Chemical Engineering Research & Design最新文献_第5页

Characterization of mixing phenomena in T-mixers using smartphone devices 利用智能手机设备表征t型混频器中的混音现象

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-12 DOI: 10.1016/j.cherd.2025.09.017

Francesco Volpe, Giuseppe Battaglia, Salvatore Romano, Leandro Bellanca, Michele Ciofalo, Andrea Cipollina, Giorgio Micale, Alessandro Tamburini

{"title":"Characterization of mixing phenomena in T-mixers using smartphone devices","authors":"Francesco Volpe, Giuseppe Battaglia, Salvatore Romano, Leandro Bellanca, Michele Ciofalo, Andrea Cipollina, Giorgio Micale, Alessandro Tamburini","doi":"10.1016/j.cherd.2025.09.017","DOIUrl":"10.1016/j.cherd.2025.09.017","url":null,"abstract":"<div><div>One of the main hurdles for research accessibility lies in the availability of reliable instrumentation. In this regard, the use of common devices from daily life, like smartphones, is a promising possibility to support researchers’ efforts. Several authors have already proved the possible application of smartphone devices in different scientific fields. In the present work, for the first time, mixing phenomena inside a square cross-sectional T-mixer were thoroughly assessed by adopting the digital camera of a commercial smartphone. Several flow regimes were examined, namely vortex, steady symmetric engulfment and turbulent, encompassing a wide range of Reynolds numbers from 100 to 5350. The pure dilution of non-reacting species was studied through a digital colorimetric image analysis technique. For comparison, a professional digital single-lens reflex (DSLR) camera was also employed to capture the same phenomena. Clear criteria for the use of digital cameras and the applicability of the experimental technique were provided. Numerical simulations, either steady-state laminar or Large Eddy Simulation (Smagorinsky model), were carried out to support the analysis. Strengths and weaknesses of the adopted two-dimensional digital image analysis technique were marked providing useful indications in the spreading panorama of low-cost technologies in the academic and industrial fields.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 362-376"},"PeriodicalIF":3.9,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099601","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

Bubble dynamics in saturated pool boiling of ethylene glycol–water mixtures 乙二醇-水混合物饱和池沸腾过程中的气泡动力学

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-12 DOI: 10.1016/j.cherd.2025.09.018

Ravi Raushan , Yogesh M. Nimdeo , Gaurav A. Bhaduri , Harish Pothukuchi

{"title":"Bubble dynamics in saturated pool boiling of ethylene glycol–water mixtures","authors":"Ravi Raushan , Yogesh M. Nimdeo , Gaurav A. Bhaduri , Harish Pothukuchi","doi":"10.1016/j.cherd.2025.09.018","DOIUrl":"10.1016/j.cherd.2025.09.018","url":null,"abstract":"<div><div>The present study numerically investigates the growth behavior of an isolated vapour bubble during nucleate pool boiling in an ethylene glycol (EG)-water mixture at saturation temperature and atmospheric pressure. EG concentration was varied from 0 % to 50 % by weight, and the isothermal wall superheat <span><math><mrow><mfenced><mrow><mo>∆</mo><msub><mrow><mi>T</mi></mrow><mrow><mi>sup</mi></mrow></msub></mrow></mfenced></mrow></math></span> ranged between 8 and 15 K. A 2D axisymmetric fluid domain (5 mm×12 mm) with a uniform grid of 40 µm size was employed. Simulation was performed using Volume of Fluid (VOF) method in Ansys Fluent, incorporating user-defined functions (udf’s) to model phase change. The study examined the influence of EG concentration and <span><math><mrow><mo>∆</mo><msub><mrow><mi>T</mi></mrow><mrow><mi>sup</mi></mrow></msub></mrow></math></span> on bubble growth dynamics and departure diameter. Results indicate that increasing EG concentration suppresses bubble growth and delays departure. Compared to pure water, a 50 % EG-water mixture exhibited an approximate 20 % reduction in equivalent bubble departure diameter. This reduction is attributed to increase heat and mass transfer resistant at the vapour-liquid interface and lower surface tension of the EG-water mixture. The IR spectroscopy revealed weaker hydrogen bonding and structural changes with increasing EG concentration, enhances the hydrophilicity behavior of EG molecules, thereby promoting bulk dispersion and reducing surface tension.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 377-390"},"PeriodicalIF":3.9,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099602","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

A review of carbon accounting in petroleum refining industry 石油炼制行业碳核算综述

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-11 DOI: 10.1016/j.cherd.2025.09.006

Yupeng Xing , Fenghu Liang , Hang Liu , Rui Xia , Shuzhan Zhang , Dongya Zhao , Libo Zhang , Wei Fang

引用次数: 0

Biochar-supported zinc ferrite for H2S removal at room temperature in anaerobic conditions 生物炭载铁酸锌在室温厌氧条件下脱除H2S的研究

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-11 DOI: 10.1016/j.cherd.2025.09.015

Bo Yu , Jialan Mi , Chenyuan Cui , Siwei Xiang , Kui Qiu

{"title":"Biochar-supported zinc ferrite for H2S removal at room temperature in anaerobic conditions","authors":"Bo Yu , Jialan Mi , Chenyuan Cui , Siwei Xiang , Kui Qiu","doi":"10.1016/j.cherd.2025.09.015","DOIUrl":"10.1016/j.cherd.2025.09.015","url":null,"abstract":"<div><div>In this study, a novel biochar-supported zinc ferrite (ZnFe<sub>2</sub>O<sub>4</sub>@BC) composite was synthesized via a hydrothermal process to efficiently remove hydrogen sulfide (H<sub>2</sub>S) under anaerobic conditions at room temperature. Comprehensive characterization by XRD, FT‑IR, BET, and SEM confirmed that ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles were uniformly dispersed on the biochar matrix, creating a porous structure that enhanced gas diffusion and minimized particle agglomeration. Systematic investigations of key parameters, including biochar dosage, operating temperature, flow rate, and loading amount, revealed that optimal conditions (0.2 g ZnFe<sub>2</sub>O<sub>4</sub>, 0.8 g BC, 30 mL/min flow rate at 30 °C) yielded an impressive H<sub>2</sub>S adsorption capacity of 309.9 mg/g. Further analyses using XRD, FT‑IR, SEM, and XPS on the post-adsorption composite elucidated the multi-step adsorption-redox-chemical reaction mechanism underlying the desulfurization process. Additionally, repeated cyclic adsorption-desorption tests confirmed the robust stability and regeneration capability of ZnFe<sub>2</sub>O<sub>4</sub>@BC, indicating its promise as an effective adsorbent for H<sub>2</sub>S removal in anaerobic environments.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 286-297"},"PeriodicalIF":3.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099480","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

CFD simulation and experimental validation of oil-in-water emulsion flow on CT images of a sand filter medium: Impact of pore morphology on trapping phenomena 砂滤介质CT图像上水包油乳化液流动的CFD模拟与实验验证：孔隙形态对捕获现象的影响

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-10 DOI: 10.1016/j.cherd.2025.09.014

Alireza Sadeghinia, Nasir Mehranbod

{"title":"CFD simulation and experimental validation of oil-in-water emulsion flow on CT images of a sand filter medium: Impact of pore morphology on trapping phenomena","authors":"Alireza Sadeghinia, Nasir Mehranbod","doi":"10.1016/j.cherd.2025.09.014","DOIUrl":"10.1016/j.cherd.2025.09.014","url":null,"abstract":"<div><div>Porous medium clogging is a major challenge for infiltration systems. While the physical mechanisms of clogging have been widely investigated, the mesoscale processes and dynamics in porous structures remain poorly understood. This study examines the trapping phenomena in a quartz sand filter using a combination of experiments and numerical simulations. The numerical approach employs the mixture model in COMSOL Multiphysics, applied to simulation geometries reconstructed from CT images of porous media. The investigation is divided into two parts. First, the effects of injection velocity, column height, and porosity on oil entrapment are analyzed experimentally. Second, the influence of sand-pack heterogeneity and oil concentration is examined using CT-based filter bed geometries. The sensitivity analysis highlights column height as the most influential factor: increasing the column height from 30 to 70 cm at a porosity of 0.38 nearly doubles the trapped oil volume fraction. In contrast, raising the injection velocity from 1.7 × 10⁻⁴ to 3.74 × 10⁻⁴ m/s reduces the trapped oil fraction by 28.5 % at a porosity of 0.46. Overall, the simulation results show satisfactory agreement with experimental data, with a deviation below 15 %. The novelty of this work lies in the quantification of trapped oil and its impact on porosity reduction using realistic CT-based sand filter geometries. These findings reveal previously unknown facts about mesoscale clogging mechanisms and offer practical guidance for the design and optimization of infiltration systems.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 452-467"},"PeriodicalIF":3.9,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119232","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

Recent advances in zeolite-based adsorbents for enhanced CH4/N2/CO2 separation in coalbed methane 沸石基吸附剂促进煤层气中CH4/N2/CO2分离的研究进展

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-10 DOI: 10.1016/j.cherd.2025.09.010

Wenhui Bi , Fanqi Min , Xing Fan , Tengfei Zhang , Qing Liu , Peng Liang

{"title":"Recent advances in zeolite-based adsorbents for enhanced CH4/N2/CO2 separation in coalbed methane","authors":"Wenhui Bi , Fanqi Min , Xing Fan , Tengfei Zhang , Qing Liu , Peng Liang","doi":"10.1016/j.cherd.2025.09.010","DOIUrl":"10.1016/j.cherd.2025.09.010","url":null,"abstract":"<div><div>Coalbed methane has attracted significant attention due to its potential for comprehensive utilization and the imperative need to control the emissions of the potent greenhouse gas methane. Pressure-swing adsorption separation is the most feasible gas enrichment technique, and zeolites show remarkable potential in the selective separation of CH<sub>4</sub>, N<sub>2</sub>, and CO<sub>2</sub> from coalbed methane due to their pore regularity and homogeneity, high specific surface area, large pore volume, and strong polarity. ETS-4, SAPO-18 and SAPO-34 exhibit N<sub>2</sub>/CH<sub>4</sub> selectivities up to 26, 15 and 12, respectively, while ZK-5, zeolite A, X, Y, ZSM-5 and silicalite-1 deliver CH<sub>4</sub>/N<sub>2</sub> selectivities up to 11.8 (Ag-ZK-5) and adsorption capacities of 1.2–4.0 mmol g⁻<sup>1</sup> CH<sub>4</sub> at 298 K and 0.1–0.3 MPa. Eight-membered-ring zeolites such as Li-SSZ-13, NaMg-GIS, SAPO-17 and K-MER achieve CO<sub>2</sub>/N<sub>2</sub> selectivities of 310, 132, 276 and 85, respectively, with CO<sub>2</sub> adsorption capacities of 1.3–4.5 mmol g⁻<sup>1</sup> at 298 K and 0.1 MPa. A comprehensive review of recent advances in zeolites synthesis, modification techniques and adsorption kinetics is presented to elucidate the factors responsible for the increased CH<sub>4</sub> adsorption capacity and selectivity of different zeolite types. Furthermore, this review proposes the prevailing challenges and offers our personal perspectives for the application of zeolite in coalbed methane enrichment.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 205-226"},"PeriodicalIF":3.9,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061228","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

Unraveling the potential of Fischer–Tropsch fuel production from in-situ utilization of excavated waste and landfill gas with renewable hydrogen supply 利用可再生氢气供应的挖掘废物和垃圾填埋气的原位利用，揭示费托燃料生产的潜力

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-09 DOI: 10.1016/j.cherd.2025.09.013

Jiehong Tang , Yuting Tang , Hongyu Liu , Jingmin Deng , Ziwei Sun , Songbing Peng , Gao Shen , Haifeng Zhang , Xiaoqian Ma

{"title":"Unraveling the potential of Fischer–Tropsch fuel production from in-situ utilization of excavated waste and landfill gas with renewable hydrogen supply","authors":"Jiehong Tang , Yuting Tang , Hongyu Liu , Jingmin Deng , Ziwei Sun , Songbing Peng , Gao Shen , Haifeng Zhang , Xiaoqian Ma","doi":"10.1016/j.cherd.2025.09.013","DOIUrl":"10.1016/j.cherd.2025.09.013","url":null,"abstract":"<div><div>Excavated waste (EW) and landfill gas (LFG), the representative excavated resources, provide sufficient organic source for the Fischer–Tropsch (FT) synthesis, and the surroundings of the landfill site further gives the chance for photovoltaic-driven H<sub>2</sub> production. In this study, an EW&LFG-to-fuel (EW&LFGtF) life-cycle system is proposed and simulated by Aspen Plus, and its techno-environment-economic performances are comprehensively investigated applying ecoinvent databases and literature data. The systematic exergy efficiency is 66.70 %, and the main consumer of electricity is the FT and solid oxide electrolysis cell (SOEC) sections. Life cycle assessment (LCA) results show that the production of FT fuel from residue-derived fuel (RDF) and LFG brings a global warming potential (GW) of 41.77 kg<sub>CO2eq</sub>/GJ, while the up- and downstream life-cycle processes, especially the EW mining process, has further promoted the final GW to 72.56 kg<sub>CO2eq</sub>/GJ. With a levelized cost of fuel (<em>LCOF</em>) of 33.23 $/GJ (similar to previous reported results), a net present value (<em>NPV</em>) of 23.21 M$ is reported in this work. Sensitivity results showed that the transformation towards the greener energy supply structure help decrease the GW to 72.56 kg<sub>CO2eq</sub>/GJ in the future, and the breakeven point is reached when the gasoline and diesel price drops by ∼20 %.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 155-164"},"PeriodicalIF":3.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047062","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

Numerical investigation of non-Newtonian fluids in single screw extruders, Part II: Time-dependent studies 非牛顿流体在单螺杆挤出机中的数值研究，第二部分：时间依赖性研究

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-09 DOI: 10.1016/j.cherd.2025.09.002

T.M. Kousemaker , A.I. Vakis , F. Picchioni , P. Druetta

{"title":"Numerical investigation of non-Newtonian fluids in single screw extruders, Part II: Time-dependent studies","authors":"T.M. Kousemaker , A.I. Vakis , F. Picchioni , P. Druetta","doi":"10.1016/j.cherd.2025.09.002","DOIUrl":"10.1016/j.cherd.2025.09.002","url":null,"abstract":"<div><div>Polymer processing techniques occupy nowadays a crucial role in the sustainable production of plastics/polymers, and polymer extrusion is in the center of these. This paper discusses the second part of a CFD study of a 3D single screw extruder, considering different transient aspects of the whole process, from the viscosity variation, residence time, to the chemical reactions taking place. The heat of reaction is included to incorporate the effect of these exothermic reactions, modifying in a coupled study the rheological properties, and hence the fluid behavior. The model incorporates mass, energy and momentum equations coupled with a non-Newtonian fluid model, where a shear-thinning/-thickening temperature-depending rheology correlation is modeled. The results show that the different physical phenomena cannot be solved separately but must be coupled in order to have practical results, since the reactions affect the heat transfer and this ultimately the rheological properties, affecting the flow parameters. Moreover, the transient analysis of the extruder (e.g. start-up) is vital in the proper design of the equipment and screw configuration.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 121-140"},"PeriodicalIF":3.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047058","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

Screening the geometrical, thermodynamic, mechanical, and bond population characteristics of inorganic halide perovskites AgSrX3 (X=Cl, Br, I) for photovoltaic applications: A DFT insight 筛选无机卤化物钙钛矿AgSrX3 （X=Cl, Br， I）用于光伏应用的几何、热力学、力学和键族特征：DFT洞察

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-09 DOI: 10.1016/j.cherd.2025.09.011

Muhammad Riaz , Muhammad Waqas Mukhtar , Syed Mansoor Ali , Muhammad Imran Saleem , Rajeh Alotaibi , Syed Danish Ali

{"title":"Screening the geometrical, thermodynamic, mechanical, and bond population characteristics of inorganic halide perovskites AgSrX3 (X=Cl, Br, I) for photovoltaic applications: A DFT insight","authors":"Muhammad Riaz , Muhammad Waqas Mukhtar , Syed Mansoor Ali , Muhammad Imran Saleem , Rajeh Alotaibi , Syed Danish Ali","doi":"10.1016/j.cherd.2025.09.011","DOIUrl":"10.1016/j.cherd.2025.09.011","url":null,"abstract":"<div><div>Halide perovskites have gained significant focus in diverse fields because of their flexible chemistry and remarkable ionic conductivity. Herein, the geometrical, electronic, mechanical, thermodynamic, and bond population characteristics of AgSrX<sub>3</sub> (X = Cl, Br, and I) inorganic halide perovskites were investigated using DFT within CASTEP framework by considering HSE03 functional. Structural optimization reveals well-defined cubic symmetry with space group Pm-3m [221], and negative formation energy values confirmed their thermodynamic stability. The calculated band gaps are 2.81 eV for AgSrCl<sub>3</sub>, 2.14 eV for AgSrBr<sub>3</sub>, and 1.21 eV for AgSrI<sub>3</sub>, indicating their semiconductor behavior. DOS reveals that valence bands are primarily influenced by the Ag-d orbitals and p orbitals of the halide’s ions. The elastic constants (C<sub>11</sub>, C<sub>12</sub>, and C<sub>44</sub>) satisfy the Born stability criteria, confirmed their mechanical stability. The results of the derived bulk (B), shear (G), and Young’s (Y) moduli, along with Poisson’s ratios (ν) illustrates the ductile character. Furthermore, bond population, Mulliken, and Hirshfeld charges analyses indicating more localized electron density, with Mulliken predicts higher partial charges. Confidently, these AgSrX<sub>3</sub> (X = Cl, Br, and I) halide perovskites have promising feasibility for advanced photovoltaic applications.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 227-234"},"PeriodicalIF":3.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061225","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

Comparative study on inhibition of mineral scaling on heat exchanger surface with green functionalized graphene nanoplatelets, multiwall carbon nanotubes, and their hybrid 绿色功能化石墨烯纳米片、多壁碳纳米管及其杂化物抑制换热器表面矿物结垢的比较研究

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-08 DOI: 10.1016/j.cherd.2025.09.012

Kaleemullah Shaikh , Samr Ul Hasnain , Wajahat Ahmed Khan , Salim Newaz Kazi , Mohd Nashrul Bin Mohd Zubir , Kamran Ali , Kok Hoe Wong , Rab Nawaz

{"title":"Comparative study on inhibition of mineral scaling on heat exchanger surface with green functionalized graphene nanoplatelets, multiwall carbon nanotubes, and their hybrid","authors":"Kaleemullah Shaikh , Samr Ul Hasnain , Wajahat Ahmed Khan , Salim Newaz Kazi , Mohd Nashrul Bin Mohd Zubir , Kamran Ali , Kok Hoe Wong , Rab Nawaz","doi":"10.1016/j.cherd.2025.09.012","DOIUrl":"10.1016/j.cherd.2025.09.012","url":null,"abstract":"<div><div>The comparative study on inhibition of calcium carbonate (CaCO<sub>3</sub>) scaling with green functionalized multiwall carbon nanotubes (CMWCNT), graphene nanoplatelets (CGNP) and their hybrid (CMWCNT/CGNP) was studied to evaluate the scaling deposition, scaling resistance, overall heat transfer coefficient, economic benefits, and reduction in air pollution (i.e., SO<sub>2</sub>, NO<sub>x</sub>, and CO<sub>2</sub> emissions) because of the mitigation of scaling. In the materials and methods section, three varying weight percentages of CMWCNT, CGNP, and their hybrid were used at 0.0071 wt%, 0.0053 wt%, and 0.0036 wt%, respectively, to treat the cold solution. The outcomes of CaCO<sub>3</sub> scaling deposition exhibited that CMWCNT/CGNP hybrid at 0.0071 wt% is the best mitigating agent for the retardation of CaCO<sub>3</sub> in comparison to the alone CMWCNT and CGNP. The scaling resistance, overall heat transfer coefficient, and reduction in air pollutant emissions validated the CaCO<sub>3</sub> scaling deposition results. The finding of a reduction in air pollution reveals that the best mitigating agent can yearly reduce around 0.0432 tons of SO<sub>2</sub> per MW, 0.048 tons of NOx per MW, and 2.11 tons of CO<sub>2</sub> per MW. From the findings of the comparative investigation, it is concluded that the CMWCNT/CGNP hybrid can elongate the operating life of heat-exchanging equipment and contribute to achieve the Sustainable Development Goal target 7.3.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 313-324"},"PeriodicalIF":3.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099479","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