Chinese Journal of Chemical Engineering最新文献_第3页

Adsorption, separation and recovery performance of spherical PR/CMC/AC composites for cadmium-contaminated soil remediation 球形PR/CMC/AC复合材料对镉污染土壤的吸附、分离和回收性能

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.03.003

Fan Zhang, Miaomiao Zhao, Xiaoyu Jia, Chen Li, Degang Ma

{"title":"Adsorption, separation and recovery performance of spherical PR/CMC/AC composites for cadmium-contaminated soil remediation","authors":"Fan Zhang, Miaomiao Zhao, Xiaoyu Jia, Chen Li, Degang Ma","doi":"10.1016/j.cjche.2025.03.003","DOIUrl":"10.1016/j.cjche.2025.03.003","url":null,"abstract":"<div><div>Activated carbon (AC) is considered to be an excellent adsorbent due to its high specific surface area and various functional groups. AC powders are available in sizes ranging from 44 to 150 μm. Its particle size prevent its separation from the soil. Therefore, when AC powder is applied to Cd-contaminated soil, it only reduces the bioavailability of Cd and Cd is not necessarily removed but semi-immobilized. Recovery of adsorbent materials from the soil is therefore a preferred soil remediation method. In order to achieve the separation of Cd from soil and the recovery and reuse of AC, a batch of phenolic resin (PR) -carboxymethyl cellulose (CMC)-activated carbon (AC) composite (PCC-800) with uniform particle diameter (diameter 0.8 mm) and high compressive strength was prepared. PCC-800 composites were made of PR/CMC/AC calcined at 800 °C in a certain ratio. The Barrett−Joyner−Halender results showed that the PCC-800 spheres own a mesoporous structure. The compressive strength of PCC-800 pellets was 20.6 N. After first adsorption cycle, total Cd in the soil decreased by 52.18% while bioavailable Cd decreased to 25.68% of the original soil. After three cycles, the recovery rates of PCC-800 were 90.37% and the adsorption regeneration was 72.73%. The PCC-800 immobilized Cd by adsorption, precipitation and complexation reaction. This study demonstrates the potential for developing adsorbents that are both easily separable from soil and highly effective in adsorption.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 199-207"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605241","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 transformer-based model for predicting and analyzing light olefin yields in methanol-to-olefins process 甲醇制烯烃过程中基于变压器的轻烯烃产率预测与分析模型

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.03.008

Yuping Luo , Wenyang Wang , Yuyan Zhang , Muxin Chen , Peng Shao

{"title":"A transformer-based model for predicting and analyzing light olefin yields in methanol-to-olefins process","authors":"Yuping Luo , Wenyang Wang , Yuyan Zhang , Muxin Chen , Peng Shao","doi":"10.1016/j.cjche.2025.03.008","DOIUrl":"10.1016/j.cjche.2025.03.008","url":null,"abstract":"<div><div>This study introduces an innovative computational framework leveraging the transformer architecture to address a critical challenge in chemical process engineering: predicting and optimizing light olefin yields in industrial methanol-to-olefins (MTO) processes. Our approach integrates advanced machine learning techniques with chemical engineering principles to tackle the complexities of non-stationary, highly volatile production data in large-scale chemical manufacturing. The framework employs the maximal information coefficient (MIC) algorithm to analyze and select the significant variables from MTO process parameters, forming a robust dataset for model development. We implement a transformer-based time series forecasting model, enhanced through positional encoding and hyperparameter optimization, significantly improving predictive accuracy for ethylene and propylene yields. The model's interpretability is augmented by applying SHapley additive exPlanations (SHAP) to quantify and visualize the impact of reaction control variables on olefin yields, providing valuable insights for process optimization. Experimental results demonstrate that our model outperforms traditional statistical and machine learning methods in accuracy and interpretability, effectively handling nonlinear, non-stationary, high-volatility, and long-sequence data challenges in olefin yield prediction. This research contributes to chemical engineering by providing a novel computerized methodology for solving complex production optimization problems in the chemical industry, offering significant potential for enhancing decision-making in MTO system production control and fostering the intelligent transformation of manufacturing processes.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 266-276"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613779","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

Fabrication of Sb-based alloys/carbon nanofibers with uniform dispersion as anode material for high efficiency sodium storage 均匀分散的铌基合金/碳纳米纤维作为高效储钠阳极材料的制备

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.03.017

Zhe Wang , Zhengpeng Zhu , Kai Xue , Xingmei Guo , Yuanjun Liu , Xiangjun Zheng , Qianqian Fan , Zhongyao Duan , Qinghong Kong , Junhao Zhang

{"title":"Fabrication of Sb-based alloys/carbon nanofibers with uniform dispersion as anode material for high efficiency sodium storage","authors":"Zhe Wang , Zhengpeng Zhu , Kai Xue , Xingmei Guo , Yuanjun Liu , Xiangjun Zheng , Qianqian Fan , Zhongyao Duan , Qinghong Kong , Junhao Zhang","doi":"10.1016/j.cjche.2025.03.017","DOIUrl":"10.1016/j.cjche.2025.03.017","url":null,"abstract":"<div><div>To solve the serious volume expansion problem of Sb-based anode materials in the alloying/dealloying process, a strategy combining electrospinning and hydrogen reduction is proposed to prepare a series of Sb-based alloys/carbon nanofiber composites (SbM/CNFs, M = Co, Zn, Ni). Inactive elements are innovatively introduced to form Sb based alloys with enhanced stability. The results show that the content of SbCo nanoparticles is high to 69.12% (mass), which are uniformly dispersed in carbon fibers. When evaluated as anode material for SIBs, SbCo/CNFs anode exhibits excellent sodium storage capacity, the initial discharge capacity is 580.0 mA h·g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, which can hold 483.5 mA h·g<sup>−1</sup> after 100 cycles. Even the current density increases to 1.0 A g<sup>−1</sup>, the specific capacity still maintains at 344.5 mA h·g<sup>−1</sup> after 150 cycles. The improved sodium storage capacity is attributed to the synergistic effect of conductive carbon fibers and SbCo nanoparticles with uniform dispersion, which not only provide excellent electronic conductivity, but also enhance structural stability to reduce volume change.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 208-216"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614039","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

Synthesis of magnetically separable and recyclable MnFe2O4@SiO2@NH2 nanocomposite coupled-acylated MWCNTS with enhanced photocatalytic performance under visible-light irradiation 可见光下磁可分离可回收MnFe2O4@SiO2@NH2纳米复合偶联酰化MWCNTS的合成及其光催化性能的增强

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.02.022

Mika Sillanpää , Mohammad Reza kimiaei , Soheil Balsini Gavanaroudi , Nezamaddin Mengelizadeh , Najmeh Ahmadi , Davoud Balarak

{"title":"Synthesis of magnetically separable and recyclable MnFe2O4@SiO2@NH2 nanocomposite coupled-acylated MWCNTS with enhanced photocatalytic performance under visible-light irradiation","authors":"Mika Sillanpää , Mohammad Reza kimiaei , Soheil Balsini Gavanaroudi , Nezamaddin Mengelizadeh , Najmeh Ahmadi , Davoud Balarak","doi":"10.1016/j.cjche.2025.02.022","DOIUrl":"10.1016/j.cjche.2025.02.022","url":null,"abstract":"<div><div>A MnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@NH<sub>2</sub> coupled with acylated multi-walled carbon nanotubes (AMWCNT<sub>S</sub>) was prepared using an easy one-step modification approach and applied for the visible light-assisted removal of ciprofloxacin (CIP). FT-IR, XRD, VSM, Raman spectrum, FE-SEM, BJH/BET, UV-Vis, and band gap analysis were used to characterize nanocomposites. In terms of CIP removal, the nanocomposites outperformed both AMWCNT<sub>S</sub> and MnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@NH<sub>2</sub> nanoparticles. At a pH of 7, an initial CIP concentration of 25 mg·L<sup>−1</sup>, a reaction time of 40 min, and a catalyst dose of 0.8 g·L<sup>−1</sup>, all of the CIP was degraded. The ratios of BOD<sub>5</sub>/COD (5-day biological oxygen demand/chemical oxygen demand) and BOD<sub>5</sub>/TOC (5-day biological oxygen demand/total organic carbon) at the beginning of the process were 0.22 and 0.71, respectively, and reached 0.755 and 1.21 at the end of the process, which signposts the conversion of non-biodegradable wastewater into biodegradable wastewater. Scavenger studies disclosed that hydroxyl radicals and holes had the greatest effect on the degradation of CIP. The toxicity of the final effluent was also investigated with <em>E. coli</em> bacteria, and the results showed a very good effect of the process in the field of effluent sterilization. Equilibrium data fully followed first-order kinetics, with a reaction rate constant of 0.109 min<sup>−1</sup>. Also, the half-life for the complete degradation of CIP was equal to 6.8 min. The CIP removal efficiency still remained at 9.4% in the five cycles. MnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@NH<sub>2</sub>@AMWCNT<sub>S</sub> gave a pronounced potential for eliminating CIP from aqueous environment.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 229-243"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614041","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

Method and theory for optimising ash-fusion characteristics in high-aluminium coal ash via coal blending technology 配煤技术优化高铝煤灰灰融合特性的方法与理论

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.02.037

Baoliang Xia , Lirui Mao , Hanxu Li , Chengli Wu , Facun Jiao

{"title":"Method and theory for optimising ash-fusion characteristics in high-aluminium coal ash via coal blending technology","authors":"Baoliang Xia , Lirui Mao , Hanxu Li , Chengli Wu , Facun Jiao","doi":"10.1016/j.cjche.2025.02.037","DOIUrl":"10.1016/j.cjche.2025.02.037","url":null,"abstract":"<div><div>China has abundant resources of high-alumina coal (HAC). However, its application as a raw gasification material is limited owing to high ash-fusion characteristics. For overcoming the limitation, this study employed Xinjiang coal (XJ), having a low ash fusion temperature, to improve the ash fusibility and viscosity of high-alumina Jungar coal (JG). The evolution of Al-containing phases and structures during mixed ash melting were investigated based on XRD, XPS, <sup>27</sup>Al NMR, high-temperature stage microscopy (HTSM), and thermodynamic simulations. An increase in the XJ mass ratio resulted in the transformation of gehlenite to anorthite and mullite, producing more amorphous materials at high temperature. These phenomena were manifested at a microscopic imaging as an increase in the number of reaction/melting sites and their area expansion rate, as well as a decrease in ash area shrinkage and melting temperature. Moreover, the introduction of XJ altered the alumina–oxygen network, reducing the binding to the silica-oxygen network and converting some [AlO<sub>6</sub>]<sup>9−</sup> to [AlO<sub>4</sub>]<sup>5−</sup> as the relative concentration of O<sup>2−</sup> and O<sup>−</sup> increases. Consequently, the decrease in the stability of the aluminate structure improves the AFT and viscosity. Based on these results, a mechanism to improve the ash fusion characteristics of HAC based on coal blending is proposed.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 254-265"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614488","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

Investigation on the reducing parameters of the Helmholtz energy equation of state for methane/methanol binary with VLE data 用VLE数据研究甲烷/甲醇二元体系的亥姆霍兹能态方程的约化参数

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.02.031

Xuehui Wang , Dan Dan , Xinyue Hao , Wei Lin , Edward Wright

{"title":"Investigation on the reducing parameters of the Helmholtz energy equation of state for methane/methanol binary with VLE data","authors":"Xuehui Wang , Dan Dan , Xinyue Hao , Wei Lin , Edward Wright","doi":"10.1016/j.cjche.2025.02.031","DOIUrl":"10.1016/j.cjche.2025.02.031","url":null,"abstract":"<div><div>Natural gas is widely regarded as an efficient, relatively clean, and economically viable energy source. Its safe operation and continuous supply through pipeline infrastructure has led to its prominence in the energy sector. Methanol plays an important role in the natural gas industry, typically serving as a solvent or hydrate inhibitor. Therefore, the accurate estimation of thermodynamic properties for methane/methanol binary is extremely important to optimise the operating parameter, maximise the dehydration effect, and reduce the cost. As the Helmholtz energy equation of state is expected to offer high accuracy in predicting the vapour−liquid equilibrium of methane/methanol binary, four reducing parameters were derived based on collected experimental data. Additionally, the sensitivities of various reducing parameter combinations were simultaneously investigated. The results demonstrated a strong agreement between predicted fractions and experimental data, with the UMADs (uncertainty-weighted mean absolute deviation) of 3.484 and 0.665 for liquid and vapour phases, respectively. Meanwhile, it is deemed “very likely”, “likely”, and “unlikely” to achieve acceptable prediction for 3-parameter optimisation, 2-parameter optimisation and, 1-parameter optimisation, respectively.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 160-170"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596790","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

Adsorption of ciprofloxacin on (Zn-Al) LDHs modified 3D reduced graphene oxide: Response surface methodology, adsorption equilibrium, kinetic and thermodynamic studies 环丙沙星在（Zn-Al） LDHs修饰的3D还原氧化石墨烯上的吸附：响应面方法、吸附平衡、动力学和热力学研究

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.cjche.2025.01.014

Chong Lu, Xingwei Han, Haojun Zou, Xue Gao, Sijia Wang

{"title":"Adsorption of ciprofloxacin on (Zn-Al) LDHs modified 3D reduced graphene oxide: Response surface methodology, adsorption equilibrium, kinetic and thermodynamic studies","authors":"Chong Lu, Xingwei Han, Haojun Zou, Xue Gao, Sijia Wang","doi":"10.1016/j.cjche.2025.01.014","DOIUrl":"10.1016/j.cjche.2025.01.014","url":null,"abstract":"<div><div>The indiscriminate use and disposal of ciprofloxacin (CIP) have led to its detection in water globally, which pose a huge risk to public health and water environment. Herein, (Zn-Al) LDHs modified 3D reduced graphene oxide nanocomposite ((Zn-Al) LDHs/3D-rGO) was synthesized through a feasible one-pot hydrothermal method for CIP removal. The highly distributed (Zn-Al) LDHs flakes on the surface of 3D-rGO endow the resulted (Zn-Al) LDHs/3D-rGO with an excellent adsorption performance for CIP. The adsorption results showed that the adsorption process could be well interpreted by Temkin isothermal model and the pseudo second-order kinetics model. The maximal adsorption capacity of 20.01 mg·g<sup>−1</sup> for CIP could be achieved under the optimal conditions optimized by response surface methodology (RSM). The inhibitory effect of co-existing ions on CIP adsorption were also discussed. The probable adsorption mechanism might be ascribed to π−π interactions, hydrogen bonding, electrostatic, and surface complexation. Regeneration tests showed that the obtained 3D porous material also possessed pronounced recyclability. The obtained (Zn-Al) LDHs/3D-rGO holds a great potential for removal of CIP from actual wastewater.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"83 ","pages":"Pages 125-136"},"PeriodicalIF":3.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596791","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

Effect of elevated pressure on isobaric molar heat capacity 高压对等压摩尔热容的影响

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-06-01 DOI: 10.1016/j.cjche.2024.09.034

Sheguang Ding

{"title":"Effect of elevated pressure on isobaric molar heat capacity","authors":"Sheguang Ding","doi":"10.1016/j.cjche.2024.09.034","DOIUrl":"10.1016/j.cjche.2024.09.034","url":null,"abstract":"<div><div>Isobaric molar heat capacity affected by pressures for non-ideal gases is calculated theoretically at specified temperatures by means of gaseous equations of state, <em>i</em>.<em>e</em>. Redlish-Kwong (RK) Equation, Soave-Redlich-Kwong (SRK) Equation, Peng-Robinson (PR) Equation, Virial Equation, coupled with Romberg numeric integral <em>via</em> solving the key obstacle (∂<em>V</em>/∂<em>T</em>)<sub><em>p</em></sub>, and integral (∂<sup>2</sup><em>V</em>/∂<em>T</em><sup>2</sup>)<sub><em>p</em></sub>. As an example, methane's <em>C</em><sub><em>p</em></sub> is calculated at constant 300 K but 1 MPa & 10 MPa. The calculation results show that less than 2% relative errors occur in comparison with literature values at any specified temperatures and pressures if no phase change survives at elevated pressure <em>P</em><sub>2</sub> and temperature <em>T</em>, or when specified temperatures are greater than critical temperatures in spite of elevated pressures. However, greater errors would be present if gases were considered to be ideal, or if temperatures are lower than critical temperatures at elevated pressures (>10 MPa), because <em>C</em><sub><em>p</em></sub> is the function of both temperature and pressure. In particular, elevated pressures have significant effect on <em>C</em><sub><em>p</em></sub>.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"82 ","pages":"Pages 294-308"},"PeriodicalIF":3.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231410","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 technological process for extracting vanadium from leaching solution of sodium roasting of vanadium slag by manganese salt pretreatment 介绍了钒渣钠焙烧浸出液中锰盐预处理提钒的工艺流程

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.cjche.2024.12.027

Mengxia Liu , Tao Jiang , Jing Wen , Zibi Fu , Tangxia Yu , Changqing Li , Xinyu An

{"title":"A technological process for extracting vanadium from leaching solution of sodium roasting of vanadium slag by manganese salt pretreatment","authors":"Mengxia Liu , Tao Jiang , Jing Wen , Zibi Fu , Tangxia Yu , Changqing Li , Xinyu An","doi":"10.1016/j.cjche.2024.12.027","DOIUrl":"10.1016/j.cjche.2024.12.027","url":null,"abstract":"<div><div>The ammonium salt precipitation method is frequently utilized for extracting vanadium from the leaching solution obtained through sodium roasting of vanadium slag. However, Na<sup>+</sup> and NH<sub>4</sub><sup>+</sup> ions in the vanadium precipitation solution can not be effectively separated, leading to a large amount of ammonia-nitrogen wastewater which is difficult to treat. In this study, the manganese salt pretreatment process is used to extract vanadium from a sodium roasting leaching solution, enabling the separation of vanadium and sodium. The vanadium extraction product of manganese salt is dissolved in acid to obtain vanadium-containing leaching solution, then vanadium is extracted by hydrolysis and vanadium precipitation, and V<sub>2</sub>O<sub>5</sub> is obtained after impurity removal and calcination. The results show that the rate of vanadium extraction by manganese salt is 98.23%. The vanadium extraction product by manganese salt is Mn<sub>2</sub>V<sub>2</sub>O<sub>7</sub>, and its sodium content is only 0.167%. Additionally, the acid solubility of vanadium extraction products by manganese salt is 99.52%, and the vanadium precipitation rate of manganese vanadate solution is 92.34%. After the removal of manganese and calcination process, the purity of V<sub>2</sub>O<sub>5</sub> product reached 97.73%, with a mere 0.64% loss of vanadium. The Mn<sup>2+</sup> and NH<sub>4</sub><sup>+</sup> ions in the solution after vanadium precipitation are separated by precipitation method, which reduces the generation of ammonia-nitrogen wastewater. This is conducive to the green and sustainable development of the vanadium industry.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 219-231"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922791","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

Functional evidential reasoning model (FERM) – A new systematic approach for exploring hazardous chemical operational accidents under uncertainty 功能证据推理模型（FERM）——探索不确定条件下危险化工操作事故的一种新的系统方法

IF 3.7 3区工程技术

Chinese Journal of Chemical Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.cjche.2024.12.021

Qianlin Wang , Jiaqi Han , Lei Cheng , Feng Wang , Yiming Chen , Zhan Dou , Bing Zhang , Feng Chen , Guoan Yang

{"title":"Functional evidential reasoning model (FERM) – A new systematic approach for exploring hazardous chemical operational accidents under uncertainty","authors":"Qianlin Wang , Jiaqi Han , Lei Cheng , Feng Wang , Yiming Chen , Zhan Dou , Bing Zhang , Feng Chen , Guoan Yang","doi":"10.1016/j.cjche.2024.12.021","DOIUrl":"10.1016/j.cjche.2024.12.021","url":null,"abstract":"<div><div>This paper proposed a new systematic approach – functional evidential reasoning model (FERM) for exploring hazardous chemical operational accidents under uncertainty. First, FERM was introduced to identify various causal factors and their performance changes in hazardous chemical operational accidents, along with determining the functional failure link relationships. Subsequently, FERM was employed to elucidate both qualitative and quantitative operational accident information within a unified framework, which could be regarded as the input of information fusion to obtain the fuzzy belief distribution of each cause factor. Finally, the derived risk values of the causal factors were ranked while constructing multi-level accident causation chains to unveil the weak links in system functionality and the primary roots of operational accidents. Using the specific case of the “1·15” major explosion and fire accident at Liaoning Panjin Haoye Chemical Co., Ltd., seven causal factors and their corresponding performance changes were identified. Additionally, five accident causation chains were uncovered based on the fuzzy joint distribution of the functional assessment level (FAL) and reliability distribution (RD), revealing an overall increase in risk along the accident evolution path. The research findings demonstrated that FERM enabled the effective characterization, rational quantification and accurate analysis of the inherent uncertainties in hazardous chemical operational accident risks from a systemic perspective.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 255-269"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929516","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