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Jiang Y, Liu L, Jin B, Liu Y, Liang X. Critical review on the environmental behaviors and toxicity of triclosan and its removal technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 932:173013. [PMID: 38719041 DOI: 10.1016/j.scitotenv.2024.173013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 04/14/2024] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
As a highly effective broad-spectrum antibacterial agent, triclosan (TCS) is widely used in personal care and medical disinfection products, resulting in its widespread occurrence in aquatic and terrestrial environments, and even in the human body. Notably, the use of TCS surged during the COVID-19 outbreak, leading to increasing environmental TCS pollution pressure. From the perspective of environmental health, it is essential to systematically understand the environmental occurrence and behavior of TCS, its toxicological effects on biota and humans, and technologies to remove TCS from the environment. This review comprehensively summarizes the current knowledge regarding the sources and behavior of TCS in surface water, groundwater, and soil systems, focusing on its toxicological effects on aquatic and terrestrial organisms. Effluent from wastewater treatment plants is the primary source of TCS in aquatic systems, whereas sewage application and/or wastewater irrigation are the major sources of TCS in soil. Human exposure pathways to TCS and associated adverse outcomes were also analyzed. Skin and oral mucosal absorption, and dietary intake are important TCS exposure pathways. Reducing or completely degrading TCS in the environment is important for alleviating environmental pollution and protecting public health. Therefore, this paper reviews the removal mechanisms, including adsorption, biotic and abiotic redox reactions, and the influencing factors. In addition, the advantages and disadvantages of the different techniques are compared, and development prospects are proposed. These findings provide a basis for the management and risk assessment of TCS and are beneficial for the application of treatment technology in TCS removal.
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Affiliation(s)
- Yanhong Jiang
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Liangying Liu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
| | - Biao Jin
- University of Chinese Academy of Sciences, Beijing 100049, PR China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China
| | - Yi Liu
- Shandong Vocational College of Light Industry, Zibo 255300, PR China.
| | - Xiaoliang Liang
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
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2
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Novikau R, Lujaniene G. Adsorption behaviour of pollutants: Heavy metals, radionuclides, organic pollutants, on clays and their minerals (raw, modified and treated): A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 309:114685. [PMID: 35151139 DOI: 10.1016/j.jenvman.2022.114685] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/06/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
The increasing anthropogenic pressure results in environmental pollution and thus adversely affects the integrity of ecosystems. Consequently, various methods of removing pollutants from effluents have been developed and used to minimise this negative impact, with adsorption on clay minerals identified as the most promising approach. This review examines the adsorption of heavy metals, radionuclides, and organic pollutants on clays/clay minerals and their composites under diverse conditions and deals with the applications of these materials in the construction of engineering barriers for waste management. Additionally, we discuss the efficiency and mechanisms of pollutant adsorption on clays subjected to various treatments and modifications while describing the beneficial effects of such modification/treatment on adsorption performance, reusability, and in vivo/in vitro toxicity.
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Affiliation(s)
- Raman Novikau
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, Vilnius, 02300, Lithuania.
| | - Galina Lujaniene
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, Vilnius, 02300, Lithuania.
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3
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Feliciano RM, Ensano BMB, de Luna MDG, Futalan CM, Abarca RRM, Lu MC. Kinetics and thermodynamics of organo-sulfur-compound desorption from saturated neutral activated alumina. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:12473-12483. [PMID: 33864213 DOI: 10.1007/s11356-021-13913-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
Desulfurization of liquid fuels mitigates the amount of noxious sulfur oxides and particulates released during fuel combustion. Existing literature on oxidative-adsorptive desulfurization technologies focus on sulfur-in-fuel removal by various materials, but very little information is presented about their desorption kinetics and thermodynamics. Herein, we report for the first time, the mechanism of sulfur desorption from neutral activated alumina saturated with dibenzothiophene sulfone. Batch experiments were conducted to examine the effects of agitation rate, desorption temperature, sulfur content, and eluent type on sulfur desorption efficiencies. Results show enhanced desorption capacities at higher agitation rate, desorption temperature, and initial sulfur content. Desorption efficiency and capacity of acetone were found to be remarkably superior to ethanol, acetone:ethanol (1:1), and acetone:isopropanol (1:1). Desorption kinetics reveal excellent fit of the nonlinear pseudo-second-order equation on desorption data, indicating chemisorption as the rate-determining step. Results of the thermodynamics study show the spontaneous (ΔG° ≤ -2.08 kJ mol-1) and endothermic (ΔH° = 32.35 kJ mol-1) nature of sulfur desorption using acetone as eluent. Maximum regeneration efficiency was attained at 93% after washing the spent adsorbent with acetone followed by oven-drying. Scanning electron microscopy, Fourier transform infrared, and X-ray diffraction spectroscopy analyses reveal the intact and undamaged structure of neutral activated alumina even after adsorbent regeneration. Overall, the present work demonstrates the viability of neutral activated alumina as an efficient and reusable adsorbent for the removal of sulfur compounds from liquid fossil fuels.
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Affiliation(s)
- Reyson M Feliciano
- Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines Diliman, 1101, Quezon City, Philippines
| | - Benny Marie B Ensano
- University Core Research Center for Disaster-free and Safe Ocean City Construction, Dong-A University, Busan, 49315, Korea
| | - Mark Daniel G de Luna
- Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines Diliman, 1101, Quezon City, Philippines.
- Department of Chemical Engineering, University of the Philippines Diliman, 1101, Quezon City, Philippines.
| | - Cybelle M Futalan
- Department of Environmental Science, Ateneo de Manila University, 1101, Quezon City, Philippines
| | - Ralf Ruffel M Abarca
- Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines Diliman, 1101, Quezon City, Philippines
| | - Ming-Chun Lu
- Department of Environmental Engineering, National Chung Hsing University, 40227, Taichung, Taiwan.
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Tomei MC, Mosca Angelucci D, Daugulis AJ. Self-regenerating tubing bioreactor for removal of toxic substrates: Operational strategies in response to severe dynamic loading conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 723:138019. [PMID: 32213416 DOI: 10.1016/j.scitotenv.2020.138019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
A tubing TPPB (Two-Phase Partitioning Bioreactor) was operated with the objective of verifying the effective treatment of a phenolic synthetic wastewater with simultaneous polymeric tubing bioregeneration by introducing tubing effluent recycle and modifications to the Hydraulic Retention Time (HRT). 2,4-dichlorophenol (DCP) was employed as the target substrate and the bioreactor was operated for a 3 month period under severe loading conditions (from 77 to 384 mg/L d) with HRT in the tubing in the range of 2-4 h. Tubing effluent recycle (recycle flow rate/influent flow rate ratio = 0.3) was applied when a loss of performance was detected arising from the increased load. For HRT values of 3 and 4 h, almost complete DCP removal was achieved after a few days (1-5) of operation while for the 2 h HRT (i.e. in the most severe loading condition) the DCP removal was ≥97%. A beneficial effect on the process performance arising from recycle application was evident for all the operating conditions investigated, and was confirmed by statistical analysis. Essentially complete polymer bioregeneration was achieved when the bioreactor was operated at the lowest HRT (i.e. 2 h), combined with the application of tubing effluent recycle. The results of this study highlighted several advantages of the tubing TPPB configuration in a comparative analysis of different regeneration options, including the possibility of operating continuously with simultaneous bioregeneration and without the need for additional units or operational steps and extra-energy consumption.
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Affiliation(s)
- M Concetta Tomei
- Water Research Institute, C.N.R., Via Salaria km 29.300, CP 10, 00015 Monterotondo Stazione, Rome, Italy.
| | - Domenica Mosca Angelucci
- Water Research Institute, C.N.R., Via Salaria km 29.300, CP 10, 00015 Monterotondo Stazione, Rome, Italy
| | - Andrew J Daugulis
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada
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Electrochemical Oxidation of an Organic Dye Adsorbed on Tin Oxide and Antimony Doped Tin Oxide Graphene Composites. Catalysts 2020. [DOI: 10.3390/catal10020263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Electrochemical regeneration suffers from low regeneration efficiency due to side reactions like oxygen evolution, as well as oxidation of the adsorbent. In this study, electrically conducting nanocomposites, including graphene/SnO2 (G/SnO2) and graphene/Sb-SnO2 (G/Sb-SnO2) were successfully synthesized and characterized using nitrogen adsorption, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. Thereafter, the adsorption and electrochemical regeneration performance of the nanocomposites were tested using methylene blue as a model contaminant. Compared to bare graphene, the adsorption capacity of the new composites was ≥40% higher, with similar isotherm behavior. The adsorption capacity of G/SnO2 and G/Sb-SnO2 were effectively regenerated in both NaCl and Na2SO4 electrolytes, requiring as little charge as 21 C mg−1 of adsorbate for complete regeneration, compared to >35 C mg−1 for bare graphene. Consecutive loading and anodic electrochemical regeneration cycles of the nanocomposites were carried out in both NaCl and Na2SO4 electrolytes without loss of the nanocomposite, attaining high regeneration efficiencies (ca. 100%).
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Awad AM, Shaikh SM, Jalab R, Gulied MH, Nasser MS, Benamor A, Adham S. Adsorption of organic pollutants by natural and modified clays: A comprehensive review. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115719] [Citation(s) in RCA: 241] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Aazza M, Ahlafi H, Moussout H, Maghat H. Adsorption of metha-nitrophenol onto alumina and HDTMA modified alumina: Kinetic, isotherm and mechanism investigations. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Díez A, Sanromán M, Pazos M. Fenton-based processes for the regeneration of catalytic adsorbents. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.10.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Momina, Shahadat M, Isamil S. Regeneration performance of clay-based adsorbents for the removal of industrial dyes: a review. RSC Adv 2018; 8:24571-24587. [PMID: 35539168 PMCID: PMC9082090 DOI: 10.1039/c8ra04290j] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 06/14/2018] [Indexed: 11/25/2022] Open
Abstract
The present review covers the regeneration capacity and adsorption efficiency of different adsorbents for the treatment of industrial dyes to control water pollution. Various techniques and materials have been employed to remove organic pollutants from water; however, adsorption techniques using cost-effective, ecofriendly, clay-supported adsorbents are widely used owing to their simplicity and good efficiency. Among all the natural adsorbents, activated carbon has been found to be the most effective for dye adsorption; however, its use is restricted due to its high regeneration cost. Clays and modified clay-based adsorbents are the most efficient clarifying agents for organic pollutants as compared to activated carbon, organic/inorganic, and composite materials. Regeneration is an important aspect to stimulate the adsorption efficiency of the exhausted/spent adsorbent for water treatment. A number of techniques, including chemical treatment, supercritical extraction, thermal, and photocatalytic and biological degradation, have been developed to regenerate spent or dye-adsorbed clays. This review discusses how these techniques enhance the adsorption and retention potential of spent low-cost adsorbents and reflects on the future perspectives for their use in wastewater treatment.
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Affiliation(s)
- Momina
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus Nibong Tebal Pulau Pinang 14300 Malaysia
| | - Mohammad Shahadat
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus Nibong Tebal Pulau Pinang 14300 Malaysia
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, IIT Delhi Hauz Khas New Delhi-110016 India
- Department of Textile Technology, Indian Institute of Technology, IIT Delhi Hauz Khas New Delhi-110016 India
| | - Suzylawati Isamil
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus Nibong Tebal Pulau Pinang 14300 Malaysia
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Mikeska M, Bureček A, Dutko O, Simha Martynková G, Vallová S, Hružík L, Plachá D. Regeneration of organovermiculite with thermal treatment after sorption processes. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.05.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Comparative study of 2,4,6-trichlorophenol adsorption by montmorillonites functionalized with surfactants differing in the number of head group and alkyl chain. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.057] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Manna S, Saha P, Roy D, Sen R, Adhikari B. Removal of 2,4-dichlorophenoxyacetic acid from aqueous medium using modified jute. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.07.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Shape-controlled synthesis of one-dimensional α-MnO 2 nanocrystals for organic detection and pollutant degradation. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.01.050] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Removal of 4-Chlorophenol from Contaminated Water Using Activated Carbon from Dried Date Pits: Equilibrium, Kinetics, and Thermodynamics Analyses. MATERIALS 2016; 9:ma9040251. [PMID: 28773378 PMCID: PMC5502915 DOI: 10.3390/ma9040251] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/16/2016] [Accepted: 03/21/2016] [Indexed: 11/17/2022]
Abstract
Five different activated carbons (ACs) have been prepared from dried date pits using air and phosphoric acid as activating agents. The used phosphoric acid:date pit ratio dictated the characteristics of the prepared ACs; the equivalent BET-nitrogen surface area varied from 794 m2/g for a ratio of 5:1, to 1707 m2/g for a ratio of 2:1, whereas the micropore volume changed in value from 0.24 cm3/g for the 5:1 ratio to 0.59 cm3/g for the 2:1 ratio. The prepared ACs were tested to remove 4-chlorophenol (4-CP) from aqueous solutions by means of batch adsorption process. The prepared 2:1 AC exhibited the highest uptake with a maximum of 525 mg/g. Equilibrium pH studies showed that 4-CP removal was pH dependent; the maximum uptake occurred at an equilibrium pH value of 5.5. Dynamic studies showed that 4-CP uptake on 2:1 AC is rapid, with 80% of the maximum uptake achieved during the first 40 min. Both surface adsorption and intraparticle diffusion were identified to be effective adsorption mechanisms. Kinetic studies indicated a pseudo second-order reaction. Results of equilibrium adsorption experiments showed that the adsorption of the 4-CP on 2:1 AC is best described by the Langmuir model. The thermodynamics parameters of the adsorption (ΔG0, ΔH0, and ΔS0) were determined by studying the adsorption equilibrium at different temperatures. The values of these parameters indicated the spontaneous and endothermic nature of the adsorption phenomenon of 4-CP on the prepared ACs.
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Nourmoradi H, Avazpour M, Ghasemian N, Heidari M, Moradnejadi K, Khodarahmi F, Javaheri M, Moghadam FM. Surfactant modified montmorillonite as a low cost adsorbent for 4-chlorophenol: Equilibrium, kinetic and thermodynamic study. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.07.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Younker JM, Walsh ME. Impact of salinity and dispersed oil on adsorption of dissolved aromatic hydrocarbons by activated carbon and organoclay. JOURNAL OF HAZARDOUS MATERIALS 2015; 299:562-9. [PMID: 26259095 DOI: 10.1016/j.jhazmat.2015.07.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 07/14/2015] [Accepted: 07/23/2015] [Indexed: 05/25/2023]
Abstract
Adsorption capacity of phenol and naphthalene by powdered activated carbon (PAC), a commercial organoclay (OC) and a lab synthesized organoclay (BTMA) was studied using batch adsorption experiments under variable feed water quality conditions including single- and multi- solute conditions, fresh water, saline water and oily-and-saline water. Increasing salinity levels was found to reduce adsorption capacity of OC, likely due to destabilization, aggregation and subsequent removal of organoclay from the water column, but did not negatively impact adsorption capacity of PAC or BTMA. Increased dispersed oil concentrations were found to reduce the surface area of all adsorbents. This decreased the adsorption capacity of PAC for both phenol and naphthalene, and reduced BTMA adsorption of phenol, but did not negatively affect naphthalene removals by either organoclay. The presence of naphthalene as a co-solute significantly reduced phenol adsorption by PAC, but had no impact on organoclay adsorption. These results indicated that adsorption by PAC occurred via a surface adsorption mechanism, while organoclay adsorption occurred by hydrophobic or pi electron interactions. In general, PAC was more sensitive to changes in water quality than either of the organoclays evaluated in this study. However, PAC exhibited a higher adsorption capacity for phenol and naphthalene compared to both organoclays even in adverse water quality conditions.
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Affiliation(s)
- Jessica M Younker
- Department of Civil and Resource Engineering Dalhousie University 1360 Barrington Street Halifax, Nova Scotia B3H 4R2, Canada
| | - Margaret E Walsh
- Department of Civil and Resource Engineering Dalhousie University 1360 Barrington Street Halifax, Nova Scotia B3H 4R2, Canada.
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Ahmed MB, Zhou JL, Ngo HH, Guo W. Adsorptive removal of antibiotics from water and wastewater: Progress and challenges. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 532:112-26. [PMID: 26057999 DOI: 10.1016/j.scitotenv.2015.05.130] [Citation(s) in RCA: 487] [Impact Index Per Article: 54.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 05/26/2015] [Accepted: 05/28/2015] [Indexed: 04/15/2023]
Abstract
Antibiotics as emerging contaminants are of global concern due to the development of antibiotic resistant genes potentially causing superbugs. Current wastewater treatment technology cannot sufficiently remove antibiotics from sewage, hence new and low-cost technology is needed. Adsorptive materials have been extensively used for the conditioning, remediation and removal of inorganic and organic hazardous materials, although their application for removing antibiotics has been reported for ~30 out of 250 antibiotics so far. The literature on the adsorptive removal of antibiotics using different adsorptive materials is summarized and critically reviewed, by comparing different adsorbents with varying physicochemical characteristics. The efficiency for removing antibiotics from water and wastewater by different adsorbents has been evaluated by examining their adsorption coefficient (Kd) values. For sulfamethoxazole the different adsorbents followed the trend: biochar (BC)> multi-walled carbon nanotubes (MWCNTs)>graphite = clay minerals, and for tetracycline the adsorptive materials followed the trend: SWCNT > graphite > MWCNT = activated carbon (AC) > bentonite = humic substance = clay minerals. The underlying controlling parameters for the adsorption technology have been examined. In addition, the cost of preparing adsorbents has been estimated, which followed the order of BCs < ACs < ion exchange resins < MWCNTs < SWCNTs. The future research challenges on process integration, production and modification of low-cost adsorbents are elaborated.
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Affiliation(s)
- Mohammad Boshir Ahmed
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - John L Zhou
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
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Dammak N, Fakhfakh N, Fourmentin S, Benzina M. Treatment of gas containing hydrophobic VOCs by adsorption process on raw and intercalated clays. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1675-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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19
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Dammak N, Ouledltaief O, Fakhfakh N, Benzina M. Adsorption equilibrium studies for O
-xylene vapour and modified clays system. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5534] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nesrine Dammak
- University of Sfax; 3029 Sfax Tunisia
- Water, Energy and Environment Laboratory; ENIS; BP 3038 Sfax Tunisia
| | - Olfa Ouledltaief
- University of Sfax; 3029 Sfax Tunisia
- Water, Energy and Environment Laboratory; ENIS; BP 3038 Sfax Tunisia
| | - Nadim Fakhfakh
- University of Sfax; 3029 Sfax Tunisia
- Water, Energy and Environment Laboratory; ENIS; BP 3038 Sfax Tunisia
| | - Mourad Benzina
- University of Sfax; 3029 Sfax Tunisia
- Water, Energy and Environment Laboratory; ENIS; BP 3038 Sfax Tunisia
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20
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Jabłońska B. Sorption of phenol on rock components occurring in mine drainage water sediments. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.minpro.2011.12.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Pan J, Yao H, Li X, Wang B, Huo P, Xu W, Ou H, Yan Y. Synthesis of chitosan/γ-Fe2O3/fly-ash-cenospheres composites for the fast removal of bisphenol A and 2,4,6-trichlorophenol from aqueous solutions. JOURNAL OF HAZARDOUS MATERIALS 2011; 190:276-284. [PMID: 21466912 DOI: 10.1016/j.jhazmat.2011.03.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 03/10/2011] [Accepted: 03/11/2011] [Indexed: 05/30/2023]
Abstract
The chitosan/fly-ash-cenospheres/γ-Fe(2)O(3) (CTS/γ-Fe(2)O(3)/FACs) magnetic composites were prepared by microemulsion process. The resulting composites were characterized by XRD, FT-IR, SEM, TGA, DTG and VSM, and the results indicated that CTS/γ-Fe(2)O(3)/FACs exhibited magnetic property (M(s)=6.553 emu g(-1)) and thermal stability, and composed of chitosan wrapping magnetic γ-Fe(2)O(3) and fly-ash-cenospheres (thickness of the cross-linked chitosan was about 5.2 μm). Then the CTS/γ-Fe(2)O(3)/FACs were employed as adsorbents for the fast removal of bisphenol A (BPA) and 2,4,6-trichlorophenol (TCP) from aqueous solutions. The adsorption performances of CTS/γ-Fe(2)O(3)/FACs were investigated by batch mode experiments with respect to pH, temperature, initial concentration, contact time and binary solution system. The Langmuir isotherm model was fitted to the equilibrium data better than the Freundlich model, and the kinetic properties were well described by the pseudo-second-order equation. The effects of binary solution systems also demonstrated that BPA adsorption onto CTS/γ-Fe(2)O(3)/FACs was more affected by the simultaneous presence of competitive phenolic compound than that of TCP. In addition, the resulting composite reusability without obviously deterioration in performance was demonstrated by at least three repeated cycles.
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Affiliation(s)
- Jianming Pan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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Zahoor M, Mahramanlioglu M. Removal of Phenolic Substances from Water by Adsorption and Adsorption-Ultrafiltration. SEP SCI TECHNOL 2011. [DOI: 10.1080/01496395.2011.561269] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Jarraya I, Fourmentin S, Benzina M, Bouaziz S. The characterization of prepared organoclay materials (DDMA) and gas sorption of chlorobenzene. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20402] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Park Y, Ayoko GA, Frost RL. Application of organoclays for the adsorption of recalcitrant organic molecules from aqueous media. J Colloid Interface Sci 2011; 354:292-305. [DOI: 10.1016/j.jcis.2010.09.068] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 09/21/2010] [Accepted: 09/22/2010] [Indexed: 10/19/2022]
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25
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Pershina ED, Karpushin NA, Kazdobin KA. Aluminosilicate conductivity at the presence of water. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2010. [DOI: 10.3103/s1068375510040083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Mild pre-heating of organic cation-exchanged clays enhances their interactions with nitrobenzene in aqueous environment. ADSORPTION 2010. [DOI: 10.1007/s10450-010-9224-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Emreol M, Soycan N, Yapar S. Adsorption properties of microwave synthesized inorgano-organo montmorillonite. ASIA-PAC J CHEM ENG 2010. [DOI: 10.1002/apj.304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhu R, Zhu J, Ge F, Yuan P. Regeneration of spent organoclays after the sorption of organic pollutants: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2009; 90:3212-3216. [PMID: 19640631 DOI: 10.1016/j.jenvman.2009.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Revised: 06/14/2009] [Accepted: 06/29/2009] [Indexed: 05/28/2023]
Abstract
Clay minerals modified with organic ions, also known as organoclays, have found applications in a wide range of organic pollution control fields because of their excellent sorption capacity towards organic pollutants. Regeneration of the spent organoclays after the sorption of organic pollutants is of great importance during their application in pollution control. In this review, the reported methods for the regeneration of the spent organoclays are summarized, including biological degradation, photo-assisted oxidation, chemical extraction/desorption, supercritical extraction, thermal desorption, et al. The characteristics and applications of these methods are briefly described. It shows that most of these methods have been developed for regenerating spent organoclays from wastewater treatment. The biological regeneration method, as an in situ, low cost and easy-operating method, is applicable for regenerating spent organoclays not only from wastewater treatment, but also from soil and groundwater remediation.
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Affiliation(s)
- Runliang Zhu
- Department of Environmental Science and Technology, Xiangtan University, Xiangtan 411105, China
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Lin K, Pan J, Chen Y, Cheng R, Xu X. Study the adsorption of phenol from aqueous solution on hydroxyapatite nanopowders. JOURNAL OF HAZARDOUS MATERIALS 2009; 161:231-40. [PMID: 18573599 DOI: 10.1016/j.jhazmat.2008.03.076] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Revised: 03/17/2008] [Accepted: 03/19/2008] [Indexed: 05/23/2023]
Abstract
In this study, the hydroxyapatite (HAp) nanopowders prepared by chemical precipitation method were used as the adsorbent, and the potential of HAp nanopowders for phenol adsorption from aqueous solution was studied. The effect of contact time, initial phenol concentration, pH, adsorbent dosage, solution temperature and adsorbent calcining temperature on the phenol adsorption, and the adsorption kinetic, equilibrium and thermodynamic parameters were investigated. The results showed that the HAp nanopowders possessed good adsorption ability to phenol. The adsorption process was fast, and it reached equilibrium in 2h of contact. The initial phenol concentration, pH and the adsorbent calcining temperature played obvious effects on the phenol adsorption capacity onto HAp nanopowders. Increase in the initial phenol concentration could effectively increase the phenol adsorption capacity. At the same time, increase in the pH to high-acidity or to high-alkalinity also resulted in the increase in the phenol adsorption capacity. Increase in the HAp dosage could effectively increase the phenol adsorption percent. However, the higher calcining temperature of HAp nanopowders could obviously decrease the adsorption capacity. The maximum phenol adsorption capacity was obtained as 10.33mg/g for 400mg/L initial phenol concentrations at pH 6.4 and 60 degrees C. The adsorption kinetic and the isotherm studies showed that the pseudo-second-order model and the Freundlich isotherm were the best choices to describe the adsorption behaviors. The thermodynamic parameters suggested that the adsorption of phenol onto HAp was physisorption, spontaneous and endothermic in nature.
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Affiliation(s)
- Kaili Lin
- Center of Functional Nanomaterials and Devices, Engineering Research Center for Anophotonics & Advanced Instrument Ministry of Education, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, PR China.
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Zhu L, Tian S, Zhu J, Shi Y. Silylated pillared clay (SPILC): A novel bentonite-based inorgano–organo composite sorbent synthesized by integration of pillaring and silylation. J Colloid Interface Sci 2007; 315:191-9. [PMID: 17659295 DOI: 10.1016/j.jcis.2007.06.053] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 05/30/2007] [Accepted: 06/19/2007] [Indexed: 11/24/2022]
Abstract
This research examines the feasibility of synthesizing inorgano-organo composites based on bentonite-silylated pillared interlayered clays (SPILCs) by pre-pillaring of bentonite with the Keggin ion (hydroxyaluminum polycation) and then silylating with alkylchlorosilanes. The results of organic carbon content analysis, FTIR, XRD, and DTA/TG indicated that the silyl group can be successfully grafted to the inner surface of pillared interlayered clays (PILCs) through reaction with the OH groups of the pillars and the d-spacing of synthesized PILCs and SPILCs were almost the same. SPILCs have both the higher organic carbon content relative to original bentonite and PILCs and the better surface and pore properties relative to surfactants-modified organobentonites. A comparison of the modifier demand of SPILCs and CTMAB-bentonites indicated that the silylation of PILCs was a modifier-economized process for organically modification of bentonite. The heat-resistant temperature of SPILCs, 508 degrees C for OTS-Al-PILC and 214 degrees C for TMCS-Al-PILC, are more excellent organobentonites. Unlike the partition-predominated sorption mechanisms of organobentonites, both adsorption and partition are important components of sorption mechanism of SPILCs. The VOC sorption capacity of SPILCs is approximately same with that of organobentonites and the hydrophobicity of SPILCs is superior to that of PILCs.
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Affiliation(s)
- Lizhong Zhu
- Department of Environmental Science, Xixi Campus, Zhejiang University, Hangzhou 310028, People's Republic of China.
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Lu Q, Sorial GA. The effect of functional groups on oligomerization of phenolics on activated carbon. JOURNAL OF HAZARDOUS MATERIALS 2007; 148:436-45. [PMID: 17442485 DOI: 10.1016/j.jhazmat.2007.02.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Revised: 02/25/2007] [Accepted: 02/27/2007] [Indexed: 05/14/2023]
Abstract
Adsorption of seven phenolic compounds, namely phenol, 2-methylphenol, 2-ethylphenol, 2-chlorophenol, 2-nitrophenol, 4-chlorophenol, and 4-nitrophenol on granular activated carbon (GAC) F400 and two activated carbon fibers (ACFs), ACC-10 and ACC-15 were conducted to study the impact of functional groups on oligomerization. Single solute adsorption and binary solute adsorption were conducted under anoxic (absence of molecular oxygen) and oxic (presence of molecular oxygen) conditions at 23+/-1 degrees C. For F400, the critical oxidation potential (COP), influenced by substitution of functional group, was found to be a limiting factor in oligomerization of adsorbates. For ACC-10, which has narrow pore size distribution (PSD) and small critical pore diameter (8.0A), only phenol and 2-methylphenol showed occurrence of oligomerization under oxic conditions. The degree of oligomerization under oxic conditions was related to the PSD of the adsorbent. The micro-pore diameter of the ACFs effectively reduced the oligomerization process. The oxic and anoxic binary adsorption isotherms of phenol/2-ethylphenol and 2-methylphenol/2-nitrophenol on ACC-10 overlapped indicating hampering of oligomerization by the limited micro-pore diameter of ACFs. The Ideal Adsorbed Solution Theory (IAST), using the Myers equation for correlating the single-solute anoxic isotherms, well predicted both anoxic and oxic binary isotherms.
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Affiliation(s)
- Qiuli Lu
- Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0071, USA
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Kuleyin A. Removal of phenol and 4-chlorophenol by surfactant-modified natural zeolite. JOURNAL OF HAZARDOUS MATERIALS 2007; 144:307-15. [PMID: 17112660 DOI: 10.1016/j.jhazmat.2006.10.036] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2006] [Revised: 10/09/2006] [Accepted: 10/11/2006] [Indexed: 05/12/2023]
Abstract
In this study the adsorption characteristics of phenol and 4-chlorophenol by surfactant-modified zeolite was investigated. Batch studies were performed to evaluate the effects of various experimental parameters such as contact time, adsorbent dose, initial concentration, and temperature on the removal of phenol and 4-chlorophenol. The sorption kinetics was tested for intraparticle diffusion, Elovich, and pseudo-second order reaction and rate constants of kinetic models were calculated. Equilibrium isotherms for the adsorption of phenol were analyzed by Freundlich, Langmuir, and Tempkin isotherm models. Freundlich isotherm was found to best represent the data for phenol and 4-chlorophenol adsorption.
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Affiliation(s)
- Ayşe Kuleyin
- Environmental Engineering Department, Ondokuzmayis University, 55139 Samsun, Turkey.
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Akbal F. Sorption of phenol and 4-chlorophenol onto pumice treated with cationic surfactant. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2005; 74:239-244. [PMID: 15644263 DOI: 10.1016/j.jenvman.2004.10.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2003] [Revised: 10/01/2004] [Accepted: 10/10/2004] [Indexed: 05/24/2023]
Abstract
In this study the sorption of phenol and 4-chlorophenol on pumice modified with the cationic surfactants hexadecyltrimethyl ammonium bromide (HDTMA) and benzyldimethyl tetradecylammonium chloride (BDTDA) was investigated. Experimental studies indicate that HDTMA-pumice and BDTDA-pumice have the capability to remove phenol and 4-chlorophenol from aqueous solution. The influence of initial concentration and adsorbent dosage was studied. The adsorption of phenol and 4-chlorophenol increased with increasing initial concentration and decreased with increasing amount of adsorbent used. The Freundlich adsorption isotherm was found to describe well the equilibrium adsorption data. The parameters of the Freundlich model have been determined using the adsorption data.
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Affiliation(s)
- Feryal Akbal
- Department of Environmental Engineering, Faculty of Engineering, Ondokuz Mayis University, Kurupelit, 55139 Samsun Turkey.
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Cartellieri A, Thiesen PH, Niemeyer B. Development of a basic procedure to design sorption processes. WASTE MANAGEMENT (NEW YORK, N.Y.) 2005; 25:985-93. [PMID: 16143502 DOI: 10.1016/j.wasman.2005.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2004] [Revised: 06/06/2005] [Accepted: 07/20/2005] [Indexed: 05/04/2023]
Abstract
The intention of this work is to offer, within the shortest time, an appropriate sorption separation process for almost any odour problem. The development is based on the preparation and characterisation of new adsorbents, the strategy for the selection of the best adsorbent, the process engineering and the choice of a suitable regeneration procedure. In this context a new method for the characterisation of the adsorbents - the adsorption profile analysis - was developed. The classification of the adsorbents was carried out by means of a cluster analysis, which simplifies the selection of the most suitable adsorbent for a particular problem. The physical and chemical behaviour of silica-adsorbents could be tailored by silanisation of the surfaces. Methods for the determination of process engineering parameters were developed, established and used. Adsorption kinetics and isotherms were determined with a magnetic adsorption balance. In a laboratory-scale fixed bed adsorber, breakthrough curves of different support materials were investigated and compared. For the investigations of different regeneration procedures, four innovative methods were employed: microwave desorption, ultrasonic desorption, ultrasonic-water desorption and extraction with water. Of the four desorption methods examined, microwave desorption and ultrasonic-water desorption demonstrated the best results.
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Affiliation(s)
- A Cartellieri
- Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg, Institute of Thermodynamics, Holstenhofweg 85, D-22043 Hamburg, Germany
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Robers A, Figura M, Thiesen PH, Niemeyer B. Desorption of odor-active compounds by microwaves, ultrasound, and water. AIChE J 2005. [DOI: 10.1002/aic.10334] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yang L, Zhou Z, Xiao L, Wang X. Chemical and biological regeneration of HDTMA-modified montmorillonite after sorption with phenol. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2003; 37:5057-5061. [PMID: 14620838 DOI: 10.1021/es0342493] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hexadecyltrimethylammonium (HDTMA)-modified montmorillonite (HMM) has recently been recognized as a potential sorbentto remove organic contaminants from environmental systems. Potential applications of this material highly depend on the efficiency of regenerating contaminant-sorbing HMM. In this study, we investigated a chemical (NaOH solution) and a biological (yeast Pityrosporum sp.) method to regenerate phenol-sorbing HMM. Our results showed that the sorption coefficient of phenol to HMM is not a linear function of the ratio of the substitution of HDTMA in HMM. Chemical regeneration of HMMs (0-0.7 times of its cation exchange capacity (CEC)) proved the existence of a phenol residual amount of about 3 mg x g(-1) in the HMMs tested when aqueous pH is maintained above 11. In addition, the obvious deductions in the sorption capacity of the chemically regenerated HMMs were observed after four cycles of sorption-regeneration. However, the sorption capacities of intermediate substituted HMMs (0.3-0.7 CEC) can be completely restored by bioregeneration with yeast for extended cycles of reuse. The results imply that the bioregeneration method with yeast could be a promising technique for in-situ bioremediation of phenol-contaminated groundwater in the subsurface or for treatment of phenol containing wastewater.
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Affiliation(s)
- Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, PR China.
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Freimund S, Sauter M, Rys P. Efficient adsorption of the mycotoxins zearalenone and T-2 toxin on a modified yeast glucan. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2003; 38:243-255. [PMID: 12716043 DOI: 10.1081/pfc-120019892] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
1,3-Beta-D-glucan derived from baker's yeast was chemically modified in two steps yielding crosslinked carboxymethyl glucan as the sodium salt (2). After cation exchange with hexadecyltrimethylammonium chloride, a hydrophobic adsorbent (3) was obtained which showed an excellent binding of the estrogenic mycotoxin zearalenone with a maximum adsorption of up to 183 mg/g. Compound 3 additionally showed a relatively high adsorption capacity for the trichothecene T-2 toxin of at least 10 mg/g. Starting from 2, various derivatives were prepared by cation exchange using quaternary ammonium salts bearing substituents besides methyl from four to 18 carbon atoms. The adsorption of T-2 toxin on these derivatives were compared with compound 3 leading to the conclusion that 3 is the best adsorbent of all investigated tetraalkylammonium-modified derivatives of 2.
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Affiliation(s)
- Stefan Freimund
- Swiss Federal Institute of Technology, Laboratory of Technical Chemistry, Zurich, Switzerland.
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