Separation and Purification Technology最新文献

{"title":"Prioritized recovery of lithium from spent lithium-ion batteries by synergistic roasting with Na2SO4: Precise regulation","authors":"Shunlin Lei, Haoyuan Ding, Shuai Yuan, Guodong Wen, Chang Han, Zaizheng Dong, Wenzhe Wang","doi":"10.1016/j.seppur.2024.131128","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131128","url":null,"abstract":"Due to its dual attributes of environment and resources, the development of green and low-carbon and the recycling of valuable metals have become a research hotspot in the field of spent lithium-ion batteries recycling. For the black mass, the reductant of Na₂SO₄ was selected to achieve efficient and preferential extraction of lithium by regulating the formation of the reduction products, investigating the mechanism of the synergy between in-situ carbothermal reduction and Na₂SO₄ roasting. The results demonstrated that the leaching efficiency of lithium from Black Mass was 80.93% under the optimal conditions of 20 g Na₂SO₄ dosage, roasting temperature of 700 ℃, and roasting time of 150 min. Comprehensive characterization revealed that the addition of Na₂SO₄ facilitated the transformation of Li from Li₂CO₃ to LiNaSO₄, which has high solubility, and preventing the excessive reduction of Ni/Co oxides to the metallic states. The efficient separation and enrichment of lithium from spent LIBs was achieved by the accurate targeted transformation of the NCM during the synergistic roasting process, promising applications in the spent lithium-ion battery recycling industry.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"87 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849262","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":"Sustainable carbonaceous materials-based catalytic membranes for organic wastewater treatment: Progress and prospects","authors":"Yongtao Xue, Jia Wei Chew","doi":"10.1016/j.seppur.2024.131119","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131119","url":null,"abstract":"Catalytic membrane, as a cutting-edge hybrid technology, is promising for organic wastewater treatment not only because of the excellent removal efficiency for various organic pollutants, but also because of the mitigation of membrane fouling. However, some challenges persist, including the relatively high fabrication costs of membranes, the high possibility of metal ions leaching from membrane structures, and the poor renewability of synthetic materials, which significantly restrict more widespread application. To address these issues, carbonaceous materials (e.g., biochar, activated carbon, carbon nanotubes, graphene, graphene oxide) are renewable and environmentally friendly materials that inherently have large surface areas, high porosity, and tuneable surface functional groups that can be employed as excellent alternatives in catalytic membranes. In this review, various methods (e.g., blending, in-situ growth, interfacial polymerization, and layer-by-layer assembly) for the fabrication of carbonaceous materials-based membranes are comprehensively summarized and discussed. Subsequently, the integration of catalytic membranes in different processes, whether individually (e.g., photocatalytic process, advanced oxidization process, and electrocatalytic process) or hybridized (e.g., photoelectrochemical process, photo-assisted advanced oxidization process), is assessed. In addition, various carbonaceous materials-based catalytic membranes implemented for the remediation of wastewater are critically discussed. Furthermore, the existing challenges are described, and further research recommendations are proposed. This review is expected to be beneficial for advancing the development of carbonaceous materials-based catalytic membranes for practical decontamination of organic wastewater.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"23 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849261","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":"Interfacial adsorption facilitated arsenate immobilization in soil using biochar-supported nanoscale goethite","authors":"Jing Nie, Shiyu Cao, Yanbiao Shi, Jiangshan Li","doi":"10.1016/j.seppur.2024.131122","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131122","url":null,"abstract":"As(V)-contaminated soil is a serious global environmental issue and As(V) immobilization is still a challenge. This study synthesizes and applies a high-performance biochar-supported nanoscale goethite (nGBC) to immobilize As(V) in soil, elucidating the interfacial mechanisms through various characterization methods and density functional theory calculations. nGBC was successfully synthesized at 600 °C for 2 h using 0.6 mol/L Fe³⁺, achieving a maximum adsorption capacity of 110.28 mg/g As(V). When the As(V) concentration in soil of 50 mg/g, the leaching As(V) concentration decreases to 0.0004 mg/L after 28 d remediation, which is lower than Class I groundwater quality limit. During the remediation, As(V) replaces hydroxyl groups on goethite, and forms stable bidentate binuclear complexes with surface iron. Consequently, nGBC transformed organic, carbonate, and exchangeable fractions into a more stable residue fraction. This study offers an effective material for stabilizing As(V)-contaminated soils and introduces a novel strategy for investigating the interfacial remediation mechanisms of heavy metal-contaminated soils.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"10 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849258","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":"Colorimetric response and adsorption performance of functional granular polyacrylonitrile for Au(I) in thiosulfate solution","authors":"Shuliang Chen, Yuxin Yang, Xinrong Li, Qiongyao Jin, Xianzhi Hu, Futing Zi","doi":"10.1016/j.seppur.2024.131114","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131114","url":null,"abstract":"The thiosulfate gold extraction technology represents a typical non-cyanide method, which poses challenges in achieving high efficiency and cost-effective gold recovery. The present study involved the synthesis of a colorimetrically responsive granular polyacrylonitrile material (PANG_bPEI-CS₂) capable of effectively adsorbing Au(I) in thiosulfate solution. The results show that PANG_bPEI-CS₂ exhibits a colorimetric response to Au(I) in thiosulfate solution, with the observed visual color transitioning from pale yellow hue to orange. This phenomenon can be attributed to the conjugation plane extension on PANG_bPEI-CS₂ during Au(I) adsorption, resulting in a redshift of the absorption spectrum towards the visible region. The adsorption of gold in thiosulfate solution by PANG_bPEI-CS₂ follows the Langmuir isotherm and pseudo-second-order kinetic models, with the maximum loading capacity of 60.502 mg·g⁻¹. The gold adsorption mechanism by PANG_bPEI-CS₂ involves ligand exchange, wherein gold forms a ring complex with the proximity or adjacency of S atoms on PANG_bPEI-CS₂. And the adsorption process is influenced by both the pH of the solution and the concentration of thiosulfate. The loaded gold on PANG_bPEI-CS₂ can be effectively desorbed with acid thiourea solution. This finding are instrumental in addressing the challenges associated with the recovery and rapid detection of gold in thiosulfate solution.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"79 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849306","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":"Biogenic Cu-based hydroxyapatite nanocomposites for efficient clean of antibiotics: Performance and mechanism","authors":"Chaoqun Yan, Guoquan Zeng, Hongrui Zhu, Shulin Zhang, Anqi Yang, Zhiliang Cheng, Heng Xu, Huakang Liu","doi":"10.1016/j.seppur.2024.131123","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131123","url":null,"abstract":"Copper-based catalysts are capable of activating persulfate (PDS) and effectively degrading persistent antibiotic pollutants. In this study, we developed a novel biomineralization regulation strategy to synthesize copper-biomass-hydroxyapatite (Cu-BHAP) composite, aiming to create an environmentally friendly, non-toxic copper-based catalyst for antibiotic degradation as resource recycling. More specifically, biomineralization enhances the adsorption capacity of biomass-hydroxyapatite for copper by increasing its electron transfer rate, and the saturated adsorption capacity for Cu²⁺ reached 154.3 mg/g. The experimental results showed that the prepared Cu-BHAP sample exhibited superior catalytic activity in the PDS activation process, and 96.19 % removal efficiency of 40 mg/L tetracycline (TC) was achieved within 10 min without pH adjustment (initial pH = 5.8). Meanwhile, density functional theory (DFT) calculation confirmed that the Cu-BHAP catalyst enhanced the electron supply capacity and promoted the activation of PDS. According to scavenger and chemical probe experiments, abundant reactive oxygen species including sulfate radical (SO₄⁻•), hydroxyl radical (•OH), superoxide radical (O₂⁻•), and singlet oxygen (¹O₂) were responsible for the effective degradation of TC. The potential degradation intermediates of TC were investigated by LC-MS and proved to be less toxic than TC through the ecological structure–activity relationship procedure. Cu-BHAP exhibits a low ion leaching rate, robust performance, and excellent stability. This study provides a simple and green environmental remediation strategy for preparing effective copper-based PDS activators.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849266","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":"Molecular insights into transformation of dissolved organic matter in treating shale gas wastewater by the UV/H2O2-ultrafiltration-reverse osmosis combined process","authors":"Jingyu Shu, Peng Tang, Xuanyu Ji, Peng Liu, Guanyu Zhou, Zhiwei Gan, Jun Ma, Baicang Liu","doi":"10.1016/j.seppur.2024.131110","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131110","url":null,"abstract":"The integration of oxidation and membrane technologies demonstrates significant potential in shale gas wastewater (SGW) treatment. However, the molecular-level transformation mechanisms of the complex dissolved organic matter (DOM) in SGW during this coupled process remain unclear. This study systematically assessed the performance of UV/H₂O₂-ultrafiltration (UF)-reverse osmosis (RO) combined process in removing contaminations from SGW and used Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) to elucidate the transformation characteristics and mechanisms of DOM during treatment. At an optimal H₂O₂ dosage (100 mg/L), UV/H₂O₂ oxidation removed 16.76 % of UV₂₅₄ and 12.96 % of fluorescent dissolved organic matter, while achieving only 4.50 % removal of dissolved organic carbon, indicating that structural transformations of DOM were predominant over mineralization. FT-ICR MS analysis showed that UV/H₂O₂ significantly increased DOM saturation and oxidation, effectively degrading highly aromatic compounds such as polyphenols and polycyclic aromatic hydrocarbons, with a preferential removal of reduced organic compounds. Mass difference analysis, based on 19 transformation reactions, identified dealkylation, oxygenation, dehydrogenation, dehydration, and decarboxylation as common reactions during UV/H₂O₂ treatment, with demethylation being the most dominant and CHNOS compounds exhibiting the highest reactivity. UF treatment had minimal impact on DOM molecular structure, whereas RO effectively rejected most DOM. Due to steric hindrance and electrostatic repulsion, RO preferentially removed organic compounds with high <em>m</em>/<em>z</em>, high O/C, and high unsaturation. Additionally, linear alkyl benzene sulfonates showed a relatively high abundance in RO effluent due to its high ionization efficiency, while non-mineralized DOM was concentrated in the RO concentrate. This study provides crucial insights into the optimization of oxidation-membrane combined processes for SGW treatment at the molecular level.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"55 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841465","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":"Unraveling the interaction of algogenic organic matter and cells on membrane fouling mechanism during treatment of Microcystis aeruginosa-laden water","authors":"Zimin Wang, Shi Zhang, lili Li, Xiaomiao Zang, Rabail Zulekha, Haiyang Zhang, Xuezhi Zhang","doi":"10.1016/j.seppur.2024.131108","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131108","url":null,"abstract":"Membrane technology is widely used for algal bloom treatment due to its effective separation capabilities. However, the effect of algal cell interaction with AOM on the membrane fouling mechanism remains unclear. This study systematically investigated the filtration characteristics of algal cells and AOM, individually and in combination. The mechanism of membrane fouling was explored through the distribution of organic components, algal cake structure, interfacial free energy, and changes in the functional groups in cross-fouling. The mitigation effects of pretreatment additives, including diatomite, powdered activated carbon (PAC), and plant cotton, on interaction fouling were evaluated. The results revealed that the interaction between algal cells and AOM had a synergistic effect, significantly increasing membrane resistance. The presence of algal cells facilitated the transformation of some irreversible fouling into reversible fouling. Compared with cells, AOM exhibited higher adhesion-free energy with the membrane, with higher AOM concentrations notably elevating both <em>Ri</em> and <em>Rir</em>. Confocal laser scanning microscopy (CLSM), scanning electron microscope, and atomic force microscope (AFM) observations revealed that protein volume fractions increased with cake layer thickness during cross-fouling, while polysaccharides preferentially deposited on the membrane surface. Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses further indicated that polysaccharides are critical in membrane fouling, while proteins were more likely to cause reversible fouling within the cake layer. Notably, diatomite significantly reduced the interaction fouling coefficient by optimizing the cake layer structure. These findings provide valuable insights for controlling membrane fouling based on the characteristics of cells and AOM.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"31 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849264","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":"Construction of a platform to develop 3D ionic porous organic polymers via a post-modification strategy for efficient adsorption of charged organic pollutants","authors":"Hong-Liang Wang, Fu-Gui Xi, Xing-Yu Xu, Yu-Qing Yan, Jing-Yu Sun, Xiaobo Luo, Peiyang Gu, Shiyuan Zhou","doi":"10.1016/j.seppur.2024.131124","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131124","url":null,"abstract":"The development of ionic porous organic polymer (POPs) for the efficient removal of charged organic pollutants is of paramount significance. Herein, in this work, a 2D conjugated POP based on tetraphenyl ethylene moiety was firstly synthesized, and then it was further cross-linked to prepare a building block via the Friedel-Crafts alkylation reaction and “knitting” method. Two functional groups with opposite charges including the cationic quaternary ammonium group and anionic sulfonate group have been subsequently introduced to synthesize 3D ionic POPs named TCN-7 and TCN-8 under mild conditions to improve the hydrophilicity and enhance the adsorption affinity (primarily electrostatic interaction). Although the surface areas have decreased after post-modification, they still exhibited improved adsorption performance toward diverse charged organic dyes and herbicides. Especially for an anionic dye congo red (CR) and a cationic dye methylene blue (MB), TCN-7 and TCN-8 showed a removal efficiency &gt; 99.5 % within a contact time of merely 1 min, respectively. Moreover, TCN-7 displayed an adsorption capacity of 2246 and 386 mg/g for CR and an anionic herbicide 2,4-dichlorophenoxyacetic acid, and TCN-8 reaches 1984 and 327 mg/g for MB and a cationic herbicide paraquat, which has surpassed the as-prepared 2D POPs and most of the recently reported adsorbents. More importantly, they exhibited excellent stability after five cycles and superfast removal ability in the column adsorption experiments, demonstrating potential application in real wastewater treatment scenarios. Our work may provide a platform to develop 3D ionic POPs via a post-modification strategy in one step under mild conditions, which is promising in the efficient removal of charged organic pollutants.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"7 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857637","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":"Construction of photocatalytic-persulfate synergistic system for efficient removal of environmental pollutants","authors":"Jiaqi Li, Tao Sun, Yuhang Deng, Hao Liu, Renquan Guan, Chun Li, Fanming Zeng, Tiantian Sun, Chunbo Liu","doi":"10.1016/j.seppur.2024.131033","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131033","url":null,"abstract":"The persulfate-based advanced oxidation processes (PS-AOPs) can potentially enable the cost-effective and efficient removal of environmental pollutants. However, to advance this technology, an efficient photocatalytic composite persulfate system that removes recalcitrant organic pollutants from water is required and the regulatory mechanisms of free radical reactions during the removal process must be thoroughly understood. In this study, Co₃O₄ derived from metal–organic frameworks (MOFs) are loaded onto potassium ion (K⁺)-etched graphite-phase carbon nitride, forming an efficient PS-AOPs system that removes approximately 99 % of sulfamethoxazole (SMX) within 30 min. The incorporated K⁺ ions and efficient charge-transfer channels synergistically extend the lifetime of the photo-generated charge carriers, effectively enhancing the activation of peroxymonosulfate (PMS) and consequently improving the photocatalytic removal efficiency of SMX. Besides establishing a viable pathway for the removal of recalcitrant pollutants in water, this study deepens our understanding of the mechanism underlying PMS activation by metal–carbon-based catalysts.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"20 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857646","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":"CO2 Capture Using Resin-Based Solid Amines: Characteristic, Application, Regeneration and Deactivation Mechanism","authors":"Endian Hu, Li Lin, Kailun Chen, Jinglin Li, Yuchen Gao, Jingwen Chang, Weikai Qin, Yukun Zhao, Jianguo Jiang","doi":"10.1016/j.seppur.2024.131125","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131125","url":null,"abstract":"The accumulation of CO₂ has been considered to be one of the main contributors to global warming and climate change, making carbon emission reduction and carbon capture technologies key research focuses. Out of the various technologies to lower atmospheric CO₂ levels, using solid amine adsorbents for CO₂ capture is seen as one of the most promising options. Porous resin materials are gradually being investigated as porous solid supports for amine functionalization due to their high specific surface area and high adsorption properties. In this review, we focus on the application of resin-based solid amines in carbon capture, offer a detailed overview of the synthesis methods for resin-based solid amines, and discuss how different supports and organic amines impact the performance of these adsorbent materials. We explore factors affecting the stability of these materials, including deactivation caused by heat, moisture, oxidation, CO₂, and impurity gases, to identify the causes and mechanisms of deactivation, and providing the thorough summary of how resin-based solid amines perform in CO₂ adsorption under various environmental conditions. Our review addresses a gap of resin supports in the current literature on solid amine adsorbents.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"31 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867523","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}