Separation and Purification Technology最新文献

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Design and optimization of extractive distillation for separating methyl ethyl ketone/isopropanol/n-heptane ternary azeotropes 萃取精馏分离甲乙基酮/异丙醇/正庚烷三元共沸物的设计与优化
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135559
Shuangxin Fan, Yan Cheng, Xinyuan Cheng, Tong Xia, Jing Li, Jun Li, Lanyi Sun
{"title":"Design and optimization of extractive distillation for separating methyl ethyl ketone/isopropanol/n-heptane ternary azeotropes","authors":"Shuangxin Fan, Yan Cheng, Xinyuan Cheng, Tong Xia, Jing Li, Jun Li, Lanyi Sun","doi":"10.1016/j.seppur.2025.135559","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135559","url":null,"abstract":"In pharmaceutical manufacturing, there is a widespread presence of industrial waste liquids containing methyl ethyl ketone, isopropanol, and n-heptane. This work employs extractive distillation to separate this multi-azeotropic system. Firstly, the conventional extractive distillation process (CED) is designed, and the optimal parameters of the three-objective trade-off are obtained by multi-objective optimization. Then, the side-stream distillation, intermediate reboiler and heat integration enhancement methods are introduced to reduce energy consumption and costs. The results demonstrate that the double side-stream extractive distillation with intermediate reboiler and heat integration process (DSSEDIR-HI) shows the best economic and environmental performance. Compared to the CED process, the total annual cost is reduced by 23.9 %, CO<sub>2</sub> emissions are decreased by 42.5 %, and thermodynamic efficiency is improved by 68.4 %. This study provides a sustainable pathway for the separation of methyl ethyl ketone/isopropanol/n-heptane mixture.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"57 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241849","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}
引用次数: 0
Total recovery of bacterioruberin from Arthrobacter via sustainable one-cycle extraction: A bench-scale guide to solvent selection and process intensification 通过可持续的单周期提取从节杆菌中完全回收细菌绿霉素:溶剂选择和工艺强化的实验规模指南
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135483
Angie V. Caicedo Paz, Daniele Giuffrida, Luigi Mondello, Alessia Tropea, Francesca Rigano, Fabiane O. Farias, Marcelo Franco, Cassamo U. Mussagy
{"title":"Total recovery of bacterioruberin from Arthrobacter via sustainable one-cycle extraction: A bench-scale guide to solvent selection and process intensification","authors":"Angie V. Caicedo Paz, Daniele Giuffrida, Luigi Mondello, Alessia Tropea, Francesca Rigano, Fabiane O. Farias, Marcelo Franco, Cassamo U. Mussagy","doi":"10.1016/j.seppur.2025.135483","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135483","url":null,"abstract":"Bacterioruberin (BR) is an uncommon C₅₀ natural carotenoid known for its exceptional antioxidant and antibacterial properties, making it highly promising for use in the food, pharmaceutical, and cosmeceutical sectors. Despite this potential, its commercial use is hindered by challenges in <em>downstream</em> processing. This research offers a comparative analysis of three methods to fully recover BR from <em>Arthrobacter</em> sp. CP30, a microorganism that produces approximately 95 % of BR and BR-derivatives. The first strategy, utilizing traditional methanol extraction, achieved a recovery rate of about 80 %, which could be improved to 100 % with optimized conditions. The second strategy employed binary solvent mixtures of alcohols and fatty acids, allowing for complete BR recovery under gentle extraction conditions. The third strategy combined green biosolvents, such as bio-based ethanol, with microwave-assisted extraction (MAE), resulting in a 100 % recovery rate and an Eco-Scale score of 89, indicating high environmental sustainability. In all methods, solvent selection was selected by COSMO-SAC modeling, which identified favorable molecular interactions between BR and the solvents tested. Overall, this work provides an efficient, sustainable, and scalable framework for BR recovery and serves as a practical guide for researchers and professionals to tailor extraction protocols according to their specific laboratory or industrial setups, to accomplish the full potential of high-value C₅₀ carotenoids.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"26 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241847","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}
引用次数: 0
Bionic multifunctional copper mesh for self-cleaning, oil/water separation and fog collection 仿生多功能铜网,自清洁,油/水分离和雾收集
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135324
Jionghong Liang, Xiaolong Tang, Xiwang Jiang, Yonghui Zhang, Xutong Zhou, Haixing Feng, Junchong Chen, Rong Huang, Jiangwen Liu
{"title":"Bionic multifunctional copper mesh for self-cleaning, oil/water separation and fog collection","authors":"Jionghong Liang, Xiaolong Tang, Xiwang Jiang, Yonghui Zhang, Xutong Zhou, Haixing Feng, Junchong Chen, Rong Huang, Jiangwen Liu","doi":"10.1016/j.seppur.2025.135324","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135324","url":null,"abstract":"With the recovery of crude oil leakage becoming an integral part of the carbon neutrality strategy and the increasing scarcity of global freshwater resources, achieving efficient treatment of oil-water mixtures and sustainable access to water resources is a pressing scientific challenge that needs to be addressed urgently. Therefore, this study combines wire electrical discharge machining (WEDM) technology with an in-situ growth strategy to construct a multifunctional superhydrophobic bionic copper mesh (MS-BS) inspired by the superhydrophobic and self-cleaning properties of gecko skin. This design exhibits outstanding comprehensive performances in terms of self-cleaning, mechanical and chemical stability, corrosion resistance, oil-water separation ability, and fog collection efficiency. The MS-BS demonstrates good antifouling and self-cleaning capacity with a water contact angle (CA) of 161.5° and a rolling angle (RA) of 0.1°. After 200 abrasion cycles (1.63 KPa), the MS-BS remains hydrophobic (CA = 140°) and shows good resistance to different pH solutions, confirming superior mechanical and chemical stability. In addition, the MS-BS is applied for highly efficient oil-water mixture separation, achieving a maximum separation efficiency of about 98.5 % and the highest separation flux of 160,000 L·m<sup>−2</sup>·h<sup>−1</sup>, and even after 50 operation cycles, it maintains 96 % separation efficiency. In addition, the MS-BS provides a potential fog collection strategy, showing a fog collection efficiency of 3386 mg·cm<sup>−2</sup>·h<sup>−1</sup>, which is 12.7 times greater than that of the ordinary copper sheet. This bionic integrated surface design strategy presents a new research path for developing high-performance environmental governance materials and holds broad application prospects.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"24 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247240","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}
引用次数: 0
Ultra deep desulfurization of diesel over Cu/Ce-graphitic carbon nitride under visible light: a sustainable approach for clean fuel production 可见光下Cu/ ce石墨氮化碳对柴油的超深度脱硫:清洁燃料生产的可持续方法
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135564
Lei Wang, Shang Gao, Huili Huang, Yincun Lv, Muhammad Yaseen, Shuzhen Li
{"title":"Ultra deep desulfurization of diesel over Cu/Ce-graphitic carbon nitride under visible light: a sustainable approach for clean fuel production","authors":"Lei Wang, Shang Gao, Huili Huang, Yincun Lv, Muhammad Yaseen, Shuzhen Li","doi":"10.1016/j.seppur.2025.135564","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135564","url":null,"abstract":"The combustion of sulfur-containing diesel fuels releases harmful pollutants such as sulfur oxides and sulfate particulate matter, posing significant environmental and health risks. Traditional desulfurization methods often suffer from carbon and hydrogen loss, reducing fuel efficiency. This study addresses these challenges by developing a Cu/Ce co-doped graphitic carbon nitride (Cu-Ce/CN) photocatalyst via a hydrothermal method for ultra-deep desulfurization under visible light. Comprehensive characterization techniques (SEM, XPS, XRD, UV–Vis DRS, and BET) confirmed the uniform dispersion of Cu and Ce on the CN matrix, with Cu existing as Cu<sup>+</sup>/Cu<sup>2+</sup> and Ce as Ce<sup>3+</sup>/Ce<sup>4+</sup>, forming an “electron bridge” to enhance charge separation. The optimized Cu-Ce/CN (1:1 ratio) exhibited a narrowed bandgap (2.40 eV), extended visible-light absorption, and a high surface area, facilitating efficient generation of reactive oxygen species. Under optimal conditions, the system achieved a 99.27 % desulfurization ratio within 60 min, degrading refractory sulfides like dibenzothiophenes (DBTs) into sulfoxides/sulfones via photocatalytic oxidation. Cycling tests demonstrated excellent stability (95.8 % efficiency after 10 cycles), with XRD confirming structural integrity. This work presents a sustainable and efficient strategy for diesel desulfurization.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"9 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241846","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}
引用次数: 0
Fixed-bed breakthrough curve modeling for effective samarium adsorption on radiated-grafted-vinyl acetate-polypropylene fibrous 辐射接枝醋酸乙烯-聚丙烯纤维有效吸附钐的固定床突破曲线模拟
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135233
Mehdi Asadollahzadeh, Rezvan Torkaman, Meisam Torab-Mostaedi, Fateme Motamedi Rad
{"title":"Fixed-bed breakthrough curve modeling for effective samarium adsorption on radiated-grafted-vinyl acetate-polypropylene fibrous","authors":"Mehdi Asadollahzadeh, Rezvan Torkaman, Meisam Torab-Mostaedi, Fateme Motamedi Rad","doi":"10.1016/j.seppur.2025.135233","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135233","url":null,"abstract":"The research involved exposing polypropylene polymer fibers to gamma-ray irradiation in order to attach vinyl acetate monomers to the fibers. Next, the grafted polymer was hydrolyzed and then placed in a solution containing diglycolic anhydride and 1,4-dioxane to attach the ligand, resulting in the creation of a modified polymer adsorbent with effective samarium ion adsorption capabilities. Various factors influencing samarium adsorption were studied, such as contact time, pH levels, temperature, adsorbent weight, and samarium ion concentration. The structure of the adsorbent was analyzed using FTIR and SEM techniques, revealing a significant grafting percentage with a well-structured material. Both equilibrium isotherms and kinetics were examined, with the results aligning with the Langmuir and pseudo second order models. Research involving the adsorption process of rare earths, copper, zinc, and cobalt indicated that samarium and other rare earth ions are specifically adsorbed at a pH of 3, while cobalt ions do not exhibit significant adsorption. This finding suggests that this process could be a viable option for treating leach solutions resulting from the recovery of samarium and cobalt magnets. The research conducted a comparison of five distinct models for breakthrough curves to simulate the dynamic adsorption process. Modeling the breakthrough curve characteristics aided in comprehending the dynamic behavior of the selected adsorbent during the adsorption of samarium.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"105 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241848","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}
引用次数: 0
Thermo-responsive ionic liquids-mediated extraction of Rosa roxburghii Tratt polysaccharides 热响应性离子液体介导的刺梨多糖提取
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135441
Changyong Cai, Yunlan Chen, Zhonghai Tang, Zhijian Tan
{"title":"Thermo-responsive ionic liquids-mediated extraction of Rosa roxburghii Tratt polysaccharides","authors":"Changyong Cai, Yunlan Chen, Zhonghai Tang, Zhijian Tan","doi":"10.1016/j.seppur.2025.135441","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135441","url":null,"abstract":"<em>Rosa roxburghii</em> Tratt (<em>R. roxburghii</em>) polysaccharides have important application value in the fields of food and medicine due to their significant antioxidant and hypoglycemic activities. However, conventional extraction methods have low efficiency and poor environmental friendliness. In this study, a sustainable and highly efficient approach for <em>R. roxburghii</em> Tratt extraction was developed using thermo-responsive ionic liquids (TRILs). The choline chloride/lithium bis(trifluoromethylsulfonyl)imide system exhibited the optimal performance, enabling facile polysaccharide recovery <em>via</em> temperature regulation. It was found that the response temperature of TRIL was between 20 and 80 °C. The optimized extraction process achieved a maximum polysaccharide yield of 212.0 mg/g. Changing the temperature can change the hydrophilicity and hydrophobicity of TRIL, leading to the enrichment of polysaccharides in the aqueous phase and the recovery of polysaccharides. Additionally, this TRIL displayed excellent reusability, retaining an extraction capacity of 195.0 mg/g (retention rate 91.9 %) after five cycles. Subsequent purification yielded three polysaccharide fractions (RTFP-T1, RTFP-T2, and RTFP-T3). RTFP-T3 displayed superior antioxidant activity, scavenging 97.13 % of ABTS and 79.79 % of DPPH radicals. This study not only provides innovative solutions for the sustainable extraction of <em>Rosa roxburghii</em> Tratt polysaccharides, but also lays the technical foundation for the industrial application of natural active polysaccharides.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"19 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247180","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}
引用次数: 0
Selective removal of Fe and Al by raw and functionalized rice husk silicas as a pre-treatment step of phosphogypsum leachates for subsequent recovery of rare earth elements 原料和功能化稻壳二氧化硅选择性去除铁和铝作为磷石膏浸出液的预处理步骤,随后回收稀土元素
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-08 DOI: 10.1016/j.seppur.2025.135360
Rafaela Moura Rodrigues, Thiago Roger Zago, Mariele Samuel do Nascimento, Fabio Andrei Duarte, Luis Felipe Oliveira Silva, Tito José Crissien, Salah Knani, Sabrina F. Lütke, Guilherme Luiz Dotto
{"title":"Selective removal of Fe and Al by raw and functionalized rice husk silicas as a pre-treatment step of phosphogypsum leachates for subsequent recovery of rare earth elements","authors":"Rafaela Moura Rodrigues, Thiago Roger Zago, Mariele Samuel do Nascimento, Fabio Andrei Duarte, Luis Felipe Oliveira Silva, Tito José Crissien, Salah Knani, Sabrina F. Lütke, Guilherme Luiz Dotto","doi":"10.1016/j.seppur.2025.135360","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135360","url":null,"abstract":"Rare earth elements (REE) recovery from phosphogypsum by acid leaching has already proven effective. However, the obtained leachates often contain high concentrations of interfering ions, such as Fe<sup>3+</sup> and Al<sup>3+</sup>, which hinder subsequent REE recovery steps. This work proposes a novel pre-treatment approach for phosphogypsum leachates, focusing on the removal of Fe<sup>3+</sup> and Al<sup>3+</sup> through adsorption using raw rice husk-derived silica (Si) and rice husk-derived silica functionalized with 3-aminopropyl triethoxysilane (Si-APTS) and 2,6-pyridinedicarboxylic acid (Si-APTS-CO). The characterization results demonstrated the success of the silica production and functionalization. The Fe<sup>3+</sup> and Al<sup>3+</sup> adsorption onto the raw and functionalized rice huks-derived silicas was highly pH-dependent, reaching 30 % Fe<sup>3+</sup> removal at pH 5.0 and 90 % Al<sup>3+</sup> removal at pH 5.5. The adsorption of Fe<sup>3+</sup> ions was faster, and the pseudo-second-order model demonstrated greater suitability to the kinetic data of both metal ions. The Freundlich model fitted the equilibrium data well. The highest <em>q</em><sub><em>e</em></sub> values for Fe<sup>3+</sup> and Al<sup>3+</sup> were, respectively, 34.16 mg g<sup>−1</sup> (with Si-APTS-CO) and 32.42 mg g<sup>−1</sup> (with Si-APTS) at 333 K and an adsorbent dosage of 1.5 g L<sup>−1</sup>. Functionalization changed the thermal behavior, with Si showing exothermic adsorption, while the functionalized silicas exhibited endothermic adsorption. The adsorbents demonstrated promising potential to remove Fe<sup>3+</sup> and Al<sup>3+</sup> from a real-world phosphogypsum leachate. In addition, they did not show affinity for the REE<sup>3+</sup> ions, meaning that there are no losses of these elements in the proposed pre-treatment step.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"7 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247183","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}
引用次数: 0
Heat integration in reactive distillation: How far have we come and what is still missing? 反应精馏中的热集成:我们已经走了多远,还缺少什么?
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-07 DOI: 10.1016/j.seppur.2025.135437
Irvy Ai Xia Teh, Hao-Yeh Lee, Zong Yang Kong, Jaka Sunarso
{"title":"Heat integration in reactive distillation: How far have we come and what is still missing?","authors":"Irvy Ai Xia Teh, Hao-Yeh Lee, Zong Yang Kong, Jaka Sunarso","doi":"10.1016/j.seppur.2025.135437","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135437","url":null,"abstract":"Although several review papers have been published on reactive distillation (RD), none have provided a focused analysis and consolidated the full range of heat-integration (HI) strategies aimed at enhancing the energy efficiency of RD process. Recognizing RD as a promising process intensification technique, this review explores the various HI strategies that facilitate energy recovery and reuse within RD process. These include: (i) design-based modifications, which achieve internal HI without additional equipment while also recognizing an overlooked design variable, e.g., catalyst holdup, (ii) heat-pump-assisted approaches such as internally heat-integrated distillation column (HIDiC), mechanical vapor recompression (MVR), and bottom flash (BF), (iii) multi-effect configurations, and (iv) hybrid approaches combining multiple HI. While these strategies are considered mature and have been reviewed individually, existing reviews rarely explore how they may be refined or combined to achieve greater energy savings for RD. To address this gap, this review discusses the practical considerations and challenges, alongside identifying research gaps and future prospects for implementing HI strategies in RD. Of particular interest is the emerging double-effect HI, which leverages upon multiple columns operating at different pressures to significantly reduce external utility demands. While this method has demonstrated notable energy savings, its application in RD remains scattered across individual studies and has yet to be systematically reviewed. Given its promising nature, a comprehensive review to critically evaluate the role of double-effect HI in RD is highly valuable. Overall, this review aims to inspire new HI directions in RD to support the advancement of next-generation sustainable chemical manufacturing.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"26 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241890","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}
引用次数: 0
Calcium modification in food waste digestate derived granular biochar: unveiling synergistic mechanisms for phosphorus recovery 食物垃圾消化衍生颗粒生物炭中的钙改性:揭示磷回收的协同机制
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-06 DOI: 10.1016/j.seppur.2025.135513
Yeqi Lin, Qindong Chen, L.I. Fong Yau Sam, Ke Huang, Qian Wang, Huanan Wu, Qiyong Xu
{"title":"Calcium modification in food waste digestate derived granular biochar: unveiling synergistic mechanisms for phosphorus recovery","authors":"Yeqi Lin, Qindong Chen, L.I. Fong Yau Sam, Ke Huang, Qian Wang, Huanan Wu, Qiyong Xu","doi":"10.1016/j.seppur.2025.135513","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135513","url":null,"abstract":"Phosphorus (P) is a primary concern in wastewater. It is crucial to develop efficient adsorbents for long-term P removal from wastewater. In this study, we proposed a calcium carbonate (CaCO<sub>3</sub>) enhanced granular biochar (BC) adsorbent by co-pyrolysis of food waste digestate, and systematically evaluated the adsorbent properties and adsorption mechanism. Material characterization has verified that in-situ Ca loading via 4–10 nm pore filling improves surface functional groups and enhances biochar yield. The adsorbent prepared with 10 % CaCO<sub>3</sub> achieved the best phosphorus removal capacity (18–20 mg-P/g-BC) versus unmodified counterparts (8–10 mg-P/g-BC). The adsorption followed Langmiur isotherm model and Pseudo-second-order kinetics. Calcium induced active sites enhanced the phosphate trapping with optimal phosphate removal occurring at pH 6–9. Modification with excessive CaCO<sub>3</sub> (20 %) induced structural fragility, and the Ca<img alt=\"single bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" style=\"vertical-align:middle\"/>P precipitate overformation hindered the further phosphate adsorption. Fixed-bed column adsorption revealed prolonged saturation thresholds (&gt;125 h), and the adsorption fitted well with the Clark mass-transfer model (R<sup>2</sup> = 0.992). Notably, equilibrium between complexation and precipitation mechanisms was achieved at the 10 % CaCO<sub>3</sub> modification. This study establishes a strategy for optimizing granular P adsorbent systems through controlled mineral modification, thereby providing theoretical and practical foundations for full-scale phosphorus recovery deployment.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"32 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229466","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}
引用次数: 0
Adsorptive removal of additive potent organic toxicants from beverages and contaminated waters: A critical review of adsorbent materials, kinetics, isotherms, thermodynamics, mechanisms, and future prospects 吸附去除饮料和污染水中的强效有机毒物:吸附剂材料、动力学、等温线、热力学、机理和未来展望的综述
IF 8.6 1区 工程技术
Separation and Purification Technology Pub Date : 2025-10-06 DOI: 10.1016/j.seppur.2025.135453
Oluseyi S. Salami, Masixole Sihlahla, Bongumusa S. Dladla, Nomvano Mketo
{"title":"Adsorptive removal of additive potent organic toxicants from beverages and contaminated waters: A critical review of adsorbent materials, kinetics, isotherms, thermodynamics, mechanisms, and future prospects","authors":"Oluseyi S. Salami, Masixole Sihlahla, Bongumusa S. Dladla, Nomvano Mketo","doi":"10.1016/j.seppur.2025.135453","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.135453","url":null,"abstract":"The global consumption of additive potent organic toxicants (POTs) in ergogenic beverages, particularly energy drinks (EDs), has raised significant health and environmental concerns due to their increasing production, excessive intake beyond recommended levels, and discharge into aquatic ecosystems. These additive POTs, which include sweeteners, caffeine, taurine, preservatives, flavorings, and synthetic colorants among others, are recognized as emerging organic contaminants (EOCs) and are frequently detected in various water bodies, thus posing risks to human health and ecological systems. Addressing these challenges requires the development of innovative and effective remediation strategies, with new adsorption materials and methods emerging as a promising approach owing to its cost-effectiveness, efficiency, environmental compatibility, and simplicity. Despite considerable research on the adsorptive removal of beverage additive POTs from aqueous media, critical reviews focusing specifically on the application of different adsorbent materials remain limited. Therefore, this article aims to critically analyze recent studies primarily from the past decade on the batch adsorption-based removal of additive POTs from beverages and contaminated waters using diverse adsorbents. The review provides a critical examines the application of various adsorbent materials for beverage additive POT removal, the kinetic, isotherm, and thermodynamic studies, as well as the adsorption mechanisms, such as physisorption and chemisorption. It also discusses key factors influencing adsorption, alongside an assessment of the toxicological implications for human health. Finally, the review highlights current challenges and future prospects in the additive POT remediation, emphasizing the need for sustainable, innovative adsorption technologies to ensure safer beverages and improved water quality, in alignment with the Sustainable Development Goals (SDGs) focused on responsible consumption, food security, health, and clean water.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"2 1","pages":"135453"},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247236","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}
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