Asia-Pacific Journal of Chemical Engineering最新文献_第7页

Techno-economic and carbon footprint analyses of steam Rankine cycle 蒸汽朗肯循环的技术经济和碳足迹分析

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-09 DOI: 10.1002/apj.3118

Shu Yao Wong, Yick Eu Chew, Viknesh Andiappan, Shyam Lakshmanan, Dominic C. Y. Foo

{"title":"Techno-economic and carbon footprint analyses of steam Rankine cycle","authors":"Shu Yao Wong, Yick Eu Chew, Viknesh Andiappan, Shyam Lakshmanan, Dominic C. Y. Foo","doi":"10.1002/apj.3118","DOIUrl":"10.1002/apj.3118","url":null,"abstract":"Steam Rankine cycle (SRC), which is mainly utilised in power generation sector, faces external irreversibility in its daily operation causing inefficiency in the system. To address this issue, reheat Rankine cycle (RHRC) and regenerative Rankine cycle (RRC) have been widely studied and implemented in power plants to improve thermal efficiency and reduce external irreversibility of Rankine cycle. This study investigates the implementation of different RRC configurations in a combined heat and power plant, including RRC with modified thermal deaerator, RRC with open feed water heater (OFWH) and closed feed water heater (CFWH). A base case simulation model was first constructed using commercial simulation software Aspen HYSYS for the basic SRC system based on actual plant data. Various scenarios were then evaluated for their profitability and sustainability through techno-economic analysis (TEA) and carbon footprint analysis (CFA). From both analyses, the scenario of RRC with CFWH showed the greatest long-term potential, generating the highest annual profit of $ 771 691 and carbon footprint reduction of 14.63%, while RRC with modified thermal deaerator showed the greatest potential in the short run with the highest return of investment (ROI) of 201.51% and shortest payback period (PBP) of 0.50 year.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 systematic review: Biodegradation, mechanism, remediation strategies, and environmental impacts of microplastics 系统综述：微塑料的生物降解、机理、补救策略和环境影响

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-08 DOI: 10.1002/apj.3122

Nisha, Harish Chandra Joshi

引用次数: 0

Thermal oxidation of aviation lubricating oil: Mechanism, influencing factors, evaluation methods, and antioxidants 航空润滑油的热氧化：机理、影响因素、评估方法和抗氧化剂

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-02 DOI: 10.1002/apj.3114

Xiaojin Zhang, Xi Huang, Jing Li, Zhongping Tang, Jiangbing Wang

引用次数: 0

Study on causes and laws of crystallization blockage for dolomite tunnel drainage pipeline 白云岩隧道排水管道结晶堵塞原因及规律研究

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-02 DOI: 10.1002/apj.3115

Yonghu Tao, Chaoying Chen

{"title":"Study on causes and laws of crystallization blockage for dolomite tunnel drainage pipeline","authors":"Yonghu Tao, Chaoying Chen","doi":"10.1002/apj.3115","DOIUrl":"10.1002/apj.3115","url":null,"abstract":"In order to study the crystallization blockage law and crystallization mechanism of dolomite tunnel drainage system, based on the indoor model test, the simulated crystal blockage and growth process were simulated. The phase composition and microstructure of the crystal were analyzed by energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Combined with the pipeline crystal weighing, the crystal growth law and the internal cause of pipeline blockage were analyzed. The results show that the pipeline crystallization mechanism is divided into the first mechanism, the second mechanism, and the third mechanism. The crystallization blockage of the longitudinal and horizontal pipes are more serious, while the crystallization blockage of the ring pipes are less harmful. The crystallization is positively correlated with ion concentration, crystalline ions having a great influence on the blockage of pipeline crystallization, while noncrystalline ions having little influence. The crystal growth law is fast first and then slow, the crystallization affected by the coupling concentration of Cl−-K+-Na + ions, and positively correlated with the coupling concentration of CO32−-SO42−-Ca2+-Mg2+-Al3+ ions. Compared with the longitudinal pipes and the ring pipes, the horizontal pipes have more crystallization and higher degree of crystallization blockage per meter, while the crystallization degree of the longitudinal pipes are between the horizontal pipes and the ring pipes.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 oxygen-rich functional groups biochar for high-efficiency adsorption of herbicide and as a potential carrier for pH-responsive slow release 合成富氧功能基团生物炭，用于高效吸附除草剂并作为潜在的 pH 值响应型缓释载体

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-01 DOI: 10.1002/apj.3113

Yufeng Chen, Fangge Zhu, Sijie Jiang, Guorong Shi, Mei'e Zhong

{"title":"Synthesis of oxygen-rich functional groups biochar for high-efficiency adsorption of herbicide and as a potential carrier for pH-responsive slow release","authors":"Yufeng Chen, Fangge Zhu, Sijie Jiang, Guorong Shi, Mei'e Zhong","doi":"10.1002/apj.3113","DOIUrl":"10.1002/apj.3113","url":null,"abstract":"To improve the utilization rate of herbicides and reduce their environmental residues, it is urgent to develop a simple and low-cost method to prepare slow-release pesticides. In this study, a biochar (280CPFe) with a high surface area and rich oxygen-containing functional groups was synthesized by low temperature (280°C) boiling strategy, which was used as a carrier to prepare pH-responsive slow-release herbicide. The obtained biochar has a high adsorption capacity of 153.59 mg·g−1 for quinclorac (QNC). The release rates of QNC-280CPFe are 21%, 56%, and 90% at the initial pH of 3, 5, and 11, respectively. The controlled release behavior of QNC-280CPFe is related to its adsorption mechanism, in which the pore filling and functional group adsorption are mainly responsible for the adsorption of QNC on 280CPFe. Compared with QNC alone, QNC-280CPFe slow-release herbicide has a good control effect on Barnyard grass but does not affect the normal growth of rice. Therefore, this study provides a simple, low-cost cost, and environmentally friendly biochar carrier for preparing slow-release herbicide, improving its utilization rate and reducing its environmental pollution risk.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

High-entropy configuration strategy boosts excellent rate performance of layered oxide for sodium-ion batteries 高熵配置策略提升了钠离子电池层状氧化物的卓越速率性能

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-06-30 DOI: 10.1002/apj.3116

Qiuyun Cai, Xiangyu Liu, Haonan Hu, Pengfei Wang, Min Jia, Xiaoyu Zhang

{"title":"High-entropy configuration strategy boosts excellent rate performance of layered oxide for sodium-ion batteries","authors":"Qiuyun Cai, Xiangyu Liu, Haonan Hu, Pengfei Wang, Min Jia, Xiaoyu Zhang","doi":"10.1002/apj.3116","DOIUrl":"10.1002/apj.3116","url":null,"abstract":"Layered oxides are considered to be potential cathodes for sodium-ion batteries based on high theoretical capacity and ease of synthesis. However, the complex phase transition caused by interlayer sliding in layered oxides leads to poor cycling stability, which will hinder their further application. Here, we designed a newly O3-type layered cathode NaNi0.3Co0.2Cu0.1Mn0.2Ti0.2O2 based on high-entropy to achieve highly reversible phase transition behavior. It reveals 132 mAh g−1 at 0.2 C within 2–4 V increasing the energy density to 408 Wh kg−1 and it shows an outstanding rate capability of 90 mAh g−1 at 80 C (84.90% capacity retention after 1,500 cycles at 80 C). In-situ XRD shows that reasonable design of high-entropy components in layered material can achieve the purpose of delaying the occurrence of phase transition and DFT calculations show that the introduction of Co in transition metal layers can effectively improve the rate performance of the material. This work is of great significance in guiding the design and synthesis of highly stable layered cathode materials for sodium-ion batteries.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 ZrO2-NdO-based mixed nanomaterial using green capping agent and its functionalization as electrode material for energy devices: Pseudo capacitors and water splitting 使用绿色封端剂合成 ZrO2-NdO 基混合纳米材料并将其功能化作为能源设备的电极材料：伪电容器和水分离

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-06-30 DOI: 10.1002/apj.3119

Sundus Azhar, Khuram Shahzad Ahmad, Isaac Abrahams, Wang Lin, Ram K. Gupta, Munirah D. Albaqami, Saikh Mohammad, Mahwash Mahar Gul

{"title":"Synthesis of ZrO2-NdO-based mixed nanomaterial using green capping agent and its functionalization as electrode material for energy devices: Pseudo capacitors and water splitting","authors":"Sundus Azhar, Khuram Shahzad Ahmad, Isaac Abrahams, Wang Lin, Ram K. Gupta, Munirah D. Albaqami, Saikh Mohammad, Mahwash Mahar Gul","doi":"10.1002/apj.3119","DOIUrl":"10.1002/apj.3119","url":null,"abstract":"This study investigates the environmentally friendly synthesis of ZrO2-NdO mixed nanomaterial using green reducing and capping agents derived from the plant Amaranthus viridis. X-ray diffraction (XRD) analysis confirmed the successful synthesis of the mixed nanomaterial, revealing an optical band gap of 2.5 eV. The morphology was characterized by spherical-shaped particles with an average size ranging from 66 to 77 nm. The synthesized ZrO2-NdO mixed nanomaterial was evaluated for its potential application as an electrode material in energy devices, specifically for pseudocapacitors and water splitting studies. Electrochemical performance was assessed using cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) techniques. Notably, a specific capacitance of 573.5 F/g was achieved through CV at a scan rate of 2 mV/s. Fabricated electrocatalyst was further analyzed for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), and the results showed better over potential value of 164 mV for HER studies. The stability analysis further endorsed the large-scale commercialization possibility of ZrO-NdO-based electrode material.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Design and optimization of air-cooled supercapacitor thermal management system based on the corner deflectors and the inclined inlet and outlet 基于角导流板和倾斜进出口的风冷超级电容器热管理系统的设计与优化

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-06-27 DOI: 10.1002/apj.3104

Chaoying Xu, Guofu Li, Dianbo Ruan

{"title":"Design and optimization of air-cooled supercapacitor thermal management system based on the corner deflectors and the inclined inlet and outlet","authors":"Chaoying Xu, Guofu Li, Dianbo Ruan","doi":"10.1002/apj.3104","DOIUrl":"10.1002/apj.3104","url":null,"abstract":"In this paper, a novel air-cooled supercapacitor thermal management system (STMS) based on the corner deflectors and the inclined inlet and outlet was proposed. The temperature and velocity fields were simulated and analyzed by CFD. Moreover, the heat dissipation effect of different STMSs was analyzed against each other. The results showed that the STMS proposed had a better heat dissipation effect when the inclined angle of inlet and outlet was appropriate, in which the maximum temperature (Tmax) and the maximum temperature difference (ΔTmax) of the module could be reduced by 10.3% and 34.6%. And it is shown that the structure with inclined inlet and outlet plays an important role for the heat dissipation capability of the STMS proposed. And it has experimentally proven its heat dissipation ability. Consequently, the impacts of inclined angle (α), monomer spacing (dc), and the distance between monomer and module shell (dx, dy, and dz) on the heat dissipation effect were deeply analyzed. For the STMS arranged in four rows and three columns, it had a better heat dissipation effect when inclined angle was in the range of 40° to 50°. The results showed that the structural parameters had a large influence on the Tmax and ΔTmax. Besides, it had shown that the temperature curves of the Tmax and ΔTmax had a main trend of “decreasing and then increasing” when the monomer spacing as well as the distance between monomer and module shell are taken from 1 mm to 5 mm. It implies that a small spacing (1 mm to 2 mm) will hinder the air circulation and reduce heat dissipation, and a large spacing (3 mm to 5 mm) will reduce the average flow rate of air and reduce the efficiency of heat transfer.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Interactive experimental study on microgroove structure and drag-reducing additives in rotating disk apparatus 旋转盘装置中的微槽结构与减阻添加剂的互动实验研究

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-06-22 DOI: 10.1002/apj.3112

Ailian Chang, Le Huang, Benqing Huang, Kambiz Vafai

{"title":"Interactive experimental study on microgroove structure and drag-reducing additives in rotating disk apparatus","authors":"Ailian Chang, Le Huang, Benqing Huang, Kambiz Vafai","doi":"10.1002/apj.3112","DOIUrl":"10.1002/apj.3112","url":null,"abstract":"A series of interactive experiments are conducted to analyze the drag reduction technology with a rotating disk apparatus that combines microgroove structure and drag-reducing additives including polyethylene oxide (PEO), cetyltrimethyl ammonium chloride (CTAC), and sodium salicylate (NaSal). By varying the disk type, concentration of drag-reducing additives, temperature, and Reynolds number (Re), the corresponding drag reduction rates are obtained effectively. The experimental results indicate that adding CTAC strengthens the heat degradation and shear resistance of PEO; while PEO can enhance the ability of CTAC to form micellar structures and balance energy distribution at low concentrations. Moreover, the synergistic effect of these two additives presents a better drag reduction performance with a maximum drag reduction rate of 24.1%; while the microgroove structure enhances the effect of active drag reduction. Therefore, the combination of active and passive drag reduction technology broadens the application of energy saving and consumption reduction in hydraulic rotating machinery.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Analysis of HZSM-5 molecular sieve particles attrition behavior under fluidized conditions 流化条件下 HZSM-5 分子筛颗粒的损耗行为分析

IF 1.4 4区工程技术

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-06-18 DOI: 10.1002/apj.3111

Zhiwei Huang, Feng Gao, Yang Miao

{"title":"Analysis of HZSM-5 molecular sieve particles attrition behavior under fluidized conditions","authors":"Zhiwei Huang, Feng Gao, Yang Miao","doi":"10.1002/apj.3111","DOIUrl":"10.1002/apj.3111","url":null,"abstract":"The attrition behavior of HZSM-5 zeolite catalyst particles at room temperature was investigated in a laboratory-scale fluidized bed. The effects of three fluidization conditions on particle attrition were investigated, and a new attrition model was proposed. The results demonstrate that the attrition rate is inversely proportional to the initial particle size and proportional to the apparent gas velocity. After increasing to 80 μm and .3 m/s respectively, they are no longer the main factor affecting attrition. The effect of bed pressure on attrition rate is nonlinear, and the lowest attrition rate is obtained when the diameter-height ratio is 1:1. Unsteady attrition stage can be divided into initial stage and deceleration stage. Surface delamination dominates particle attrition throughout the whole process, and bulk fracture is the dominant mechanism only in the deceleration stage. Based on the Gwyn equation, a new attrition model in the form of cubic polynomial is established with the ratio of total attrition rate to unstable attrition rate P as a parameter. The model has high accuracy and repeatability and is suitable for various fluidization conditions. It can effectively describe the attrition process and change rule of particles and reasonably predict the fluidization attrition rate of particles.","PeriodicalId":49237,"journal":{"name":"Asia-Pacific Journal of Chemical Engineering","volume":"19 5","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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