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Current Perspectives and Future Prospects of Nano-Biotechnology in Wastewater Treatment 纳米生物技术在污水处理中的应用现状与展望
Separation & Purification Reviews Pub Date : 2019-06-25 DOI: 10.1080/15422119.2019.1630430
J. Sahu, R. Karri, H. Zabed, S. Shams, Xianghui Qi
{"title":"Current Perspectives and Future Prospects of Nano-Biotechnology in Wastewater Treatment","authors":"J. Sahu, R. Karri, H. Zabed, S. Shams, Xianghui Qi","doi":"10.1080/15422119.2019.1630430","DOIUrl":"https://doi.org/10.1080/15422119.2019.1630430","url":null,"abstract":"Industrialization and urbanization are contributing extensively to the production of wastewater, which mostly ends up untreated in water bodies, leading to water pollution. Treatment of wastewater could be a promising approach in mitigating the pollution. Nano-biotechnology (NBT), which is an emerging technology, has excellent potential in wastewater treatment. Nano-materials have the ability to remove pollutants and pathogens by working either as the stand-alone treatment agents or by being incorporated into biological membranes and integrated with the conventional treatment techniques. This review presents an overview of possible applications of NBT in wastewater treatment, highlighting the antimicrobial activities of various nanomaterials, and describing the production of algal membrane-based bioreactor and microbial fuel cells. Significant difficulties in NBT utilization in wastewater treatment are also discussed. Further research directions needed to provide a sustainable method of water purification are proposed.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76671087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 46
Application of Si-Based Solvents to the Purification of Metallurgical Grade-Silicon 硅基溶剂在冶金级硅提纯中的应用
Separation & Purification Reviews Pub Date : 2019-06-05 DOI: 10.1080/15422119.2019.1623253
Ya-qiong Li, Lifeng Zhang
{"title":"Application of Si-Based Solvents to the Purification of Metallurgical Grade-Silicon","authors":"Ya-qiong Li, Lifeng Zhang","doi":"10.1080/15422119.2019.1623253","DOIUrl":"https://doi.org/10.1080/15422119.2019.1623253","url":null,"abstract":"Applying Si-based alloy solvents to Si purification is considered an emerging technology for the production of solar-grade Si (SOG-Si). This study reviews the principle of solvent refining. Alloy systems such as Si–Al, Si–Sn, and Si–Fe are reviewed along with the Si separation method. The effects of solvent refining processing parameters, such as the solvent metal, cooling rate, heating method, and processing time, on boron and phosphorus segregation behaviors and Si purification efficiency are discussed. Experimental and theoretical investigations have shown that removal efficiencies greater than 90% can be achieved for B and P from metallurgical-grade Si using a Si–Al alloy. Meanwhile, separation methods, namely, flotation, filtration, acid leaching, and directional solidification, are used to separate the refined Si from the alloy. Finally, a method for the potential industrial production of SOG-Si is proposed.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77507194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
On the Performance of Free Radicals Combined Electrocoagulation Treatment Processes 自由基联合电凝处理工艺的性能研究
Separation & Purification Reviews Pub Date : 2019-04-03 DOI: 10.1080/15422119.2018.1459700
Z. Al-Qodah, M. Al-Shannag
{"title":"On the Performance of Free Radicals Combined Electrocoagulation Treatment Processes","authors":"Z. Al-Qodah, M. Al-Shannag","doi":"10.1080/15422119.2018.1459700","DOIUrl":"https://doi.org/10.1080/15422119.2018.1459700","url":null,"abstract":"The electrocoagulation (EC) combined treatment processes have shown promising performances in which the removal of pollutants from industrial wastewater was greatly enhanced. The integration of a free radical producing step with EC has been considered as one of these new combinations that show synergy and improvements in the overall cleaning process performance. This review is devoted to discuss and analyze references on free radicals-assisted EC processes. Different combinations of free radical mechanisms were cited in the literature during the last two decades. They included ozone, advanced oxidation and ultrasound energy-assisted EC. It was noted that most of those studies were lab-scale processes that used synthetic wastewaters rather than real wastewaters. In addition the performances of those combined processes were improved compared to the EC process alone. This review considers the main parameters of free radical EC processes such as mechanisms, kinetic models, scale-up and cost estimation. Many concluding remarks were stated to give insights for possible future investigations. It seems from the results that the ozone-assisted EC is the most efficient combination since its removal efficiency is high in most applications. On the other hand, the combination of ultrasonic energy with EC was reported to reduce electrode passivation.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82683152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 38
Processes developed for the separation of europium (Eu) from various resources 开发了从各种资源中分离铕的工艺
Separation & Purification Reviews Pub Date : 2019-04-03 DOI: 10.1080/15422119.2018.1454959
A. Kumari, M. Jha, D. Pathak, S. Chakravarty, Jae-chun Lee
{"title":"Processes developed for the separation of europium (Eu) from various resources","authors":"A. Kumari, M. Jha, D. Pathak, S. Chakravarty, Jae-chun Lee","doi":"10.1080/15422119.2018.1454959","DOIUrl":"https://doi.org/10.1080/15422119.2018.1454959","url":null,"abstract":"Europium (Eu), one of the most significant rare earth (RE) elements, has wide applications as functional material in phosphor production, majorly used in fluorescent lamps, computer monitors, televisions etc. Eu is one of the three divalent lanthanides (along with Yb and Sm) having a reduction potential higher than −2 V. This possibility of Eu reduction is attributed to a relatively stable half-filled 4f7 electronic configuration, thus providing a high stabilization energy and selective recovery. But the Eu recuperation from natural minerals is either accompanied with other REs or Eu is recovered as a group of light REs. Selective recovery of Eu has sparked the progress for its reutilization through recycling of secondary resources. The perspectives of reclaiming Eu as a value added product from various sources using different pyro-hydro or hybrid techniques are discussed. The systematic research and salient findings on methods, viz., reduction, leaching, solvent extraction, as well as combined methods scaled-up to commercial scale to recover Eu, are also reported with recommendations. Thus, this comparative as well as summarized review hopes to help researchers to develop feasible processes for Eu recovery.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80127967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Recent trends in replacement of disperser solvent in dispersive liquid-liquid microextraction methods 分散液-液微萃取法中分散溶剂替代的研究进展
Separation & Purification Reviews Pub Date : 2019-04-03 DOI: 10.1080/15422119.2018.1460851
H. Sereshti, Parisa Khorram, N. Nouri
{"title":"Recent trends in replacement of disperser solvent in dispersive liquid-liquid microextraction methods","authors":"H. Sereshti, Parisa Khorram, N. Nouri","doi":"10.1080/15422119.2018.1460851","DOIUrl":"https://doi.org/10.1080/15422119.2018.1460851","url":null,"abstract":"Since its innovation in 2006, the dispersive liquid-liquid microextraction (DLLME) method has attracted the attention of analytical chemists in the field of sample preparation. This method has been successfully applied to determine trace amounts of pollutants in various matrices, but the restriction in the choice of suitable disperser and extraction solvents, and high disperser solvent consumption leading to decreased partition coefficients of the analytes between aqueous phase and extractant are its problems. To solve these drawbacks and develop environmentally friendly techniques, various alternatives for the conventional DLLME have been presented. The current review will begin with an introduction to the sample preparation, implementation of DLLME, and its advantages. Then, we focus on its drawbacks, which result mainly from the use of disperser solvent. Afterward, some of the most interesting approaches that have been employed and published until now are reviewed. Finally, an outlook on the future of these techniques will be given.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80078429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 52
Removal of Radionuclides from Fukushima Daiichi Waste Effluents 从福岛第一核电站废水中去除放射性核素
Separation & Purification Reviews Pub Date : 2019-01-10 DOI: 10.1080/15422119.2018.1549567
J. Lehto, R. Koivula, H. Leinonen, E. Tusa, R. Harjula
{"title":"Removal of Radionuclides from Fukushima Daiichi Waste Effluents","authors":"J. Lehto, R. Koivula, H. Leinonen, E. Tusa, R. Harjula","doi":"10.1080/15422119.2018.1549567","DOIUrl":"https://doi.org/10.1080/15422119.2018.1549567","url":null,"abstract":"This paper describes the processes used at the Fukushima Daiichi plant, Japan, to purify the waste effluents generated in the cooling of damaged reactors. These include primary cesium removal with the Kurion zeolite system and the SARRY system utilizing silicotitanate to remove radiocesium from water recirculated to reactors for cooling. Another process is the ALPS system to purify the retentates of the reverse osmosis plant to further purify the water from radionuclides after primary cesium separation. In ALPS, a major role is played by the transition metal hexacyanoferrate product CsTreat and sodium titanate SrTreat in the removal of radiocesium and radiostrontium, respectively. The performance of these four exchangers (zeolite, silicotitanate, hexacyanoferrate, and sodium titanate) is critically analyzed with respect to processing capacities and the decontamination factors obtained in the processes. Furthermore, general information on preparation, structure and ion exchange of these ion-exchanger categories is given with additional information on their use in nuclear waste effluent treatment processes. Finally, the importance of selectivity and associated factors are discussed.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84685084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 68
Recent Developments and Applications of Three-Phase Partitioning for the Recovery of Proteins 蛋白质回收三相分划的最新进展及应用
Separation & Purification Reviews Pub Date : 2019-01-02 DOI: 10.1080/15422119.2018.1427596
K. Chew, T. Ling, P. Show
{"title":"Recent Developments and Applications of Three-Phase Partitioning for the Recovery of Proteins","authors":"K. Chew, T. Ling, P. Show","doi":"10.1080/15422119.2018.1427596","DOIUrl":"https://doi.org/10.1080/15422119.2018.1427596","url":null,"abstract":"Three-phase partitioning (TPP) is rapidly developing as a novel bioseparation technique for the separation and purification of biomolecules. TPP has been applied in a wide range of applications including enzyme stability and enhancement of its catalytic activity. The partitioning into three phases is mainly dependent on the concentration of alcohol and salt used. TPP provides high enzyme recovery and can be utilized along with external techniques such as ultrasound, microwave assisted, microaffinity ligand-facilitated and also ionic-liquid based. This technique has attracted interest in the large scale recovery of proteins from crude feedstocks or fermentation broths. In this review, the basic principles, refolding of proteins using TPP, key design variables of TPP, types of TPP, applications of TPP in food industry as well as the challenge of TPP were analyzed. The work presented in this review will be beneficial for further researches in TPP or related separation techniques.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80878866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 49
Nanoporous Materials as H2S Adsorbents for Biogas Purification: a Review 纳米多孔材料在沼气净化中作为H2S吸附剂的研究进展
Separation & Purification Reviews Pub Date : 2019-01-02 DOI: 10.1080/15422119.2018.1476978
A. Peluso, N. Gargiulo, P. Aprea, F. Pepe, D. Caputo
{"title":"Nanoporous Materials as H2S Adsorbents for Biogas Purification: a Review","authors":"A. Peluso, N. Gargiulo, P. Aprea, F. Pepe, D. Caputo","doi":"10.1080/15422119.2018.1476978","DOIUrl":"https://doi.org/10.1080/15422119.2018.1476978","url":null,"abstract":"Biogas is one of the most promising renewable sources of energy. However, it is also a gas mixture containing acidic gases, such as H2S, useless for energetic purposes, environmentally harmful and damaging for energy conversion devices. This review focuses on nanoporous materials as adsorbents of H2S for biogas purification processes. Cation-exchanged zeolites and impregnated activated carbons have been thoroughly studied since many years for this application, providing good results, in particular for what concerns activated carbons, despite having a limited regenerability. Amino-functionalized ordered mesoporous silicas produced very interesting results, both in terms of adsorption performances and regeneration capacity, but they are largely untested in large-scale “real-life” applications, and deserve further investigations, in particular for H2S and CO2 discrimination. On the contrary, despite reporting very good results, there are only few papers dealing with H2S adsorption on nanoporous metal organic frameworks.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85431753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 64
Synthesis and Applications of Functionalized Magnetic Nanomaterials in Enantioseparation 功能化磁性纳米材料的合成及其在对映体分离中的应用
Separation & Purification Reviews Pub Date : 2019-01-02 DOI: 10.1080/15422119.2017.1419257
Xiaojuan Deng, Wenbin Li, Guosheng Ding, T. Xue, Xiaoping Chen
{"title":"Synthesis and Applications of Functionalized Magnetic Nanomaterials in Enantioseparation","authors":"Xiaojuan Deng, Wenbin Li, Guosheng Ding, T. Xue, Xiaoping Chen","doi":"10.1080/15422119.2017.1419257","DOIUrl":"https://doi.org/10.1080/15422119.2017.1419257","url":null,"abstract":"Efficient enantioselective separation is a challenging task due to the identical physical and chemical properties of enantiomers. Functionalized magnetic nanomaterials modified with chiral ligands on their surface possess both magnetic property and chiral recognition ability, and have demonstrated great potential in chiral discrimination. This review summarizes the applications of magnetic nanomaterials modified with various chiral selectors (e.g., β-cyclodextrins, polymers, proteins, amino acids and cellulose) in enantioselective separation. After proper preparation and modification, these functionalized magnetic nanomaterials are effective for enantioseparation. Therefore, enantioseparations based on functionalized magnetic nanomaterials are convenient, economical and effective.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79388885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Optimizing Geometric Parameters in Hydrocyclones for Enhanced Separations: A Review and Perspective 优化水力旋流分离器的几何参数:综述与展望
Separation & Purification Reviews Pub Date : 2019-01-02 DOI: 10.1080/15422119.2017.1421558
Long Ni, Jinyi Tian, T. Song, Yongson Jong, Jianing Zhao
{"title":"Optimizing Geometric Parameters in Hydrocyclones for Enhanced Separations: A Review and Perspective","authors":"Long Ni, Jinyi Tian, T. Song, Yongson Jong, Jianing Zhao","doi":"10.1080/15422119.2017.1421558","DOIUrl":"https://doi.org/10.1080/15422119.2017.1421558","url":null,"abstract":"Hydrocyclones have been extensively applied for solid–liquid or liquid–liquid separations in various industries. However, the exact mechanisms underlying the enhanced separation technologies based on the optimization of geometric parameters of hydrocyclones remain unclear, and a number of research teams have performed numerous studies to enlarge the application scope of hydrocyclones by optimizing geometric parameters. This review provides a comprehensive state-of-the-art review of hydrocyclone enhanced-separation technologies. The enhanced-separation technologies are categorized into ten groups: cylindrical section, inlet, vortex finder, underflow pipe, conical section, hydrocyclone inclination angle, hydrocyclone insertion, conical-section/apex water injection, reflux device, and multi-hydrocyclone arrangement. These enhanced-separation technologies were analyzed and summarized according to the key separation-performance parameters of hydrocyclones, such as separation efficiency, cut size, split ratio, energy consumption, and capacity. It is expected that both the reviewed contents and the proposed challenges and future methodologies and technologies may provide research fellows working in this field with an improved understanding of enhanced separation technologies of hydrocyclones.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79730070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 77
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