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Damiri Z, Jafari S, Yousefinejad S, Kazemian H. Enhanced adsorption of toluene on thermally activated ZIF-67: Characterization, performance, and modeling insights. Heliyon 2024; 10:e30745. [PMID: 38765099 PMCID: PMC11098846 DOI: 10.1016/j.heliyon.2024.e30745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 05/21/2024] Open
Abstract
The zeolitic imidazolate framework-67 (ZIF-67) has been explored for the dynamic adsorption of toluene vapor. We synthesized ZIF-67 through a straightforward room-temperature process and characterized it using XRD, FT-IR, DLS, and SEM techniques. The synthesized ZIF-67 possessed a Brunauer-Emmett-Teller (BET) surface area of 1578.7 m2/g and 0.76 μm particle size. Thermal activation under various conditions revealed that ZIF-67, activated in dry air at 250 °C, demonstrated optimal adsorption efficacy. Its adsorption capacity, time of breakthrough, and time of equilibration were 414.5 mg/g, 420 min, and 795 min, respectively. We investigated the impact of diverse operational parameters on adsorption through breakthrough curve analysis. An increase in the toluene concentration from 100 to 1000 ppm enhanced the adsorption capacity from 171 to 414 mg/g, while breakthrough time decreased from 1260 min to 462 min, respectively. Our findings show that increasing relative humidity from 0 to 70 % reduced 53.7 % in adsorption capacity and 46.3 % in breakthrough time. The competitive adsorption of toluene and ethylbenzene revealed that ZIF-67 had a higher selectivity for toluene adsorption. A 98 % adsorbent's regeneration efficiency at the first cycle reveals its reusability. The experimental data were successfully fitted to the Yan, Thomas, and Yoon-Nelson models to describe the adsorption process. The statistical validation of the model parameters confirms their reliability for estimating adsorption parameters, thus facilitating the design of fixed-bed adsorption columns for practical applications.
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Affiliation(s)
- Zabiholah Damiri
- Department of Occupational Health and Safety Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Jafari
- Department of Occupational Health and Safety Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Yousefinejad
- Department of Occupational Health and Safety Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Kazemian
- Materials Technology & Environmental Research (MATTER) Lab, University of Northern British Columbia, Prince George, BC, Canada
- Northern Analytical Lab Services (Northern BC's Environmental and Climate Solutions Innovation Hub), University of Northern British Columbia, Prince George, BC, Canada
- Environmental Sciences Program, Faculty of Environment, University of Northern British Columbia, Prince George, British Columbia, V2N4Z9, Canada
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2
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Rekaby M, Abou-Aly AI, El-Khatib M. Preparation and characterization of a novel nanocomposite based on MnCr-layered double oxide and CoFe 2O 4 spinel ferrite for methyl orange adsorption. Sci Rep 2023; 13:18006. [PMID: 37865692 PMCID: PMC10590389 DOI: 10.1038/s41598-023-45136-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023] Open
Abstract
Herein, the adsorption of methyl orange (MO), a dangerous anionic dye, from an aqueous solution was investigated using a novel magnetic nanocomposite adsorbent. A nanocomposite entitled manganese chromium-layered double oxide/cobalt spinel ferrite, (MnCr)-LDO5wt.%/CoFe2O4, which links the interlayer structural characteristics of layered double oxides (LDOs) with the magnetic properties of spinel ferrites (SFs) was synthesized using the eco-friendly co-precipitation technique. Determination of structural parameters, crystallite size, and micro-strain was done using X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) was used to determine grain shape and size. Surface analysis was performed using X-ray photoelectron spectroscopy (XPS) to identify elements and oxidation states present in the prepared nanocomposite. Vibrating sample magnetometer (VSM) was utilized to examine the magnetic characteristic. A comprehensive comparative study about the effectiveness and durability of CoFe2O4 and (MnCr)5wt.%/CoFe2O4 as nanoadsorbents for MO was conducted. Numerous variables, including contact time, MO concentration, adsorbent dosage, and pH were tested for their effects on the adsorption removal percentages. The findings showed that the maximum removal percentage was 86.1% for 25 ppm of MO was for 0.1 g/100 mL of (MnCr)-LDO5wt.%/CoFe2O4 at pH = 3. Investigations of isotherms and kinetics were conducted under batch conditions. The Langmuir isotherm matched the experimental data, for both nanoadsorbents, quite well due to the homogeneous distribution of active sites. Adsorption kinetics data were found to be compatible with intra-particle diffusion and pseudo-second order models for CoFe2O4 and (MnCr)5wt.%/CoFe2O4, respectively. A total of five adsorption-desorption cycles were performed to determine the prepared adsorbents' recyclable nature.
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Affiliation(s)
- M Rekaby
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - A I Abou-Aly
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - M El-Khatib
- Department of basic sciences, Faculty of Computer Science and Artificial Intelligence, Pharos University, Alexandria, Egypt
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3
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Tomon TRB, Estrada RJR, Fernandez RMD, Capangpangan RY, Lubguban AA, Dumancas GG, Alguno AC, Malaluan RM, Bacosa HP, Lubguban AA. Coconut power: a sustainable approach for the removal of Cr 6+ ions using a new coconut-based polyurethane foam/activated carbon composite in a fixed-bed column. RSC Adv 2023; 13:20941-20950. [PMID: 37448637 PMCID: PMC10336476 DOI: 10.1039/d3ra02266h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
To attain efficient removal of hexavalent chromium (Cr6+) from aqueous solutions, a novel polyurethane foam-activated carbon (PUAC) adsorbent composite was developed. The composite material was synthesized by the binding of coconut shell-based activated carbon (AC) onto a coconut oil-based polyurethane matrix. To thoroughly characterize the physicochemical properties of the newly developed material, various analytical techniques including FTIR spectroscopy, SEM, XRD, BET, and TGA analyses were conducted. The removal efficiency of the PUAC composite in removing Cr6+ ions from aqueous solutions was evaluated through column experiments with the highest adsorption capacity of 28.41 mg g-1 while taking into account variables such as bed height, flow rate, initial Cr6+ ion concentration, and pH. Experimental data were fitted using Thomas, Yoon-Nelson, and Adams-Bohart models to predict the column profiles and the results demonstrate high breakthrough and exhaustion time dependence on these variables. Among the obtained R2 values of the models, a better fit was observed using the Thomas and Yoon-Nelson models, indicating their ability to effectively predict the adsorption of Cr6+ ions in a fixed bed column. Significantly, the exhausted adsorbent can be conveniently regenerated without any noteworthy loss of adsorption capability. Based on these findings, it can be concluded that this new PUAC composite material holds significant promise as a potent sorbent for wastewater treatment backed by its excellent performance, cost-effectiveness, biodegradability, and outstanding reusability.
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Affiliation(s)
- Tomas Ralph B Tomon
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Renz John R Estrada
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Rubie Mae D Fernandez
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Rey Y Capangpangan
- Department of Physical Sciences and Mathematics, Mindanao State University at Naawan 9023 Naawan Philippines
| | - Alona A Lubguban
- Department of Mathematics, Statistics, and Computer Studies, University of the Philippines, Rural High School Paciano Rizal Bay, 4033 Laguna Philippines
| | - Gerard G Dumancas
- Department of Chemistry, The University of Scranton Scranton PA 18510 USA
| | - Arnold C Alguno
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Physics, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Roberto M Malaluan
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Chemical Engineering and Technology, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Hernando P Bacosa
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Arnold A Lubguban
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Chemical Engineering and Technology, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
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Lv N, Li X. Phosphorus removal from wastewater using Ca-modified attapulgite: Fixed-bed column performance and breakthrough curves analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 328:116905. [PMID: 36521218 DOI: 10.1016/j.jenvman.2022.116905] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/21/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
The adsorbent calcium-modified attapulgite (Ca-GAT) prepared by calcium chloride modification and high temperature treatment (700 °C) has proved to remove phosphorus in low-concentration phosphorus wastewater in batch adsorption experiments. Dynamic adsorption performance and industrial application potential still need further determination. This study explored the effects of various parameters on the dynamic phosphorus adsorption, including initial phosphate concentration (2-10 mg/L), flow rate (1-3 mL/min) and adsorption bed height (2-6 cm). Phosphorus adsorption ability improved and the breakthrough time increased with the increase of bed height, flow rate, and a decrease in initial phosphorus concentration. Breakthrough curves fitted four models, the Adams-Bohart, Thomas, Yoon-Nelson and Bed depth service time (BDST). The maximum adsorption amount determined by the Thomas model obtained 13.477 mg/g. The saturated fixed-bed column were regenerated with NaOH, NaOH + NaCl and HCl, among which 0.5 mol/L NaOH had the best regeneration effect. During the utilization of a large fixed-bed to treat the actual membrane bioreactor (MBR) effluent, the breakthrough point (0.5 mg/L) was obtained after 177 h. These results implied that Ca-GAT had an application potential for the treatment of low-concentration phosphorus wastewater (2 mg/L).
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Affiliation(s)
- Na Lv
- Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, PR China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, PR China
| | - Xiufen Li
- Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, PR China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, PR China.
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5
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Gomes WE, Corrêa AA, Beatto TG, Etchegaray A, Nogueira AB, Mendes RK. Removal of p-cresol using wash waters from lipopeptide production. ENVIRONMENTAL TECHNOLOGY 2023; 44:334-341. [PMID: 34407726 DOI: 10.1080/09593330.2021.1970821] [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: 05/28/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
This work shows the efficiency of wash waters from lipopeptide production as a remediation strategy to treat urban water samples contaminated with p-cresol. The harvesting step in surfactin production involved a centrifugation step, generating a major soluble fraction and a fraction that is adsorbed to the biomass. The adsorbed fraction was recovered by washing steps. These wash waters containing lipopeptides (mostly surfactins), were successfully used to adsorb and solubilize p-cresol. The method of decontamination applied to an artificially contaminated natural water was monitored using a biosensor based on laccase/magnetic nanoparticles. Given the amount of surfactin within the wash water, the removal of p-cresol from artificially contaminated water was approximately 46.0%. This result confirms the successful and sustainable application of surfactin-rich wash waters to remove p-cresol from artificially contaminated natural water. The adsorption mechanism is potentially based on a multi-layer adsorption process, considering Langmuir and Freundlich adsorption isotherms.
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Affiliation(s)
- Wyllerson Evaristo Gomes
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
| | - Amanda Arthuzo Corrêa
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
| | - Thainá Godoy Beatto
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
| | - Augusto Etchegaray
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
| | - Alessandra Borin Nogueira
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
| | - Renata Kelly Mendes
- Faculdade de Química, Centro de Ciências Exatas, Ambientais e de Tecnologias, Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS), Campinas, Brasil
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6
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Bai S, Li J, Ding W, Chen S, Ya R. Removal of boron by a modified resin in fixed bed column: Breakthrough curve analysis using dynamic adsorption models and artificial neural network model. CHEMOSPHERE 2022; 296:134021. [PMID: 35189189 DOI: 10.1016/j.chemosphere.2022.134021] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/13/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Continuous removal of toxic element boron from aqueous solution was investigated with new phenolic hydroxyl modified resin (T-resin) using a fixed bed column reactor operated under various flow rates, bed height and influent concentrations. The breakthrough time, exhaustion time and uptake capacity of the column bed increased with increasing column bed height, whereas decreased with increasing influent flow rate. The breakthrough time and exhaustion time decreased, but uptake capacity increased with increasing influent concentration, and actual uptake capacity was obtained as 6.52 mg/g at a concentration of 7.64 mg/L. The three conventional models of bed depth service time (BDST), Thomas and Yoon-Nelson were used to appropriately predict the whole breakthrough behavior of the column and to estimate the characteristic model parameters for boron removal. However, artificial neural network (ANN) model was more accurate than the conventional models with the least relative error and the highest correlation coefficients. By the relative importance of the operational parameters obtained from ANN model, the sequence is as follows: total effluent time > initial concentration > flow rate > column height. The adsorption capacity of boron was changed between 5.24 and 1.74 mg/g during the five time regeneration. From the life factor calculation, it is suggested that the column bed could avoid the breakthrough time of t = 0 for 6.8 cycles, whereas, the uptake capacity would be zero after 7.8 cycles.
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Affiliation(s)
- Shuqin Bai
- Green Intelligence Environmental School, Yangtze Normal University, No. 16 Juxian Road, Fuling, Chongqing, 408100, China; School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot, 010021, China.
| | - Jiaxin Li
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot, 010021, China
| | - Wei Ding
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Shuxuan Chen
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot, 010021, China
| | - Ru Ya
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot, 010021, China
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Modeling of cadmium(II) removal in a fixed bed column utilizing hydrochar-derived activated carbon obtained from discarded mango peels. Sci Rep 2022; 12:8001. [PMID: 35568697 PMCID: PMC9107476 DOI: 10.1038/s41598-022-11574-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/14/2022] [Indexed: 11/23/2022] Open
Abstract
Cadmium is found in many underdeveloped countries' aquatic bodies. Therefore, contaminated water should be treated before consumption; henceforth, efficient and customized point-of-use filtration is foreseeable. Traditionally, carbon-based sorbents have been utilized for such treatments, but alternative sources are also being investigated. Hydrochars made from mango peels using a thermal activation process were employed as an adsorbent instead of activated carbon in this investigation. The prepared material was porous with active surface functionalities, and the interaction of cadmium with the surface was possibly ion-exchange in nature. The performance of a material for a candle water filtering system with a 2.5 cm internal diameter and a 30.48 cm column height was determined using the parameters acquired by the Thomas model. The material was found to be highly efficient at 453.5 L/min/Filter water, whereas 31670.6 L/min/Filter can be treated if the break point and exhaustion point are considered, respectively, as the candle replacement time. These findings indicate that activated hydrochar might be a suitable sorbent for removing cadmium ions from contaminated water.
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Blagojev N, Šćiban M, Vasić V, Kukić D, Pavličević J, Lubura J, Bera O. Use of exhausted biosorbent ash as eco‐friendly filler in natural rubber. POLYM INT 2022. [DOI: 10.1002/pi.6423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nevena Blagojev
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Marina Šćiban
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Vesna Vasić
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Dragana Kukić
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Jelena Pavličević
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Jelena Lubura
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
| | - Oskar Bera
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1 21000 Novi Sad Serbia
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Li Z, Zhang T, Li H. Sorption of Se(IV) from aqueous solution by wheat bran-hydroxyapatite (HA) composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58721-58729. [PMID: 34118005 DOI: 10.1007/s11356-021-14787-5] [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: 03/15/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
Natural biocompatible material is promising candidate for selenite sorption from water since it allows to reuse selenium while dispose of waste materials. In this study, innovative wheat bran-hydroxyapatite (HA) composite was prepared by in situ precipitation method. Scanning electronic microscopy (SEM) and X-ray diffraction (XRD) revealed that the hydroxyapatite aggregated in the fiber matrix of the wheat bran. The results of batch sorption experiments including sorption kinetics, isotherms, and the effect of solution pH showed that the sorption of Se(IV) on the wheat bran-HA adsorbent was fast, endothermic, and pH-independent in the range from 5.0 to 7.0. Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis suggested that interaction occurred between Se(IV) and the hydroxyl groups on the composite. Column studies showed that wheat bran-HA composite was suitable to be utilized for continuous Se(IV) removal. The wheat bran-HA composite has a potential application for Se(IV) removal in water treatment.
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Affiliation(s)
- Zhijian Li
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, 450001, China.
| | - Tong Zhang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Haifeng Li
- College of Bioengineering, Henan University of Technology, Zhengzhou, 450001, China
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Yuan S, Liu Q, Zhu L, Ning J, Yang H, Ning K, He Y. Emulsion hydrogel microbeads encapsulating extractants prepared by O/W/O double Pickering emulsions for the recovery of Cu(II) from water. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Environmental Impacts of Selenium Contamination: A Review on Current-Issues and Remediation Strategies in an Aqueous System. WATER 2021. [DOI: 10.3390/w13111473] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In both aquatic and terrestrial environment, selenium contamination may exist at concentrations above the micronutrient limit. Since there is such a narrow bandwidth between which selenium concentration is acceptable, the health of the public may be at risk of selenium toxicity once the concentration increases beyond a threshold. Selenium contamination in an aqueous environment can occur due to anthropogenic activities and/or from natural sources. This study presents a review of the forms of selenium, inorganic and organic selenium contamination, mobilization, analytical methods for various forms of selenium and remediation strategies. The review also provides recent advances in removal methods for selenium from water including bioremediation, precipitation, coagulation, electrocoagulation, adsorption, nano-zerovalent iron, iron co-precipitation and other methods. A review of selenomethionine and selenocysteine removal strategy from industrial wastewaters is presented. Selenium resource recovery from copper ore processing has been discussed. Various analytical methods used for selenium and heavy metal analysis were compared. Importantly, existing knowledge gaps were identified and prospective areas for further research were recommended.
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12
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Preparation of wheat bran-titanium dioxide (TiO2) composite and its application for selenium adsorption. J Cereal Sci 2021. [DOI: 10.1016/j.jcs.2021.103230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Catizzone E, Sposato C, Romanelli A, Barisano D, Cornacchia G, Marsico L, Cozza D, Migliori M. Purification of Wastewater from Biomass-Derived Syngas Scrubber Using Biochar and Activated Carbons. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18084247. [PMID: 33923770 PMCID: PMC8073644 DOI: 10.3390/ijerph18084247] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/06/2021] [Accepted: 04/13/2021] [Indexed: 11/29/2022]
Abstract
Phenol is a major component in the scrubber wastewater used for syngas purification in biomass-based gasification plants. Adsorption is a common strategy for wastewater purification, and carbon materials, such as activated carbons and biochar, may be used for its remediation. In this work, we compare the adsorption behavior towards phenol of two biochar samples, produced by pyrolysis and gasification of lignocellulose biomass, with two commercial activated carbons. Obtained data were also used to assess the effect of textural properties (i.e., surface area) on phenol removal. Continuous tests in lab-scale columns were also carried out and the obtained data were processed with literature models in order to obtain design parameters for scale-up. Results clearly indicate the superiority of activated carbons due to the higher pore volume, although biomass-derived char may be more suitable from an economic and environmental point of view. The phenol adsorption capacity increases from about 65 m/g for gasification biochar to about 270 mg/g for the commercial activated carbon. Correspondingly, service time of commercial activated carbons was found to be about six times higher than that of gasification biochar. Finally, results indicate that phenol may be used as a model for characterizing the adsorption capacity of the investigated carbon materials, but in the case of real waste water the carbon usage rate should be considered at least 1.5 times higher than that calculated for phenol.
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Affiliation(s)
- Enrico Catizzone
- ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Department of Energy Technologies and Renewable Sources, I-75026 Rotondella, Italy; (C.S.); (A.R.); (D.B.); (G.C.)
- Correspondence:
| | - Corradino Sposato
- ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Department of Energy Technologies and Renewable Sources, I-75026 Rotondella, Italy; (C.S.); (A.R.); (D.B.); (G.C.)
| | - Assunta Romanelli
- ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Department of Energy Technologies and Renewable Sources, I-75026 Rotondella, Italy; (C.S.); (A.R.); (D.B.); (G.C.)
| | - Donatella Barisano
- ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Department of Energy Technologies and Renewable Sources, I-75026 Rotondella, Italy; (C.S.); (A.R.); (D.B.); (G.C.)
| | - Giacinto Cornacchia
- ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Department of Energy Technologies and Renewable Sources, I-75026 Rotondella, Italy; (C.S.); (A.R.); (D.B.); (G.C.)
| | - Luigi Marsico
- Department of Environmental and Chemical Engineering, University of Calabria, via P. Bucci, 44a, I-87036 Rende, Italy; (L.M.); (D.C.); (M.M.)
| | - Daniela Cozza
- Department of Environmental and Chemical Engineering, University of Calabria, via P. Bucci, 44a, I-87036 Rende, Italy; (L.M.); (D.C.); (M.M.)
| | - Massimo Migliori
- Department of Environmental and Chemical Engineering, University of Calabria, via P. Bucci, 44a, I-87036 Rende, Italy; (L.M.); (D.C.); (M.M.)
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Han X, Zhang Y, Zheng C, Yu X, Li S, Wei W. Enhanced Cr(VI) removal from water using a green synthesized nanocrystalline chlorapatite: Physicochemical interpretations and fixed-bed column mathematical model study. CHEMOSPHERE 2021; 264:128421. [PMID: 33011481 DOI: 10.1016/j.chemosphere.2020.128421] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/10/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Apatite-based minerals have attracted much attention in the remediation of heavy metal-contaminated environment. However, exploring apatite with efficient adsorption performance for inorganic oxyanions such as Cr(VI) remains a challenge. Herein, a novel nanocrystalline chlorapatite (ClAP) was promptly prepared by a green method using eggshell wastes as calcium source with the purpose to enhance Cr(VI) adsorption capability. The generated ClAP was characterized by XRD, SEM-EPMA, TEM, FTIR, and BET analyses. Batch and column experiments were subsequently carried out to explore the influencing factors, adsorption capacity and removal mechanism. Results showed that ClAP exhibited excellent stability and adsorption performance for Cr(VI) (63.47 mg g-1), which was much greater than that of hydroxyapatite and most reported materials. The adsorption process was fitted well by the pseudo-second-order model and the Langmuir model. In fixed bed column experiments, a novel time-fractional derivative model exhibited much better suitability in interpreting the observed breakthrough curves of Cr(VI) than traditional models. Furthermore, the reusability of ClAP in column was evaluated. Results showed that the adsorption capacity maintained well after consecutively reused for five cycles. Studies of the effect of pH, as well as FTIR and XPS investigations indicated that Cr(VI) adsorption was mainly ascribed to electrostatic interactions and surface complexation, while the reduction of Cr(VI) to the low-toxicity Cr(III) also existed in the adsorption process. The ClAP adsorbent was also successfully used for Cr(VI) remediation from real wastewater. Hence, nanocrystalline ClAP can be a promising material for enhancing the elimination of oxyanion contaminants such as Cr(VI) from water.
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Affiliation(s)
- Xuan Han
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
| | - Yong Zhang
- Department of Geological Sciences, University of Alabama, Tuscaloosa, AL, 35487, USA
| | - Chunmiao Zheng
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, 518055, China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiangnan Yu
- College of Mechanics and Materials, Hohai University, Nanjing, 210098, China
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Wei Wei
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, 518055, China.
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15
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Kumar S, Patra C, Narayanasamy S, Rajaraman PV. Performance of acid-activated water caltrop (Trapa natans) shell in fixed bed column for hexavalent chromium removal from simulated wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:28042-28052. [PMID: 32410190 DOI: 10.1007/s11356-020-09155-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The current study deals with the adsorption of hexavalent chromium using acid (H3PO4)-activated water caltrop (Trapa natans) shell (PWCS) using an up-flow packed bed column. Characteristics of breakthrough curve was obtained by investigating the effect of several operating parameters viz. inlet flow rate (2-6 mL/min), initial metal ion concentration (50-150 mg/L), and adsorbent's column bed height (1-3 cm). Elevated time of breakthrough curve was reported with elevated adsorbent bed height and vice versa with enhanced initial metal concentration and inlet flow rate of sorbate solution. Process design and breakthrough curves under varying conditions were predicted by applying column models like Thomas model, Adams-Bohart model, Yoon Nelson model, and bed depth service Time (BDST). Column behavior was better described by the BDST and Thomas model and simultaneously gave a good fit with the experimental data of breakthrough curves. The percentage removal for Cr(VI) from aqueous solution having pH 2 and temperature 303.15 K was observed to be 52.46%. The maximum adsorption capacity was found to be 87.31 mg/g according to the Thomas model. Conclusively, phosphoric acid-modified T. natans shell (PWCS) showed better sorption potential for of Cr(VI) species from simulated wastewater.
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Affiliation(s)
- Shravan Kumar
- Department of Chemical Engineering, Indian Institute of Technology, Guwahati, Assam, 781039, India
| | - Chandi Patra
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Assam, 781039, India
| | - Selvaraju Narayanasamy
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Assam, 781039, India
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González-López ME, Laureano-Anzaldo CM, Pérez-Fonseca AA, Arellano M, Robledo-Ortíz JR. Chemically Modified Polysaccharides for Hexavalent Chromium Adsorption. SEPARATION AND PURIFICATION REVIEWS 2020. [DOI: 10.1080/15422119.2020.1783311] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | | | | | - Martín Arellano
- Departamento de Ingeniería Química, CUCEI, Universidad De Guadalajara, Jalisco, México
| | - Jorge Ramón Robledo-Ortíz
- Departamento de Madera, Celulosa y Papel, CUCEI, Universidad de Guadalajara, Zapopan, Jalisco, México
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Alotaibi N, Hammud HH, Karnati RK, Hussain SG, Mazher J, Prakasam T. Cobalt-carbon/silica nanocomposites prepared by pyrolysis of a cobalt 2,2'-bipyridine terephthalate complex for remediation of cationic dyes. RSC Adv 2020; 10:17660-17672. [PMID: 35515619 PMCID: PMC9053640 DOI: 10.1039/d0ra02752a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 04/27/2020] [Indexed: 12/19/2022] Open
Abstract
Recently, carbon nanostructures have attracted interest because of their unique properties and interesting applications. Here, CoC@SiO2-850 (3) and CoC@SiO2-600 (4) cobalt–carbon/silica nanocomposites were prepared by solid-state pyrolysis of anthracene with Co(tph)(2,2′-bipy)·4H2O (1) complex in the presence of silica at 850 and 600 °C, respectively, where 2,2′-bipy is 2,2′-bipyridine and tph is the terephthalate dianion. Moreover, Co(μ-tph)(2,2′-bipy) (2) was isolated and its X-ray structure indicated that cobalt(ii) has a distorted trigonal prismatic coordination geometry. 2 is a metal–organic framework consisting of one-dimensional zigzag chains within a porous grid network. 3 and 4 consist of cobalt(0)/cobalt oxide nanoparticles with a graphitic shell and carbon nanotubes embedded in the silica matrix. They were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). XPS revealed that the nanocomposites are functionalized with oxygen-containing groups, such as carboxylic acid groups. In addition, the presence of metallic cobalt nanoparticles embedded in graphitized carbon was verified by XRD and TEM. The efficiency of 3 for adsorption of crystal violet (CV) dye was investigated by batch and column experiments. At 25 °C, the Langmuir adsorption capacity of 3 for CV was 214.2 mg g−1 and the fixed-bed column capacity was 36.3 mg g−1. The adsorption data were well fitted by the Freundlich isotherm and pseudo-second-order kinetic model. The adsorption process was spontaneous and endothermic. A cobalt–carbon@silica nanocomposite was synthesized from a cobalt 2,2′-bipyridine terephthalate complex and its adsorption behavior towards crystal violet dye was tested using batch and column techniques.![]()
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Affiliation(s)
- Nusaybah Alotaibi
- Department of Chemistry, College of Science, King Faisal University Al-Ahsa 31982 Saudi Arabia +966 13 589 9579
| | - Hassan H Hammud
- Department of Chemistry, College of Science, King Faisal University Al-Ahsa 31982 Saudi Arabia +966 13 589 9579
| | - Ranjith Kumar Karnati
- Department of Chemistry, College of Science, King Faisal University Al-Ahsa 31982 Saudi Arabia +966 13 589 9579
| | - Syed Ghazanfar Hussain
- Department of Physics, College of Science, King Faisal University Al-Ahsa 31982 Saudi Arabia
| | - Javed Mazher
- Department of Physics, College of Science, King Faisal University Al-Ahsa 31982 Saudi Arabia
| | - Thirumurugan Prakasam
- Chemistry Program, New York University Abu Dhabi (NYUAD) Abu Dhabi United Arab Emirates
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18
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Pholosi A, Naidoo EB, Ofomaja AE. Batch and continuous flow studies of Cr(VI) adsorption from synthetic and real wastewater by magnetic pine cone composite. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2019.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Gupta KN, Kumar R. Kinetic modeling and optimization of fraction of bed utilized for the gaseous phase removal of toluene in fixed bed adsorption column: Response surface methodology. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1583252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Kaushal Naresh Gupta
- Department of Chemical Engineering, Jaypee University of Engineering & Technology, Raghogarh, India
| | - Rahul Kumar
- Department of Chemical Engineering, UPES, Dehradun, India
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20
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Blagojev N, Kukić D, Vasić V, Šćiban M, Prodanović J, Bera O. A new approach for modelling and optimization of Cu(II) biosorption from aqueous solutions using sugar beet shreds in a fixed-bed column. JOURNAL OF HAZARDOUS MATERIALS 2019; 363:366-375. [PMID: 30321841 DOI: 10.1016/j.jhazmat.2018.09.068] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/21/2018] [Accepted: 09/26/2018] [Indexed: 05/22/2023]
Abstract
The potential use of sugar beet shreds for copper ions removal from aqueous solution in a fixed-bed column was investigated. Experiments were performed using Box-Behnken experimental design on three levels and three variables: concentration of the inlet solution (50-150 mg L-1), adsorbent dosage (8-12 g) and pH of the inlet solution (4.0-5.0). The obtained breakthrough curves were fitted with two common empirical models, Bohart-Adams and dose-response. Observing the asymmetric shape of the breakthrough curves, the new mathematical model was proposed. The new model proposes the breakthrough curve composed of two parts, sum of which gives the asymmetrical S-shaped curve, accurately matching experimental data. Regarding the lowest SSer (7.8·10-4) and highest R2 (0.9998), new model exhibited the best fit comparing to the commonly used models. RSM and ANN modelling were employed for process variables evaluation and optimization. The most influential parameter exhibiting negative influence on target response (critical time) was concentration of the inlet solution, while the adsorbent dosage exhibited positive influence. Optimization procedure revealed that the highest critical time (341.4 min) was achieved at following conditions: C0 = 50 mg·L-1, ma = 12 g and pH 4.53 by ANN, while RSM considered pH as insignificant factor and obtained 314.8 min as the highest response.
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Affiliation(s)
- Nevena Blagojev
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia
| | - Dragana Kukić
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia
| | - Vesna Vasić
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia
| | - Marina Šćiban
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia
| | - Jelena Prodanović
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia
| | - Oskar Bera
- University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21 000 Novi Sad, Serbia.
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21
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Amiri MJ, Khozaei M, Gil A. Modification of the Thomas model for predicting unsymmetrical breakthrough curves using an adaptive neural-based fuzzy inference system. JOURNAL OF WATER AND HEALTH 2019; 17:25-36. [PMID: 30758301 DOI: 10.2166/wh.2019.210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The Thomas equation is a popular model that has been widely used to predict breakthrough curves (BTCs) when describing the dynamic adsorption of different pollutants in a fixed-bed column system. However, BTCs commonly exhibit unsymmetrical patterns that cannot be predicted using empirical equations such as the Thomas model. Fortunately, adaptive neural-based fuzzy inference systems (ANFISs) can be used to model complex patterns found in adsorption processes in a fixed-bed column system. Consequently, a new hybrid model merging Thomas and an ANFIS was introduced to estimate the performance of BTCs, which were obtained for Cd(II) ion adsorption on ostrich bone ash-supported nanoscale zero-valent iron (nZVI). The results obtained showed that the fair performance of the Thomas model (NRMSE = 27.6% and Ef = 64.6%) improved to excellent (NRMSE = 3.8% and Ef = 93.8%) due to the unique strength of ANFISs in nonlinear modeling. The sensitivity analysis indicated that the initial solution pH was a more significant input variable influencing the hybrid model than the other operational factors. This approach proves the potential of this hybrid method to predict BTCs for the dynamic adsorption of Cd(II) ions by ostrich bone ash-supported nZVI particles.
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Affiliation(s)
- Mohammad Javad Amiri
- Department of Water Engineering, College of Agriculture, Fasa University, 74617-81189 Fasa, Iran E-mail:
| | - Maryam Khozaei
- Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz 71365, Iran
| | - Antonio Gil
- Department of Sciences, Public University of Navarra, Campus of Arrosadia, 31006 Pamplona, Spain
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22
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Nguyen LH, Vu TM, Le TT, Trinh VT, Tran TP, Van HT. Ammonium removal from aqueous solutions by fixed-bed column using corncob-based modified biochar. ENVIRONMENTAL TECHNOLOGY 2019; 40:683-692. [PMID: 29161983 DOI: 10.1080/09593330.2017.1404134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 10/26/2017] [Indexed: 06/07/2023]
Abstract
This study investigated the potential of removing ammonium ([Formula: see text]) from aqueous solutions using corncob based on modified biochar (MBCC) in the fixed-bed column. Corncob biochar was soaked in a mixture of HNO3 6.0 M and NaOH 0.3 M to prepare active binding sites for ammonium removal. The effect of initial ammonium concentrations (10-40 mg/L), flow rates (1-9 mL/min) and MBCC fixed-bed heights (8-24 cm) on the breakthrough characteristics of the adsorption system were studied. The results showed that the highest adsorption capacity of fix-bed column, the breakthrough time and value of Ct/Co were 12.83 mg/g, 480 min and 0.862 ± 0.025 at 10 mg/L of initial ammonium concentration, 8 cm of MBCC fixed-bed height and 3 mL/min of flow rate, respectively. The breakthrough curve model in this study also indicated that all Yoon-Nelson, Thomas and Adam-Bohart models well fit with the experimental data with a high R2. The results also proved that MBCC can be used as a potential adsorbent for eliminating [Formula: see text] in the fixed-bed column. The saturated MBCC was also regenerated and reused consecutively for four cycles. The usage of mixture of NaOH and NaCl in recovering MBCC was better than NaCl only.
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Affiliation(s)
- Lan Huong Nguyen
- a Faculty of Biotechnology and Environmental Engineering , Ho Chi Minh City University of Food Industry (HUFI) , Ho Chi Minh City , Viet Nam
| | - Thi Mai Vu
- b Hanoi University of Natural Resources and Environment , Ha Noi , Viet Nam
| | - Thi Trinh Le
- b Hanoi University of Natural Resources and Environment , Ha Noi , Viet Nam
| | - Van Tuyen Trinh
- c Institute of Environmental Technology (IET) , Vietnam Academy of Science and Technology , Ha Noi , Viet Nam
| | - Thi Pha Tran
- d Faculty of Environment , Thai Nguyen University of Agriculture and Forestry , Thai Nguyen city , Viet Nam
| | - Huu Tap Van
- e Faculty of Environment and Earth Science , Thai Nguyen University of Sciences (TNUS) , Thai Nguyen city , Viet Nam
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23
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Du Z, Zheng T, Wang P. Experimental and modelling studies on fixed bed adsorption for Cu(II) removal from aqueous solution by carboxyl modified jute fiber. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.06.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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He Y, Xiang Y, Zhou Y, Yang Y, Zhang J, Huang H, Shang C, Luo L, Gao J, Tang L. Selenium contamination, consequences and remediation techniques in water and soils: A review. ENVIRONMENTAL RESEARCH 2018; 164:288-301. [PMID: 29554620 DOI: 10.1016/j.envres.2018.02.037] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/04/2018] [Accepted: 02/26/2018] [Indexed: 05/21/2023]
Abstract
Selenium (Se) contamination in surface and ground water in numerous river basins has become a critical problem worldwide in recent years. The exposure to Se, either direct consumption of Se or indirectly may be fatal to the human health because of its toxicity. The review begins with an introduction of Se chemistry, distribution and health threats, which are essential to the remediation techniques. Then, the review provides the recent and common removal techniques for Se, including reduction techniques, phytoremediation, bioremediation, coagulation-flocculation, electrocoagulation (EC), electrochemical methods, adsorption, coprecipitation, electrokinetics, membrance technology, and chemical precipitation. Removal techniques concentrate on the advantages, drawbacks and the recent achievements of each technique. The review also takes an overall consideration of experimental conditions, comparison criteria and economic aspects.
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Affiliation(s)
- Yangzhuo He
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Yujia Xiang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
| | - Yuan Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Jiachao Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
| | - Hongli Huang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Cui Shang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Lin Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Jun Gao
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
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25
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Sathvika T, Soni A, Sharma K, Praneeth M, Mudaliyar M, Rajesh V, Rajesh N. Potential Application of Saccharomyces cerevisiae and Rhizobium Immobilized in Multi Walled Carbon Nanotubes to Adsorb Hexavalent Chromium. Sci Rep 2018; 8:9862. [PMID: 29959352 PMCID: PMC6026182 DOI: 10.1038/s41598-018-28067-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 06/14/2018] [Indexed: 01/05/2023] Open
Abstract
The presence of harmful contaminants in the waste stream is an important concern worldwide. The convergence of biotechnology and nanoscience offers a sustainable alternative in treating contaminated waters. Hexavalent chromium, being carcinogenic deserves effective and sustainable methods for sequestration. Here in, we report the immobilization of a prokaryote (Rhizobium) and eukaryote (Saccharomyces cerevisiae) in multiwalled carbon nanotubes (MWCNTs) for the effective adsorption of hexavalent chromium. The carboxylic groups were introduced into the MWCNTs during oxidation using potassium permanganate and were subjected to EDC-HOBT coupling to bind with microbial cell surface. FTIR, TGA, BET, FESEM-EDAX, HRTEM, XPS and confocal microscopy were the investigative techniques used to characterize the developed biosorbents. Experimental variables such as pH, adsorbent dosage, kinetics, isotherms and thermodynamics were investigated and it was observed that the system follows pseudo second order kinetics with a best fit for Langmuir isotherm. Electrostatic interactions between the functional groups in the microbial cell wall and hydrochromate anion at pH 2.0 propel the adsorption mechanism. The lab scale column studies were performed with higher volumes of the Cr(VI) contaminated water. Sodium hydroxide was used as the desorbing agent for reuse of the biosorbents. The sustainable biosorbents show prospects to treat chromium contaminated water.
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Affiliation(s)
- T Sathvika
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Amitesh Soni
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Kriti Sharma
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Malipeddi Praneeth
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Manasi Mudaliyar
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Vidya Rajesh
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - N Rajesh
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India.
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26
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Muliwa AM, Leswifi TY, Maity A, Ochieng A, Onyango MS. Fixed-bed operation for manganese removal from water using chitosan/bentonite/MnO composite beads. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:18081-18095. [PMID: 29691746 DOI: 10.1007/s11356-018-1993-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
In the present study, a new composite adsorbent, chitosan/bentonite/manganese oxide (CBMnO) beads, cross-linked with tetraethyl-ortho-silicate (TEOS) was applied in a fixed-bed column for the removal of Mn (II) from water. The adsorbent was characterised by scanning electron microscopy (SEM), Fourier transform infra-red (FT-IR), N2 adsorption-desorption and X-ray photoelectron spectroscopy (XPS) techniques, and moreover the point of zero charge (pHpzc) was determined. The extend of Mn (II) breakthrough behaviour was investigated by varying bed mass, flow rate and influent concentration, and by using real environmental water samples. The dynamics of the column showed great dependency of breakthrough curves on the process conditions. The breakthrough time (tb), bed exhaustion time (ts), bed capacity (qe) and the overall bed efficiency (R%) increased with an increase in bed mass, but decreased with the increase in both influent flow rate and concentration. Non-linear regression suggested that the Thomas model effectively described the breakthrough curves while large-scale column performance could be estimated by the bed depth service time (BDST) model. Experiments with environmental water revealed that coexisting ions had little impact on Mn (II) removal, and it was possible to achieve 6.0 mg/g breakthrough capacity (qb), 4.0 L total treated water and 651 bed volumes processed with an initial concentration of 38.5 mg/L and 5.0 g bed mass. The exhausted bed could be regenerated with 0.001 M nitric acid solution within 1 h, and the sorbent could be reused twice without any significant loss of capacity. The findings advocate that CBMnO composite beads can provide an efficient scavenging pathway for Mn (II) in polluted water.
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Affiliation(s)
- Anthony M Muliwa
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa.
| | - Taile Y Leswifi
- Centre for Renewable Energy and Water, Vaal University of Technology, Vanderbijlpark, South Africa
| | - Arjun Maity
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Aoyi Ochieng
- Centre for Renewable Energy and Water, Vaal University of Technology, Vanderbijlpark, South Africa
| | - Maurice S Onyango
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa
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27
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Malik DS, Jain CK, Yadav AK. Heavy Metal Removal by Fixed-Bed Column - A Review. CHEMBIOENG REVIEWS 2018. [DOI: 10.1002/cben.201700018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Davendra Singh Malik
- Gurukula Kangri Vishwavidyalaya; Department of Zoology and Environmental Sciences; 249404 Haridwar, Uttarakhand India
| | - Chakresh Kumar Jain
- National Institute of Hydrology; Environmental Hydrology Division; 247667 Roorkee, Uttarakhand India
| | - Anuj Kumar Yadav
- Gurukula Kangri Vishwavidyalaya; Department of Zoology and Environmental Sciences; 249404 Haridwar, Uttarakhand India
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28
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Removal of radioselenium oxyanions from aqueous solutions by adsorption onto hydrous zirconium oxide. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5916-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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29
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Zhu N, Qiao J, Ye Y, Yan T. Synthesis of mesoporous bismuth-impregnated aluminum oxide for arsenic removal: Adsorption mechanism study and application to a lab-scale column. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 211:73-82. [PMID: 29408085 DOI: 10.1016/j.jenvman.2018.01.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/14/2018] [Accepted: 01/15/2018] [Indexed: 06/07/2023]
Abstract
High mobility and toxicity of arsenic [As (III)] limit its removal from an aquatic environment and pose a threat to human health. In this work, batch adsorption experiments were conducted to investigate the adsorption capacity of bismuth-impregnated aluminum oxide (BiAl). Continuous application of As (III) removal was achieved via a lab-scale column reactor. Bismuth impregnation decreased the specific surface area of aluminum oxide and affected its pore size distribution. However, because of its abundant and well-proportioned mesoporous character, it also enhanced its adsorption capacity through the surface complexation of As (III). Batch adsorption experiments demonstrated a suitable Freundlich model and a fitted pseudo-second-kinetic model for As (III) adsorption. The main mechanism was chemisorption with both bismuth and aluminum atoms; however, physisorption also contributed to arsenic adsorption at the initial stage of the reaction. The Adams-Bohart model better described the breakthrough curves than the Thomas model. BiAl exhibited efficient As (III) adsorption over a wide pH range and could be applied to As (III) removal from wastewater. A high As (III) removal efficiency (91.6%) was obtained at an initial As (III) concentration of 5 mg L-1 at a flow rate of 1 mL min-1. This study indicates the potential for the practical application of BiAl in As (III) removal.
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Affiliation(s)
- Ningyuan Zhu
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Qiao
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
| | - Yanfang Ye
- College of Education, Zhejiang University, Hangzhou 310007, China
| | - Tingmei Yan
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China.
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Jang J, Miran W, Divine SD, Nawaz M, Shahzad A, Woo SH, Lee DS. Rice straw-based biochar beads for the removal of radioactive strontium from aqueous solution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 615:698-707. [PMID: 28992497 DOI: 10.1016/j.scitotenv.2017.10.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/10/2017] [Accepted: 10/03/2017] [Indexed: 06/07/2023]
Abstract
Biochars from agricultural residues have recently attracted significant attention as adsorbents for purifying contaminated water and wastewater. In this study, the removal of strontium from aqueous solutions was investigated using rice straw-based biochar (RSBC) beads in both batch and continuous fixed-bed column systems. The RSBC beads had negatively charged surfaces and exhibited a large surface area (71.53m2/g) with high micro-porosity. The synthesized beads showed a maximum adsorption capacity of 175.95mg/g at an initial strontium concentration of 10g/L at 35°C and pH7. Furthermore, they showed a good selectivity toward strontium ions in the presence of competing ions such as Al3+, Mg2+, and K+. The effects of different operating conditions like flow rate and initial strontium concentration were investigated in the fixed-bed column reactor. The Thomas, Adams-Bohart, and Yoon-Nelson models were applied to the experimental data to predict the breakthrough curves using non-linear regression. Both the Thomas and the Yoon-Nelson models were appropriate for describing entire breakthrough curves under different operating conditions. Overall, RSBC beads demonstrate great potential as efficient adsorbents for the treatment of wastewater polluted with strontium in a continuous operation mode.
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Affiliation(s)
- Jiseon Jang
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Waheed Miran
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Sewu D Divine
- Department of Chemical Engineering, Hanbat National University, 125 Dongseodae-ro, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Mohsin Nawaz
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Asif Shahzad
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Seung Han Woo
- Department of Chemical Engineering, Hanbat National University, 125 Dongseodae-ro, Yuseong-gu, Daejeon 34158, Republic of Korea.
| | - Dae Sung Lee
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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31
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Deng H, Li Y, Wu L, Ma X. The novel composite mechanism of ammonium molybdophosphate loaded on silica matrix and its ion exchange breakthrough curves for cesium. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:348-356. [PMID: 27823822 DOI: 10.1016/j.jhazmat.2016.10.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/12/2016] [Accepted: 10/28/2016] [Indexed: 06/06/2023]
Abstract
Long-lived 137Cs (over 30 years), a byproduct of the spent fuel fission processes, comprises the majority of high-level and prolific heat-generating waste in downstream processing. This study reports a novel sequential annealing mechanism with cross-linked network of polyvinyl alcohol, fabricating the composite of ammonium molybdophosphate loaded on silica matrix (SM-AMP20, 20wt% AMP) as an excellent granular ion exchanger for removal Cs+. When the matrix is remarkably sequential annealed, well-dispersed SM-AMP20 particles are formed by firmly anchoring themselves on controlling the porous characteristics and stable structure. The material crystallizes in the complex cubic space group Pn-3m with cell parameters of crystalline AMP formation. The breakthrough curve of Cs+ by SM-AMP20 follows the Thomas model with a high removal rate of 88.23% (∼10mg/L of Cs+) and breakthrough time as high as 26h (flow rate Q≈2.5mL/min and bed height Z≈11cm) at neutral pH. We also report on sorbents that could efficiently remove Cs+ ions from complex solutions containing different competitive cations (Na+, Al3+, Fe3+, and Ni2+, respectively) in large excess. Furthermore, this study shows that there is a probability for SM-AMP20 to recycle cesium using an eluent of 2-3mol/L NH4NO3 solution.
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Affiliation(s)
- Hao Deng
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Yuxiang Li
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, PR China; School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China; National Defense Key Discipline Laboratory for Nuclear Wastes and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, PR China.
| | - Lang Wu
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Xue Ma
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China
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32
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Mohan S, Singh DK, Kumar V, Hasan SH. Effective removal of Fluoride ions by rGO/ZrO2 nanocomposite from aqueous solution: Fixed bed column adsorption modelling and its adsorption mechanism. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2016.12.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Fixed-bed column studies for the removal of hazardous malachite green dye from aqueous solution using novel nano zerovalent iron algal biocomposite. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s41204-016-0007-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Kizito S, Wu S, Wandera SM, Guo L, Dong R. Evaluation of ammonium adsorption in biochar-fixed beds for treatment of anaerobically digested swine slurry: Experimental optimization and modeling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 563-564:1095-1104. [PMID: 27241205 DOI: 10.1016/j.scitotenv.2016.05.149] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/19/2016] [Accepted: 05/20/2016] [Indexed: 06/05/2023]
Abstract
Fixed-bed column experiments were performed to investigate the effect of influent concentration, flow rate, and adsorbent bed depth on ammonium adsorption from anaerobically digested swine slurry using three types of biochar made from corncobs (MCB), hardwood (WB), and mixed sawdust pellets (MSB). WB performed better than the other two biochar types with a maximum sorption capacity of 67-114mg/g due to its superior surface area and larger pore volume. Ammonium adsorption kinetics and dynamics depended on the influent NH4(+)-N concentration, applied inflow flow rate, and the depth of the fixed bed. Maximum sorption capacities under influent NH4(+)-N concentration of 500mg/L, were identified to be 114.2mg/g, 108.9mg/g, and 24.7mg/g at inflow rate of 15mL/min for WB, MCB, and MSB, respectively. The data shows that using deeper beds and applying lower flow rates could be a better strategy to increase ammonium adsorption in biochar-fixed beds. Moreover, three kinetic models (Thomas, Adams-Bohart (BDST), and Yoon-Nelson) were applied to the experimental data to predict breakthrough curves and determine characteristic adsorption parameters for process design. The applied models fitted data in the order: Thomas (R(2)=0.971)>BDST (R(2)=0.960)>Yoon-Nelson (R(2)=0.940). It was concluded that ammonium adsorption in biochar-fixed beds could be an effective method for routine cyclic treatment of slurry. However, further effluent polishing is required to meet discharge requirements.
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Affiliation(s)
- Simon Kizito
- Key Laboratory for Clean Renewable Energy Utilization Technology of Ministry of Agriculture, College of Engineering, China Agricultural University, Beijing 100083, People's Republic of China; College of Agriculture and Environmental Sciences, Makerere University, P.O Box 7062, Kampala, Uganda
| | - Shubiao Wu
- Key Laboratory for Clean Renewable Energy Utilization Technology of Ministry of Agriculture, College of Engineering, China Agricultural University, Beijing 100083, People's Republic of China.
| | - Simon Mdondo Wandera
- Key Laboratory for Clean Renewable Energy Utilization Technology of Ministry of Agriculture, College of Engineering, China Agricultural University, Beijing 100083, People's Republic of China
| | - Luchen Guo
- Key Laboratory for Clean Renewable Energy Utilization Technology of Ministry of Agriculture, College of Engineering, China Agricultural University, Beijing 100083, People's Republic of China
| | - Renjie Dong
- Key Laboratory for Clean Renewable Energy Utilization Technology of Ministry of Agriculture, College of Engineering, China Agricultural University, Beijing 100083, People's Republic of China
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35
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Ahmad MF, Haydar S. Evaluation of a newly developed biosorbent using packed bed column for possible application in the treatment of industrial effluents for removal of cadmium ions. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.12.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Xiao K, Han G, Li J, Dan Z, Xu F, Jiang L, Duan N. Evaluation of polyacrylic anion exchange resins on the removal of Cr(vi) from aqueous solutions. RSC Adv 2016. [DOI: 10.1039/c5ra22950b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The polyacrylic resin is oxidized by Cr(vi) anions, resulting in the decrease of exchange capacity and degradation of the resin matrix.
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Affiliation(s)
- Ke Xiao
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
- College of Water Sciences
| | - Guimei Han
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Jianhui Li
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Zhigang Dan
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Fuyuan Xu
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Linhua Jiang
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Ning Duan
- Technology Centre for Heavy Metal Cleaner Production Engineering
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
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37
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Sandhu AK, Cai Y, Janve B, Yang W, Yagiz Y, Marshall MR, Gu L. Mathematical Modeling of the Anthocyanins Adsorption/Desorption from Blueberries on Amberlite FPX-66 Resin in A Fixed Bed Column. J FOOD PROCESS ENG 2015. [DOI: 10.1111/jfpe.12323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Amandeep K. Sandhu
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
| | - Yun Cai
- Department of Food Science and Technology; Jinan University; Guangzhou Guangdong 510632 China
| | - Bhaskar Janve
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
| | - Wade Yang
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
| | - Yavuz Yagiz
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
| | - Maurice R. Marshall
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
| | - Liwei Gu
- Food Science and Human Nutrition Department; Institute of Food and Agricultural Sciences, University of Florida; Gainesville FL 32611 United States
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38
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Rajamohan N, Rajasimman M. Biosorption of Selenium using activated plant based sorbent – Effect of variables, isotherm and kinetic modeling. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Adsorption performance of continuous fixed bed column for the removal of methylene blue (MB) dye using Eucalyptus sheathiana bark biomass. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2153-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Li J, Liang D, Qin S, Feng P, Wu X. Effects of selenite and selenate application on growth and shoot selenium accumulation of pak choi (Brassica chinensis L.) during successive planting conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:11076-86. [PMID: 25794583 DOI: 10.1007/s11356-015-4344-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 03/09/2015] [Indexed: 05/15/2023]
Abstract
Selenate and selenite are two main kinds of inorganic selenium (Se) sources in soil, but these substances can pose threats to the environment. Phytoextraction is an emerging technology to remove Se from polluted soils by using a hyper-accumulator. In this study, a pot experiment was conducted to investigate Se phytoextraction potential of pak choi (Brassica chinensis L.) and to determine the effects of Se on growth and Se accumulation of pak choi under successive planting conditions (four crops). Results showed that Se concentration in pak choi shoots significantly increased as selenate and selenite rates increased. Se concentration increased in successive crops on soil treated with selenite; by contrast, Se concentration decreased in crops on soil treated with selenate. Se concentrations of pak choi on soil treated with selenate were higher than those on soil treated with selenite. The maximum Se accumulations amount in crops on selenite- and selenate-treated soil were 7818 and 8828 μg · pot(-1), respectively. High bioconcentration factor (BCF) values indicated that pak choi could accumulate more Se from Se-contaminated soil. The Se phytoextraction efficiency of pak choi increased under successive planting conditions in selenite and selenate treatments; the maximum Se phytoextraction efficiencies of four successive crops of pak choi on selenite- and selenate-treated soil were 4.91 and 31.90 %, respectively. These differences between selenate and selenite treatments were attributed to the differences in Se forms in soil. Total and available Se contents in soil decreased significantly during repeated planting crops on soil treated with selenate; conversely, total and available Se contents decreased slightly in crops on soil treated with selenite. These results suggested that pak choi could highly tolerate and accumulate Se. Thus, pak choi may remove Se from contaminated soil; indeed, pak choi can be used in the phytoextraction of Se in polluted soil.
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Affiliation(s)
- Jun Li
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
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41
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Awual MR, Yaita T, Suzuki S, Shiwaku H. Ultimate selenium(IV) monitoring and removal from water using a new class of organic ligand based composite adsorbent. JOURNAL OF HAZARDOUS MATERIALS 2015; 291:111-9. [PMID: 25771216 DOI: 10.1016/j.jhazmat.2015.02.066] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 02/18/2015] [Accepted: 02/25/2015] [Indexed: 05/26/2023]
Abstract
This work reports the selenium (Se(IV)) detection and removal from water by ligand functionalized organic-inorganic based novel composite adsorbent. The composite adsorbent was prepared by direct immobilization of N,N'-di(3-carboxysalicylidene)-3,4-diamino-5-hydroxypyrazole onto the mesoporous silica monolith. The adsorbent exhibited distinct color change in the presence of various concentrations of Se(IV). This was characterized by UV-vis spectroscopy, and the color change was observed by naked-eye observation. The detection limit was determined to be 1.14 μg/L. The effect of solution pH, interferential metal ions, contact time, initial Se(IV) concentration, and adsorbent regeneration were evaluated. The maximum sorption capacity was determined based on the initial concentration. The data fitted well to the Langmuir isotherm model, and the maximum Se(IV) sorption capacity was 111.12 mg/g. The presence of diverse competing ions did not affect the Se(IV) sorption capacity, and the adsorbent had almost no sorption capacity for these coexisting ions, which suggests the high selectivity to Se(IV) ions. The adsorbed Se(IV) was eluted with suitable eluent (0.10 M NaOH) and simultaneously regenerated into the initial form for the next operation. The excellent reusability of the adsorbent was justified after eight consecutive sorption-elution-regeneration cycles. The proposed adsorbent is cost-effective and environmentally friendly and a potential candidate for treatment of water containing Se(IV).
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Affiliation(s)
- Md Rabiul Awual
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan.
| | - Tsuyoshi Yaita
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Shinichi Suzuki
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Hideaki Shiwaku
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
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42
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Wang S, Qiu L, Dai H, Zeng X, Fang B. Highly pure 1,3-propanediol: Separation and purification from crude glycerol-based fermentation. Eng Life Sci 2015. [DOI: 10.1002/elsc.201500004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Shizhen Wang
- Department of Chemical and Biochemical Engineering; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen China
- The Key Lab for Synthetic Biotechnology of Xiamen City; Xiamen University; Xiamen China
| | - Longhui Qiu
- Department of Chemical and Biochemical Engineering; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen China
| | - Hongfei Dai
- Department of Chemical and Biochemical Engineering; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen China
| | - Xiaofei Zeng
- Department of Chemical and Biochemical Engineering; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen China
| | - Baishan Fang
- Department of Chemical and Biochemical Engineering; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen China
- The Key Lab for Synthetic Biotechnology of Xiamen City; Xiamen University; Xiamen China
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43
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Roh H, Yu MR, Yakkala K, Koduru JR, Yang JK, Chang YY. Removal studies of Cd(II) and explosive compounds using buffalo weed biochar-alginate beads. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.11.034] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Song R, Bai B, Puma GL, Wang H, Suo Y. Biosorption of azo dyes by raspberry-like Fe3O4@yeast magnetic microspheres and their efficient regeneration using heterogeneous Fenton-like catalytic processes over an up-flow packed reactor. REACTION KINETICS MECHANISMS AND CATALYSIS 2015. [DOI: 10.1007/s11144-015-0854-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Sánchez-Rodríguez S, Trujillo-Reyes J, Gutiérrez-Segura E, Solache-Ríos M, Colín-Cruz A. Removal of Indigo Carmine by a Ni Nanoscale Oxides/Schoenoplectus acutusComposite in Batch and Fixed Bed Column Systems. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.986579] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Jordan N, Ritter A, Scheinost AC, Weiss S, Schild D, Hübner R. Selenium(IV) uptake by maghemite (γ-Fe2O3). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:1665-1674. [PMID: 24422437 DOI: 10.1021/es4045852] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The mechanism of selenium(IV) uptake by maghemite was investigated on both the macroscopic and the molecular level. Maghemite nanoparticles exhibited fast adsorption kinetics toward selenium(IV). Batch experiments showed a decreased sorption with increasing pH (3.5-11). Ionic strength variations (0.01 to 0.1 M NaCl) had no significant influence on selenium(IV) uptake. Electrophoretic mobility measurements revealed a significant shift toward lower values of the isoelectric point of maghemite upon selenium(IV) uptake, suggesting the formation of inner-sphere surface complexes. At the molecular level, using X-ray Absorption Fine-Structure Spectroscopy (EXAFS), the formation of both bidentate binuclear corner-sharing ((2)C) and bidentate mononuclear edge-sharing ((1)E) inner-sphere surface complexes was observed, with a trend toward solely (1)E complexes at high pH. The absence of a tridentate surface complex as observed for arsenic(III) and antimonite(III) might be due to the relatively small size of the Se(IV)O3 unit. These new spectroscopic results can be implemented in reactive transport models to improve the prediction of selenium migration behavior in the environment as well as its monitoring through its interaction with maghemite or maghemite layers at the surface of magnetite. Due to its chemical stability even at low pH and its magnetization properties allowing magnetic separation, maghemite is a promising sorbing phase for the treatment of Se polluted waters.
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Affiliation(s)
- Norbert Jordan
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V. , 01328 Dresden, Germany
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47
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Chowdhury S, Chakraborty S, Saha PD. Response surface optimization of a dynamic dye adsorption process: a case study of crystal violet adsorption onto NaOH-modified rice husk. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:1698-1705. [PMID: 22648351 DOI: 10.1007/s11356-012-0989-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 05/15/2012] [Indexed: 06/01/2023]
Abstract
The adsorption of crystal violet from aqueous solution by NaOH-modified rice husk was investigated in a laboratory-scale fixed-bed column. A two-level three factor (2(3)) full factorial central composite design with the help of Design Expert Version 7.1.6 (Stat Ease, USA) was used for optimisation of the dynamic dye adsorption process and evaluation of interaction effects of different operating parameters: initial dye concentration (100-200 mg L(-1)), flow rate (10-30 mL min(-1)) and bed height (5-25 cm). A correlation coefficient (R (2)) value of 0.999, model F value of 1,936.59 and its low p value (<0.0001) along with lower value of coefficient of variation (1.38 %) indicated the fitness of the response surface quadratic model developed during the present study. Numerical optimisation applying desirability function was used to identify the optimum conditions for a targeted breakthrough time of 12 h. The optimum conditions were found to be initial solution pH=8.00, initial dye concentration=100 mg L(-1), flow rate=22.88 mL min(-1) and bed height=18.75 cm. A confirmatory experiment was performed to evaluate the accuracy of the optimised procedure. Under the optimised conditions, breakthrough appeared after 12.2 h and the column efficiency was determined as 99 %. The Thomas model showed excellent fit to the dynamic dye adsorption data obtained from the confirmatory experiment. Thereby, it was concluded that the current investigation gives valuable insights for designing and establishing a continuous wastewater treatment plant.
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Affiliation(s)
- Shamik Chowdhury
- Department of Biotechnology, National Institute of Technology-Durgapur, Durgapur, West Bengal, 713209, India
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48
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Chowdhury S, Saha PD. Artificial neural network (ANN) modeling of adsorption of methylene blue by NaOH-modified rice husk in a fixed-bed column system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:1050-1058. [PMID: 22562342 DOI: 10.1007/s11356-012-0912-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 04/02/2012] [Indexed: 05/31/2023]
Abstract
In this study, rice husk was modified with NaOH and used as adsorbent for dynamic adsorption of methylene blue (MB) from aqueous solutions. Continuous removal of MB from aqueous solutions was studied in a laboratory scale fixed-bed column packed with NaOH-modified rice husk (NMRH). Effect of different flow rates and bed heights on the column breakthrough performance was investigated. In order to determine the most suitable model for describing the adsorption kinetics of MB in the fixed-bed column system, the bed depth service time (BDST) model as well as the Thomas model was fitted to the experimental data. An artificial neural network (ANN)-based model was also developed for describing the dynamic dye adsorption process. An extensive error analysis was carried out between experimental data and data predicted by the models by using the following error functions: correlation coefficient (R(2)), average relative error, sum of the absolute error and Chi-square statistic test (χ(2)). Results show that with increasing bed height and decreasing flow rate, the breakthrough time was delayed. All the error functions yielded minimum values for the ANN model than the traditional models (BDST and Thomas), suggesting that the ANN model is the most suitable model to describe the fixed-bed adsorption of MB by NMRH. It is also more rational and reliable to interpret dynamic dye adsorption data through a process of ANN architecture.
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Affiliation(s)
- Shamik Chowdhury
- Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, Durgapur, WB 713209, India
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Bolan NS, Choppala G, Kunhikrishnan A, Park J, Naidu R. Microbial transformation of trace elements in soils in relation to bioavailability and remediation. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2013; 225:1-56. [PMID: 23494555 DOI: 10.1007/978-1-4614-6470-9_1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- Nanthi S Bolan
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA, Australia,
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Batch and continuous (fixed-bed column) biosorption of Cu(II) by Tamarindus indica fruit shell. KOREAN J CHEM ENG 2012. [DOI: 10.1007/s11814-012-0127-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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