Pub Date : 2022-02-20DOI: 10.1080/15422119.2022.2037000
F. H. Memon, Faisal Rehman, Jaewook Lee, F. Soomro, M. Iqbal, Shahbaz Khan, Akbar Ali, K. Thebo, Kyung Hyun Choi
ABSTRACT Two-dimensional membranes are considered as the most energy-efficient alternatives to various traditional separation processes. To date, atomically thin hexagonal boron nitride, covalent organic frameworks, graphene, graphene oxide, transition metal carbides and nitrides, layered double hydroxide, transition metal dichalcogenides (TMDCs), and metal-organic frameworks have been extensively investigated for high-performance lamellar membranes, which is due to their tunable physicochemical properties, single-layered structure, and in-plane pore structure. This comprehensive review summarizes the different fabrication methods of TMDC-based membranes and introduces the recent modification strategies to improve their microstructural properties. TMDCs-based membranes for wastewater treatment, desalination, proton exchange, gas separation, and energy devices are extensively discussed. Finally, we highlight the current engineering hurdles and suggest research directions for improving the separation efficiency, stability, and permeability of these membranes. GRAPHICAL ABSTRACT
{"title":"Transition Metal Dichalcogenide-based Membranes for Water Desalination, Gas Separation, and Energy Storage","authors":"F. H. Memon, Faisal Rehman, Jaewook Lee, F. Soomro, M. Iqbal, Shahbaz Khan, Akbar Ali, K. Thebo, Kyung Hyun Choi","doi":"10.1080/15422119.2022.2037000","DOIUrl":"https://doi.org/10.1080/15422119.2022.2037000","url":null,"abstract":"ABSTRACT Two-dimensional membranes are considered as the most energy-efficient alternatives to various traditional separation processes. To date, atomically thin hexagonal boron nitride, covalent organic frameworks, graphene, graphene oxide, transition metal carbides and nitrides, layered double hydroxide, transition metal dichalcogenides (TMDCs), and metal-organic frameworks have been extensively investigated for high-performance lamellar membranes, which is due to their tunable physicochemical properties, single-layered structure, and in-plane pore structure. This comprehensive review summarizes the different fabrication methods of TMDC-based membranes and introduces the recent modification strategies to improve their microstructural properties. TMDCs-based membranes for wastewater treatment, desalination, proton exchange, gas separation, and energy devices are extensively discussed. Finally, we highlight the current engineering hurdles and suggest research directions for improving the separation efficiency, stability, and permeability of these membranes. GRAPHICAL ABSTRACT","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87029379","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}
Pub Date : 2022-01-31DOI: 10.1080/15422119.2022.2027444
Ahmed Mediani, Nurkhalida Kamal, S. Lee, F. Abas, M. Farag
ABSTRACT Coffee is recognized worldwide as a top beverage owing to its several associated health benefits mediated by a complex mixture of unique bioactive substances. Chlorogenic acids are the key components of the phenolic fraction in green coffee seeds, accounting for up to 14% of the dry matter. The manufacturing of decaffeinated coffee demands efficient caffeine extraction from seeds and spent without solvent history effect for safety considerations. This has prompted researchers to investigate eco-friendly and cost-effective extraction technologies. Current extraction processes are not environmentally sustainable and have harmful consequences on humans. To date, developing a single standard method for effective extraction of certain complex compounds from coffee seeds remained a challenging procedure. The current review aims to give updated technical information regarding coffee plant green extraction methods, their advantages and disadvantages, and factors affecting efficacies for the recovery of bioactive compounds in coffee seeds and coffee spent. A comparative review of the uses of innovative green extraction techniques for coffee bioactive substances is introduced to present alternatives to conventional extraction methods. The most interesting finding was that the maximum total extractions of catechin (50.6 g/100 g) and caffeine (46.2 g/100 g) were achieved with enzymes in pressurized liquid extraction (PLE), and PLE-assisted with enzymes exhibited an enhancement in total phenolics and overall antioxidant compared to 50% hydro-ethanolic solutions. In addition, it has been claimed that the ultrasonic extraction can cut extraction time by 37% and temperature by 13%. These green extraction techniques represent favorable approaches to the exploitation of coffee chemicals as bioactives to explore their wide-reaching applications at an industrial level and for their valorization.
{"title":"Green Extraction Methods for Isolation of Bioactive Substances from Coffee Seed and Spent","authors":"Ahmed Mediani, Nurkhalida Kamal, S. Lee, F. Abas, M. Farag","doi":"10.1080/15422119.2022.2027444","DOIUrl":"https://doi.org/10.1080/15422119.2022.2027444","url":null,"abstract":"ABSTRACT Coffee is recognized worldwide as a top beverage owing to its several associated health benefits mediated by a complex mixture of unique bioactive substances. Chlorogenic acids are the key components of the phenolic fraction in green coffee seeds, accounting for up to 14% of the dry matter. The manufacturing of decaffeinated coffee demands efficient caffeine extraction from seeds and spent without solvent history effect for safety considerations. This has prompted researchers to investigate eco-friendly and cost-effective extraction technologies. Current extraction processes are not environmentally sustainable and have harmful consequences on humans. To date, developing a single standard method for effective extraction of certain complex compounds from coffee seeds remained a challenging procedure. The current review aims to give updated technical information regarding coffee plant green extraction methods, their advantages and disadvantages, and factors affecting efficacies for the recovery of bioactive compounds in coffee seeds and coffee spent. A comparative review of the uses of innovative green extraction techniques for coffee bioactive substances is introduced to present alternatives to conventional extraction methods. The most interesting finding was that the maximum total extractions of catechin (50.6 g/100 g) and caffeine (46.2 g/100 g) were achieved with enzymes in pressurized liquid extraction (PLE), and PLE-assisted with enzymes exhibited an enhancement in total phenolics and overall antioxidant compared to 50% hydro-ethanolic solutions. In addition, it has been claimed that the ultrasonic extraction can cut extraction time by 37% and temperature by 13%. These green extraction techniques represent favorable approaches to the exploitation of coffee chemicals as bioactives to explore their wide-reaching applications at an industrial level and for their valorization.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84240515","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}
Pub Date : 2022-01-24DOI: 10.1080/15422119.2021.2008434
W. Ang, W. Lau, Y. Tan, E. Mahmoudi, A. Mohammad
ABSTRACT Membrane technology has evolved to be one of the main filtration processes in various water/wastewater treatment applications. The success of the treatment process lies on the improved properties of membranes, notably water permeation, solute rejection, and antifouling capabilities. Over the past decade, hyperbranched macromolecules that comprise star polymers and dendrimers have gained increasing attention in membrane research as synthesis materials and modifying agents. These macromolecules which are composed of branched structure, high-density terminal functional groups, and large intramolecular free volume could offer an opportunity to design a new generation membrane with desirable characteristics. This review looks into the recent advances in the polymeric membrane synthesis and its modification using branched macromolecules. Highlights are given to the factors contributing to the changes in membrane properties (structural, morphological, and chemical functional groups) and performance after branched macromolecules are used as main membrane forming material or modifying agent. The review also discusses outlook and future works that can be further explored on utilizing branched macromolecules in membrane application. Challenges in promoting and commercializing branched macromolecules-based membranes are also discussed. This review can serve as a valuable reference for further development of membranes with improved performance and functionalities for water treatment application.
{"title":"An Overview on Development of Membranes Incorporating Branched Macromolecules for Water Treatment","authors":"W. Ang, W. Lau, Y. Tan, E. Mahmoudi, A. Mohammad","doi":"10.1080/15422119.2021.2008434","DOIUrl":"https://doi.org/10.1080/15422119.2021.2008434","url":null,"abstract":"ABSTRACT Membrane technology has evolved to be one of the main filtration processes in various water/wastewater treatment applications. The success of the treatment process lies on the improved properties of membranes, notably water permeation, solute rejection, and antifouling capabilities. Over the past decade, hyperbranched macromolecules that comprise star polymers and dendrimers have gained increasing attention in membrane research as synthesis materials and modifying agents. These macromolecules which are composed of branched structure, high-density terminal functional groups, and large intramolecular free volume could offer an opportunity to design a new generation membrane with desirable characteristics. This review looks into the recent advances in the polymeric membrane synthesis and its modification using branched macromolecules. Highlights are given to the factors contributing to the changes in membrane properties (structural, morphological, and chemical functional groups) and performance after branched macromolecules are used as main membrane forming material or modifying agent. The review also discusses outlook and future works that can be further explored on utilizing branched macromolecules in membrane application. Challenges in promoting and commercializing branched macromolecules-based membranes are also discussed. This review can serve as a valuable reference for further development of membranes with improved performance and functionalities for water treatment application.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91113107","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}
Pub Date : 2021-12-21DOI: 10.1080/15422119.2021.2001755
L. Lai, N. Jusoh, W. Tay, Y. Yeong, P. Kiew
ABSTRACT Sequestration of CO2 is crucial to prevent further worsening of the environmental impact caused by global warming. Monoliths and membranes made from polymeric and inorganic materials have been used for CO2 removal to address environmental issues. Rapid prototyping technology offers a great potential for the fabrication of monoliths and membranes with high flexibility in terms of geometry and structure. This paper reviews the potential of the monolith and membrane fabricated through rapid prototyping for CO2 removal. The printing mechanism, chemical composition used in the fabrication of monoliths and membranes, as well as their CO2 removal capability are reviewed. The potential of monoliths and membranes is expected to be maximized for CO2 removal with the high flexibility in tailoring the geometry, surface area and associated with the fast growth of rapid prototyping technology.
{"title":"Rapid Prototyping for the Formulation of Monolith and Membrane for CO2 Removal","authors":"L. Lai, N. Jusoh, W. Tay, Y. Yeong, P. Kiew","doi":"10.1080/15422119.2021.2001755","DOIUrl":"https://doi.org/10.1080/15422119.2021.2001755","url":null,"abstract":"ABSTRACT Sequestration of CO2 is crucial to prevent further worsening of the environmental impact caused by global warming. Monoliths and membranes made from polymeric and inorganic materials have been used for CO2 removal to address environmental issues. Rapid prototyping technology offers a great potential for the fabrication of monoliths and membranes with high flexibility in terms of geometry and structure. This paper reviews the potential of the monolith and membrane fabricated through rapid prototyping for CO2 removal. The printing mechanism, chemical composition used in the fabrication of monoliths and membranes, as well as their CO2 removal capability are reviewed. The potential of monoliths and membranes is expected to be maximized for CO2 removal with the high flexibility in tailoring the geometry, surface area and associated with the fast growth of rapid prototyping technology.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84241574","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}
Pub Date : 2021-12-09DOI: 10.1080/15422119.2021.2004550
Valentin Reungoat, F. Allais, H. Ducatel, I. Ioannou
ABSTRACT By-products obtained through the industrial processing of rapeseed and mustard seeds are exploited as feed or methanization. However they contain high added value phenolic compounds, such as sinapic acid and its derivatives, that could be recovered by extraction and purification processes. This review presents the state of the art on such recovery processes. It covers conventional extraction by solvent and emergent extraction processes, namely solvent extraction assisted by ultrasound, microwaves, pressure, electro-technologies or enzymes. Concerning the purification processes, liquid-liquid extraction, adsorption and membrane filtration processes are commonly implemented. This article summarizes the most promising methods and technologies for developing sustainable processes for the recovery of sinapic acid derivatives from rapeseed and mustard seed by-products.
{"title":"Extraction and Purification Processes of Sinapic Acid Derivatives from Rapeseed and Mustard Seed By-Products","authors":"Valentin Reungoat, F. Allais, H. Ducatel, I. Ioannou","doi":"10.1080/15422119.2021.2004550","DOIUrl":"https://doi.org/10.1080/15422119.2021.2004550","url":null,"abstract":"ABSTRACT By-products obtained through the industrial processing of rapeseed and mustard seeds are exploited as feed or methanization. However they contain high added value phenolic compounds, such as sinapic acid and its derivatives, that could be recovered by extraction and purification processes. This review presents the state of the art on such recovery processes. It covers conventional extraction by solvent and emergent extraction processes, namely solvent extraction assisted by ultrasound, microwaves, pressure, electro-technologies or enzymes. Concerning the purification processes, liquid-liquid extraction, adsorption and membrane filtration processes are commonly implemented. This article summarizes the most promising methods and technologies for developing sustainable processes for the recovery of sinapic acid derivatives from rapeseed and mustard seed by-products.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85293378","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}
Pub Date : 2021-11-23DOI: 10.1080/15422119.2021.1986409
Qian He, Jijun Wu, Fan Yang, Yeqiang Zhou, Kai Liu, Wenhui Ma
ABSTRACT The thermodynamic properties of impurities in silicon-based solutions are the theoretical basis of silicon purification technology. These properties represent valuable information in regards to impurity removal for solar-grade silicon production by metallurgical methods. The thermodynamic properties of impurity components in silicon solutions obtained by both model calculations and experimental measurements are reviewed in detail in this paper with special focus on the infinite dilute activity coefficient and activity interaction coefficient of impurity components in binary Si-i and ternary Si-i-j systems. A positive or negative activity interaction coefficient value can be used to predict a mutually reinforcing or mutually restrictive relationship among impurity components during silicon purification. This review may provide workable guidance to researchers in selecting suitable refining systems and optimized refining conditions for silicon purification according to the thermodynamic properties of the impurity components therein; further, they may be used to establish a silicon solution thermodynamics database to support silicon purification technology.
{"title":"Thermodynamic Properties of Impurity Components in Silicon-based Solutions: Influence of Interactions among Components on Impurity Removal from Silicon","authors":"Qian He, Jijun Wu, Fan Yang, Yeqiang Zhou, Kai Liu, Wenhui Ma","doi":"10.1080/15422119.2021.1986409","DOIUrl":"https://doi.org/10.1080/15422119.2021.1986409","url":null,"abstract":"ABSTRACT The thermodynamic properties of impurities in silicon-based solutions are the theoretical basis of silicon purification technology. These properties represent valuable information in regards to impurity removal for solar-grade silicon production by metallurgical methods. The thermodynamic properties of impurity components in silicon solutions obtained by both model calculations and experimental measurements are reviewed in detail in this paper with special focus on the infinite dilute activity coefficient and activity interaction coefficient of impurity components in binary Si-i and ternary Si-i-j systems. A positive or negative activity interaction coefficient value can be used to predict a mutually reinforcing or mutually restrictive relationship among impurity components during silicon purification. This review may provide workable guidance to researchers in selecting suitable refining systems and optimized refining conditions for silicon purification according to the thermodynamic properties of the impurity components therein; further, they may be used to establish a silicon solution thermodynamics database to support silicon purification technology.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78789744","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}
Pub Date : 2021-11-02DOI: 10.1080/15422119.2021.1993255
V. Rychkov, E. Kirillov, S. Kirillov, G. Bunkov, M. Botalov, V. Semenishchev, Denis Smyshlyaev, A. Malyshev, A. Taukin, A. Akcil
ABSTRACT The choice of an appropriate method for rare earth element (REE) preconcentration from industrial by-products is a very difficult task. Most of the REE separation reviews focus on liquid extraction methods, whereas sorption processes are usually mentioned in connection with chromatographic individual REE separation. Limited information is currently available on ion exchange methods for REE preconcentration. The REE sorption methods are gradually acquiring great practical significance due to depleting REE sources. The present review deals with the history, recent studies and commercial applications of REE sorption from various complex industrial by-products such as products of apatite treatment, phosphogypsum and uranium ores. It covers an extensive study on the recent research related to use of polymeric ion-exchange sorption materials for REE preconcentration and recovery from various industrial wastes.
{"title":"Rare Earth Element Preconcentration from Various Primary and Secondary Sources by Polymeric Ion Exchange Resins","authors":"V. Rychkov, E. Kirillov, S. Kirillov, G. Bunkov, M. Botalov, V. Semenishchev, Denis Smyshlyaev, A. Malyshev, A. Taukin, A. Akcil","doi":"10.1080/15422119.2021.1993255","DOIUrl":"https://doi.org/10.1080/15422119.2021.1993255","url":null,"abstract":"ABSTRACT The choice of an appropriate method for rare earth element (REE) preconcentration from industrial by-products is a very difficult task. Most of the REE separation reviews focus on liquid extraction methods, whereas sorption processes are usually mentioned in connection with chromatographic individual REE separation. Limited information is currently available on ion exchange methods for REE preconcentration. The REE sorption methods are gradually acquiring great practical significance due to depleting REE sources. The present review deals with the history, recent studies and commercial applications of REE sorption from various complex industrial by-products such as products of apatite treatment, phosphogypsum and uranium ores. It covers an extensive study on the recent research related to use of polymeric ion-exchange sorption materials for REE preconcentration and recovery from various industrial wastes.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78610914","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}
Pub Date : 2021-10-29DOI: 10.1080/15422119.2021.1995875
Hongbo Liu, Bo Li, Li-wei Guo, Lin-mei Pan, Hua-xu Zhu, Zhi‐shu Tang, Wei-Hong Xing, Yuan-yuan Cai, J. Duan, Mei Wang, Sining Xu, Xingbao Tao
ABSTRACT Traditional Chinese medicine (TCM) is an important part of Chinese culture and the Chinese pharmaceutical industry. The adoption of stricter requirements for the quality of medicines has resulted in the loss of conformity of some traditional techniques used to prepare TCMs modern pharmaceutical methods. The TCM industry has begun to seek out novel methods to improve product quality and increase economic efficiency. Membrane technology is efficient, energy saving, and environmentally friendly. It is widely used in food processing, desalination, wastewater treatment, and in the medical industry. Membrane technology has also been adopted by the TCM industry as an alternative to traditional technology and has achieved good results. At present, membrane technology has been used in the separation, purification and concentration of TCMs. This review describes the use of microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and membrane distillation, in TCM processing that have been reported. Membrane fouling is the most important obstacle in the use of membrane-based processes by the TCM industry. The causes and control of membrane fouling associated with TCM extracts are also analyzed.
{"title":"Current and Future Use of Membrane Technology in the Traditional Chinese Medicine Industry","authors":"Hongbo Liu, Bo Li, Li-wei Guo, Lin-mei Pan, Hua-xu Zhu, Zhi‐shu Tang, Wei-Hong Xing, Yuan-yuan Cai, J. Duan, Mei Wang, Sining Xu, Xingbao Tao","doi":"10.1080/15422119.2021.1995875","DOIUrl":"https://doi.org/10.1080/15422119.2021.1995875","url":null,"abstract":"ABSTRACT Traditional Chinese medicine (TCM) is an important part of Chinese culture and the Chinese pharmaceutical industry. The adoption of stricter requirements for the quality of medicines has resulted in the loss of conformity of some traditional techniques used to prepare TCMs modern pharmaceutical methods. The TCM industry has begun to seek out novel methods to improve product quality and increase economic efficiency. Membrane technology is efficient, energy saving, and environmentally friendly. It is widely used in food processing, desalination, wastewater treatment, and in the medical industry. Membrane technology has also been adopted by the TCM industry as an alternative to traditional technology and has achieved good results. At present, membrane technology has been used in the separation, purification and concentration of TCMs. This review describes the use of microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and membrane distillation, in TCM processing that have been reported. Membrane fouling is the most important obstacle in the use of membrane-based processes by the TCM industry. The causes and control of membrane fouling associated with TCM extracts are also analyzed.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73797746","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}
ABSTRACT Polycyclic aromatic hydrocarbons (PAHs), as a group of carcinogenic and mutagenic substances, have raised intense concern among the global community due to their ubiquitous occurrence. It has been reported that food is also a key source of human exposure to PAHs because they can enter the food chain in different ways. Therefore, it is necessary to develop accurate analysis methods for such compounds in food samples to ensure food safety and human health. This paper aims to review the state-of-the-art purification techniques and determination methodologies for PAHs in comprehensive food samples. Different extraction methodologies and analytical approaches are updated, elaborated upon and discussed, particularly innovative, rapid, efficient and ecofriendly ones. In addition, this review discusses the latest results about the sources and interventions of PAHs contamination in food products.
{"title":"Source, Sample Preparation, Analytical and Inhibition Methods of Polycyclic Aromatic Hydrocarbons in Food (Update since 2015)","authors":"Xiao-ting Yan, Yuan Zhang, Yu Zhou, Guo-hui Li, Xue-song Feng","doi":"10.1080/15422119.2021.1977321","DOIUrl":"https://doi.org/10.1080/15422119.2021.1977321","url":null,"abstract":"ABSTRACT Polycyclic aromatic hydrocarbons (PAHs), as a group of carcinogenic and mutagenic substances, have raised intense concern among the global community due to their ubiquitous occurrence. It has been reported that food is also a key source of human exposure to PAHs because they can enter the food chain in different ways. Therefore, it is necessary to develop accurate analysis methods for such compounds in food samples to ensure food safety and human health. This paper aims to review the state-of-the-art purification techniques and determination methodologies for PAHs in comprehensive food samples. Different extraction methodologies and analytical approaches are updated, elaborated upon and discussed, particularly innovative, rapid, efficient and ecofriendly ones. In addition, this review discusses the latest results about the sources and interventions of PAHs contamination in food products.","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75073195","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}
Pub Date : 2021-08-27DOI: 10.1080/15422119.2021.1881794
A. Makarova, E. Nikulina, P. Fedotov
ABSTRACT Extraction of hazardous compounds by plants (phytoextraction) is considered a green technology for the remediation of soils and water bodies. Phytoextraction of mercury is very challenging due to the specific chemical/biochemical properties of this element and its low plant uptake. In this review, mechanisms and processes of enhancing phytoextraction of mercury are summarized. Plants that look promising for induced phytoextraction of mercury are described. Additives of various types that may significantly increase the efficiency of mercury phytoextraction are critically evaluated. Thiosulfates and other sulfur-containing compounds, aminopolycarboxylic acids, low-molecular-weight organic acids and enzymes are considered in detail. The important role of selective chemical inductors, primarily thiosulfates, is demonstrated. It is shown that synthetic aminopolycarboxylic acids have the potential for increasing bioavailability of mercury in soils and its translocation to above-ground organs of plants-phytoextractors. Non-chemical methods of inducing mercury phytoextraction are also addressed. Abbreviations: APCA: aminopolycarboxylic acid, BAF: bioaccumulation factor, BDL: below detection limit Cys: cysteine, DTPA: diethylenetriaminepentaacetic acid, DW: dry weight, EDDHA: ethylenediamine-N,N′-bis(2-hydroxyphenylacetic) acid, HEDTA: hydroxyethylethylenediaminetriacetic acid, IPEN: International Pollutants Elimination Network (https://ipen.org/), LMWOA: low-molecular-weight organic acid, MPC: below maximum permission concentration, ND: not detectable, NTA: nitrilotriacetic acid, PGPR: plant growth-promoting rhizobacteria, TF: translocation factor
{"title":"Induced Phytoextraction of Mercury","authors":"A. Makarova, E. Nikulina, P. Fedotov","doi":"10.1080/15422119.2021.1881794","DOIUrl":"https://doi.org/10.1080/15422119.2021.1881794","url":null,"abstract":"ABSTRACT Extraction of hazardous compounds by plants (phytoextraction) is considered a green technology for the remediation of soils and water bodies. Phytoextraction of mercury is very challenging due to the specific chemical/biochemical properties of this element and its low plant uptake. In this review, mechanisms and processes of enhancing phytoextraction of mercury are summarized. Plants that look promising for induced phytoextraction of mercury are described. Additives of various types that may significantly increase the efficiency of mercury phytoextraction are critically evaluated. Thiosulfates and other sulfur-containing compounds, aminopolycarboxylic acids, low-molecular-weight organic acids and enzymes are considered in detail. The important role of selective chemical inductors, primarily thiosulfates, is demonstrated. It is shown that synthetic aminopolycarboxylic acids have the potential for increasing bioavailability of mercury in soils and its translocation to above-ground organs of plants-phytoextractors. Non-chemical methods of inducing mercury phytoextraction are also addressed. Abbreviations: APCA: aminopolycarboxylic acid, BAF: bioaccumulation factor, BDL: below detection limit Cys: cysteine, DTPA: diethylenetriaminepentaacetic acid, DW: dry weight, EDDHA: ethylenediamine-N,N′-bis(2-hydroxyphenylacetic) acid, HEDTA: hydroxyethylethylenediaminetriacetic acid, IPEN: International Pollutants Elimination Network (https://ipen.org/), LMWOA: low-molecular-weight organic acid, MPC: below maximum permission concentration, ND: not detectable, NTA: nitrilotriacetic acid, PGPR: plant growth-promoting rhizobacteria, TF: translocation factor","PeriodicalId":21744,"journal":{"name":"Separation & Purification Reviews","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80959384","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}
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