1
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Ferreira AR, Skjolding LM, Sanchez DF, Bernar Ntynez AG, Ivanova YD, Feilberg KL, Chhetri RK, Andersen HR. Offshore produced water treatment by a biofilm reactor on the seabed: The effect of temperature and matrix characteristics. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121391. [PMID: 38905793 DOI: 10.1016/j.jenvman.2024.121391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/08/2024] [Accepted: 06/03/2024] [Indexed: 06/23/2024]
Abstract
In many industrial processes a large amount of water with high salinity is co-produced whose treatment poses considerable challenges to the available technologies. The produced water (PW) from offshore operations is currently being discharged to sea without treatment for dissolved pollutants due to space limitations. A biofilter on the seabed adjacent to a production platform would negate all size restrictions, thus reducing the environmental impact of oil and gas production offshore. The moving bed biofilm reactor (MBBR) was investigated for PW treatment from different oilfields in the North Sea at 10 °C and 40 °C, corresponding to the sea and PW temperature, respectively. The six PW samples in study were characterized by high salinity and chemical oxygen demand with ecotoxic effects on marine algae S. pseudocostatum (0.4%
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Affiliation(s)
- Ana Rita Ferreira
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark.
| | - Lars Michael Skjolding
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark
| | - Diego Francisco Sanchez
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark
| | - Alexandros Georgios Bernar Ntynez
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark
| | - Yanina Dragomilova Ivanova
- Danish Offshore Technology Centre (DTU Offshore). Technical University of Denmark, Elektrovej 375, 2800, Lyngby, Denmark
| | - Karen Louise Feilberg
- Danish Offshore Technology Centre (DTU Offshore). Technical University of Denmark, Elektrovej 375, 2800, Lyngby, Denmark
| | - Ravi K Chhetri
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark
| | - Henrik R Andersen
- Department of Environmental and Resource Engineering (DTU Sustain). Water Technology & Processes. Technical University of Denmark, Bygningstorvet 115, 2800, Lyngby, Denmark
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2
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Azmoon P, Farhadian M, Pendashteh A, Navarchian AH. Synergistic effect of adsorption and photocatalytic degradation of oilfield-produced water by electrospun photocatalytic fibers of Polystyrene/Nanorod-Graphitic carbon nitride. J Environ Sci (China) 2024; 141:287-303. [PMID: 38408829 DOI: 10.1016/j.jes.2023.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 02/28/2024]
Abstract
Graphitic carbon nitride with nanorod structure (Nr-GCN) was synthesized using melamine as a precursor without any other reagents by hydrothermal pretreatment method. XRD, FTIR, SEM, N2 adsorption-desorption from BET, UV-Vis DRS spectroscopy, and photoluminescence were used to characterize the prepared samples. Also, the photoelectrochemical behavior of nanoparticles was studied by photocurrent transient response and cyclic voltammetry analysis. Polystyrene (PS) fibrous mat was fabricated by electrospinning technique and used as a support for the stabilization of the nanoparticles. The performance of the synthesized nanoparticles and photocatalytic fibers (PS/Nr-GCN) was evaluated in oilfield-produced water treatment under visible light irradiation. During this process, oil contaminants were adsorbed by hydrophobic polystyrene fibers and simultaneously degraded by Nr-GCN. The removal efficiency of chemical oxygen demand (COD) has been obtained 96.6% and 98.4% by Nr-GCN and PS/Nr-GCN, respectively, at the optimum conditions of pH 4, photocatalyst dosage 0.5 g/L, COD initial concentration 550 mg/L, and illumination time 150 min. The gas chromatography-mass spectroscopy analysis results showed 99.3% removal of total petroleum hydrocarbons using photocatalytic fibers of PS/Nr-GCN. The results demonstrated that the GCN has outstanding features like controllable morphology, visible-light-driven, and showing high potential in oily wastewater remediation. Moreover, the synergistic effect of adsorption and photocatalytic degradation is an effective technique in oilfield-produced water treatment.
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Affiliation(s)
- Parisa Azmoon
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
| | - Mehrdad Farhadian
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran.
| | - Alireza Pendashteh
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran; Department of Water and Environmental Engineering, Caspian Sea Basin Research Center, University of Guilan, Rasht, Iran
| | - Amir H Navarchian
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
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3
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Li X, Zhang Y, Wang Y, Zhu L, Liu Y, Wang L. AgIn 5S 8/g-C 3N 4 Composite Photocatalyst Coupled with Low-Temperature Plasma-Enhanced Degradation of Hydroxypropyl-Guar-Simulated Oilfield Wastewater. Molecules 2024; 29:2862. [PMID: 38930926 PMCID: PMC11206768 DOI: 10.3390/molecules29122862] [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: 05/13/2024] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
The effective treatment and recovery of fracturing wastewater has always been one of the difficult problems to be solved in oilfield wastewater treatment. Accordingly, in this paper, photocatalytic-coupled low-temperature plasma technology was used to degrade the simulated wastewater containing hydroxypropyl guar, the main component of fracturing fluid. Results indicated that hydroxypropyl-guar wastewater could be degraded to a certain extent by either photocatalytic technology or plasma technology; the chemical oxygen demand and viscosity of the treated wastewater under two single-technique optimal conditions were 781 mg·L-1, 0.79 mPa·s-1 and 1296 mg·L-1, 1.01 mPa·s-1, respectively. Furthermore, the effective coupling of AgIn5S8/gC3N4 photocatalysis and dielectric-barrier discharge-low-temperature plasma not only enhanced the degradation degree of hydroxypropyl guar but also improved its degradation efficiency. Under the optimal conditions of coupling treatment, the hydroxypropyl-guar wastewater achieved the effect of a single treatment within 6 min, and the chemical oxygen demand and viscosity of the treated wastewater reduced to below 490 mg·L-1 and 0.65 mPa·s-1, respectively. In the process of coupled treatment, the AgIn5S8/gC3N4 could directly absorb the light and strong electric field generated by the system discharge and play an important role in the photocatalytic degradation, thus effectively improving the energy utilization rate of the discharge system and enhancing the degradation efficiency of hydroxypropyl guar.
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Affiliation(s)
- Xiang Li
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Yuhang Zhang
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
| | - Yiling Wang
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
| | - Li Zhu
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
| | - Yuhang Liu
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
| | - Lingxing Wang
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China; (Y.Z.); (Y.W.); (L.Z.); (Y.L.); (L.W.)
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4
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Mazioti AA, Vyrides I. Treatment of high-strength saline bilge wastewater by four pilot-scale aerobic moving bed biofilm reactors and comparison of the microbial communities. ENVIRONMENTAL TECHNOLOGY 2024; 45:1066-1080. [PMID: 36315853 DOI: 10.1080/09593330.2022.2137436] [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: 06/17/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Four Pilot-scale Moving Bed Biofilm Reactors (MBBRs) were operated for the treatment of real, saline, bilge wastewater. The MBBRs were connected in pairs to create two system configurations with different filling ratios (20%, 40%) and were operated in parallel. The inflow organic loading rate (OLR) varied from 3.6 ± 0.2 to 7.8 ± 0.6 g COD L-1 d-1, salinity was >15 ppt and three hydraulic residence times (HRTs) were tested 48, 30 and 24 h. In both systems, the first-stage bioreactors (R1 and R3) eliminated the higher part of the organic load (57%-65%). The second-stage bioreactors (R2 and R4) removed an additional fraction (18%-31%) of the organic load received by the effluent of R1 and R3, respectively. The microbial communities of the influent wastewater, suspended, and attached biomass were determined using 16S rRNA gene amplicon sequencing analysis. The evolution of the microbial communities was investigated and compared over the different operational phases. The microbial communities of the biofilm presented higher diversity and greater stability in composition over time, while the suspended biomass exhibited intense and rapid changes in the dominance of genera. Proteobacteria, Bacteroidetes and Firmicutes were highly present in the biofilm. The genera Celeribacter, Novispirillum, Roseovarius (class: Alphaproteobacteria) and Formosa (class: Flavobacteriia) were highly present during all operational phases. Principal Component Analysis (PCA) was used to identify similarities between samples, exhibiting high relation of samples according to the series of the bioreactor (1st, 2nd).
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Affiliation(s)
- Aikaterini A Mazioti
- Department of Chemical Engineering, Cyprus University of Technology, Limassol, Cyprus
- Department of Marine Sciences, University of the Aegean, Mytilene, Greece
| | - Ioannis Vyrides
- Department of Chemical Engineering, Cyprus University of Technology, Limassol, Cyprus
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5
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Gholami M, Souraki BA, Shomali A, Pendashteh A. Saline wastewater treatment by bioelectrochemical process (BEC) based on Al-electrocoagulation and halophilic bacteria: optimization using ANN with new approach. ENVIRONMENTAL TECHNOLOGY 2023:1-21. [PMID: 37640518 DOI: 10.1080/09593330.2023.2253365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/17/2023] [Indexed: 08/31/2023]
Abstract
ABSTRACTIn the present study, a bioelectrochemical reactor (BEC) was utilized to treat two types of real saline produced water (PW). BEC was designed based on the combination of electrocoagulation (EC) process with halophilic microorganisms, and it was assessed in terms of biodegradation of hydrocarbons. The effects of various operating parameters including the current density, electrical contact time (On/Off), hydraulic retention time (HRT), and total dissolved solids (TDS) at different levels on the chemical oxygen demand (COD) removal efficiency, settleability, and performance of isolated halophilic microorganisms were examined. Additionally, a novel neural network (ANN) approach modelling using adaptive factors was used to predict and optimize the effects and interactions between operating parameters during BEC process by predicting complicated mechanisms and variations associated with microorganisms. In addition, a new algorithm was developed for the sensitivity analysis to achieve the optimum operating conditions and obtain maximum efficiency in COD removal, sludge volume index (SVI), mixed liquor suspended solids (MLSS), and specific electrical energy consumption (SEEC), simultaneously. BEC was found to be significantly more effective at removing most hydrocarbons, particularly pristine and phytane. In addition, the results showed a significant improvement in settling ability of the biological flocs with average SVI of 91.5 mL/g and a size of 178.25 μm using BEC. Based on estimated operating costs and energy consumption, BEC was more cost-effective and efficient than other bioelectrochemical systems.
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Affiliation(s)
- Moeen Gholami
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran
- Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand
| | - Behrooz Abbasi Souraki
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran
| | - Abbas Shomali
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran
| | - Alireza Pendashteh
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran
- Department of Water Engineering and Environment, The Caspian Sea Basin Research Center, University of Guilan, Rasht, Iran
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6
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Xu L, Yang Y, Su J, He C, Shi J, Yan H, Wei H. Simultaneous removal of nitrate, lead, and tetracycline by a fixed-biofilm reactor assembled with kapok fiber and sponge iron: Comparative analysis of operating conditions and biotic community. ENVIRONMENTAL RESEARCH 2023; 219:115163. [PMID: 36580984 DOI: 10.1016/j.envres.2022.115163] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
In recent years, under the condition of lack of carbon source, the presence of composite micro-pollutants make the removal of nitrate seriously damaged, and to find a suitable way to solve this problem is imminent. A fixed-biofilm carrier modified by mixing sponge iron (SI) and kapok fiber (KF) combined with strain Zoogloea sp. FY6 was constructed in this study to get a fixed-biofilm reactor with merit denitrification performance. By adjusting the operation parameters, it can be concluded that when the carbon to nitrogen (C/N) ratio was 1.5, the hydraulic retention time (HRT) was 6.0 h, and the pH was 6.0, the nitrate removal efficiency (NRE) of the fixed-biofilm reactor was up to 95.4% (2.95 mg L-1 h-1). In addition, the fixed-biofilm reactor constructed in this study can remove lead (Pb2+) and tetracycline (TC) excellently in the presence of SI and Zoogloea sp. FY6, and the denitrification performance can still maintain a high level under the influence of different concentrations of Pb2+ and TC. Furthermore, the addition of SI not only removes the compound pollutants, but also protects the toxicity of the pollutant inflow in the bioreactor, and the metabolic process of microorganisms in the bioreactor also removes some of the compound pollutants. The high-throughput data showed the abundance of strain Zoogloea sp. FY6 was still the highest value under the influence of various pollutants, and the metagenomic prediction showed that the fixed-biofilm reactor had perfect denitrification process and iron redox cycle benefits. This study provides a valuable reference for sustainable utilization of natural biological resources and reduction of material costs in wastewater treatment plants (WWTPs).
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Affiliation(s)
- Liang Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Yuzhu Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Chong He
- School of Water Resource and Environmental Engineering, East China University of Technology, Nanchang, 330013, China; Shanghai Baoye Metallurgical Engineering Co., Ltd, Baoshan District, Shanghai, China
| | - Jun Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Huan Yan
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Hao Wei
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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7
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Yan H, Huang M, Wang J, Geng H, Zhang X, Qiu Z, Dai Y, Han Z, Xu Y, Meng L, Zhao L, Tucker ME, Zhao H. Difference in calcium ion precipitation between free and immobilized Halovibrio mesolongii HMY2. J Environ Sci (China) 2022; 122:184-200. [PMID: 35717084 DOI: 10.1016/j.jes.2022.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 06/15/2023]
Abstract
Biomineralization has become a research focus in wastewater treatment due to its much lower costs compared to traditional methods. However, the low sodium chloride (NaCl)-tolerance of bacteria limits applications to only water with low NaCl concentrations. Here, calcium ions in hypersaline wastewater (10% NaCl) were precipitated by free and immobilized Halovibrio mesolongii HMY2 bacteria and the differences between them were determined. The results show that calcium ions can be transformed into several types of calcium carbonate with a range of morphologies, abundant organic functional groups (C-H, C-O-C, C=O, etc), protein secondary structures (β-sheet, α-helix, 310 helix, and β-turn), P=O and S-H indicated by P2p and S2p, and more negative δ13CPDB (‰) values (-16.8‰ to -18.4‰). The optimal conditions for the immobilized bacteria were determined by doing experiments with six factors and five levels and using response surface method. Under the action of two groups of immobilized bacteria prepared under the optimal conditions, by the 10th day, Ca2+ ion precipitation ratios had increased to 79%-89% and 80%-88% with changes in magnesium ion cencentrations. Magnesium ions can significantly inhibit the calcium ion precipitation, and this inhibitory effect can be decreased under the action of immobilized bacteria. Minerals induced by immobilized bacteria always aggregated together, had higher contents of Mg, P, and S, lower stable carbon isotope values and less well-developed protein secondary structures. This study demonstrates an economic and eco-friendly method for recycling calcium ions in hypersaline wastewater, providing an easy step in the process of desalination.
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Affiliation(s)
- Huaxiao Yan
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Meiyu Huang
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Jihan Wang
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Heding Geng
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiyu Zhang
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Ziyang Qiu
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yongliang Dai
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zuozhen Han
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Center for Isotope Geochemistry and Geochronology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Yudong Xu
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Long Meng
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Lanmei Zhao
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Maurice E Tucker
- School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK; Cabot Institute, University of Bristol, Cantock's Close, Bristol BS8 1UJ, UK
| | - Hui Zhao
- College of Chemical and Biological Engineering, College of Safety and Environmental Engineering, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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8
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Ganesan S, Limphattharachai S, Chawengkijwanich C, Liu Y, Janjaroen D. Influence of salinity on biofilm formation and COD removal efficiency in anaerobic moving bed biofilm reactors. CHEMOSPHERE 2022; 304:135229. [PMID: 35688188 DOI: 10.1016/j.chemosphere.2022.135229] [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: 01/10/2022] [Revised: 05/15/2022] [Accepted: 06/02/2022] [Indexed: 05/12/2023]
Abstract
Anaerobic digestion is widely used for wastewater treatment, but this approach often relies on microbial communities that are adversely affected by high-salinity conditions. This study investigated the applicability of an anaerobic moving bed biofilm reactor (AMBBR) to treating high-salinity wastewater. The removal performance and microbial community were examined under salinity conditions of 1000-3000 mg/L, and a soluble chemical oxygen demand (sCOD) removal efficiency of up to 8% ± 2.74% was achieved at high-salinity. Scanning electron microscopy showed that microorganisms successfully attached onto the polyvinyl alcohol gel carrier, and the extracellular polymeric substances on the biofilm increased at higher salt concentrations. The AMBBR also maintained traditionally accepted levels of total alkalinity and volatile fatty acids for stable wastewater processing under these operating conditions. High-throughput sequencing indicated that Desulfomicrobium and three methanogenic groups were the dominant contributors to sCOD removal. Overall, the results showed that the AMBBR can successfully treat fish factory wastewater under varying salinity conditions.
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Affiliation(s)
- Sunantha Ganesan
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Supanun Limphattharachai
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | | | - Yuanyuan Liu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China.
| | - Dao Janjaroen
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand; Research Network of NANOTEC-CU on Environment, Bangkok, 10330, Thailand; Research Unit Control of Emerging Micropollutants in Environment, Chulalongkorn University, Bangkok, Thailand.
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9
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Zeng F, Zhu Y, Zhang D, Zhao Z, Li Q, Ma P, Zhang G, Wang Y, Wu S, Guo S, Sun G. Metagenomic analysis of the soil microbial composition and salt tolerance mechanism in Yuncheng Salt Lake, Shanxi Province. Front Microbiol 2022; 13:1004556. [PMID: 36225369 PMCID: PMC9549588 DOI: 10.3389/fmicb.2022.1004556] [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: 07/27/2022] [Accepted: 09/08/2020] [Indexed: 11/13/2022] Open
Abstract
The soil in Yuncheng Salt Lake has serious salinization and the biogeographic environment affects the composition and distribution of special halophilic and salt-tolerant microbial communities in this area. Therefore, this study collected soils at distances of 15, 30, and 45 m from the Salt Lake and used non-saline soil (60 m) as a control to explore the microbial composition and salt tolerance mechanisms using metagenomics technology. The results showed that the dominant species and abundance of salt-tolerant microorganisms changed gradually with distance from Salt Lake. The salt-tolerant microorganisms can increase the expression of the Na+/H+ antiporter by upregulating the Na+/H+ antiporter subunit mnhA-G to respond to salt stress, simultaneously upregulating the genes in the betaine/proline transport system to promote the conversion of choline into betaine, while also upregulating the trehalose/maltose transport system encode genes to promote the synthesis of trehalose to resist a high salt environment.
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Affiliation(s)
- Feifeng Zeng
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yonghong Zhu
- Cotton Research Institute, Shanxi Agricultural University, Shanxi, China
| | - Dongling Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zengqiang Zhao
- Xinjiang Academy of Agricultural and Reclamation, Xinjiang, China
| | - Quansheng Li
- Xinjiang Academy of Agricultural and Reclamation, Xinjiang, China
| | - Panpan Ma
- Xinjiang Academy of Agricultural and Reclamation, Xinjiang, China
| | - Guoli Zhang
- Xinjiang Academy of Agricultural and Reclamation, Xinjiang, China
| | - Yuan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shenjie Wu
- Cotton Research Institute, Shanxi Agricultural University, Shanxi, China
| | - Sandui Guo
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guoqing Sun
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Guoqing Sun,
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10
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Singh A, Srivastava A, Saidulu D, Gupta AK. Advancements of sequencing batch reactor for industrial wastewater treatment: Major focus on modifications, critical operational parameters, and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115305. [PMID: 35642808 DOI: 10.1016/j.jenvman.2022.115305] [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: 02/23/2022] [Revised: 04/24/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Industrial wastewater discharge has increased manifolds over the last few decades. Efficient industrial wastewater treatment is mandatory to meet stringent discharge regulations. Biological treatment systems, such as the sequencing batch reactor (SBR) are generally employed for domestic wastewater treatment. However, low infrastructure and energy requirements, as well as low footprint, make SBR a prominent technique to treat industrial wastewater. In the present review, the feasibility of SBR to treat wastewater generated from industries, such as textile, pulp and paper, pharmaceutical, tannery, etc., has been discussed. The factors affecting the treatment efficacy of the SBR in terms of organics and nutrient removal have also been investigated. It has been observed that the SBR system is effective for industrial wastewater treatment as it is easy to operate, resistant to shock loads, and can retain high biomass concentrations. The modifications to the conventional SBR, such as sludge granulation, the addition of bio-film carriers, and the incorporation of adsorbents, salt-tolerant microbes, and coagulants have been discussed. Further, various novel combinations of SBR with the other advanced treatment technologies, such as Fenton, membrane-based process, and electrochemical process have shown enhanced removal of various conventional and recalcitrant pollutants. The current review also accentuates the sustainability aspects of SBR technology to treat industrial wastewater which may be beneficial for researchers and engineers working in this field.
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Affiliation(s)
- Adarsh Singh
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Ashish Srivastava
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Duduku Saidulu
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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11
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Bianco F, Race M, Papirio S, Oleszczuk P, Esposito G. Coupling of desorption of phenanthrene from marine sediments and biodegradation of the sediment washing solution in a novel biochar immobilized-cell reactor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119621. [PMID: 35709914 DOI: 10.1016/j.envpol.2022.119621] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/03/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
The recurrent dredging of marine sediments needs the use of ex-situ technologies such as sediment washing (SW) to effectively remove polycyclic aromatic hydrocarbons. Notwithstanding, the large volumes of generated spent SW effluents require adequate treatment by employing highly-efficient, inexpensive and environmentally-friendly solutions. This study proposes the phenanthrene (PHE) desorption from sediments using Tween® 80 (TW80) as extracting agent and the treatment of the resulting spent SW solution in a biochar (BC) immobilized-cell bioreactor. The SW process reached the highest PHE removal of about 91% using a surfactant solution containing 10,800 mg L-1 of TW80. The generated amount of spent PHE-polluted SW solution can be controlled by keeping a solid to liquid ratio of 1:4. A PHE degradation of up to 96% was subsequently achieved after 43 days of continuous reactor operation, aerobically treating the TW80 solution in the BC immobilized-cell bioreactor with a hydraulic retention time of 3.5 days. Brevundimonas, Chryseobacterium, Dysgonomonas, Nubsella, and both uncultured Weeksellaceae and Xanthobacteraceae genera were mainly involved in PHE biodegradation. A rough economic study showed a total cost of 342.60 € ton-1 of sediment, including the SW operations, TW80 and BC supply and the biological treatment of the SW solution.
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Affiliation(s)
- Francesco Bianco
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy.
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Patryk Oleszczuk
- Department of Radiochemistry and Environmental Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20031, Lublin, Poland
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
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12
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Hanvajanawong K, Suyamud B, Suwannasilp BB, Lohwacharin J, Visvanathan C. Unravelling capability of two-stage thermophilic anaerobic membrane bioreactors for high organic loading wastewater: Effect of support media addition and irreversible fouling. BIORESOURCE TECHNOLOGY 2022; 348:126725. [PMID: 35131463 DOI: 10.1016/j.biortech.2022.126725] [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: 11/29/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
This study investigated the effects of adding polyvinyl alcohol (PVA) beads on the performance of methanogenic reactors and the fouling behavior of a two-stage thermophilic anaerobic membrane bioreactor (ThAnMBR) for treating wastewater at a feed chemical oxygen demand (COD) of 10 g/L. The PVA-added methanogenic reactor exhibited stable operation performance and offered a relatively low volatile fatty acid concentration effluent with a higher COD removal than the system without PVA addition. The predominant microbial communities in both methanogenic reactors were similar and were assigned to the genus Methanosaeta, followed by Clostridia, which was the predominant genus in the hydrolytic reactor. Ultrafiltration in the PVA-added system offered higher effluent quality and lower fouling resistance. The system was able to operate with hydraulically removable fouling, without any chemical cleaning requirements; however, an elevated flux caused the system to suffer from hydraulically irreversible fouling. PVA beads exhibit their structural stability over long-term operation.
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Affiliation(s)
- K Hanvajanawong
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - B Suyamud
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - B B Suwannasilp
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Research Network NANOTEC - CU on Environment, Department of Environmental Engineering, Chulalongkorn University, Thailand
| | - J Lohwacharin
- Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Research Network NANOTEC - CU on Environment, Department of Environmental Engineering, Chulalongkorn University, Thailand; Professor Aroon Sorathesn Center of Excellence in Environmental Engineering, Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
| | - C Visvanathan
- School of Environment, Resources and Development, Asian Institute of Technology, Pathumthani, Thailand
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13
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Immobilization Techniques on Bioprocesses: Current Applications Regarding Enzymes, Microorganisms, and Essential Oils. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02780-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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14
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Deng L, Guo W, Ngo HH, Zhang X, Chen C, Chen Z, Cheng D, Ni SQ, Wang Q. Recent advances in attached growth membrane bioreactor systems for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:152123. [PMID: 34864031 DOI: 10.1016/j.scitotenv.2021.152123] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/28/2021] [Accepted: 11/28/2021] [Indexed: 06/13/2023]
Abstract
To tackle membrane fouling and limited removals of pollutants (nutrients and emerging pollutants) that hinder the wide applications of membrane bioreactor (MBR), attached growth MBR (AGMBR) combining MBR and attached growth process has been developed. This review comprehensively presents the up-to-date developments of media used in both aerobic and anaerobic AGMBRs for treating wastewaters containing conventional and emerging pollutants. It also elaborates the properties of different media, characteristics of attached biomass, and their contributions to AGMBR performance. Conventional media, such as biological activated carbon and polymeric carriers, induce formation of aerobic, anoxic and/or anaerobic microenvironment, increase specific surface area or porous space for biomass retention, improve microbial activities, and enrich diverse microorganisms, thereby enhancing pollutants removal. Meanwhile, new media (i.e. biochar, bioaugmented carriers with selected strain/mixed cultures) do not only eliminate conventional pollutants (i.e. high concentration of nitrogen, etc.), but also effectively remove emerging pollutants (i.e. micropollutants, nonylphenol, adsorbable organic halogens, etc.) by forming thick and dense biofilm, creating anoxic/anaerobic microenvironments inside the media, enriching special functional microorganisms and increasing activity of microorganisms. Additionally, media can improve sludge characteristics (i.e. less extracellular polymeric substances and soluble microbial products, larger floc size, better sludge settleability, etc.), alleviating membrane fouling. Future studies need to focus on the development and applications of more new functional media in removing wider spectrum of emerging pollutants and enhancing biogas generation, as well as scale-up of lab-scale AGMBRs to pilot or full-scale AGMBRs.
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Affiliation(s)
- Lijuan Deng
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia; Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, University of Technology Sydney and Tianjin Chengjian University,.
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia; Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, University of Technology Sydney and Tianjin Chengjian University,.
| | - Xinbo Zhang
- Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, University of Technology Sydney and Tianjin Chengjian University,; Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China
| | - Cheng Chen
- Infinite Water Holdings Pty Ltd., Unit 17/809 Botany Road, Rosebery, Sydney, NSW 2018, Australia
| | - Zhuo Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Dongle Cheng
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Shou-Qing Ni
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Quan Wang
- Department of Environment Science & Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
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Shitu A, Liu G, Zhang Y, Ye Z, Zhao J, Zhu S, Liu D. Enhancement of mariculture wastewater treatment using moving bed biofilm reactors filled with modified biocarriers: Characterisation, process performance and microbial community evaluation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 291:112724. [PMID: 33962286 DOI: 10.1016/j.jenvman.2021.112724] [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: 02/22/2021] [Revised: 04/10/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
This research investigated two proposed modified biofilm carriers' performances in treating recirculating aquaculture systems (RAS) wastewater under different salinities (12‰, 26‰, and 35‰) for about 92 days. Three moving bed biofilm reactors (MBBRs; R1, R2, and R3) were filled with unmodified novel sponge biocarriers (SB) served as a control, modified novel SB with ferrous oxalate (C2FeO4@SB), and modified novel SB with combined ferrous oxalate and activated carbon (C2FeO4-AC@SB), respectively. Under the highest saline condition, a significantly higher ammonia removal efficiency of 98.86 ± 0.7% (p ˃ 0.05) was obtained in R3, whereas R2 and R1 yielded 95.18 ± 2.8% and 91.66 ± 1.5%, respectively. Microbial analysis showed that Vibrio, Ruegeria, Formosa, Thalassospira, and Denitromonas were predominant genera, strictly halophilic heterotrophic nitrifying bacteria involved in nitrogen removal. In conclusion, the synergistic effects of novel sponge, C2FeO4 and AC accelerated biofilm formations and stability, subsequently enhanced the removal of ammonia from the mariculture RAS wastewater by the C2FeO4-AC@SB carriers in R3.
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Affiliation(s)
- Abubakar Shitu
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China; Department of Agricultural and Environmental Engineering, Faculty of Engineering, Bayero University, Kano, Nigeria
| | - Gang Liu
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China
| | - Yadong Zhang
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China
| | - Zhangying Ye
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China
| | - Jian Zhao
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China
| | - Songming Zhu
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China.
| | - Dezhao Liu
- Institute of Agricultural Bio-Environmental Engineering, College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou, 310058, China
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16
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Xu L, Su J, Huang T, Li G, Ali A, Shi J. Simultaneous removal of nitrate and diethyl phthalate using a novel sponge-based biocarrier combined modified walnut shell biochar with Fe 3O 4 in the immobilized bioreactor. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125578. [PMID: 34030419 DOI: 10.1016/j.jhazmat.2021.125578] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/26/2021] [Accepted: 03/01/2021] [Indexed: 05/17/2023]
Abstract
A novel biological carrier combining sponge and modified walnut shell biochar with Fe3O4 (MWSB@Fe3O4) was fabricated to achieve simultaneous removal of nitrate and diethyl phthalate (DEP). The optimal reaction conditions of the immobilized bioreactor were: carbon to nitrogen (C/N) ratio of 1.5, Fe2+ concentration of 20 mg L-1, and hydraulic retention time (HRT) of 8 h. Under the optimal conditions and DEP concentration of 800 μg L-1, the highest removal efficiency of DEP and nitrate in the immobilized bioreactor with the novel biological carrier were 67.87% and 83.97% (68.43 μg L-1 h-1 and 1.71 mg L-1 h-1), respectively. Scanning electron microscopy (SEM) showed that the novel biological carrier in this study carried more bio-sediments which is closely related to the denitrification efficiency. The gas chromatography (GC) data showed that the nitrogen production of the immobilized bioreactor (99.85%) was higher than that of another experimental group (97.84%). Fluorescence excitation-emission matrix (EEM) and Fourier transform infrared spectrometer (FTIR) indicated the immobilized bioreactor emerged more extracellular polymeric substances (EPS) which was related to favourable biological stability under the DEP environment. Moreover, according to high-throughput sequencing data, the Zoogloea sp. L2 responsible for iron-reduction and denitrification was the main strain in this immobilized bioreactor.
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Affiliation(s)
- Liang Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; State Key Laboratory of Green Building in West China, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Tingling Huang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Guoqing Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Jun Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
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17
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Nie H, Nie M, Diwu Z, Wang L, Yan H, Bai X. Immobilization of Rhodococcus qingshengii strain FF on the surface of polyethylene and its adsorption and biodegradation of mimic produced water. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124075. [PMID: 33265063 DOI: 10.1016/j.jhazmat.2020.124075] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/06/2020] [Accepted: 09/21/2020] [Indexed: 06/12/2023]
Abstract
Low pH and high salinity characteristic of produced water (PW) posed a big challenge for the direct biological treatment. The immobilization of R. qingshengii strain FF, which degraded petroleum effectively under low pH, and application of immobilized R. qingshengii strain FF in treating mimic PW was studied in this work. The immobilization of R. qingshengii strain FF on the surface of polyethylene foam (PEF), one type of waste packaging materials, was optimized using the response surface methodology. Under optimum conditions, cell density of R. qingshengii strain FF immobilized on the surface of PEF reached 388 mg (cells)/g(PEF). In addition, a few factors, including hydraulic retention time (HRT), pH and salinity, were studied for treating mimic PW using immobilized R. qingshengii strain FF. The result of this study demonstrated that TPH degradation efficiency of PW by immobilized R. qingshengii strain FF reached above 90% when HRT was longer than 8 h. Weak acid and high salinity conditions only moderately decreased TPH. Asphalt, alkanes and aromatic hydrocarbon contained in petroleum can be degraded to some extent. These results indicated that immobilized R. qingshengii strain FF can be used as a highly efficient strain which could be used in biological treatment of real PW.
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Affiliation(s)
- Hongyun Nie
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China
| | - Maiqian Nie
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China.
| | - Zhenjun Diwu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China.
| | - Lei Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China
| | - Han Yan
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China
| | - Xuerui Bai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China
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