Chemical Engineering Journal最新文献

{"title":"Potassium ferrate pretreatment enhances short-chain fatty acid production and phosphorus recovery in co-fermentation system of waste activated sludge and corn stover","authors":"Xintian Yu, Wei Zeng, Jiayu Zhang, Sijia Lu, Yongzhen Peng","doi":"10.1016/j.cej.2025.162052","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162052","url":null,"abstract":"Developing efficient technologies to recover carbon (C) and phosphorus (P) from waste activated sludge (WAS) is crucial for promoting low-carbon development and addressing P resource shortages. This study proposes a potassium ferrate (PF) pretreatment method to enhance the co-fermentation of WAS and corn straw (CS), facilitating the efficient and stable recovery of short-chain fatty acids (SCFAs) and vivianite, while exploring the underlying mechanisms and potential applications of this approach. PF pretreatment effectively promoted WAS hydrolysis and increased CS bioavailability. SCFAs yield in the co-fermentation group reached 6410.4 mg/L, representing a 79.6 % increase. Efficient SCFAs production was achieved under a SRT of 4–5 days. In the system, SCFAs-consuming bacteria were reduced and SCFAs-producing fermentative genera, such as <em>Paraclostridium</em>, <em>Terrisporobacter</em> and <em>Mobilitalea</em>, were enriched. Additionally, the presence of Fe promoted the enrichment of the <em>Clostridium</em> genus, which is capable of both fermentation and Fe reduction. PF pretreatment enhanced the release of organic matter, thereby shortening the fermentation time. P recovery was effectively achieved through chemical acidification and precipitation techniques. Under optimal recovery conditions (Fe/P = 1.5, pH = 7, 300 rpm), the P recovery efficiency reached 81.6 %, with vivianite accounting for 68.2 %–71.8 %. This method provides a theoretical foundation and technical support for the effective utilization of WAS","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"5 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The design of novel lithium salt additives: 4-benzonitrile-1,3-double (trimethylboric acid) lithium (LBTA) to endow inherent superior stability in high voltage lithium ion batteries","authors":"Lucheng Li, Meiling Liu, Peng Yang, Wenfeng Yuan, Jun Chen","doi":"10.1016/j.cej.2025.162078","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162078","url":null,"abstract":"Noted that electrolyte additives containing either B-O groups or nitrile groups are being capable of lifting battery capacity, but there is little literature on the ability to combine the advantages of both B-O groups and nitrile groups to jointly contribute to the capacity enhancement for NCM811-based lithium-ion batteries. Therefore, in the current work, a novel Lithium salt 4-benzonitrile-1,3-double (trimethylboric acid) lithium (LBTA) additive including two types groups (B-O and nitrile groups) is designed as a interface film promoter existed between the electrolyte and electrodes mainly to boost electrochemical performance in lithium-ion batteries under the high-voltage conditions. The results show that the capacity of the battery improve from 94.4 mAh g⁻¹ to 162.2 mAh g⁻¹ after 200 cycles at 4.5 V by adding 0.03 LBTA to the conference (1 mol/L LiPF₆ with the solvent: DMC: EMC: EC = 1:1:1, vot. %). Further investigation of the mechanism for the capacity enhancement of the battery evidenced via characterization and computational methods showed that LBTA can preferentially sacrifice on the the electrodes’ surface over other carbonate solvents to form a more stable and dense passivation layer, which derived from decomposition of LBTA can better stable electrodes’ microstructure and alleviate the decomposition of state-of-the-art batteries electrolytes, subsequently enhancing the stability of the rechargeable battery in the high-voltage conditions.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"12 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron and copper pillared clay photo-catalyzes carbon dioxide chemical reduction in aqueous medium","authors":"L. Gerardo Cornejo-Cornejo, Rubi Romero, Aída Gutiérrez-Alejandre, Alejandro Regalado-Méndez, Deysi Amado, Jose A. Hernández-Servin, Reyna Natividad","doi":"10.1016/j.cej.2025.162193","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162193","url":null,"abstract":"This work aimed to assess the catalytic activity of iron and copper pillared bentonite in the photoreduction of carbon dioxide towards organic compounds that are considered fuels, hydrogen carriers and brick molecules: methanol (M), formic acid (FA) and acetic acid (AA). The assessed variables were copper content, temperature, NaOH concentration and activation wavelength (254 nm and &gt; 400 nm). Fe and Cu content was quantified by atomic absorption: 13.62 % Fe (Fe-PILC), 2.51 % Cu (Cu/Fe-PILC-I), 3.86 % Cu (Cu/Fe-PILC-II). The addition of Fe and Cu increased specific surface area of bentonite, from 36 to 245, 137 and 98 m&lt;sup&gt;2&lt;/sup&gt; g&lt;sup&gt;−1&lt;/sup&gt; for Fe-PILC, Cu/Fe-PILC-I and Cu/Fe-PILC-II, respectively. FeO, Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;, Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;, CuO and Cu&lt;sub&gt;2&lt;/sub&gt;O were identified by X-ray photoelectron spectroscopy, XRD and TEM. By UV–Vis diffuse reflectance spectroscopy the band-gap energy of the synthesized materials was found to be ca. 2 eV. Pillaring increased total surface acidity, with Lewis acid sites rising by up to 63 % for Fe-PILC, and 395 % for Cu/Fe-PILC-II materials, respectively, in comparison to Bentonite. The optimization of the CO&lt;sub&gt;2&lt;/sub&gt; photo-reduction process was conducted by a Face Centered Central Composite Design (FCCD) and the optimal conditions maximizing FA (289.6 &lt;span&gt;&lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;m&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;o&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;l&lt;/mi&gt;&lt;mspace is=\"true\" width=\"0.166667em\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;C&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;A&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;μ&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;m&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;o&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;l&lt;/mi&gt;&lt;mspace width=\"0.166667em\" is=\"true\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;C&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;A&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;) and AA (28.7 &lt;span&gt;&lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;m&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;o&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;l&lt;/mi&gt;&lt;mspace is=\"true\" width=\"0.166667em\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;C&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;A&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"30 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting discharge performance of primary Mg-air batteries via adopting sodium citrate as electrolyte to suppress self-corrosion of Mg anode during discharge","authors":"Pingli Jiang, Ke Li, Ruiqing Hou, Di Mei, Junjie Yang, Shijie Zhu, Shaokang Guan","doi":"10.1016/j.cej.2025.162200","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162200","url":null,"abstract":"Primary magnesium (Mg)-air battery recently has attracted increasing interest as electrochemical energy storage system. However, the discharge performance of Mg anodes is critically limited by the severe self-corrosion of the anode and the accumulation of insoluble discharge products on the anode surface during discharge, inducing energy loss and surface blockage. In this work, sodium citrate (NaCA) solution as potential electrolyte, due to its high affinity to Mg²⁺, was explored for high-performance Mg-air batteries in comparison to the commonly used sodium chloride (NaCl) electrolyte. The utilization efficiency and specific capacity of Mg0.5Zn0.2Ge anode reached the highest compared to the previous reports, achieving 91.4 % and 2007 mAh g⁻¹ at 5 mA cm⁻² respectively, enhanced by 54 % compared to the counterparts in NaCl electrolyte. It is mainly attributed to the alleviated self-corrosion and the uniform dissolution of Mg0.5Zn0.2Ge anode during discharge in NaCA electrolyte. Mg-air battery tests with high-purity Mg and AZ31 alloy as comparisons as well further confirm the universal effectiveness of NaCA electrolyte and demonstrate that NaCA can sufficiently suppress the accumulation of discharge products by chelating with Mg²⁺ and induce pretty uniform dissolution of the anode materials during discharge, conferring boosted specific energy on the Mg-based anodes at low current density. The current work provides a strategic feasibility by adopting chloride-free electrolyte to develop advanced Mg-air batteries based on the intrinsic properties of Mg.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"14 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the mechanism of hunger stress enhancing methane production from low-strength wastewater: Insight from organic conversion and microbial metabolism perspective","authors":"Xiangru Song, Qiangqiang Jiao, Yicheng Lian, Biyue Xie, Jia Liu","doi":"10.1016/j.cej.2025.162170","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162170","url":null,"abstract":"Domestic wastewater, rich in biodegradable substances, presents a potential resource for methane production through anaerobic digestion. However, low organic concentrations in low-strength wastewater hinder microbial activity and degrade treatment efficiency. This study explored the regulatory effects of short-term hunger stress on microbial communities in an anaerobic fluidized bed membrane bioreactor (AFMBR) treating low-strength wastewater, aiming to enhance methane production and overall treatment performance. The results demonstrated that hunger stress had a significant impact on the adaptability of microbial communities, resulting in a 9.1% increase in COD removal efficiency and a 31.5 % increase in methane production. Notably, the relative abundance of key genera such as Methanosaetaceae and Bacteroidetes increased after hunger treatment, indicating a shift towards more efficient methanogenic pathways. Additionally, functional gene analysis revealed increased transcriptional activity, suggesting that hunger stress promoted metabolic processes essential for methane generation. This study highlights the innovative approach of using hunger stress to regulate microbial community dynamics in anaerobic systems, offering valuable insights into optimizing methane production from low-strength wastewater. The findings contribute to advancing anaerobic digestion technologies and improving the sustainability of wastewater treatment processes.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"19 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of co-introduction of soluble potassium and nitrogen on methanotrophs","authors":"Xinyue Bai, Dandan Huang, Wanli Yang, Ke Huang, Ning Wang, Jiang Wu, Rujie Zhang, Qiyong Xu","doi":"10.1016/j.cej.2025.162171","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162171","url":null,"abstract":"Aerobic methane (CH₄) oxidation in paddy fields is a critical process for mitigating fugitive CH₄ emissions. Potassium (K) fertilizer is commonly used to increase crop yields and quality in paddy fields, often in combination with nitrogen (N) fertilizer. However, the impact of the significant input of K and N on methanotrophs is unclear. This study employed zeolite-adsorbed K and N to examine their influence on methanotrophic activity. Control groups with non-adsorbed (R) and experimental groups with K alone (K0), and combined with nitrate (NO₃^–-N) (K1) or ammonium (NH₄⁺-N) (K2) were established. Incubations were conducted over six cycles with a 15 % volume ratio of CH₄ and oxygen. Results showed that both K and NO₃^–-N enhanced the abundance of Type I methanotrophs, with K particularly increasing the abundance of <em>Methylomonas</em> and NO₃^–-N primarily promoting the growth of <em>Methylocaldum</em>. Metabolomic analysis indicates K inhibits the synthesis of bioactive and reductive phenols, ketones, sesquiterpenoids, and unsaturated fatty acids. This effect was suggesting that K more readily entering the periplasmic space to stimulate adenosine synthesis, thereby energizing the soluble methane monooxygenase (sMMO) enzyme unique to <em>Methylomonas</em>. N contributes to energy metabolism by integrating into nitrogenous precursors, supporting community vitality. This study provides insights into the adaptation of methanotrophs in ecological niche differentiation and the co-introduction of K and N fertilizer management strategies to alleviate CH₄ emissions","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"38 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metagenomics and metatranscriptomics uncover the regulatory mechanism of nitrogen metabolism response to aggregation status of anammox bacteria","authors":"Ru Wang, Jinshi Lian, Wenyan Wang, James P. Shapleigh, Longxing Jiang, Yahui Wang, Yan Huang, Ling Xie, Liangwei Deng, Wenguo Wang, Lan Wang","doi":"10.1016/j.cej.2025.162179","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162179","url":null,"abstract":"Auto-aggregation of anammox bacteria is known to enhance their activities and growth, yet the regulatory mechanism remains elusive. We address this issue using two anammox reactors: Nspd (with the aggregation inhibitor-norspermidine) and Aggre (control). After the 155 days of incubation, the mean diameter of the Nspd sludge (232.09 μm) was significantly lower than the Aggre sludge (510.56 μm), and the Nspd sludge exhibited lower extracellular protein content (1.10 mg/g-VSS) compared to Aggre (1.33 mg/g-VSS) but higher neutral exopolysaccharide content (23.97 vs. 17.37 mg/g-VSS). It means that norspermidine leads to disaggregation of anammox bacteria by breaking and altering EPS structure which further decreased ammonia removal efficiency (80.0 % and 98.3 % in Aggre and Nspd). The negative impact was also verified by physical grinding separation method of anammox granules. Metagenomic and metatranscriptomic analysis indicated that a <em>Candidatus</em> Brocadia strain, Bro-MAG_N75, dominated in both reactors and disaggregation induced a decrease of cAMP and quorum sensing (QS) signals levels as well as the increase of the c-di-GMP level. Then, this modulation of signal levels up-regulated the expression levels of exopolysaccharides and extracellular proteins (two fold), however down-regulated those of the principal nitrogen metabolic enzymes of Bro-MAG_N75 by approximately 50 %, namely hydrazine synthase and hydrazine oxidoreductase. Concurrently, there was an up-regulation of non-mainstream nitrogen metabolic pathways, like DNRA and potential denitrification, which enhance metabolic diversity. These findings reveal the mechanism of aggregation through QS signals and second messengers regulating nitrogen metabolic activity and finally enhancing the activities and growth rate of anammox bacteria","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"19 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing ZnTPP performance as a carbonic anhydrase mimic for promoting CO2 absorption via circumferential and axial functionalization","authors":"Yuchen Zhou, Feng Lin, Zezhi Chen, Huijuan Gong, Donglin Jiang, Huiqiang Yu, Lu Chen","doi":"10.1016/j.cej.2025.162169","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162169","url":null,"abstract":"Mitigating climate change requires efficient carbon dioxide (CO₂) capture technologies. Carbonic anhydrase (CA), the most efficient enzyme for CO₂ hydration, holds great potential for enhancing CO₂ absorption. However, its high cost and low stability limit large-scale applications. CA mimics present a promising alternative but often suffer from poor dispersibility in absorbents, restricting their catalytic performance. To this end, this study proposes a functional modification strategy to enhance CA mimics by introducing basic hydrophilic groups. Zinc tetraphenylporphyrin (ZnTPP) was selected as a representative CA mimic, and four derivatives were synthesized: peripherally modified ZnTPP with hydroxyl (ZnTPP-OH) and amino (ZnTPP-NH₂) groups, as well as axially coordinated ZnTPP with lysine (ZnTPP-Lysine) and diethylenetriamine (ZnTPP-C₄H₁₃N₃) complexes. Absorption experiments demonstrated that the modified mimics significantly improved CO₂ absorption in both water and a 20 wt% potassium carbonate (K₂CO₃) solution. ZnTPP-OH exhibited the highest efficiency, increasing CO₂ absorption by 38.10 % in water and 28.20 % in K₂CO₃ solution, achieving 2.71- and 1.69-fold enhancements compared to unmodified ZnTPP. Characterization and density functional theory (DFT) calculations confirmed that hydrophilic modification enhanced dispersibility and increased exposure of active sites. Additionally, basic hydrophilic groups provided extra CO₂ adsorption sites, facilitating nucleophilic attack step during the catalytic hydration process.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"60 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic whole genome amplification using digital microfluidics for single-cell sequencing","authors":"Qingyu Ruan, Changrui Shi, Xiaoye Lin, Weidong Ruan, Minghui Xu, Chaoyong Yang, Yukun Ren","doi":"10.1016/j.cej.2025.162099","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162099","url":null,"abstract":"Single-cell whole-genome sequencing (WGS) is primarily utilized to investigate the investigation of genetic alterations between individual cells, particularly focusing on copy number variations. Prior to single-cell WGS, genome amplification of single cells is indispensable, but poses challenges due to the limited amount of DNA and nonuniform amplification. Here, this work presented a digital microfluidic platform to execute automated single-cell WGA based on multiple annealing and looping-based amplification cycles (digital MALBAC). This platform enables us to perform one-step MALBAC by dynamic droplet shuttling between cold plate and heat plate, implementing the entire procedure from single-cell isolation to WGA. Our study demonstrated that digital MALBAC had low genomic amplification bias and high reproducibility, enabling accurate identification of copy number variations (CNVs). Leveraging digital microfluidics with precise temperature control, digital MALBAC offers a user-friendly, rapid, and highly reproducible solution that integrates seamlessly into workflows, positioning it as a promising strategy for biological applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"30 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High efficiency and short-process for preparing high-purity VOSO4 electrolyte","authors":"Changqing Li, Tao Jiang, Jing Wen, Guangdong Yang, Tangxia Yu, Lan Zhang, Xinyu An, Guowang Hao, Xinyu Liu","doi":"10.1016/j.cej.2025.162151","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162151","url":null,"abstract":"In response to the global explosive growth demand for all-vanadium redox flow batteries in the field of energy storage, the development of efficient, low-cost, and short processes for VOSO₄ electrolyte production is a critical challenge. Here, we present a novel process for the preparation of high-purity VOSO₄ electrolyte, utilizing calcified vanadium slag as the raw material, with H₂SO₄-C₆H₈O₆ synergistic reduction leaching combined with solvent extraction. The synergistic leaching system simultaneously achieves efficient vanadium extraction and the reduction of VO₂⁺ to VO²⁺. This effectively mitigates the long-standing hydrolysis challenge in the vanadium recovery process from vanadium slag via the calcification method. Under the conditions of leaching at pH 1.6, with a C₆H8O₆ dosage of 10 g/L, a leaching time of 30 min, and a leaching temperature of 60 °C, the vanadium leaching efficiency is 98.15 %. The leachate undergoes direct three-stage counter current extraction, where impurities are selectively separated from VO²⁺. Subsequently, more than 99.31 % of vanadium is recovered as high-purity VOSO₄ electrolyte through stripping, the quality of VOSO₄ far exceeds the Grade I standard specified in China. The total recovery efficiency of vanadium has reached 97.47 %, an increase of 7 to 10 percentage points compared to the existing VOSO₄ preparation process. This new process is poised to revolutionize the traditional preparation pathway of VOSO₄ by significantly increases resource utilization, simplifies processes, reduces costs, and mitigates potential environmental hazards.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"18 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}