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Cui T, Wang P, Li J, Su Y, Liu N, Hong M. Effects of temperature, pH, and salinity on the growth kinetics of Pseudomonas sp. NB-1, a newly isolated cold-tolerant, alkali-resistant, and high-efficiency nitrobenzene-degrading bacterium. ENVIRONMENTAL TECHNOLOGY 2023; 44:2171-2183. [PMID: 35019831 DOI: 10.1080/09593330.2021.2024886] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 12/11/2021] [Indexed: 05/30/2023]
Abstract
ABSTRACTStrain NB-1, which can efficiently degrade nitrobenzene, was identified as Pseudomonas frederiksbergensis. NB-1 was resistant to cold and alkali with the widest temperature (4-35 °C) and pH (5-11) adaptive range, compared with other reported nitrobenzene-degrading microorganisms. Based on the Haldane-Andrews model, the real maximum specific growth rate μm', specific affinity aA, and inhibition coefficient Ki were used in response surface methodology (RSM) simultaneously for the first time to guide NB-1 to treat nitrobenzene wastewater. According to the RSM model, the environmental factors (temperature, pH, salinity) corresponding to the optimal values of μm', aA, and Ki were determined. By comparing the specific growth rates corresponding to the optimal values of μm', aA, and Ki, respectively, the optimum growth conditions of NB-1 were determined under different nitrobenzene concentrations. The study of μm', aA, and Ki by RSM provided a new approach for a more accurate optimization of biological wastewater treatment conditions.
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Affiliation(s)
- Tingchen Cui
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, People's Republic of China
| | - Peng Wang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, People's Republic of China
| | - Jialu Li
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, People's Republic of China
| | - YaoMing Su
- South China Institute of Environmental Sciences, MEP, People's Republic of China
| | - Na Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, People's Republic of China
- Institute of Groundwater and Earth Science, Jinan University, Guangzhou City, People's Republic of China
| | - Mei Hong
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, People's Republic of China
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Analysis of the Comparative Growth Kinetics of Paenarthrobacter ureafaciens YL1 in the Biodegradation of Sulfonamide Antibiotics Based on Substituent Structures and Substrate Toxicity. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8120742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The high consumption and emission of sulfonamide antibiotics (SAs) have a considerable threat to humans and ecosystems, so there is a need to develop safer and more effective methods than conventional strategies for the optimal removal of these compounds. In this study, four SAs with different substituents, sulfadiazine (SDZ), sulfamerazine (SMR), sulfamethoxazole (SMX), and sulfamethazine (SMZ) were removed by a pure culture of Paenarthrobacter ureafaciens YL1. The effect of the initial SAs concentration on the growth rate of strain YL1 was investigated. The results showed that the strain YL1 effectively removed various SAs in the concentration range of 0.05–2.4 mmol·L−1. The Haldane model was used to perform simulations of the experimental data, and the regression coefficient of the model indicated that the model had a good predictive ability. During SAs degradation, the maximum specific growth rate of strain YL1 was ranked as SMX > SDZ > SMR > SMZ with constants of 0.311, 0.304, 0.302, and 0.285 h−1, respectively. In addition, the biodegradation of sulfamethoxazole (SMX) with a five-membered substituent was the fastest, while the six-membered substituent of SMZ was the slowest based on the parameters of the kinetic equation. Also, density functional theory (DFT) calculations such as frontier molecular orbitals (FMOs), and molecular electrostatic potential map analysis were performed. It was evidenced that different substituents in SAs can affect the molecular orbital distribution and their stability, which led to the differences in the growth rate of strain YL1 and the degradation rate of SAs. Furthermore, the toxicity of P. ureafaciens is one of the crucial factors affecting the biodegradation rate: the more toxic the substrate and the degradation product are, the slower the microorganism grows. This study provides a theoretical basis for effective bioremediation using microorganisms in SAs-contaminated environments.
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Zhang C, Yan N, Zhu G, Chen F, Yu X, Huang Z, Zhang Y, Rittmann BE. Recovery of the nitrifying ability of acclimated biomass exposed to para-nitrophenol. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 781:146697. [PMID: 33794465 DOI: 10.1016/j.scitotenv.2021.146697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Para-nitrophenol (PNP) is often detected in industrial wastewater that is discharged into municipal wastewater treatment plants. Intermittent discharge of PNP into municipal treatment facilities puts their biological process at risk of inhibition, and the risk is especially great for nitrification. In this work, nitrifying biomass was acclimated to PNP. The acclimated biomass retained most of its ammonium-removal activity when it was exposed to PNP at up to 100 mg/L, while the normal (unacclimated) biomass had nearly complete inhibition. PNP was effectively biodegraded by the acclimated biomass, but the normal biomass had minimal PNP biodegradation. After PNP disappeared, the acclimated biomass recovered its ability for NH4+-N removals within one to two days, but the normal biomass did not fully recovery even after seven days. The acclimated biomass had superior ability to sustain nitrification due to its ability to biodegrade PNP and its selection of nitrifying bacteria more resistant to PNP. The PNP-acclimated community was enriched in genera that could have been active in the biodegradation of PNP, such as Chloroflexi. Although the abundance of well-known nitrifiers, Nitrosomonas and Nitrospira, decreased, Nitrosospira and other genera within the Proetobacteria phylum increased, presumably because they were more resistant to PNP.
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Affiliation(s)
- Chenyuan Zhang
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China
| | - Ning Yan
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China.
| | - Ge Zhu
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China
| | - Fu Chen
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China
| | - Xiyin Yu
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China
| | - Zhaowei Huang
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China
| | - Yongming Zhang
- Department of Environmental Engineering, School of Environmental and Geographical Science, Shanghai Normal University, Shanghai 200234, PR China; Yangtze Delta Wetland Ecosystem National Field Scientific Observation and Research Station, PR China.
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, AZ 85287-5701, USA
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Uniyal S, Sharma RK, Kondakal V. New insights into the biodegradation of chlorpyrifos by a novel bacterial consortium: Process optimization using general factorial experimental design. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111799. [PMID: 33360782 DOI: 10.1016/j.ecoenv.2020.111799] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 08/31/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Himalayan mountains are subjected to the intensive and unjudicial application of chlorpyrifos (CP) in agricultural practices; hence it has spurred concerns over food safety and environmental consequences. These low-temperature mountainous regions are foremost ecosystems, representing the large-scale distribution of cold trapped CP residues. A bacterial consortium ECO-M was formed by isolating the CP degrading bacterial strains viz Agrobacterium tumefaciens strain ECO1, Cellulosimicrobium funkei strain ECO2, Shinella zoogloeoides strain ECO3 and Bacillus aryabhattai strain ECO4. At an initial concentration of 50 mg L-1, consortium ECO-M degraded 100% of CP within 6 days. Emergence and subsequent degradation of the two metabolites, 3, 5, 6-trichloro-2-pyridinol (TCP) and 2-hydroxypyridine were confirmed by GC-MS analysis. A degradation pathway of CP by isolated strains has been proposed. A general factorial experimental design was effectuated to prognosticate the optimum biodegradation by manifesting the optimal biological and physicochemical factors. Fitness of the experimental design was affirmed experimentally by employing optimized factors i.e., temperature 30 °C, CP concentration 50 mg L-1 and an inoculum size of 10% (v/v). The model appropriacy and the rationality of the optimization procedure were appraised by installing an in-situ microcosms experiment using the real contaminated soil collected from the Himalayan mountain ecosystem. The augmentation culture seems to be effectively conspicuous in stimulating maximum degradation up to 94.3% in the CP contaminated soil.
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Affiliation(s)
- Shivani Uniyal
- Department of Botany, Banaras Hindu University, Varanasi 221005, India
| | | | - Vishnu Kondakal
- Department of Chemical Sciences, University of Huddersfield, UK
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Li M, Wei D, Yan L, Yang Q, Liu L, Xu W, Du B, Wang Q, Hou H. Aerobic biodegradation of p-nitrophenol in a nitrifying sludge bioreactor: System performance, sludge property and microbial community shift. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 265:110542. [PMID: 32275249 DOI: 10.1016/j.jenvman.2020.110542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/22/2020] [Accepted: 03/29/2020] [Indexed: 06/11/2023]
Abstract
The system performance, sludge property and microbial community shift were evaluated in a nitrifying sludge (NS) bioreactor for simultaneous treating p-Nitrophenol (PNP) and high ammonia wastewater. After long-term acclimation for 80 days, the removal efficiencies of PNP and NH4+-N reached to 99.9% and 99.5%, respectively. Meanwhile, the effluent PNP gradually decreased from 7.9 to 0.1 mg/L by acclimation of sludge. The particle size of NS increased from 115.2 μm to 226.3 μm accompanied by the decreased zeta potential as a self-protection strategy. The presence of PNP exposure altered the effluent soluble microbial products (SMP) fluorescent components and molecular composition. The increase in the relative abundance of Thauera, Nitrospiraceae and Nitrosomonas indicated the nitrification and denitrification capacities of NS increased, which maybe the PNP cometabolic biodegradation effect. Moreover, Ignavibacteria and Aeromonas were responsible as the dominant bacteria for degrading PNP in the nitrifying system.
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Affiliation(s)
- Mingrun Li
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Dong Wei
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China; Anhui Guozhen Environmental Protection Technology Joint Stock Co., Ltd, Hefei, 230088, PR China.
| | - Liangguo Yan
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Qingwei Yang
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Lulu Liu
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Weiying Xu
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Bin Du
- School of Resources and Environment, University of Jinan, Jinan, 250022, PR China
| | - Qian Wang
- College of Geography and Environment, Collaborative Innovation Center of Human-Nature and Green Development in the Universities of Shandong, Shandong Normal University, Jinan, 250014, PR China
| | - Hongxun Hou
- Anhui Guozhen Environmental Protection Technology Joint Stock Co., Ltd, Hefei, 230088, PR China
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Ye Z, Wang Q, Qiao J, Xu Y, Li G. In situ synthesis of sandwich MOFs on reduced graphene oxide for electrochemical sensing of dihydroxybenzene isomers. Analyst 2019; 144:2120-2129. [PMID: 30741272 DOI: 10.1039/c8an02307g] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel type of sandwich MOF was successfully synthesized on reduced graphene oxide (denoted as M@Pt@M-rGO) by an in situ synthesis method. The obtained M@Pt@M-rGO possesses excellent electrochemical properties. The surface morphology and structure of M@Pt@M-rGO were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), etc. By using M@Pt@M-rGO, a novel electrochemical sensor was constructed and successfully used for the simultaneous and sensitive detection of three isomers: hydroquinone (HQ), catechol (CT) and resorcinol (RS), with wider linear ranges of concentrations of 0.05-200 μM, 0.1-160 μM and 0.4-300 μM and lower detection limits of 0.015 μM, 0.032 μM and 0.133 μM (S/N = 3) for HQ, CT and RS, respectively. Besides, the proposed electrochemical sensor showed excellent anti-interference capability, high stability, good reproducibility, and satisfactory recovery for determination of isomers in river and lake water.
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Affiliation(s)
- Zhuo Ye
- The First Affiliated Hospital, Zhengzhou University, Zhengzhou, 450001, PR China
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7
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Bedade DK, Muley AB, Singhal RS. Magnetic cross-linked enzyme aggregates of acrylamidase from Cupriavidus oxalaticus ICTDB921 for biodegradation of acrylamide from industrial waste water. BIORESOURCE TECHNOLOGY 2019; 272:137-145. [PMID: 30336395 DOI: 10.1016/j.biortech.2018.10.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/03/2018] [Accepted: 10/04/2018] [Indexed: 06/08/2023]
Abstract
Acrylamidase from Cupriavidus oxalaticus ICTDB921 was immobilized on magnetic nanoparticles (MNPs) for degradation of acrylamide (a group 2A carcinogen and an environmental contaminant) from industrial waste water. Acrylamidase-MNPs were prepared (maximum recovery ∼94%) at optimized process parameters viz. 1.5:1 (v/v) of acetone: crude acrylamidase/5 mM of glutaraldehyde/90 min/1.5:1 of enzyme: MNP ratio. MNPs and acrylamidase-MNPs were characterized by particle size analysis, FTIR, XRD, SEM and vibrating sample magnetometer. Acrylamidase-MNPs showed a shift in optimum pH (8-8.5) and temperature (60-65 °C) with higher pH/thermal stability vis-à-vis free enzyme. A significant increase in kinetic constants, thermal inactivation constants and thermodynamic parameters were noted for acrylamidase-MNPs. A complete degradation of acrylamide ∼2100 mg/L was achieved in industrial waste water under optimized conditions for batch process and the kinetics was best represented by Haldane model. Acrylamidase-MNPs retained >80% of its initial activity after 4 cycles for both pure acrylamide and industrial waste water.
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Affiliation(s)
- Dattatray K Bedade
- Department of Food Engineering and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India
| | - Abhijeet B Muley
- Department of Food Engineering and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India
| | - Rekha S Singhal
- Department of Food Engineering and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India.
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Subashchandrabose SR, Venkateswarlu K, Krishnan K, Naidu R, Lockington R, Megharaj M. Rhodococcus wratislaviensis strain 9: An efficient p-nitrophenol degrader with a great potential for bioremediation. JOURNAL OF HAZARDOUS MATERIALS 2018; 347:176-183. [PMID: 29306813 DOI: 10.1016/j.jhazmat.2017.12.063] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/09/2017] [Accepted: 12/26/2017] [Indexed: 06/07/2023]
Abstract
A Gram-positive bacterium, Rhodococcus wratislaviensis strain 9, was isolated from groundwater contaminated with nitrophenolics and trichloroethene following enrichment culture technique. The cells of strain 9 grown on LB broth (uninduced) degraded 720 μM p-nitrophenol (PNP) within 12 h, and utilized as a source of carbon and energy. Orthogonal experimental design analysis to determine optimal conditions for biodegradation of PNP showed that pH had a significant positive effect (P ≤ .05) on bacterial degradation of PNP, while glucose, di- and tri-nitrophenols exhibited significant negative effect. Cell-free extracts obtained from PNP-grown culture that contained 20 μg mL-1 protein degraded 90% of 720 μM PNP within 5 h of incubation. Two-dimensional protein analysis revealed differential expression of the oxygenase component of PNP monooxygenase and an elongation factor Tu in PNP-grown cells, but not in those grown on glucose. The strain 9 remediated laboratory wastewater containing 900 μM PNP efficiently within 14 h, indicating its great potential in bioremediation of PNP-contaminated waters.
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Affiliation(s)
- Suresh R Subashchandrabose
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 18, Callaghan NSW 2308, Australia
| | - Kadiyala Venkateswarlu
- Formerly Professor of Microbiology, Sri Krishnadevaraya University, Anantapur 515055, India
| | - Kannan Krishnan
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 18, Callaghan NSW 2308, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 18, Callaghan NSW 2308, Australia
| | - Robin Lockington
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 18, Callaghan NSW 2308, Australia.
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Ordaz A, Sánchez M, Rivera R, Rojas R, Zepeda A. Respirometric response and microbial succession of nitrifying sludge to m-cresol pulses in a sequencing batch reactor. Biodegradation 2016; 28:81-94. [DOI: 10.1007/s10532-016-9779-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 11/26/2016] [Indexed: 10/20/2022]
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Zhao L, Bao M, Yan M, Lu J. Kinetics and thermodynamics of biodegradation of hydrolyzed polyacrylamide under anaerobic and aerobic conditions. BIORESOURCE TECHNOLOGY 2016; 216:95-104. [PMID: 27235971 DOI: 10.1016/j.biortech.2016.05.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/12/2016] [Accepted: 05/14/2016] [Indexed: 06/05/2023]
Abstract
Kinetics and thermodynamics of hydrolyzed polyacrylamide (HPAM) biodegradation in anaerobic and aerobic activated sludge biochemical treatment systems were explored to determine the maximum rate and feasibility of HPAM biodegradation. The optimal nutrient proportions for HPAM biodegradation were determined to be 0.08g·L(-1) C6H12O6, 1.00g·L(-1) NH4Cl, 0.36g·L(-1) NaH2PO4 and 3.00g·L(-1) K2HPO4 using response surface methodology (RSM). Based on the kinetics, the maximum HPAM biodegradation rates were 16.43385mg·L(-1)·d(-1) and 2.463mg·L(-1)·d(-1) in aerobic and anaerobic conditions, respectively. The activation energy (Ea) of the aerobic biodegradation was 48.9897kJ·mol(-1). Entropy changes (ΔS) of biochemical treatment system decreased from 216.21J·K(-1) to 2.39J·K(-1). Thermodynamic windows of opportunity for HPAM biodegradation were drawn. And it demonstrated HPAM was biodegraded into acetic acid and CO2 under laboratory conditions. Growth-process equations for functional bacteria anaerobically grown on polyacrylic acid were constructed and it confirmed electron equivalence between substrate and product.
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Affiliation(s)
- Lanmei Zhao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Mutai Bao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Miao Yan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Jinren Lu
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
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Wei H, Wu XS, Wen GY, Qiao Y. Imidazolium Ionic Liquid Functionalized Carbon Nanotubes for Improved Interfacial Charge Transfer and Simultaneous Determination of Dihydroxybenzene Isomers. Molecules 2016; 21:E617. [PMID: 27187344 PMCID: PMC6274356 DOI: 10.3390/molecules21050617] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/21/2016] [Accepted: 05/05/2016] [Indexed: 12/24/2022] Open
Abstract
In this paper; an imidazolium ionic liquid (IL) is used to functionalize multi-walled carbon nanotubes (MWNTs) by covalent bonding on the MWNT surface. The functionalization not only provides a hydrophilic surface for ion accessibility but also prevents the aggregation of MWNTs. The IL-functionalized MWNTs were then applied for the electrochemical determination of the dihydroxybenzene isomers hydroquinone (HQ); catechol (CC); and resorcinol (RC), exhibiting excellent recognition ability towards the three compounds. The linear calibration ranges for HQ; CC and RC are 0.9-150 μM; 0.9-150 μM and 1.9-145 μM and the detection limits are found to be 0.15 μM for HQ; 0.10 μM for CC and 0.38 μM for RC based on S/N of 3. The proposed electrochemical sensor was also found to be useful for the determination of the dihydroxybenzene isomers in Yellow River water with reliable recovery.
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Affiliation(s)
- Huan Wei
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, China.
- Faculty of Materials & Energy, Southwest University, Chongqing 400715, China.
| | - Xiao-Shuai Wu
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, China.
- Faculty of Materials & Energy, Southwest University, Chongqing 400715, China.
| | - Guo-Yun Wen
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, China.
- Faculty of Materials & Energy, Southwest University, Chongqing 400715, China.
| | - Yan Qiao
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, China.
- Faculty of Materials & Energy, Southwest University, Chongqing 400715, China.
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Lobo CC, Bertola NC, Contreras EM. INHIBITION KINETICS DURING THE OXIDATION OF BINARY MIXTURES OF PHENOL WITH CATECHOL, RESORCINOL AND HYDROQUINONE BY PHENOL ACCLIMATED ACTIVATED SLUDGE. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2016. [DOI: 10.1590/0104-6632.20160331s20150173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Robert-Peillard F, Chottier C, Coulomb B, Boudenne JL. Simple and ultrasensitive microplate method for spectrofluorimetric determination of trace resorcinol. Microchem J 2015. [DOI: 10.1016/j.microc.2015.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Morales-Mejía JC, Almanza R, Gutiérrez F. Solar Photocatalytic Oxidation of Hydroxy Phenols in a CPC Reactor with Thick TiO2 Films. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.10.214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Fernández I, Suárez-Ojeda ME, Pérez J, Carrera J. Aerobic biodegradation of a mixture of monosubstituted phenols in a sequencing batch reactor. JOURNAL OF HAZARDOUS MATERIALS 2013; 260:563-568. [PMID: 23811378 DOI: 10.1016/j.jhazmat.2013.05.052] [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: 02/11/2013] [Revised: 05/03/2013] [Accepted: 05/28/2013] [Indexed: 06/02/2023]
Abstract
A sequencing batch reactor (SBR) was inoculated with p-nitrophenol-degrading activated sludge to biodegrade a mixture of monosubstituted phenols: p-nitrophenol (PNP), PNP and o-cresol; and PNP, o-cresol and o-chlorophenol. Settling times were progressively decreased to promote biomass granulation. PNP was completely biodegraded. The PNP and o-cresol mixture was also biodegraded although some transitory accumulation of intermediates occurred (mainly hydroquinone and catechol). o-Chlorophenol was not biodegraded and resulted in inhibition of o-cresol and PNP biodegradation and complete failure of the SBR within a few days. The biomass had very good settling properties when a settling time of 1 min was applied: sludge volume index (SVI₅) below 50 mL g(-1), SVI₅/SVI₃₀ ratio of 1 and average particle size of 200 μm.
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Affiliation(s)
- Isaac Fernández
- Department of Chemical Engineering, Escola d'Enginyeria, Universitat Autònoma de Barcelona, Spain
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Sanchis S, Polo AM, Tobajas M, Rodriguez JJ, Mohedano AF. Strategies to evaluate biodegradability: application to chlorinated herbicides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 21:9445-52. [PMID: 24026209 DOI: 10.1007/s11356-013-2130-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/30/2013] [Indexed: 05/23/2023]
Abstract
The biodegradability of nitrochlorinated (diuron and atrazine) and chlorophenoxy herbicides (2,4-D and MCPA) has been studied through several bioassays using different testing times and biomass/substrate ratios. A fast biodegradability test using unacclimated activated sludge yielded no biodegradation of the herbicides in 24 h. The inherent biodegradability test gave degradation percentages of around 20-30% for the nitrochlorinated herbicides and almost complete removal of the chlorophenoxy compounds. Long-term biodegradability assays were performed using sequencing batch reactor (SBR) and sequencing batch membrane bioreactor (SB-MBR). Fixed concentrations of each herbicide below the corresponding EC50 value for activated sludge were used (30 mg L(-1) for diuron and atrazine and 50 mg L(-1) for 2,4-D and MCPA). No signs of herbicide degradation appeared before 35 days in the case of diuron and atrazine and 21 days for 2,4-D, whereas MCPA was partially degraded since the early stages. Around 25-36% degradation of the nitrochlorinated herbicides and 53-77% of the chlorophenoxy ones was achieved after 180 and 135 days, respectively, in SBR, whereas complete disappearance of 2,4-D was reached after 80 days in SB-MBR.
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Affiliation(s)
- S Sanchis
- Sección Departamental de Ingeniería Química, Universidad Autónoma de Madrid, Carretera Madrid-Colmenar Viejo Km 12.700, 28049, Madrid, Spain,
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Lobo CC, Bertola NC, Contreras EM. Stoichiometry and kinetic of the aerobic oxidation of phenolic compounds by activated sludge. BIORESOURCE TECHNOLOGY 2013; 136:58-65. [PMID: 23562772 DOI: 10.1016/j.biortech.2013.02.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 01/23/2013] [Accepted: 02/22/2013] [Indexed: 06/02/2023]
Abstract
The aerobic degradation of phenol (PH), catechol (CA), resorcinol (RE), pyrogallol (PY), and hydroquinone (HY) by phenol-acclimated activated sludge was investigated. A Haldane-type dependence of the respiration rate on PH, RE, and HY was observed; CA and PY exhibited a biphasic respiration pattern. According to the initial biodegradation rate, tested compounds were ordered as follows: CA>PH>>PYRE>HY. Also, they exhibited the following degree of toxicity to their own degradation: PY>>CARE>>PH>HY. Oxidation coefficients for PH, PY, RE, and HY were constant as a function of the consecutive additions of the compound. Conversely, an increase of YO/S from 1 to 1.5 molO2 molCA(-1) was observed during repeated additions of CA. The role of some enzymes involved in the aerobic degradation pathways of the tested compounds is discussed and related to the obtained results.
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Affiliation(s)
- Cintia C Lobo
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), CONICET, Fac. de Cs. Exactas, UNLP. 47 y 116 B1900AJJ, La Plata, Argentina.
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Martín-Hernández M, Suárez-Ojeda ME, Carrera J. Bioaugmentation for treating transient or continuous p-nitrophenol shock loads in an aerobic sequencing batch reactor. BIORESOURCE TECHNOLOGY 2012; 123:150-156. [PMID: 22940312 DOI: 10.1016/j.biortech.2012.07.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/03/2012] [Accepted: 07/07/2012] [Indexed: 06/01/2023]
Abstract
Bioaugmentation with an enriched microbial population was applied in an aerobic sequencing batch reactor (SBR) receiving transient or continuous shock loads of p-nitrophenol (PNP). The effect of the amount of biomass added for bioaugmentation was assessed by using two different dosages (2% or 5% w/w of the total biomass in the seeded SBR). In both cases, total PNP removal was achieved during the transient PNP shock load occurring after bioaugmentation. However, after a long PNP starvation period the only experiment still showing total PNP removal during a second PNP shock load was the one where a dosage of 5% w/w was applied. The results suggested that the dosage is a key factor for the implementation of a successful bioaugmentation strategy. In addition, the performance of a bioaugmented SBR receiving a continuous PNP shock load was enhanced when compared to a non-bioaugmented SBR.
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Affiliation(s)
- Mariángel Martín-Hernández
- Department of Chemical Engineering, Escola d'Enginyeria. Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
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