dexi Huo , Sheng Chen , Chunxi Lu

引用次数: 0

Zirconia encrusted ceramic composite membrane for uremic toxins removal: Fabrication and assessment of biocompatibility 用于清除尿毒症毒素的氧化锆包壳陶瓷复合膜：制作和生物相容性评估

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-02 DOI: 10.1016/j.cep.2024.110048

Roshni M , Pugazhenthi G , Vasanth D

{"title":"Zirconia encrusted ceramic composite membrane for uremic toxins removal: Fabrication and assessment of biocompatibility","authors":"Roshni M , Pugazhenthi G , Vasanth D","doi":"10.1016/j.cep.2024.110048","DOIUrl":"10.1016/j.cep.2024.110048","url":null,"abstract":"<div><div>In this study, tubular zirconia composite membranes (ZM1-ZM3) were developed using low-cost tubular substrate which was prepared utilizing naturally available clay materials by an extrusion approach. The zirconia nanoparticles were encrusted on a low-cost tubular substrate using spray pyrolysis technique. The membranes were investigated for their biocompatibility in addition to pore size, chemical stability, water permeability, porosity, contact angle, thermogravimetric (TGA), and X-ray diffraction (XRD). Water permeability, pore size and porosity of optimized membrane (ZM3) were 3.05 × 10<sup>–4</sup> ± 0.03 L.m<sup>-2</sup>.h<sup>-1</sup>.Pa<sup>-1</sup>, 119 ± 0.57 nm and 36 ± 0.12 %, respectively. Platelets adhesion and protein adsorption were measured to be 4630 ± 46 platelets.mm<sup>-2</sup>, and 1.05 ± 0.02 μg.cm<sup>-2</sup> respectively, while the activated partial thromboplastin time (APTT) and prothrombin time (PT) were 80 ± 0.51 s and 27 ± 0.26 s, respectively. Complement activation C3 and C4 concentrations were assessed to be 76.2 ± 0.88 mg.dL<sup>-1</sup> and 21.57 ± 0.80 mg.dL<sup>-1</sup>, respectively and hemolysis ratio was 0.31 ± 0.01 %. Moreover, the membrane had a considerable antifouling nature with a flux recovery ratio of 89.22 ± 0.58 %. Protein retention was found to be 81.14 ± 0.58 %, in addition to outstanding sieving coefficients of uremic toxins like urea (0.95 ± 0.005), creatinine (0.93 ± 0.004), and phosphate (0.90 ± 0.004). These findings suggest that the produced tubular zirconia composite membrane has the potency for hemofiltration.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110048"},"PeriodicalIF":3.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655089","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}

引用次数: 0

An interview with Prof. Polona Žnidaršič Plazl 对 Polona Žnidaršič Plazl 教授的采访

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.109909

Polona Žnidaršič Plazl

引用次数: 0

Comprehensive investigation of gas hold-up in a double coaxial mixer with shear-thinning fluids exhibiting yield stress: Experimental, numerical, and artificial neural network approaches 全面研究具有屈服应力的剪切稀化流体在双同轴混合器中的气体滞留：实验、数值和人工神经网络方法

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.110049

Forough Sharifi , Ehsan Behzadfar , Farhad Ein-Mozaffari

{"title":"Comprehensive investigation of gas hold-up in a double coaxial mixer with shear-thinning fluids exhibiting yield stress: Experimental, numerical, and artificial neural network approaches","authors":"Forough Sharifi , Ehsan Behzadfar , Farhad Ein-Mozaffari","doi":"10.1016/j.cep.2024.110049","DOIUrl":"10.1016/j.cep.2024.110049","url":null,"abstract":"<div><div>This study addresses the challenge of uneven gas dispersion in yield-stress, non-Newtonian fluids, commonly encountered in industries such as biopharmaceuticals, cosmetics, and food processing. While previous research demonstrated the advantages of dual coaxial mixers for pseudoplastic fluids, limited attention has been given to aerating yield-pseudoplastic fluids with higher aspect ratios. This study bridges that gap by investigating both local and global gas hold-up under various conditions, utilizing electrical resistance tomography and computational fluid dynamics. Key findings showed that increasing the anchor speed from stationary to 30 rpm significantly enhanced aeration efficiency (gas hold-up per specific power consumption), with improvements of 78 % in UP-CO mode and 25 % in UP-COUNTER mode at <em>N<sub>c</sub></em> = 350 rpm and <em>Q<sub>g</sub></em> = 20 L/min. These results underscore enhanced gas dispersion under specific operating conditions, driving overall process intensification. To ensure accurate prediction of gas hold-up, both dimensional and dimensionless empirical correlations, along with an artificial neural networks (ANNs) model, were developed. The ANNs model exhibited superior accuracy, achieving R² values of 0.99 for both rotation modes, outperforming empirical models, which achieved R² values of 0.90 and 0.89 for UP-CO and UP-COUNTER modes, respectively.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110049"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592650","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}

引用次数: 0

The potential of integrating solar-powered membrane distillation with a humidification–dehumidification system to recover potable water from textile wastewater 将太阳能膜蒸馏与加湿-除湿系统结合起来从纺织废水中回收饮用水的潜力

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.110036

Javed Sikandar Shaikh , Uday Aswalekar , Saleel Ismail , Aniket Akhade

{"title":"The potential of integrating solar-powered membrane distillation with a humidification–dehumidification system to recover potable water from textile wastewater","authors":"Javed Sikandar Shaikh , Uday Aswalekar , Saleel Ismail , Aniket Akhade","doi":"10.1016/j.cep.2024.110036","DOIUrl":"10.1016/j.cep.2024.110036","url":null,"abstract":"<div><div>Textile production is energy- and water-intensive, and membrane distillation (MD) has shown potential for reclaiming potable water from textile wastewater. However, in the current state, the energy and water recovery potential of MD is lower compared to other conventional distillation technologies. To address these issues, this study proposes and assesses a novel solar-powered hybrid Sweeping Gas MD (SGMD) unit integrated with a humidification dehumidification (HDH) system. Real textile wastewater from bleaching and dyeing processes is treated in the hybrid SGMD-HDH system to recover freshwater. An optical-thermal sub-model for the parabolic trough collector and the heat and mass transfer model for the dehumidifier are developed and validated using experimental measurements. The results reveal that the hybrid SGMD-HDH can exhibit nearly 20 % higher water flux and 50 % higher gain output ratio (GOR) compared to the standalone MD system. The highest water production and average GOR for bleaching wastewater feed solution reached 11.72 kg/day and 0.64, respectively. The higher concentration of chemical contaminants in dyeing wastewater decreased water flux and GOR by up to 14 % and 10 %, respectively, compared to bleaching wastewater. Elemental analysis showed increased carbon concentrations on the polytetrafluoroethylene membrane surface arising from organic fouling.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"205 ","pages":"Article 110036"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553124","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}

引用次数: 0