1
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Novel chromatographic purification of succinic acid from whey fermentation broth by anionic exchange resins. Bioprocess Biosyst Eng 2022; 45:2007-2017. [DOI: 10.1007/s00449-022-02805-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/22/2022] [Indexed: 11/11/2022]
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2
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Virpiranta H, Leiviskä T, Taskila S, Tanskanen J. Bioregeneration of sulfate-laden anion exchange resin. WATER RESEARCH 2022; 224:119110. [PMID: 36126630 DOI: 10.1016/j.watres.2022.119110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
Ion exchange technology removes ionic compounds from waters effectively but treatment of the spent regenerant is expensive. The bioregeneration of sulfate-laden strong base anion exchange resin was successfully tested using both pure and mixed sulfate-reducing bacterial cultures. The resin was first used for removal of sulfate from neutral (pH 6.7 ± 0.5) synthetic sodium sulfate solutions, after which the spent resin was regenerated by incubating with a viable sulfate-reducing bacterial culture in batch and column modes. In the batch bioregeneration tests, the achieved bioregeneration was 36-95% of the original capacity of the fresh resin (112 mg SO42-/g) and it increased with regeneration time (1-14 days). The capacity achieved in the column tests during 24 hours of bioregeneration was 107 mg SO42-/g after the first regeneration cycle. During the bioregeneration, sulfate was mainly reduced by the sulfate-reducing bacteria (approx. 60%), but part of it was only detached from the resins (approx. 30%). The resin-attached sulfate was most likely replaced with ions present in the liquid sulfate-reducing bacterial culture (e.g., HCO3-, HS-, and Cl-). During the subsequent exhaustion cycles with the bioregenerated resin, the pH of the treated sodium sulfate solution increased from the original 6.7 ± 0.5 to around 9. The study showed that biological sulfate reduction could be used for sulfate removal in combination with ion exchange, and that the exhausted ion exchange resins could be regenerated using a liquid sulfate-reducing bacterial culture without producing any brine.
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Affiliation(s)
- Hanna Virpiranta
- University of Oulu, Chemical Process Engineering, PO Box 4300, 90014 Oulu, Finland.
| | - Tiina Leiviskä
- University of Oulu, Chemical Process Engineering, PO Box 4300, 90014 Oulu, Finland
| | - Sanna Taskila
- University of Oulu, Chemical Process Engineering, PO Box 4300, 90014 Oulu, Finland
| | - Juha Tanskanen
- University of Oulu, Chemical Process Engineering, PO Box 4300, 90014 Oulu, Finland
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3
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Tran D, Weidhaas J. Ion exchange for effective separation of 3-nitro-1,2,4-triazol-5-one (NTO) from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129215. [PMID: 35739737 DOI: 10.1016/j.jhazmat.2022.129215] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/06/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The explosive 3-nitro-1,2,4-triazol-5-one (NTO) presents a physiochemical challenge for treatment of munitions wastewater. Leveraging NTO's ionic character in neutral pH wastewater allows for expanded treatment options. Four commercial drinking water anion exchange resins specific for NO3- and ClO4- were evaluated for NTO adsorption extent, adsorption kinetics, and regeneration potential. Batch studies demonstrated NTO adsorption to all resins tested (max 690 mg NTO/g resin) and that resins were regenerable with 6% NaCl. Adsorption capacities (88-99%) and desorption efficiencies (80-85%) of NTO from the resins remained stable over three loading cycles. Perchlorate selective resins adsorbed more NTO, with larger desorption efficiencies, than nitrate selective resins. Kinetic experiments demonstrated that equilibrium adsorption between NTO and resins occurs within 120 min of exposure, following the pseudo second-order model (K2 range 9.8 × 10-5 to 15 × 10-5 g resin/mg NTO/min). Intraparticle diffusion modeling suggested that boundary-layer diffusion was the predominant sorption mechanism in NTO adsorption to the resins compared to intraparticle diffusion. In synthetic wastewater mixtures of NTO, 2-4-dinitroanisole (DNAN), nitroguanidine (NQ), and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), only NTO was exchanged to any great extent. This work suggests that perchlorate anion exchange resins may be a viable segregation technology for NTO from munitions wastewater as compared to activated carbon.
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Affiliation(s)
- Dana Tran
- University of Utah, 110 Central Campus Drive, Suite 2000, Salt Lake City, UT 84122, USA
| | - Jennifer Weidhaas
- University of Utah, 110 Central Campus Drive, Suite 2000, Salt Lake City, UT 84122, USA.
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4
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Edgar M, Boyer TH. Removal of natural organic matter by ion exchange: Comparing regenerated and non-regenerated columns. WATER RESEARCH 2021; 189:116661. [PMID: 33254071 DOI: 10.1016/j.watres.2020.116661] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/23/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Dissolved organic matter (DOM) in water has adverse impacts on the water treatment process and is effectively removed by ion exchange (IEX). Some researchers have proposed the term biological ion exchange (BIEX) for the process of continuous DOM removal by ion exchange without the need for chemical regeneration that results in brine waste. Surface water with moderate dissolved organic carbon (DOC) concentrations (4-6 mg/L) and high sulfate concentrations (80 - 120 mg/L) was fed to two regenerated and two non-regenerated columns for 12,500 bed volumes (9 months) with the goal of investigating the effects of chemical and possibly biological regeneration on long-term IEX operation. Chemically regenerated columns achieved between 60 and 80% DOC removal for the entirety of the experiment, while non-regenerated columns achieved steady DOC removal of ~50%. Inorganic ion analysis showed that biological activity had minimal impact on DOC removal, and the main mechanism of removal was secondary IEX between sulfate (SO42-) and fractions of DOC with high affinities for ion exchange. Fluorescence and specific UV absorbance at 254 nm (SUVA 254) data showed that fractions of DOC with higher SUVA 254 values (terrestrial-like fractions) were better removed by secondary IEX than those with lower SUVA 254 values (aquatic/microbial-like fractions). Scanning electron microscopy showed that biofilms on non-regenerated resins covered 5-15% of the resin surface and are composed of numerous species of bacteria with varying functions, with some protozoa present.
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Affiliation(s)
- Michael Edgar
- School of Sustainable Engineering and the Built Environment (SSEBE) Arizona State University, PO Box 873005, Tempe, AZ 85287-3005, USA.
| | - Treavor H Boyer
- School of Sustainable Engineering and the Built Environment (SSEBE) Arizona State University, PO Box 873005, Tempe, AZ 85287-3005, USA
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5
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Duan S, Tong T, Zheng S, Zhang X, Li S. Achieving low-cost, highly selective nitrate removal with standard anion exchange resin by tuning recycled brine composition. WATER RESEARCH 2020; 173:115571. [PMID: 32035280 DOI: 10.1016/j.watres.2020.115571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
This study demonstrated the presence of a critical equivalent ratio of the competing anion (i.e., sulfate and bicarbonate) to chloride ion in recycled brine to achieve highly-selective nitrate removal from nitrate-rich groundwater in the standard-anion exchange resin (AER) (i.e., with trimethylamine functional groups) column process. With increasing bicarbonate (or sulfate):chloride equivalent ratio in brine used to circularly activate/regenerate the standard-AER column, considerable bicarbonate (sulfate) removal and dumping were observed. The critical bicarbonate (sulfate):chloride equivalent ratio of 2:5 (8:1) in brine effectively achieved zero net bicarbonate (sulfate) removal (<5%) from feedwater during long-term exhaustion-regeneration cyclic operation. The feed rate (6-18 BV/h) played a key role in determining the critical sulfate:chloride equivalent ratio in brine, while the feed sulfate concentration (145-345 mg/L) slightly changed the critical sulfate:chloride equivalent ratio. The use of optimized ternary brine (with a sulfate:chloride:bicarbonate equivalent ratio of 42:5:2) stably achieved long-term highly-selective nitrate removal from groundwater in the standard-AER column process with brine electrochemical treatment. The possible mechanism for nitrate selectivity included the modification of the sulfate: and bicarbonate:chloride equivalent ratios in the standard-AER column by the optimized brine in circular activation/regeneration mode; this changed the column elution and breakthrough curves, inhibited the competition of sulfate and bicarbonate for ion exchange sites during exhaustion according to the separation factor, and finally achieved selective nitrate removal from feedwater.
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Affiliation(s)
- Shoupeng Duan
- School of Environment, MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
| | - Tiezheng Tong
- Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO, 80523, United States
| | - Shaokui Zheng
- School of Environment, MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China.
| | - Xueyu Zhang
- School of Environment, MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
| | - Shida Li
- School of Environment, MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
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6
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Shang Y, Wang Z, Xu X, Gao B, Ren Z. Bio-reduction of free and laden perchlorate by the pure and mixed perchlorate reducing bacteria: Considering the pH and coexisting nitrate. CHEMOSPHERE 2018; 205:475-483. [PMID: 29705638 DOI: 10.1016/j.chemosphere.2018.04.132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 04/10/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
Pure bacteria cell (Azospira sp. KJ) and mixed perchlorate reducing bacteria (MPRB) were employed for decomposing the free perchlorate in water as well as the laden perchlorate on surface of quaternary ammonium wheat residuals (QAWR). Results indicated that perchlorate was decomposed by the Azospira sp. KJ prior to nitrate while MPRB was just the reverse. Bio-reduction of laden perchlorate by Azospira sp. KJ was optimal at pH 8.0. In contrast, bio-reduction of laden perchlorate by MPRB was optimal at pH 7.0. Generally, the rate of perchlorate reduction was controlled by the enzyme activity of PRB. In addition, perchlorate recovery (26.0 mg/g) onto bio-regenerated QAWR by MPRB was observed with a small decrease as compared with that (31.1 mg/g) by Azospira sp. KJ at first 48 h. Basically, this study is expected to offer some different ideas on bio-regeneration of perchlorate-saturated adsorbents using biological process, which may provide the economically alternative to conventional methods.
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Affiliation(s)
- Yanan Shang
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Ziyang Wang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, PR China
| | - Xing Xu
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
| | - Baoyu Gao
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Zhongfei Ren
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
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7
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Vega M, Nerenberg R, Vargas IT. Perchlorate contamination in Chile: Legacy, challenges, and potential solutions. ENVIRONMENTAL RESEARCH 2018; 164:316-326. [PMID: 29554623 DOI: 10.1016/j.envres.2018.02.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/21/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
This paper reviews the unique situation of perchlorate contamination in Chile, including its sources, presence in environmental media and in the human population, and possible steps to mitigate its health impacts. Perchlorate is a ubiquitous water contaminant that inhibits thyroid function. Standards for drinking water range from 2 to 18 µg L-1 in United States and Europe. A major natural source of perchlorate contamination is Chile saltpeter, found in the Atacama Desert. High concentrations of perchlorate have presumably existed in this region, in soils, sediments, surface waters and groundwaters, for millions of years. As a result of this presence, and the use of Chile saltpeter as a nitrogen fertilizer, perchlorate in Chile has been found at concentrations as high as 1480 µg L-1 in drinking water, 140 µg/kg-1 in fruits, and 30 µg L-1 in wine. Health studies in Chile have shown concentrations of 100 µg L-1 in breast milk and 20 µg L-1 in neonatal serum. It is important to acknowledge perchlorate as a potential health concern in Chile, and assess mitigation strategies. A more thorough survey of perchlorate in Chilean soils, sediments, surface waters, groundwaters, and food products can help better assess the risks and potentially develop standards. Also, perchlorate treatment technologies should be more closely assessed for relevance to Chile. The Atacama Desert is a unique biogeochemical environment, with millions of years of perchlorate exposure, which can be mined for novel perchlorate-reducing microorganisms, potentially leading to new biological treatment processes for perchlorate-containing waters, brines, and fertilizers.
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Affiliation(s)
- Marcela Vega
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, 156 Fitzpatrick Hall of Engineering, South Bend, IN 46556, United States; Centro de Desarrollo Urbano Sustentable (CEDEUS), Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Robert Nerenberg
- Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, 156 Fitzpatrick Hall of Engineering, South Bend, IN 46556, United States
| | - Ignacio T Vargas
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Centro de Desarrollo Urbano Sustentable (CEDEUS), Av. Vicuña Mackenna 4860, Macul, Santiago, Chile.
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8
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Leong KY, Loo SL, Bashir MJ, Oh WD, Rao PV, Lim JW. Bioregeneration of spent activated carbon: Review of key factors and recent mathematical models of kinetics. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.09.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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9
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Hutchison JM, Guest JS, Zilles JL. Evaluating the Development of Biocatalytic Technology for the Targeted Removal of Perchlorate from Drinking Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:7178-7186. [PMID: 28497961 DOI: 10.1021/acs.est.7b00831] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Removing micropollutants is challenging in part because of their toxicity at low concentrations. A biocatalytic approach could harness the high affinity of enzymes for their substrates to address this challenge. The potential of biocatalysis relative to mature (nonselective ion exchange, selective ion exchange, and whole-cell biological reduction) and emerging (catalysis) perchlorate-removal technologies was evaluated through a quantitative sustainable design framework, and research objectives were prioritized to advance economic and environmental sustainability. In its current undeveloped state, the biocatalytic technology was approximately 1 order of magnitude higher in cost and environmental impact than nonselective ion exchange. Biocatalyst production was highly correlated with cost and impact. Realistic improvement scenarios targeting biocatalyst yield, biocatalyst immobilization for reuse, and elimination of an electron shuttle could reduce total costs to $0.034 m-3 and global warming potential (GWP) to 0.051 kg CO2 eq m-3: roughly 6.5% of cost and 7.3% of GWP of the background from drinking water treatment and competitive with the best performing technology, selective ion exchange. With less stringent perchlorate regulatory limits, ion exchange technologies had increased cost and impact, in contrast to biocatalytic and catalytic technologies. Targeted advances in biocatalysis could provide affordable and sustainable treatment options to protect the public from micropollutants.
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Affiliation(s)
- Justin M Hutchison
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Jeremy S Guest
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Julie L Zilles
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
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10
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Wu M, Wang S, Gao N, Zhu Y, Li L, Niu M, Li S. Removal of perchlorate from water using a biofilm magnetic ion exchange resin: feasibility and effects of dissolved oxygen, pH and competing ions. RSC Adv 2016. [DOI: 10.1039/c6ra10553j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A biofilm magnetic ion exchange (BMIEX) resin was obtained by mixing a magnetic ion exchange (MIEX) resin with perchlorate-acclimated cultures and was first proposed to remove perchlorate from water.
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Affiliation(s)
- Min Wu
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Shuaifeng Wang
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Yanping Zhu
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Lei Li
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Mingxing Niu
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
| | - Shuo Li
- State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai 200092
- China
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11
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Ebrahimi S, Roberts DJ. Mathematical modelling and reactor design for multi-cycle bioregeneration of nitrate exhausted ion exchange resin. WATER RESEARCH 2016; 88:766-776. [PMID: 26595098 DOI: 10.1016/j.watres.2015.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/01/2015] [Accepted: 11/02/2015] [Indexed: 06/05/2023]
Abstract
Nitrate contamination is one of the largest issues facing communities worldwide. One of the most common methods for nitrate removal from water is ion exchange using nitrate selective resin. Although these resins have a great capacity for nitrate removal, they are considered non regenerable. The sustainability of nitrate-contaminated water treatment processes can be achieved by regenerating the exhausted resin several times rather than replacing and incineration of exhausted resin. The use of multi-cycle exhaustion/bioregeneration of resin enclosed in a membrane has been shown to be an effective and innovative regeneration method. In this research, the mechanisms for bioregeneration of resin were studied and a mathematical model which incorporated physical desorption process with biological removal kinetics was developed. Regardless of the salt concentration of the solution, this specific resin is a pore-diffusion controlled process (XδD ¯CDr0(5+2α)<<1). Also, Thiele modulus was calculated to be between 4 and 12 depending on the temperature and salt concentration. High Thiele modulus (>3) shows that the bioregeneration process is controlled by reaction kinetics and is governed by biological removal of nitrate. The model was validated by comparison to experimental data; the average of R-squared values for cycle 1 to 5 of regeneration was 0.94 ± 0.06 which shows that the developed model predicted the experimental results very well. The model sensitivity for different parameters was evaluated and a model bioreactor design for bioregeneration of highly selective resins was also presented.
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Affiliation(s)
- Shelir Ebrahimi
- Biological Solutions Laboratory, School of Engineering, University of British Columbia, Kelowna V1V 1V7, BC, Canada
| | - Deborah J Roberts
- Biological Solutions Laboratory, School of Engineering, University of British Columbia, Kelowna V1V 1V7, BC, Canada.
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12
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Sharbatmaleki M, Unz RF, Batista JR. Potential mechanisms for bioregeneration of perchlorate-containing ion-exchange resin. WATER RESEARCH 2015; 75:1-10. [PMID: 25746957 DOI: 10.1016/j.watres.2015.02.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 02/06/2015] [Accepted: 02/16/2015] [Indexed: 06/04/2023]
Abstract
Ion-exchange (IX) is the most feasible technology for perchlorate removal from drinking water. Reuse of resins present challenges, however. Selective resins are non-regenerable, and are incinerated after one time use, while non-selective resins, when regenerable, produce a waste stream that contains high concentration of perchlorate that must be disposed of. A process to bioregenerate spent resin containing perchlorate with perchlorate-reducing bacteria (PRB) has been recently developed. In this research, potential mechanisms for bioregeneration of resin-attached perchlorate (RAP) were investigated. Batch bioregeneration experiments were performed using gel-type and macroporous-type resins. Various initial chloride concentrations and various resin bead sizes were used. The results of the bioregeneration experiments suggested that chloride, i.e. the product of perchlorate biodegradation, is more likely the desorbing agent of RAP; and increasing the concentration of chloride enhances the bioregeneration process. Both film and pore diffusion were found to be relevant with respect to the rate of perchlorate mass-transfer to the bulk liquid. Bioregeneration was found to be more effective for macroporous than for gel-type resins, especially in the case of macroporous resins with relatively small bead size in the presence of higher chloride concentration.
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Affiliation(s)
| | - Richard F Unz
- Department of Civil and Environmental Engineering, University of Nevada, Las Vegas, NV, USA
| | - Jacimaria R Batista
- Department of Civil and Environmental Engineering, University of Nevada, Las Vegas, NV, USA
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13
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Ebrahimi S, Roberts DJ. Bioregeneration of single use nitrate selective ion-exchange resin enclosed in a membrane: Kinetics of desorption. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.03.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Zhu Y, Gao N, Wang Q, Wei X. Adsorption of perchlorate from aqueous solutions by anion exchange resins: Effects of resin properties and solution chemistry. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.11.062] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Song W, Xu X, Tan X, Wang Y, Ling J, Gao B, Yue Q. Column adsorption of perchlorate by amine-crosslinked biopolymer based resin and its biological, chemical regeneration properties. Carbohydr Polym 2015; 115:432-8. [DOI: 10.1016/j.carbpol.2014.09.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 08/28/2014] [Accepted: 09/09/2014] [Indexed: 10/24/2022]
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16
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Ebrahimi S, Roberts DJ. Sustainable nitrate-contaminated water treatment using multi cycle ion-exchange/bioregeneration of nitrate selective resin. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:539-544. [PMID: 24095993 DOI: 10.1016/j.jhazmat.2013.09.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 09/11/2013] [Accepted: 09/12/2013] [Indexed: 06/02/2023]
Abstract
The sustainability of ion-exchange treatment processes using high capacity single use resins to remove nitrate from contaminated drinking water can be achieved by regenerating the exhausted resin and reusing it multiple times. In this study, multi cycle loading and bioregeneration of tributylamine strong base anion (SBA) exchange resin was studied. After each cycle of exhaustion, biological regeneration of the resin was performed using a salt-tolerant, nitrate-perchlorate-reducing culture for 48 h. The resin was enclosed in a membrane to avoid direct contact of the resin with the culture. The results show that the culture was capable of regenerating the resin and allowing the resin to be used in multiple cycles. The concentrations of nitrate in the samples reached a peak in first 0.5-1h after placing the resin in medium because of desorption of nitrate from resin with desorption rate of 0.099 ± 0.003 hr(-1). After this time, since microorganisms began to degrade the nitrate in the aqueous phase, the nitrate concentration was generally non-detectable after 10h. The average of calculated specific degradation rate of nitrate was -0.015 mg NO3(-)/mg VSS h. Applying 6 cycles of resin exhaustion/regeneration shows resin can be used for 4 cycles without a loss of capacity, after 6 cycles only 6% of the capacity was lost. This is the first published research to examine the direct regeneration of a resin enclosed in a membrane, to allow reuse without any disinfection or cleaning procedures.
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Affiliation(s)
- Shelir Ebrahimi
- School of Engineering, University of British Columbia, EME 3218, 3333 University Way, Kelowna, BC, Canada V1V 1V7.
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17
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Toh RH, Lim PE, Seng CE, Adnan R. Immobilized acclimated biomass-powdered activated carbon for the bioregeneration of granular activated carbon loaded with phenol and o-cresol. BIORESOURCE TECHNOLOGY 2013; 143:265-274. [PMID: 23796608 DOI: 10.1016/j.biortech.2013.05.126] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/30/2013] [Accepted: 05/31/2013] [Indexed: 06/02/2023]
Abstract
The objectives of the study are to use immobilized acclimated biomass and immobilized biomass-powdered activated carbon (PAC) as a novel approach in the bioregeneration of granular activated carbon (GAC) loaded with phenol and o-cresol, respectively, and to compare the efficiency and rate of the bioregeneration of the phenolic compound-loaded GAC using immobilized and suspended biomasses under varying GAC dosages. Bioregeneration of GAC loaded with phenol and o-cresol, respectively, was conducted in batch system using the sequential adsorption and biodegradation approach. The results showed that the bioregeneration efficiency of GAC loaded with phenol or o-cresol was basically the same irrespective of whether the immobilized or suspended biomass was used. Nonetheless, the duration for bioregeneration was longer under immobilized biomass. The beneficial effect of immobilized PAC-biomass for bioregeneration is the enhancement of the removal rate of the phenolic compounds via adsorption and the shortening of the bioregeneration duration.
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Affiliation(s)
- Run-Hong Toh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
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Ren J, Yang W, Hua M, Pan B, Zhang W. Bioregeneration of hyper-cross-linked polymeric resin preloaded with phenol. BIORESOURCE TECHNOLOGY 2013; 142:701-705. [PMID: 23727014 DOI: 10.1016/j.biortech.2013.05.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 05/07/2013] [Accepted: 05/07/2013] [Indexed: 06/02/2023]
Abstract
In this study, the preliminary feasibility of bio-regeneration of a hyper-cross-linked polymeric resin NDA-802 preloaded with phenol was investigated. As compared to the abiotic experiments, phenol preloaded with NDA-802 could be effectively desorbed and biodegraded, and the bioregenerated NDA-802 could be employed for multiple use. The concentration gradient hypothesis could interpret such bioregeneration process reasonably. A slight drop in adsorption capacity of NDA-802 after bioregeneration possibly resulted from the mesopore blockage by microbial metabolic by-products. In general, bioregeneration could serve as a potential choice for the exhausted hyper-cross-linked polymeric resin in wastewater treatment.
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Affiliation(s)
- Jie Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
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Al-Amrani WA, Lim PE, Seng CE, Ngah WSW. Bioregeneration of mono-amine modified silica and granular activated carbon loaded with Acid Orange 7 in batch system. BIORESOURCE TECHNOLOGY 2012; 118:633-637. [PMID: 22704829 DOI: 10.1016/j.biortech.2012.05.090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 05/16/2012] [Accepted: 05/19/2012] [Indexed: 06/01/2023]
Abstract
The objectives of this study were: (1) to investigate the role of mixed culture of biomass in the regeneration of mono-amine modified silica (MAMS) and granular activated carbon (GAC) loaded with Acid Orange 7 (AO7), (2) to quantify and compare the bioregeneration efficiencies of AO7-loaded MAMS and GAC using the sequential adsorption and biodegradation approach and (3) to evaluate the reusability of bioregenerated MAMS. The results show that considerably higher bioregeneration efficiency of AO7-loaded MAMS as compared to that of AO7-loaded GAC was achieved due to higher reversibility of adsorption of MAMS for AO7 and favorable pH factor resulting in more AO7 desorption. The progressive loss of adsorption capacity of MAMS for AO7 with multiple cycles of use suggests possible chemical and microbial fouling of the adsorption sites.
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