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Najim AA, Ismail ZZ, Hummadi KK. Immobilization of mixed bacteria by novel biocarriers extracted from Cress and Chia seeds for biotreatment of anionic surfactant (SDS)-bearing real wastewaters. Prep Biochem Biotechnol 2022:1-10. [PMID: 36332156 DOI: 10.1080/10826068.2022.2140354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Selection of biocarrier type is an essential element for successful bacterial cells immobilization. The present investigation aimed to evaluate a novel application of Cress and Chia seeds as biocarriers for immobilization of mixed bacterial cells. Being an environmentally friendly, non-polluting, inexpensive, and non-toxic substances makes them promising biocarriers. On the other hand, there is an increasing concern about contamination by surfactants, sodium dodecyl sulfate (SDS) is among the most commonly used surfactant. The Cress and Chia seeds were cross-linked with PVA to prepare two types of beads; CrE-PVA and ChE-PVA, respectively. The beads were utilized for the SDS biodegradation in four kinds of actual SDS-bearing wastewaters originated from; carwash garage (CWW), laundry facility (LWW), and household detergent industry (HWW), in addition to domestic wastewater (DWW). The results revealed that maximum efficiencies of SDS elimination in DWW, LWW, HWW, and CWW were 98.12, 94.32, 93.04, and 99.08%, respectively, using CrE-PVA and 99.04, 94.96, 94.71, and 99.27%, respectively using ChE-PVA. Finally, both types of beads were recycled for five times without losing their stability and efficiency for SDS biodegradation. Four kinetic models were adopted which were Blackman, Monod, Haldane, and Teissier. Results revealed that Teissier model well fitted the experimental data.
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Affiliation(s)
- Aya A. Najim
- Department of Environmental Engineering, University of Baghdad, Baghdad, Iraq
| | - Zainab Z. Ismail
- Department of Environmental Engineering, University of Baghdad, Baghdad, Iraq
| | - Khalid K. Hummadi
- Department of Environmental Engineering, University of Baghdad, Baghdad, Iraq
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Najim AA, Ismail ZZ, Hummadi KK. Biodegradation potential of sodium dodecyl sulphate (SDS) by mixed cells in domestic and non-domestic actual wastewaters: Experimental and kinetic studies. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108374] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Hameed BB, Ismail ZZ. Biodegradation of reactive yellow dye using mixed cells immobilized in different biocarriers by sequential anaerobic/aerobic biotreatment: experimental and modelling study. ENVIRONMENTAL TECHNOLOGY 2021; 42:2991-3010. [PMID: 31973674 DOI: 10.1080/09593330.2020.1720306] [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: 07/13/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
In this study, the application of immobilized mixed cells for decolourization, biodegradation, and detoxification of reactive yellow dye (RY15) in textile wastewater was investigated via a sequential anaerobic-aerobic process in bench-scale bioreactors and lab-scale bioreactors as well. The mixed cultures were immobilized using three different biocarriers which were sodium alginate (SA), starch (St), and Gelatin (Ge), by the cross-linking with polyvinyl alcohol (PVA). Results revealed that the immobilized cultures had a potential degrading efficiency in the anaerobic and aerobic environment, targeting the initial structure and the formed compounds, respectively. Complete decolourization (100%) of RY15 was observed with a significant chemical oxygen demand (COD) removal, which enhanced the subsequent aerobic phase. Results demonstrated that COD removals were 92% ± 6.8, 96% ± 3.5, and 100%, using PVA-SA, PVA-St, and PVA-Ge at RY15 initial concentrations of 10 mg/L, respectively. The experimental work was extended to investigate the dye biodegradation in real textile wastewater using mixed cells in immobilized in PVA-SA. The Overloading rate (OLR) and Hydraulic retention time (HRT) of the aerobic bioreactor are 24.5 mg/L h and 41.37 h, respectively. The experimental profiles of RY concentration, COD reduction along with biomass growth, were in good agreement with the model predicted profiles. The effectiveness factors were 0.96 and 0.99 for the anaerobic and aerobic phases, respectively.
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Affiliation(s)
| | - Zainab Z Ismail
- Department of Environmental Engineering, University of Baghdad, Baghdad, Iraq
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Wu J, Wan J, Yu L, Zhang M, Ducoste JJ. The effect of activated sludge floc morphology on the measurement of biomass half-saturation coefficient: A 2D CFD biofilm model-based evaluation and experimental verification. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.107931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Impact of Dual Substrate Limitation on Biodenitrification Modeling in Porous Media. Processes (Basel) 2020. [DOI: 10.3390/pr8080890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this work, we consider a model of the biodenitrification process taking place in a spatially-distributed bioreactor, and we take into account the limitation of the kinetics by both the carbon source and the oxidized nitrogen. This model concerns a single type of bacteria growing on nitrate, which splits into adherent bacteria or free bacteria in the liquid, taking all interactions into account. The system obtained consists of four diffusion-convection-reaction equations for which we show the existence and uniqueness of a global solution. The system is approximated by a standard finite element method that satisfies an optimal a priori error estimate. We compare the results obtained for three forms of the growth function: single substrate limiting, “multiplicative” form, and “minimum” form. We highlight the limitation of the ‘ single substrate limiting model”, where the dependency of the bacterial growth on the nitrate is neglected, and find that the “minimum” model gives numerical results closer to the experimental results.
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Yu F, Munoz B, Bienkowski PR, Sayler GS. Bayesian estimation and sensitivity analysis of toluene and trichloroethylene biodegradation kinetic parameters. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:640-653. [PMID: 33016407 DOI: 10.1002/jeq2.20064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/30/2020] [Accepted: 02/11/2020] [Indexed: 06/11/2023]
Abstract
Parameter estimation is needed for process management, design, and reactor scaling when values from the literature vary tremendously or are unavailable. A Bayesian approach, implemented via Markov chain Monte Carlo (MCMC) simulations using SAS software, was used to estimate the kinetic parameters of toluene and trichloroethylene (TCE) biodegradation by the microorganism Pseudomonas putida F1 in batch cultures. The prediction capabilities of Bayesian estimation were illustrated by comparing predicted and observed data and reported in goodness-of-fit statistics. The sensitivity analysis showed that the parameters obtained using this approach were consistent under the designated toluene and TCE concentration range. Moreover, the impact of TCE on toluene degradation kinetics was numerically exhibited, verifying the fact that TCE was able to stimulate toluene degradation; hence, TCE's presence increased the apparent maximum toluene-specific rate. Various kinetic models were explored at different degrees of complexity. At a low TCE concentration range (e.g., <2 mg L-1 ), a simplified Michaelis-Menten model (i.e., substrate half-saturation parameters approximated the inhibition parameters) was adequate to describe the reaction kinetics. However, at a higher TCE range (e.g., 5 mg L-1 ), a full-scale Michaelis-Menten model was needed to discriminate among the inhibition parameters in the model. The results demonstrated that a Bayesian estimation method is particularly useful for determining complex bioreaction kinetic parameters in the presence of a small volume of experimental data.
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Affiliation(s)
- Feng Yu
- RTI International, 3040 Cornwallis Rd., Research Triangle Park, NC, 27709, USA
| | - Breda Munoz
- RTI International, 3040 Cornwallis Rd., Research Triangle Park, NC, 27709, USA
| | - Paul R Bienkowski
- Dep. of Chemical and Biomolecular Engineering (retired), Univ. of Tennessee, Knoxville, TN, 37996, USA
| | - Gary S Sayler
- Center for Environmental Biotechnology, Univ. of Tennessee, Knoxville, TN, 37996, USA
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Zhang B, Zhao J, Zuo J, Shi X, Gong J, Ren H. Realizing stable operation of anaerobic ammonia oxidation at low temperatures treating low strength synthetic wastewater. J Environ Sci (China) 2019; 75:193-200. [PMID: 30473284 DOI: 10.1016/j.jes.2018.03.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 06/09/2023]
Abstract
The low activity of Anammox bacteria at low temperatures and competition from nitrite oxidation bacteria (NOB) when treating low strength wastewater have been major bottlenecks in implementing Anammox in mainstream wastewater treatment. By intermittent high strength feeding (IHSF) and stepwise temperature reduction, stable operation of a granular Anammox reactor was realized at low temperatures (down to 15°C) for 28days when treating low strength synthetic wastewater. The nitrogen loading rate reached 1.23-1.34kgN/m3/day, and the total nitrogen removal rate reached 0.71-0.98kgN/m3/day. The IHSF enriched the Anammox sludge in high strength cycles and compensated for sludge loss in low strength cycles, and the high concentration of ammonium in high strength cycles inhibited NOB. The 16SrRNA gene sequencing results revealed that Candidatus Kuenenia was predominant in the reactor at low temperatures.
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Affiliation(s)
- Bowen Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Jian Zhao
- Beijing Enterprises Water Group Limited, Beijing 100102, China
| | - Jiane Zuo
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Xuchuan Shi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiayi Gong
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; SUEZ NWS Company Limited, Hong Kong 999077, China
| | - Haiteng Ren
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Zhang Q, Vlaeminck SE, DeBarbadillo C, Su C, Al-Omari A, Wett B, Pümpel T, Shaw A, Chandran K, Murthy S, De Clippeleir H. Supernatant organics from anaerobic digestion after thermal hydrolysis cause direct and/or diffusional activity loss for nitritation and anammox. WATER RESEARCH 2018; 143:270-281. [PMID: 29986237 DOI: 10.1016/j.watres.2018.06.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/05/2018] [Accepted: 06/16/2018] [Indexed: 06/08/2023]
Abstract
Treatment of sewage sludge with a thermal hydrolysis process (THP) followed by anaerobic digestion (AD) enables to boost biogas production and minimize residual sludge volumes. However, the reject water can cause inhibition to aerobic and anoxic ammonium-oxidizing bacteria (AerAOB & AnAOB), the two key microbial groups involved in the deammonification process. Firstly, a detailed investigation elucidated the impact of different organic fractions present in THP-AD return liquor on AerAOB and AnAOB activity. For AnAOB, soluble compounds linked to THP conditions and AD performance caused the main inhibition. Direct inhibition by dissolved organics was also observed for AerAOB, but could be overcome by treating the filtrate with extended aerobic or anaerobic incubation or with activated carbon. AerAOB additionally suffered from particulate and colloidal organics limiting the diffusion of substrates. This was resolved by improving the dewatering process through an optimized flocculant polymer dose and/or addition of coagulant polymer to better capture the large colloidal fraction, especially in case of unstable AD performance. Secondly, a new inhibition model for AerAOB included diffusion-limiting compounds based on the porter-equation, and achieved the best fit with the experimental data, highlighting that AerAOB were highly sensitive to large colloids. Overall, this paper for the first time provides separate identification of organic fractions within THP-AD filtrate causing differential types of inhibition. Moreover, it highlights the combined effect of the performance of THP, AD and dewatering on the downstream autotrophic nitrogen removal kinetics.
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Affiliation(s)
- Qi Zhang
- DC Water, 5000 Overlook Ave. SW, Washington, DC, 20032, USA; Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Gent, 9000, Belgium; Department of Earth and Environmental Engineering, Columbia University, 500 West 120th Street, New York, USA
| | - Siegfried E Vlaeminck
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Gent, 9000, Belgium; Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, Antwerpen, 2020, Belgium.
| | | | - Chunyang Su
- DC Water, 5000 Overlook Ave. SW, Washington, DC, 20032, USA
| | - Ahmed Al-Omari
- DC Water, 5000 Overlook Ave. SW, Washington, DC, 20032, USA
| | - Bernhard Wett
- ARAconsult, Unterbergerstr.1, Innsbruck, A-6020, Austria
| | - Thomas Pümpel
- Institut für Mikrobiologie, Technikerstr. 25, Innsbruck, A-6020, Austria
| | - Andrew Shaw
- Black & Veatch, 8400 Ward Parkway, Kansas City, MO, 64114, USA
| | - Kartik Chandran
- Department of Earth and Environmental Engineering, Columbia University, 500 West 120th Street, New York, USA
| | - Sudhir Murthy
- DC Water, 5000 Overlook Ave. SW, Washington, DC, 20032, USA
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