Journal of Environmental Chemical Engineering最新文献

筛选
英文 中文
Microporous layer in proton exchange membrane fuel cells: Advancement in materials and properties 质子交换膜燃料电池中的微孔层:材料和性能方面的进展
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-26 DOI: 10.1016/j.jece.2024.114220
Muhamad Ariff Amir Hamzah , Siti Kartom Kamarudin , Mahnoush Beygisangchin , Norazuwana Shaari , Roshasnorlyza Hazan , Zulfirdaus Zakaria
{"title":"Microporous layer in proton exchange membrane fuel cells: Advancement in materials and properties","authors":"Muhamad Ariff Amir Hamzah ,&nbsp;Siti Kartom Kamarudin ,&nbsp;Mahnoush Beygisangchin ,&nbsp;Norazuwana Shaari ,&nbsp;Roshasnorlyza Hazan ,&nbsp;Zulfirdaus Zakaria","doi":"10.1016/j.jece.2024.114220","DOIUrl":"10.1016/j.jece.2024.114220","url":null,"abstract":"<div><div>The microporous layer (MPL) is one of the components in the membrane electrode assembly (MEA), the heart of a proton exchange membrane fuel cell (PEMFC), and plays a vital role in managing mass transport and water management in PEMFCs, where these two aspects can negatively impact fuel cell performance if not tackled properly. Thus, the development of MPLs, in terms of material used, preparation methods, and its physical characteristics, has been widely investigated in recent years, to ensure its functionality for improved fuel cell performance. This paper aims to highlight recent MPL studies, focusing on the aforementioned development factors. This paper also addresses the challenges for optimum MPL performance and future trends in MPL development. Thus, the past findings and future outlooks discussed in this paper can act as a useful guideline for future works related to MPL development, to produce good quality MPLs for enhanced fuel cell performance.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114220"},"PeriodicalIF":7.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Unveiling the competitive mechanism between SO2 and PCDD/Fs on activated carbon adsorption 揭示二氧化硫和多氯二苯并对二恶英/多氯二苯并呋喃在活性炭吸附上的竞争机制
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-25 DOI: 10.1016/j.jece.2024.114254
Jianwen Lai , Peiyue Wang , Yunfeng Ma , Zhongkang Han , Heidelore Fiedler , Xiaoqing Lin , Xiaodong Li
{"title":"Unveiling the competitive mechanism between SO2 and PCDD/Fs on activated carbon adsorption","authors":"Jianwen Lai ,&nbsp;Peiyue Wang ,&nbsp;Yunfeng Ma ,&nbsp;Zhongkang Han ,&nbsp;Heidelore Fiedler ,&nbsp;Xiaoqing Lin ,&nbsp;Xiaodong Li","doi":"10.1016/j.jece.2024.114254","DOIUrl":"10.1016/j.jece.2024.114254","url":null,"abstract":"<div><div>In municipal solid waste incineration (MSWI) plants, activated carbon (AC) adsorption is the key technique for eliminating Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from flue gases. This research thoroughly investigates the potential competitive adsorption between SO<sub>2</sub> and PCDD/Fs and examines how adsorption at the center and the edge of the AC layer impacts the adsorption process. The findings show a decline in the removal efficiency of PCDD/Fs from 86.8 % to 84.2 % and further to 74.4 % when using SO<sub>2</sub> pre-treated (AC-A3) and H<sub>2</sub>SO<sub>4</sub>-impregnated (AC-B2) activated carbon, respectively. Multiple characterization methods reveal that sulfur elements occupy active sites within the inner pores of the activated carbon, reducing the availability of its pore structure, particularly affecting microporous more than mesoporous structures. DFT calculations suggest that the π-π EDA effect facilitates the adsorption of 2,3,7,8-Tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD), whereas dispersion force drive SO<sub>2</sub> adsorption. Comparisons among various oxygenated functional groups show that the organic acid anhydride (C<img>O-C<img>O) has better adsorption selectivity toward TCDD and less adsorption to SO<sub>2</sub>. This study provides a novel perspective on the adsorption mechanisms of PCDD/Fs on AC and the competitive dynamics of sulfur in the flue gas.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114254"},"PeriodicalIF":7.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
The removal of pollutants from synthetic bathroom greywater by coagulation-flocculation and filtration as a fit-for-purpose method 通过混凝-絮凝和过滤去除合成浴室中水污染物的适用方法
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-25 DOI: 10.1016/j.jece.2024.114250
Andrea Szabolcsik-Izbéki , Ildikó Bodnár , István Fábián
{"title":"The removal of pollutants from synthetic bathroom greywater by coagulation-flocculation and filtration as a fit-for-purpose method","authors":"Andrea Szabolcsik-Izbéki ,&nbsp;Ildikó Bodnár ,&nbsp;István Fábián","doi":"10.1016/j.jece.2024.114250","DOIUrl":"10.1016/j.jece.2024.114250","url":null,"abstract":"<div><div>It has been demonstrated that treated bathroom greywater (TBGW) is a useful substitute for fresh water for non-potable applications in households. Reuse of TBGW for irrigation, toilet flushing, car washing etc. offers a good opportunity to save drinking water and meet the sustainable development goals (SDGs). In this study, synthetic bathroom greywater (SBGW) was compiled in a controlled manner and used as a substitute for bathroom GW. Detailed statistical analysis also was performed to confirm the similarity between real and synthetic BGWs. SBGW is suitable for testing efficiency of applied treatment methods. It was confirmed that coagulation–flocculation with iron(III) chloride and sand filtration was the most effective method of the tested 7 systems. The best and affordable treatment combination generates good-quality treated SBGW (TSBGW) (pH = 7.54 ± 0.29, TURB = 0.54 ± 0.49 NTU, BOD<sub>5</sub> = 21 ± 10 mgL<sup>−1</sup>, COD = 32 ± 11 mgL<sup>−1</sup>, and TOC = 12.7 ± 6.7 mgL<sup>−1</sup>) for different non-potable purposes by complying with the regulated limit values for reuse. The elemental analysis of raw, TSBGW and tap water (TW) samples by MP-AES method provided further support for safe recycling. This study leads to the conclusion that the generation of TBGW by fit-for-purpose treatment can effectively meet the circular economy goals at household level. The recycling of GW is of limited importance in the European Union (EU) and legal regulations are not available in many countries. This study provides novel support for regulating the reuse of water in Eastern European countries.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114250"},"PeriodicalIF":7.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Differential insights into the distribution characteristics of archaeal communities and their response to typical pollutants in the sediments and soils of deep-water reservoir 对深水水库沉积物和土壤中古生物群落分布特征及其对典型污染物反应的不同见解
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-25 DOI: 10.1016/j.jece.2024.114256
Zelun Jiang , Qianli Huang , Kangping Cui , Guangwei Deng , Yuansheng Huang , Kaifeng Yu , Chen-Xuan Li , Yihan Chen
{"title":"Differential insights into the distribution characteristics of archaeal communities and their response to typical pollutants in the sediments and soils of deep-water reservoir","authors":"Zelun Jiang ,&nbsp;Qianli Huang ,&nbsp;Kangping Cui ,&nbsp;Guangwei Deng ,&nbsp;Yuansheng Huang ,&nbsp;Kaifeng Yu ,&nbsp;Chen-Xuan Li ,&nbsp;Yihan Chen","doi":"10.1016/j.jece.2024.114256","DOIUrl":"10.1016/j.jece.2024.114256","url":null,"abstract":"<div><div>This study focused on the Fengshuba deep-water reservoir in South China, and systematically explored the distribution characteristics of archaeal communities in the sediment and soil in water level fluctuation zones and their response mechanisms to typical pollutants. The results show that <em>Euryarchaeota</em> and <em>Bathyarchaeota</em> are the dominant phyla in sediment archaeal communities, while <em>Thaumarchaeota</em> dominates in soil. The absolute abundance of archaea in the sediments was lower than that in the soils, but the diversity and richness of archaeal communities were higher than those in the soils. Seasonal changes affected the composition of sediment archaeal communities, and the archaeal compositions in the two habitats also showed significant differences. The neutral community model indicates that the assembly of archaeal communities in sediments is mainly governed by stochastic processes, while deterministic processes dominate in soils. The responses of archaeal communities to pollutants in the two habitats were significantly different. Among them, the carbon-nitrogen ratio and tetracycline concentration are the key factors driving seasonal changes in the archaeal communities in the sediment. Structural equation modeling further showed that the archaeal community in the sediment was positively correlated with organochlorine pesticides and antibiotics, while the archaeal community in the soil showed an opposite trend. This study provides new insights into the complexity of interactions between archaeal communities and typical contaminants in reservoir systems.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114256"},"PeriodicalIF":7.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Activation of peroxymonosulfate by boron nitride loaded with Co mixed oxides and boron vacancy for ultrafast removal of drugs in surface water 氮化硼负载钴混合氧化物和硼空位活化过一硫酸盐,超快去除地表水中的药物
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114241
Hongda Zhang , Yunzhe Zhao , Chenxu Wang , Baolin Liu , Yong Yu
{"title":"Activation of peroxymonosulfate by boron nitride loaded with Co mixed oxides and boron vacancy for ultrafast removal of drugs in surface water","authors":"Hongda Zhang ,&nbsp;Yunzhe Zhao ,&nbsp;Chenxu Wang ,&nbsp;Baolin Liu ,&nbsp;Yong Yu","doi":"10.1016/j.jece.2024.114241","DOIUrl":"10.1016/j.jece.2024.114241","url":null,"abstract":"<div><div>The mediation of vacancy in catalysts is crucial for the enhancement of oxidant activation. Here the boron nitride loaded with Co mixed oxides (Co<sub>2</sub>O<sub>3</sub>-CoO) and boron vacancy (B<sub>v</sub>) catalyst (Co/BN-X) was prepared to degrade sulfamethoxazole (SMX) by activating peroxymonosulfate (PMS). Under dark condition, Co/BN-3+PMS system can completely remove SMX in surface water within 15 min, and its removal efficiency constant (0.5154 min<sup>−1</sup>) was 4.0 and 6.7 times greater than those of Co/BN-2+PMS (0.1284 min<sup>−1</sup>) and Co/BN-1+PMS (0.0771 min<sup>−1</sup>), respectively. The system showed excellent performance in different influencing factors and cyclic experiments, and exhibited good practical application potential in secondary effluent. Electron paramagnetic resonance, radical quenching and electrochemical tests certified that singlet oxygen (<sup>1</sup>O<sub>2</sub>) was the major active species, followed by •O<sub>2</sub><sup>–</sup>, and SO<sub>4</sub><sup>•–</sup>, further elaborating the activation pathway of PMS in Co/BN-3+PMS system. The density functional theory (DFT) calculations confirmed that CoO and PMS-O<sub>2</sub> sites were the main reaction sites, and the existence of B<sub>v</sub> reduced the adsorption energy of Co/BN-3 for PMS. This work reveals the synergistic effect between Co oxide sites and B<sub>v</sub> on the catalyst surface and offers a potential modification method to accelerate Fenton-like reaction.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114241"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Candle soot-modified rPET electrospun nanofibrous membrane for separating on-demand oil-water mixture and emulsions 用于按需分离油水混合物和乳液的烛烟改性 rPET 电纺纳米纤维膜
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114235
Panchan Dansawad , Lixia Cao , Shengyong Zhao , Haigang Gao , Muhammad Sheraz , Cong Xue , Yanxiang Li , Wangliang Li
{"title":"Candle soot-modified rPET electrospun nanofibrous membrane for separating on-demand oil-water mixture and emulsions","authors":"Panchan Dansawad ,&nbsp;Lixia Cao ,&nbsp;Shengyong Zhao ,&nbsp;Haigang Gao ,&nbsp;Muhammad Sheraz ,&nbsp;Cong Xue ,&nbsp;Yanxiang Li ,&nbsp;Wangliang Li","doi":"10.1016/j.jece.2024.114235","DOIUrl":"10.1016/j.jece.2024.114235","url":null,"abstract":"<div><div>The CS-rPET electrospun nanofibrous membrane is fabricated from recycled polyethylene terephthalate (rPET) through electrospinning and enhanced with candle soot (CS) to separate oil-water mixtures and emulsions when pre-wetted by oil or water. Using rPET polymers and CS waste reduces the environmental impact of plastic bottle waste and improves its value. The CS-rPET electrospun nanofibrous membrane showed excellent separation performance in oil-water mixtures, achieving over 81.18 % and 71.38 % of separation efficiency through 40 separation cycles after pre-wetting by oil and after washing with ethanol and pre-wetting by water, respectively. The membrane maintained high separation performance after being pre-wetted by oil for water-in-oil emulsions with efficiencies above 99 % and flux exceeding 12,200 L m<sup>−2</sup> h<sup>−1</sup>. Similarly, the efficiencies remained above 98 % for oil-in-water emulsions after being pre-wetted by water, with a flux over 8000 L m<sup>−2</sup> h<sup>−1</sup>. Additionally, the CS-rPET electrospun nanofibrous membrane exhibited high separation efficiencies above 97 % and flux over 14,000 L m<sup>−2</sup> h<sup>−1</sup> after pre-wetting by oil and 7700 L m<sup>−2</sup> h<sup>−1</sup> after pre-wetting by water in harsh environmental conditions. Its adaptability of switchable wettability on-demand after pre-wetting by oil or water highlights its potential for a wide range of challenging oil-water separation applications. However, multiple separation cycles, separation efficiency and flux were reduced, indicating the necessity to improve the membrane's efficiency and reduce the chance of water accumulation in multicycle separation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114235"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Orange carbon dot nanomaterial as optical/visual sensing platforms for morin and a biomass booster for plant seedlings 橙色碳点纳米材料作为莫林的光学/视觉传感平台和植物幼苗的生物量促进剂
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114244
Zhenhua Yang , Xintong Yang , Quanxi Zhang , Xianyun Zheng , Yuexia Zhang , Chuan Dong
{"title":"Orange carbon dot nanomaterial as optical/visual sensing platforms for morin and a biomass booster for plant seedlings","authors":"Zhenhua Yang ,&nbsp;Xintong Yang ,&nbsp;Quanxi Zhang ,&nbsp;Xianyun Zheng ,&nbsp;Yuexia Zhang ,&nbsp;Chuan Dong","doi":"10.1016/j.jece.2024.114244","DOIUrl":"10.1016/j.jece.2024.114244","url":null,"abstract":"<div><div>The precise regulation of morin levels in both diet and medicine is essential to evaluate the nutritional quality of food. Furthermore, plant yield is attracting considerable attention in the agricultural and herbal industries. Accordingly, the sensing platforms based on orange S and N co-doped carbon dots (SNCDs) were developed to detect morin through photoluminescence signals in aqueous solutions, solid matrices, and zebrafish. These sensing platforms exhibited excellent selectivity toward morin and possessed good anti-interference abilities, achieving limits of detection with 0.31 and 0.19 μM in the aqueous solution and solid state, respectively. Furthermore, the application of the as-prepared SNCDs at low concentration enhanced plant growth (using soybean seedlings as a model). The biological effects may be attributed to the promotion of light reaction and excess light reaction-induced injury. These findings offer novel insights into potential applications of SNCDs in sustainable agriculture and environmental monitoring.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114244"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Electron transfer mechanism mediated MOF-derived nanoflowers catalyst for promoting peroxymonosulfate activation and ciprofloxacin degradation 电子传递机制介导的 MOF 衍生纳米花催化剂促进过一硫酸盐活化和环丙沙星降解
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114239
Hao Li , Xiangyi Gong , Hua Tong , Fu Feng , Dajung Ren
{"title":"Electron transfer mechanism mediated MOF-derived nanoflowers catalyst for promoting peroxymonosulfate activation and ciprofloxacin degradation","authors":"Hao Li ,&nbsp;Xiangyi Gong ,&nbsp;Hua Tong ,&nbsp;Fu Feng ,&nbsp;Dajung Ren","doi":"10.1016/j.jece.2024.114239","DOIUrl":"10.1016/j.jece.2024.114239","url":null,"abstract":"<div><div>Three MOF-derived nanoparticles were synthesized by manganese doping and calcination of ZIF-67 precursor. The surface physicochemical properties of these materials were compared using SEM, TEM, XRD, FTIR and BET analyses. Among them, cobalt-manganese oxide nanoflowers (CoMn<sub>2</sub>O<sub>4</sub>-NFs) exhibited excellent catalytic performance in the degradation of ciprofloxacin (CIP) by activated peroxymonosulfate (PMS), achieving 100 % removal within 30 minutes with a rate constant (k<sub>obs</sub>) of 0.2960 min<sup>−1</sup>. The catalytic mechanism was elucidated by quenching experiments, EPR, electrochemical analysis and X-ray photoelectron spectroscopy (XPS). The results show that the non-radical oxidation process was initiated mainly by direct electron transfer and <sup>1</sup>O<sub>2</sub> (∼80 %), with a small contribution from the radical SO<sub>4</sub><sup>·-</sup> (∼20 %). The nano-confined structure on the surface of CoMn<sub>2</sub>O<sub>4</sub>-NFs makes it easy to combine with PMS to form CoMn<sub>2</sub>O<sub>4</sub>-NFs/PMS* complexes, which directly capture electrons from CIP to complete the degradation process. The double redox cycle of cobalt-manganese ions and oxygen vacancies on CoMn<sub>2</sub>O<sub>4</sub>-NFs could accelerate the electron transfer process. CoMn<sub>2</sub>O<sub>4</sub>-NFs maintained high removal efficiency (&gt;99 %) over a wide pH range (3−11), with minimal interference from most environmental anions, demonstrating strong stability and interference resistance. This study provides insights into using metal-based materials for oxidative degradation of organic pollutants via non-radical pathways.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114239"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 modeling of CO2 capture in a non-isothermal circulating fluidized bed riser using K2CO3 solid sorbent 使用 K2CO3 固体吸附剂在非等温循环流化床立管中捕获二氧化碳的 CFD 建模
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114247
Amolwan Sornvichai , Muhammad Adnan , Nouman Ahmad , Ratchanon Piemjaiswang , Pornpote Piumsomboon , Benjapon Chalermsinsuwan
{"title":"CFD modeling of CO2 capture in a non-isothermal circulating fluidized bed riser using K2CO3 solid sorbent","authors":"Amolwan Sornvichai ,&nbsp;Muhammad Adnan ,&nbsp;Nouman Ahmad ,&nbsp;Ratchanon Piemjaiswang ,&nbsp;Pornpote Piumsomboon ,&nbsp;Benjapon Chalermsinsuwan","doi":"10.1016/j.jece.2024.114247","DOIUrl":"10.1016/j.jece.2024.114247","url":null,"abstract":"<div><div>The study investigates the use of potassium-based solid sorbents for CO<sub>2</sub> capture in a circulating fluidized bed reactor (CFBR), a promising technology in various industries. The numerical simulations were employed to explore the process of CO<sub>2</sub> capture in a three-dimensional (3D) CFBR using K<sub>2</sub>CO<sub>3</sub> adsorbents with a reactive multiphase Eulerian-Eulerian approach. After successfully validating the model for CO<sub>2</sub> removal concentration with the experimental data, the key parameters like cooling water temperature, flow rate, distance between cooling stages, diameter, and configuration of cooling tubes were analyzed to optimize K<sub>2</sub>CO<sub>3</sub> performance for CO<sub>2</sub> adsorption. Results show adjustments to these parameters can enhance CO<sub>2</sub> removal rates. Lowering cooling water temperature improves K<sub>2</sub>CO<sub>3</sub> performance but increases energy consumption. Increasing the cooling water flow rate slightly boosts CO<sub>2</sub> removal efficiency. Changes in cooling stage gaps have minimal impact on CO<sub>2</sub> removal, but larger cooling tube diameters enhance CO<sub>2</sub> removal rates by increasing heat transfer surface area. Different riser configurations affect CO<sub>2</sub> removal, with staggered cooling tube arrangements showing superior particle distribution and CO<sub>2</sub> removal efficiency. Overall, decreasing temperature improves K<sub>2</sub>CO<sub>3</sub> performance by favorably shifting reaction equilibrium.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114247"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Highly sensitive and selective L-lactate monitoring in complex matrices with a ratiometric fluorescent sensor RhB@Zn-MOF 利用比率荧光传感器 RhB@Zn-MOF 监测复杂基质中的高灵敏度和高选择性 L-乳酸盐
IF 7.4 2区 工程技术
Journal of Environmental Chemical Engineering Pub Date : 2024-09-24 DOI: 10.1016/j.jece.2024.114233
Bo Jing, Xinke Xu, Jingze Wang, Changyan Sun, Wenjun Li, Zhidong Chang
{"title":"Highly sensitive and selective L-lactate monitoring in complex matrices with a ratiometric fluorescent sensor RhB@Zn-MOF","authors":"Bo Jing,&nbsp;Xinke Xu,&nbsp;Jingze Wang,&nbsp;Changyan Sun,&nbsp;Wenjun Li,&nbsp;Zhidong Chang","doi":"10.1016/j.jece.2024.114233","DOIUrl":"10.1016/j.jece.2024.114233","url":null,"abstract":"<div><div>L-lactate is an essential biomarker in clinical diagnostics and food quality assessment. This study introduces a novel ratiometric fluorescence sensor, RhB@Zn-MOF, which was specifically designed for the sensitive and selective detection of L-lactate. Through the strategic incorporation of Rhodamine B (RhB) into Zn-MOF, RhB@Zn-MOF was synthesized, exhibiting dual-emission properties and could effectively distinguish L-lactate in complex biological and food matrices such as milk and sweat based on the competitive absorption mechanism. Notably, the sensor achieves a low detection limit of 0.091 μM and demonstrates excellent stability and reproducibility in varied conditions. Furthermore, the integration of the sensor with smartphone technology enables rapid, real-time analysis, showcasing potential applications in sports medicine, clinical environments, and the food industry.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114233"},"PeriodicalIF":7.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信