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Rudrappa M, Santosh Kumar M, Basavarajappa DS, Hiremath H, Hugar A, Almansour AI, Kantli GB, Nayaka S. Bioproduction, purification, partial characterization and phenol removal efficacy of tyrosinase enzyme from Streptomyces sp. strain MR28. Environ Res 2024; 251:118701. [PMID: 38508362 DOI: 10.1016/j.envres.2024.118701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/22/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
The study focused on the production of the tyrosinase enzyme from Streptomyces sp. MR28 and its potency in removal of phenol content from water using free and immobilized tyrosinase enzyme. The tyrosinase was produced by Streptomyces sp. MR28 in liquid tyrosine broth medium, and it was further purified to near its homogeneity by employing, precipitation, dialysis, and column chromatography. After the purification, 44.49% yield with a 4 fold purification was achieved. The characterization of the purified enzyme showed a single major peak on HPLC and a solitary band on SDS-PAGE. The purified tyrosinase enzyme was active at a pH of 7.0 and a temperature of 30 °C. Further immobilization of purified tyrosinase was performed using the sodium alginate entrapment method. The capacity of the purified tyrosinase to remove phenol in water was evaluated by spectrophotometric method. The free tyrosinase enzyme-treated solutions showed a gradual decrease in the concentration of phenol with increased incubation time at 30 °C and 40 °C, at 90 min of the incubation time, it showed maximum efficacy in removing phenol from the solution. At 50 °C and 60 °C, the free tyrosinase enzyme exhibited very less capacity to remove the phenol. The immobilized enzyme showed good capacity for the removal of phenol from the solutions; the concentration of phenol in the solution decreased with an increase in the incubation time. At temperatures of 40 °C and 50 °C, the immobilized tyrosinase enzyme beads showed significant removal of phenol from the solution, and at temperatures of 30 °C and 60 °C, they also exhibited good capacity for the removal of phenol. At the end of the 90 min incubation period, it exhibited good capability. The current study suggests using immobilized microbial tyrosinase enzyme can be used for the removal of phenol from the contaminated water in a greener manner.
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Affiliation(s)
- Muthuraj Rudrappa
- P.G. Department of Studies in Botany, Karnatak University, Dharwad, 580003, Karnataka, India.
| | - M Santosh Kumar
- Department of Studies in Biochemistry, Davangere University, Davangere, 577007, Karnataka, India
| | | | - Halaswamy Hiremath
- P.G. Department of Studies in Botany, Karnatak University, Dharwad, 580003, Karnataka, India
| | - Anil Hugar
- P.G. Department of Studies in Botany, Karnatak University, Dharwad, 580003, Karnataka, India
| | - Abdulrahman I Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Gireesh Babu Kantli
- Department of Life Sciences, PIAS, Parul University, Vadodara, 391760, Gujarat, India
| | - Sreenivasa Nayaka
- P.G. Department of Studies in Botany, Karnatak University, Dharwad, 580003, Karnataka, India.
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Yan C, Yu C, Ti X, Bao K, Wan J. Preparation of Mn-doped sludge biochar and its catalytic activity to persulfate for phenol removal. Environ Sci Pollut Res Int 2024; 31:18737-18749. [PMID: 38347365 DOI: 10.1007/s11356-024-32232-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 01/24/2024] [Indexed: 03/09/2024]
Abstract
In recent years, the increasing prevalence of phenolic pollutants emitted into the environment has posed severe hazards to ecosystems and living organisms. Consequently, there is an urgent need for a green and efficient method to address environmental pollution. This study utilized waste sludge as a precursor and employed a hydrothermal-calcination co-pyrolysis method to prepare manganese (Mn)-doped biochar composite material (Mn@SBC-HP). The material was used to activate peroxydisulfate (PDS) for the removal of phenol. The study investigated various factors (such as the type and amount of doping metal, pyrolysis temperature, catalyst dosage, PDS dosage, pH value, initial phenol concentration, inorganic anions, and salinity) affecting phenol removal and the mechanisms within the Mn@SBC-HP/PDS system. Results indicated that under optimal conditions, the Mn@SBC-HP/PDS system achieved 100% removal of 100 mg/L phenol within 180 min, with a TOC removal efficiency of 82.7%. Additionally, the phenol removal efficiency of the Mn@SBC-HP/PDS system remained above 90% over a wide pH range (3-9). Free radical quenching experiments and electron spin resonance (ESR) results suggested that hydroxyl radicals (·OH) and sulfate radicals (SO4-) yed a role in the removal of phenol through radical pathways, with singlet oxygen (1O2) being the dominant non-radical pathway. The phenol removal efficiency remained above 90%, demonstrating the excellent adaptability of the Mn@SBC-HP/PDS system under the interference of coexisting inorganic anions or increased salinity. This study proposes an innovative method for the resource utilization of waste, creating metal-biochar composite catalysts for the remediation of water environments. It provides a new approach for the efficiency of organic pollutants in water environments.
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Affiliation(s)
- Chongchong Yan
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Chao Yu
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Xueyi Ti
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Kai Bao
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jun Wan
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
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Eweida BY, Abd El-Aziz AM, El-Maghraby A, Serag E. Thermodynamic and kinetic analysis of the response surface method for phenol removal from aqueous solution using graphene oxide-polyacrylonitrile nanofiber mats. Sci Rep 2024; 14:3531. [PMID: 38347016 PMCID: PMC10861576 DOI: 10.1038/s41598-024-53572-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/02/2024] [Indexed: 02/15/2024] Open
Abstract
Phenolic compound even at low concentrations, are considered to be priority pollutants due to their significant toxicity. Electrospinning was used to create a polyacrylonitril (PAN) nanofiber, which was then impregnated with graphene oxide (GO). After a preliminary investigation into the electrospinning parameters (e.g., using various voltages and polymer concentrations), the electrospun nanofibres were tuned, this study evaluated the effectiveness of these materials in removing phenolic compounds from wastewater through adsorption. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the synthesized nanofiber mats. The scanning electron microscopy (SEM) analysis revealed that the structure of nanofiber mats was altered by the addition of graphene oxide (GO) in different ratios. Specifically, the surface of the fibres exhibited increased roughness, and the diameter of the fibres also experienced an increase. The average diameter of the fibres was measured to be (134.9 ± 21.43 nm) for the PAN/2.5% GO composite and (198 ± 33.94 nm) for the PAN/5% GO composite. FTIR spectra of the PAN/GO nanocomposites nanofiber displayed distinct peaks associated with graphene oxide (GO). These included a wide peak at 3400 cm-1, related to the presence of hydroxyl (O-H) groups, as well as peaks on 1600 as well as 1000 cm-1, which indicated the existence of epoxy groups. In this study response surface methodology (RSM) was implemented. To enhance the efficiency of removing substances, it is necessary to optimise parameters such as pH, contact time, and dosage of the adsorbent. The optimum pH for removing phenol via all nanofiber mats was determined to be 7, while at a dose of 2 mg dose adsorbents maximum removals for pure PAN, PAN/2.5 GO, and PAN/5 GO were 61.3941, 77.2118, and 92.76139%, respectively. All the adsorbents obey Langmuir isotherm model, and the empirical adsorption findings were fitted with the second-order model kinetically, also non-linear Elovich model. The maximal monolayer adsorption capacities for PAN, PAN/2.5 GO, and PAN/5 GO were found to be 57.4, 66.18, and 69.7 mg/g, respectively. Thermodynamic studies discovered that the adsorption of phenol on all adsorbents nanofiber mats was exothermic, the adsorption of phenol on nanofiber mats decreases as the temperature increases. All the adsorbents exhibit negative enthalpy and entropy. The PAN/GO composite's superior phenol removal suggested that it could be used as a latent adsorbent for efficient phenol removal from water and wastewater streams.
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Affiliation(s)
- Basant Yousri Eweida
- Modeling and Simulation Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications, Borg El-Arab, Alexandria, Egypt
| | - Asmaa M Abd El-Aziz
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Borg El-Arab, Alexandria, Egypt.
| | - Azza El-Maghraby
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Borg El-Arab, Alexandria, Egypt
| | - Eman Serag
- Marine Pollution Department, Environmental Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt.
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Liu Q, Li Y, Sun Y, Xie K, Zeng Q, Hao Y, Yang Q, Pu Y, Shi S, Gong Z. Deterioration of sludge characteristics and promotion of antibiotic resistance genes spread with the co-existing of polyvinylchloride microplastics and tetracycline in the sequencing batch reactor. Sci Total Environ 2024; 906:167544. [PMID: 37797771 DOI: 10.1016/j.scitotenv.2023.167544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/30/2023] [Indexed: 10/07/2023]
Abstract
With the continuous increase in microplastics (MPs) and tetracycline (TC) entering wastewater treatment plants (WWTPs) along with sewage, the co-existence of MPs and TC in the biological treatment of wastewater has attracted extensive attention. This study investigated the effect of 1 mg/L polyvinyl chloride (PVC) MPs and 100 ng/L TC co-existing on sequencing batch reactors (SBRs) (S2) treating phenol wastewater in contrast to the control with TC alone (S1). The phenol removal efficiency was significantly inhibited by the co-existence of PVC MPs and TC. Sludge characteristics were also distinctively influenced. The decreased zone sludge velocity (ZSV) and increased sludge volume index (SVI) indicated that the combined effect of PVC MPs and TC deteriorated sludge settleability, which had positive and negative linear correlations with extracellular polymeric substances (EPS) content and the protein (PN)/polysaccharide (PS) ratio, respectively. Moreover, the decreased and increased relative abundances of potential phenol-degraders and antibiotic resistance gene (ARG) carriers may elucidate the inhibition of phenol removal and promotion of ARGs propagation with the co-occurrence of PVC MPs and TC. In addition, the enhanced potential ARGs hosts, loss of the EPS protective effect, and increased membrane permeability induced by reactive oxygen species (ROS) jointly promoted ARGs dissemination in the co-existence of PVC MPs and TC. Notably, the co-occurrence of ARGs and mobile genetic element (MGEs) indicated that the co-existence of PVC MPs and TC promoted the spread of some transposase-associated ARGs mediated by horizontal gene transfer (HGT).
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Affiliation(s)
- Qiangwei Liu
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yuxin Li
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yanan Sun
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Kunpeng Xie
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Qianzhi Zeng
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yiming Hao
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Qing Yang
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yunhong Pu
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Shengnan Shi
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China..
| | - Zheng Gong
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China..
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Pei T, Shi F, Hou D, Yang F, Lu Y, Liu C, Lin X, Lu Y, Zheng Z, Zheng Y. Enhanced adsorption of phenol from aqueous solution by KOH combined Fe-Zn bimetallic oxide co-pyrolysis biochar: Fabrication, performance, and mechanism. Bioresour Technol 2023; 388:129746. [PMID: 37689119 DOI: 10.1016/j.biortech.2023.129746] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/14/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
In this study, impregnation combined with KOH activation with different mixing methods was used to prepare magnetic biochar. The effects of synthetic method on biochar physicochemical properties and adsorption performance were explored. The results showed that treatment of a Fe-Zn oxide with KOH activation provided excellent adsorption properties with adsorption capacity of 458.90 mg/g due to well-developed microporous structure and rich-in O-containing functional groups as well as exposed oxidizing functional groups (Fe2O3 and FeOOH). Langmuir-Freundlich and pseudo-second-order models accurately fit phenol adsorption. Neutral conditions (pH = 6) and lower ionic strengths were beneficial to phenol removal. Additionally, the predominant adsorption processes were physisorption and chemisorption. Correlation analyses and characterization data confirmed that pore filling, π-π interactions and surface complexation were the dominant driving forces for phenol adsorption. This research provides an environmentally friendly method for utilizing agricultural wastes for the removal of a variety of pollutions from aquatic environment.
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Affiliation(s)
- Tao Pei
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Feng Shi
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Fulin Yang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Yi Lu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Yanling Lu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Zhifeng Zheng
- Xiamen Key Laboratory for High-valued Conversion Technology of Agricultural Biomass (Xiamen University), Fujian Provincial Engineering and Research Center of Clean and High-valued Technologies for Biomass, College of Energy, Xiamen University, Xiamen 361102, PR China
| | - Yunwu Zheng
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China.
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Vanak Z, Asad S, Dastgheib SMM. Elucidated potential of immobilized Janibacter sp. for saline wastewater phenol removal. Appl Microbiol Biotechnol 2023; 107:6999-7011. [PMID: 37713116 DOI: 10.1007/s00253-023-12760-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/11/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
Phenolic compounds are commonly found in industrial effluents and can be hazardous to organisms even at low concentrations. Over the years, researchers have demonstrated that bioremediation is a cost-effective and environmentally friendly alternative to physicochemical approaches used to remove phenol. The aim of this study was to investigate the removal of phenol from saline wastewaters by a halotolerant strain of the genus Janibacter. For this purpose, bacterial cells were immobilized on different supports, from which mica and zeolite were ultimately chosen due to their higher removal efficiency. The wet weight of immobilized cells per 1 g of mica and zeolite was 0.51 and 0.48 g, respectively. Free cells consumed 100 mg/L of phenol in 88 h, while immobilized cells used it in 40 h. Immobilized cells revealed a higher thermostability and could operate over a wider pH range and salinity. Unlike free cells, immobilized cells could remove 700 mg/L of phenol and could be reused for at least nine cycles. Interestingly the phenol removal efficiency of zeolite-immobilized cells remained unchanged after 4 months of storage at 4 and - 20 °C, which could be of great advantage for industrial applications. Complete destruction of phenol was observed through the meta pathway comprising phenol hydroxylase and catechol 2,3-dioxygenase enzymes. KEY POINTS: • Mica- and zeolite-immobilized cells were able to consume high concentrations of phenol. • Cells immobilized on mica and zeolite had considerable operational and storage stability. • Immobilized cells could be a good candidate for phenol removal in saline environments.
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Affiliation(s)
- Zeynab Vanak
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Sedigheh Asad
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.
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Cui L, Wang P, Che H, Gao X, Chen J, Liu B, Ao Y. Environmental energy enhanced solar-driven evaporator with spontaneous internal convection for highly efficient water purification. Water Res 2023; 244:120514. [PMID: 37657314 DOI: 10.1016/j.watres.2023.120514] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/12/2023] [Accepted: 08/20/2023] [Indexed: 09/03/2023]
Abstract
Solar-driven interfacial evaporation for water purification is limited by the structural design of the solar evaporator and, more importantly, by the inability to separate the water from volatile organic compounds (VOCs) present in the water source. Here, we report a three-dimensional (3D) bifunctional evaporator based on N-doped carbon (CoNC/CF), which enables the separation of fresh water from VOCs by activating PMS during the evaporation process with a VOC removal rate of 99%. There is abundant van der Waals interaction between peroxymonosulfate (PMS) and CoNC/CF, and pyrrolic N is confirmed as the active site for binding phenol, thus contributing to the separation of phenol from water. With the advantageous features of sufficient light absorption, adequate water storage capacity, and spontaneous internal convection flow on its top surface, the 3D evaporator achieves a high evaporation rate under one sun (1 kW/m2) at 3.16 kg/m2/h. More notably, through careful structural design, additional energy from the environment and water can be utilized. With such a high evaporation rate and satisfactory purification performance, this work is expected to provide a promising platform for wastewater treatment.
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Affiliation(s)
- Lingfang Cui
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China
| | - Huinan Che
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China
| | - Xin Gao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China
| | - Juan Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China
| | - Bin Liu
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China
| | - Yanhui Ao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China.
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Hamid AA, Alam J, Shukla AK, Ali FAA, Alhoshan M. Sustainable removal of phenol from wastewater using a biopolymer hydrogel adsorbent comprising crosslinked chitosan and κ-carrageenan. Int J Biol Macromol 2023; 251:126340. [PMID: 37591437 DOI: 10.1016/j.ijbiomac.2023.126340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 07/27/2023] [Accepted: 08/12/2023] [Indexed: 08/19/2023]
Abstract
A biopolymer-based adsorbent comprising chitosan (CS) and κ-carrageenan (κ-Carr) was synthesised and evaluated to treat phenolic-contaminated water. The developed CS/κ-Carr hydrogel demonstrated excellent performance with a phenol adsorption uptake of 80 %. The morphologies of CS/κ-Carr hydrogels with different ratios of CS to κ-Carr ranging from 1:2 to 7:3 were characterised using scanning electron microscopy and atomic force microscopy; their chemical structures were investigated by spectral analyses using Fourier-transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry; their adsorption characteristics were determined using tests for swelling, chemical stability, hygroscopic moisture content, and hydrophilicity. Finally, a batch-type evaluation method demonstrated adsorption performance at 25 °C and pH 6.9. Adsorption isotherms and kinetic data were successfully obtained using the Freundlich and pseudo-second-order models, respectively. The results indicate that one-pot synthesis of an insoluble CS/κ-Carr hydrogel adsorbent exhibits considerable potential for the removal of phenol from aqueous solutions, providing an environmentally friendly technology enhancing the phenol adsorption performance of CS.
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Affiliation(s)
- Ali A Hamid
- Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11451, Saudi Arabia
| | - Javed Alam
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Arun Kumar Shukla
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Fekri Abdulraqeb Ahmed Ali
- Chemical Engineering Department, College of Engineering, Imam Mohammad Ibn Saud Islamic University, IMSIU, Riyadh 11432, Saudi Arabia
| | - Mansour Alhoshan
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11451, Saudi Arabia; K.A.CARE Energy Research and Innovation Centre, Riyadh 11454, Saudi Arabia.
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Zhang C, Wang Q, Qin R, Li Z, Wang Y, Ke Z, Ren G. Natural hematite as low-cost auxiliary material for improving soil remediation by in-situ microbial community. Environ Sci Pollut Res Int 2023; 30:84141-84151. [PMID: 37355514 DOI: 10.1007/s11356-023-28387-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/18/2023] [Indexed: 06/26/2023]
Abstract
Microbial-mineral interaction has a broad application prospect in the field of environmental remediation of organic pollutants. However, the disadvantages of long repair cycle and low repair rate limit its industrial application. In this study, natural hematite was used as an auxiliary material for soil remediation in a bio-electrochemical system. It was found that the power density of soil microbial fuel cell (SMFC) system composed of 2.0 mm hematite was 2.889 mW/m2, which is 2.7 times compared with the blank group (1.068 mW/m2) in the particle size optimization experiment. A similarly increased power density (1.068 to 2.467 mW/m2) was observed when the hematite content changed from 0 to 20% in the concentration optimization experiment. Under 20% and 2.0-mm hematite condition, the phenol removal rate was closed to 99% after 7 days, which is 1.9-folds compared with blank control (53%). These results suggest that addition of hematite enhances soil porosity and conductivity, and increases the number of electron acceptors in soil. These findings inspire that this economic and abundant natural mineral is expected to be a potential auxiliary material in the field of soil organic pollutant purification, and expand the understanding of interactions between hematite and microorganisms in nature.
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Affiliation(s)
- Chengbin Zhang
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Qijun Wang
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Runjie Qin
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Zitong Li
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Ye Wang
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Zunzhuang Ke
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Guiping Ren
- The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
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Viet NM, Mai Huong NT, Thu Hoai PT. Enhanced photocatalytic decomposition of phenol in wastewater by using La-TiO 2 nanocomposite. Chemosphere 2023; 313:137605. [PMID: 36563723 DOI: 10.1016/j.chemosphere.2022.137605] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/28/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
In this work, La-TiO2 nanocomposite was synthesized by loading lanthanum onto TiO2 and used for improving photodegradation of phenol in wastewater. The characterizations of La-TiO2 demonstrated that the loading of La onto TiO2 not only increased its adsorption light zone up to 470 nm but also decreased the band gap energy from 3.1 to 2.64 eV. Photoluminescence spectra of La-TiO2 confirmed the enhancing separation rate between electron and hole, leading to improve photodegradation efficiency of phenol. The removal rate of phenol was influenced by solution pH and alkaline conditions could bring better removal efficiency. In presence of light, the photodegradation efficiency of phenol by TiO2 was 64.1%, while it increased up to 93.4% by La-TiO2 photocatalyst. La-TiO2 nanocomposite was tested for five cycles and it showed only 13.8% dropping in the photodegradation efficiency of phenol. Besides, over 82% of phenol was removed from the wastewater sample by modified TiO2, demonstrating the potential of La-TiO2 photocatalyst for water pollution control.
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Affiliation(s)
- Nguyen Minh Viet
- VNU-Key Laboratory of Advanced Materials for Green Growth, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam
| | - Nguyen Thi Mai Huong
- Faculty of Food Science, University of Economics-Technology for Industries (UNETI), Hanoi, 11622, Viet Nam
| | - Pham Thi Thu Hoai
- Faculty of Food Science, University of Economics-Technology for Industries (UNETI), Hanoi, 11622, Viet Nam.
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11
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Mishra NS, Saravanan P. Z-scheme promoted heterojunction photocatalyst (Ag@AgVO 3 /rGO/CeVO 4) with improved interfacial charge transfer for efficient removal of aqueous organics irradiated under LED light. Chemosphere 2023; 310:136896. [PMID: 36257388 DOI: 10.1016/j.chemosphere.2022.136896] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 09/28/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
A facile hydrothermal route was followed to obtain a ternary composite Ag@AgVO3/rGO/CeVO4 with in-situ deposition of Ag nanoparticles over the AgVO3 nano-belts. The in-situ deposition was promoted and enhanced with the introduction of GO. The as-synthesized composite demonstrated remarkable visible light harvesting efficiency greater than 75% in the visible region. The charge separation and light harvesting properties were achieved through the Z-scheme mechanism mediated through rGO and the electron trapping/Schottky barrier effect from Ag nanoparticles. The reduction in the width of space charge region (∼2.5 times) and simultaneous increase in the density of charge carriers (2.3∗1018) promoted the LED irradiated photocatalytic performance. The decay time of the charge carriers were prolonged in the order of 4.46 s implying the enhancement in the charge separation. The studies were extended to charge trapping and the band structure modelling. The later emphasized on the prominence of Z-scheme mechanism with hole mediated degradation pathway. The LED photocatalysis demonstrated a removal efficiency of 87.20% for MB and 55.51% for phenol with a average AQE of 29.28% (MB) and 13.90% (phenol) for the ternary. The mineralization efficiency determined through TOC analysis was found to be 71.72%, and 66.43% for MB and phenol system respectively.
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Affiliation(s)
- Nirmalendu S Mishra
- Environmental Nanotechnology Laboratory, Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India
| | - Pichiah Saravanan
- Environmental Nanotechnology Laboratory, Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India.
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12
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Masud MAA, Kim DG, Shin WS. Degradation of phenol using Fe(II)-activated CaO 2: effect of ball-milled activated carbon (AC BM) addition. Environ Res 2022; 214:113882. [PMID: 35931187 DOI: 10.1016/j.envres.2022.113882] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/14/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
In-situ chemical oxidation (ISCO) based on peroxide activation is one of the most promising technologies for removing organic contaminants from natural groundwater (NGW). However, use of the most common form of hydrogen peroxide (H2O2) is limited owing to its significantly rapid reaction rate and heat generation. Therefore, in the present study, the activation of calcium peroxide (CaO2), a slow H2O2 releasing agent, by Fe(II) was proposed (CaO2/Fe(II)), and the phenol degradation mechanisms and feasibility of NGW remediation were investigated. The optimum molar ratio of [phenol]/[CaO2]/[Fe(II)] (phenol = 0.5 mM) was 1/10/10, resulting in 87.0-92.5% phenol removal within 120 min under a broad initial pH range of 3-9. HCO3-, PO43-, and humic acid significantly inhibited degradation, whereas the effects of Cl-, NO3-, and SO42- were negligible. Reactive oxygen species (ROS) were identified based on the results of phenol degradation in the presence of scavengers and electron spin resonance (ESR) spectroscopy, which demonstrated that 1O2 played the dominant role, supported by •OH, in CaO2/Fe(II). Phenol removal in NGW (67.81%) was less than that in distilled and deionized water (DIW, 92.5%) at a [phenol]/[CaO2]/[Fe(II)] ratio of 1/10/10. However, phenol removal was significantly improved (∼100%) by increasing the CaO2 and Fe(II) doses to 1/20/20-40. Furthermore, when 125-250 mg L-1 of ball-milled activated carbon (ACBM) was added (CaO2/Fe(II)-ACBM), phenol removal was enhanced from 67.81% to 90.94-100% in the NGW. CaO2/Fe(II)-ACBM exhibited higher total organic carbon (TOC) removal than CaO2/Fe(II). In addition, no notable by-products were detected using CaO2/Fe(II)-ACBM, whereas the polymerisation products of hydroxylated and/or ring-cleaved compounds, that is, aconitic acid, gallocatechin, and 10-hydroxyaloin, were found in the reaction with CaO2/Fe(II). These results strongly suggest that CaO2/Fe(II)-ACBM is highly promising for groundwater remediation, minimizing degradation byproducts and the adverse effects caused by the NGW components.
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Affiliation(s)
- Md Abdullah Al Masud
- School of Architecture, Civil, Environmental and Energy Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Do Gun Kim
- Department of Environmental Engineering, Sunchon National University, Suncheon, Jeollanam-do, 57922, Republic of Korea.
| | - Won Sik Shin
- School of Architecture, Civil, Environmental and Energy Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.
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Shi B, Zhang L, Sun H, Ren J, Wang H, Tang H, Bian Z. Efficient and recyclable Ni-Ce-Mn-N modified ordered mesoporous carbon electrode during electrocatalytic ozonation process for the degradation of simulated high-salt phenol wastewater. Chemosphere 2022; 304:135258. [PMID: 35679983 DOI: 10.1016/j.chemosphere.2022.135258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/23/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
In this study, an efficient and stable NiO/CeO2/MnO2-modified nitrogen-doped ordered mesoporous carbon (NOMC) particle electrode was developed, in which the metal oxides were mosaicked within the pore channels by one-pot skeleton hybridization, and the comodification of NiO/CeO2/MnO2/N was found to improve the electrocatalytic activity and stability of the particle electrode. The improved stability of the ordered mesoporous carbon towards pore collapse was applied to the degradation of simulated high-salt phenol wastewater by an electrocatalytic ozonation process using simple binder pelletization. The modified ordered mesoporous carbon shows a specific surface area of 269.7 m2 g-1 and a pore size of 3.17 nm, and SEM and TEM were used to show that the mesoporous structure is well maintained and the metal nanoparticles are well dispersed. The electrochemically active area of the Ni2%/Ce0.5%/Mn2.5%-NOMC particle electrode reaches 224.65 mF cm-2, which indicates that NiO improves the capacitance of the ordered mesoporous carbon and accelerates the electron transfer efficiency. Encouragingly, the phenol removal efficiency is found to reach up to 93.0% for 60 min over a wide range of pH values, with an initial phenol concentration of 150 mg L-1, low current (0.03 A) and fast reaction rate (0.0895 min-1), and the presence of CeO2 ameliorates the low activity of the particle electrode under acidic conditions. These results indicate that the presence of pyridine-N and β-MnO2 effectively mitigates carbon corrosion and improves electrode stability, as the accumulation of large amounts of ·OH at 20 min and the maintenance of a degradation efficiency of more than 90% after eight cycles provides a viable solution for the widespread practical application of ordered mesoporous carbon particle electrodes.
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Affiliation(s)
- Bingyu Shi
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Lu Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Haiying Sun
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Jianan Ren
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Hui Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China.
| | - Hanyu Tang
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China
| | - Zhaoyong Bian
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China.
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14
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Wang Y, Su J, Ali A, Chang Q, Bai Y, Gao Z. Enhanced nitrate, manganese, and phenol removal by polyvinyl alcohol/sodium alginate with biochar gel beads immobilized bioreactor: Performance, mechanism, and bacterial diversity. Bioresour Technol 2022; 348:126818. [PMID: 35139430 DOI: 10.1016/j.biortech.2022.126818] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/30/2022] [Accepted: 02/01/2022] [Indexed: 05/17/2023]
Abstract
Water pollutants, such as nitrate, heavy metals, and organics have attracted attention due to their harms to environmental and biological health. A novel polyvinyl alcohol/sodium alginate with biochar (PVA/SA@biochar) gel beads immobilized bioreactor was established to remove nitrate, manganese, and phenol. The optimum conditions for preparing gel beads were studied by response surface methodology (RSM). Notably, the removal efficiencies of nitrate, Mn(II), and phenol were 94.64, 72.74, and 93.97% at C/N of 2.0; the concentrations of Mn(II) and phenol were 20 and 1 mg L-1, respectively. Moreover, addition of different concentrations of phenol significantly affected the components of dissolved organic matter, bacterial activity, and bioreactor performance. The biological manganese oxide (BMO) with three-dimensional petal-type structure produced during Mn(II) oxidation showed excellent adsorption capacity. The removal of phenol relied on a combination of biological action and adsorption processes. High-throughput analysis showed that Zoogloea sp. was the predominant bacterial group.
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Affiliation(s)
- Yue Wang
- 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.
| | - 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
| | - Qiao Chang
- 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
| | - Yihan Bai
- 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
| | - Zhihong Gao
- 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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15
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Karray R, Elloumi W, Ben Ali R, Loukil S, Chamkha M, Karray F, Sayadi S. A novel bioprocess combining anaerobic co-digestion followed by ultra-filtration and microalgae culture for optimal olive mill wastewater treatment. J Environ Manage 2022; 303:114188. [PMID: 34875565 DOI: 10.1016/j.jenvman.2021.114188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/21/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Treatment of olive mill wastewater (OMW) has received considerable research globally due to its influence on the technical, economic, and environmental sustainability of wastewater biogas production. This work presents a novel combined biological process for OMW treatment in terms to produce for the first time, treated OMW and a valuable microalgae biomass. The process involves anaerobic co-digestion (AD), a low cut-off membrane ultra-filtration (UF) and a subsequent Scenedesmus sp. culture. The AD of OMW was conducted at high initial COD ranging from 28 to 38 g/L using an up-flow anaerobic fixed bed bio-reactor (300 L). Results revealed that the maximum biogas production was about 0.507 L/g CODintroduced.day containing 73% of methane corresponding to a methane yield of 0.370 L/g CODintroduced.day obtained at an organic loading rate of 4.58 g COD/L.day. High removal levels of COD, total phenolic compounds, and total suspended solids in the anaerobic liquid digestate (ALD) were achieved after AD and UF. Scenedesmus sp. was then cultivated on the ultra-filtrated ALD. A maximum biomass productivity of 0.15 g/L.day was recorded when Scenedesmus sp. is grown on 25% of ultra-filtrated ALD with a maximum nitrogen removal rate of 15.18 mg/L.day and an almost total elimination of phosphorus and phenolic compounds.
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Affiliation(s)
- Raida Karray
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia.
| | - Wièm Elloumi
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia
| | - Rihab Ben Ali
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia
| | - Slim Loukil
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia
| | - Mohamed Chamkha
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia
| | - Fatma Karray
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, P.B "1177", 3018, Sfax, Tunisia
| | - Sami Sayadi
- Biotechnology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar.
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Xie X, Liu J, Jiang Z, Li H, Ye M, Pan H, Zhu J, Song H. The conversion of the nutrient condition alter the phenol degradation pathway by Rhodococcus biphenylivorans B403: A comparative transcriptomic and proteomic approach. Environ Sci Pollut Res Int 2021; 28:56152-56163. [PMID: 34046837 DOI: 10.1007/s11356-021-14374-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Highly toxic phenol causes a threat to the ecosystem and human body. The development of bioremediation is a crucial issue in environmental protection. Herein, Rhodococcus biphenylivorans B403, which was isolated from the activated sludge of the sewage treatment plant, exhibited a good tolerance and removal efficiency to phenol. The degradation efficiency of phenol increased up to 62.27% in the oligotrophic inorganic medium (MM) containing 500-mg/L phenol at 18 h. R. biphenylivorans B403 cultured in the MM medium showed a higher phenol degradation efficiency than that in the eutrophic LB medium. On the basis of the transcriptomic and proteomic analysis, a total of 799 genes and 123 proteins showed significantly differential expression between two different culture conditions, especially involved in phenol degradation, carbon metabolism, and nitrogen metabolism. R. biphenylivorans B403 could alter the phenol degradation pathway by facing different culture conditions. During the phenol removal in the oligotrophic inorganic medium, muconate cycloisomerase, acetyl-CoA acyltransferase, and catechol 1,2-dioxygenase in the ortho-pathway for phenol degradation showed upregulation compared with those in the eutrophic organic medium. Our study provides novel insights into the possible pathway underlying the response of bacterium to environmental stress for phenol degradation.
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Affiliation(s)
- Xiaohang Xie
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Regional Development and Environmental Response, School of Resources and Environmental Science, Hubei University, Wuhan, 430062, China
| | - Jiashu Liu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Industrial Biotechnology, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Zhengbing Jiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Industrial Biotechnology, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Huanan Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Industrial Biotechnology, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Meng Ye
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Regional Development and Environmental Response, School of Resources and Environmental Science, Hubei University, Wuhan, 430062, China
| | - Hong Pan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Regional Development and Environmental Response, School of Resources and Environmental Science, Hubei University, Wuhan, 430062, China
| | - Jingwei Zhu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- Hubei Key Laboratory of Regional Development and Environmental Response, School of Resources and Environmental Science, Hubei University, Wuhan, 430062, China
| | - Huiting Song
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China.
- Hubei Key Laboratory of Regional Development and Environmental Response, School of Resources and Environmental Science, Hubei University, Wuhan, 430062, China.
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17
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Petronijević M, Panić S, Savić S, Agbaba J, Molnar Jazić J, Milanović M, Đurišić-Mladenović N. Characterization and application of biochar-immobilized crude horseradish peroxidase for removal of phenol from water. Colloids Surf B Biointerfaces 2021; 208:112038. [PMID: 34454363 DOI: 10.1016/j.colsurfb.2021.112038] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/22/2021] [Accepted: 08/12/2021] [Indexed: 01/18/2023]
Abstract
Biochar (BC) has attracted much attention as an environmentally friendly material for application in wastewater treatment. In this study, a suitability of wood-derived BC as a support for covalent immobilization of horseradish peroxidase (HRP) across glutaraldehide as crosslinker, known for the capability to remove phenol from water, was investigated. The efficiency of the immobilized HRP in removal of phenol (2 mM) from water at different reaction conditions (varying dosages of polyethylene glycol (PEG300) 0-750 mg/L; H2O2 1.5-3.5 mM, as well as reaction time 5-120 min) and the general toxicity of bio-treated water (Allium cepa test) were measured. All analyzes were performed for free enzyme as well. The immobilized enzyme showed the highest activity at temperature 30 °C and pH 7.0. The greatest efficiency of immobilized enzyme in phenol removing (90 %) was obtained by applying 2.5 mM H2O2 and 1.5 mg/L of PEG300 at pH 7.0 after 2 h of reaction period. After 4 washings, immobilized HRP retained more than 79 % activity with phenol removal of 64 %. Utilizing immobilized enzyme significantly reduces the toxicity of the tested water (80 %), which further suggested that it might be considered as an environmentally acceptable process for wastewater treatment. Possible degradation products remained in treated water were analyzed in water samples by liquid and gas chromatography with mass spectrometry, including also analysis of volatiles by solid phase microextraction technique; different phenol-base compounds were detected.
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Affiliation(s)
- Mirjana Petronijević
- University of Novi Sad, Faculty of Technology Novi Sad, 21000, Novi Sad, Bulevar cara Lazara 1, Serbia.
| | - Sanja Panić
- University of Novi Sad, Faculty of Technology Novi Sad, 21000, Novi Sad, Bulevar cara Lazara 1, Serbia
| | - Saša Savić
- University of Niš, Faculty of Technology, 16000, Leskovac, Bulevar Oslobođenja 124, Serbia
| | - Jasmina Agbaba
- University of Novi Sad, Faculty of Science, 21000, Novi Sad, Trg Dositeja Obradovića 3, Serbia
| | - Jelena Molnar Jazić
- University of Novi Sad, Faculty of Science, 21000, Novi Sad, Trg Dositeja Obradovića 3, Serbia
| | - Marija Milanović
- University of Novi Sad, Faculty of Technology Novi Sad, 21000, Novi Sad, Bulevar cara Lazara 1, Serbia
| | - Nataša Đurišić-Mladenović
- University of Novi Sad, Faculty of Technology Novi Sad, 21000, Novi Sad, Bulevar cara Lazara 1, Serbia
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Al Bsoul A, Hailat M, Abdelhay A, Tawalbeh M, Al-Othman A, Al-Kharabsheh IN, Al-Taani AA. Efficient removal of phenol compounds from water environment using Ziziphus leaves adsorbent. Sci Total Environ 2021; 761:143229. [PMID: 33160673 DOI: 10.1016/j.scitotenv.2020.143229] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/14/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Abstract
Industrial processes generate toxic organic molecules that pollute environment water. Phenol and its derivative are classified among the major pollutant compounds found in water. They are naturally found in some industrial wastewater effluents. The removal of phenol compounds is therefore essential because they are responsible for severe organ damage if they exist above certain limits. In this study, ground Ziziphus leaves were utilized as adsorbents for phenolic compounds from synthetic wastewater samples. Several experiments were performed to study the effect of several conditions on the capacity of the Ziziphus leaves adsorbent, namely: the initial phenol concentration, the adsorbent concentration, temperature, pH value, and the presence of foreign salts (NaCl and KCl). The experimental results indicated that the adsorption process reached equilibrium in about 4 h. A drop in the amount of phenol removal, especially at higher initial concentration, was noticed upon increasing the temperature from 25 to 45 °C. This reflects the exothermic nature of the adsorption process. This was also confirmed by the calculated negative enthalpy of adsorption (-64.8 kJ/mol). A pH of 6 was found to be the optimum value at which the highest phenol removal occurred with around 15 mg/g at 25 °C for an initial concentration of 200 ppm. The presence of foreign salts has negatively affected the phenol adsorption process. The fitting of the experimental data, using different adsorption isotherms, indicated that the Harkins-Jura isotherm model was the best fit, evident by the high square of the correlation coefficient (R2) values greater than 0.96. The kinetic study revealed that the adsorption was represented by a pseudo-second-order reaction. The results of this study offer a basis to use Ziziphus leaves as promising adsorbents for efficient phenol removal from wastewater.
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Affiliation(s)
- Abeer Al Bsoul
- Al-Balqa Applied University, Al-Huson University College, Department of Chemical Engineering, Jordan
| | - Mohammad Hailat
- Al-Balqa Applied University, Al-Huson University College, Department of Chemical Engineering, Jordan
| | - Arwa Abdelhay
- Department of Water and Environmental Engineering, German Jordanian University, Jordan
| | - Muhammad Tawalbeh
- Sustainable and Renewable Energy Engineering Department, University of Sharjah, Sharjah, United Arab Emirates
| | - Amani Al-Othman
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, United Arab Emirates.
| | | | - Ahmed A Al-Taani
- Department of Life and Environmental Sciences, College of Natural & Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates; Department of Earth and Environmental Sciences, Yarmouk University, Jordan
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19
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Elkady M, Salama E, Amer WA, Ebeid EZM, Ayad MM, Shokry H. Novel eco-friendly electrospun nanomagnetic zinc oxide hybridized PVA/alginate/chitosan nanofibers for enhanced phenol decontamination. Environ Sci Pollut Res Int 2020; 27:43077-43092. [PMID: 32729039 DOI: 10.1007/s11356-020-10247-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
In the current study, poly(vinyl alcohol)/alginate/chitosan (PVA/Alg/CS) composite nanofiber was immobilized with six different ratios of nanomagnetic zinc oxide (M-ZnO) (0 wt%, 0.2 wt%, 0.4 wt%, 0.6 wt%, 0.8 wt%, and 1 wt%) via the electrospinning technique. The various fabricated composite (M-6) nanofibers were characterized using Fourier transform infrared (FTIR), X-ray diffractometer (XRD), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), atomic force microscope (AFM), thermogravimetric analysis (TGA), mechanical testing machine, and optical contact angle measurement. The fabricated composite nanofibers were applied for the adsorption of phenol from aqueous solutions. The 1.0 wt% M-ZnO/PVA/Alg/CS composite nanofibers were selected as the best phenol adsorbent with removal percentage of 84.22%. The influence of different processing parameter such as contact time, composite nanofiber dosage, pH, initial pollutant concentration, and temperature were examined. Increasing nanofiber dosage and the solution temperature was found to enhance the phenol adsorption onto the prepared nanocomposites. The maximum percentage of phenol removal was achieved at 84.22% after 90 min. Meanwhile, the maximum monolayer adsorption capacity (at pH = 5.0) was estimated to be 10.03 mg g-1 at 25 °C. Kinetic, isotherm, and thermodynamic studies were designated to proof the endothermic, spontaneous, and thermodynamically nature of the phenol adsorption process. These outcomes indicate the effectiveness of the fabricated M-ZnO/PVA/Alg/CS nanofibers as adsorbent materials for phenol from aqueous solutions.
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Affiliation(s)
- Marwa Elkady
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt
- Chemical and Petrochemical Engineering Department, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, Alexandria, 21934, Egypt
| | - Eslam Salama
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
- Environment and Natural Materials Research Institute (ENMRI), City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, 21934, Egypt
| | - Wael A Amer
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - El-Zeiny M Ebeid
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mohamad M Ayad
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
- Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Alexandria, 21934, Egypt
| | - Hassan Shokry
- Electronic Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt.
- Environmental Engineering Department, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Alexandria, 21934, Egypt.
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20
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Younis AM, Elkady EM, Saleh SM. Novel eco-friendly amino-modified nanoparticles for phenol removal from aqueous solution. Environ Sci Pollut Res Int 2020; 27:30694-30705. [PMID: 32468377 DOI: 10.1007/s11356-020-09313-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
Herein, the impact of using dried Caulerpa prolifera nanoparticles and silica-coated Caulerpa prolifera nanoparticles for the removal of phenol from aqueous solution has been investigated. The chemical structure and morphology of both dried Caulerpa prolifera nanoparticles and silica-coated Caulerpa prolifera nanoparticles were characterized by using Fourier-transform infrared spectroscopy (FTIR), Brunauer Emmett Teller (BET), scanning electron microscopy (SEM), and transmission electron microscope (TEM). Batch mode experiments were conducted depending on adsorbent dosage, pH, contact time, and initial phenol concentration. In order to investigate the adsorption mechanism of the phenol molecules to the surface of the nanoparticles, kinetic models including pseudo-first-order, pseudo-second-order, and intra-particle diffusion models were executed. To describe the equilibrium isotherms, Langmuir and Freundlich isotherms were analyzed. However, the Langmuir isotherm model was agreed to be more significant with the obtained experimental data.
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Affiliation(s)
- Alaa M Younis
- Aquatic Environment Department, Faculty of Fish Resources, Suez University, Suez, 43518, Egypt.
| | - Eman M Elkady
- Marine Chemistry Lab, National Institute of Oceanography & Fisheries, Suez, Egypt
| | - Sayed M Saleh
- Department of Chemistry, College of Science, Qassim University, Buraidah, Saudi Arabia
- Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez, 43721, Egypt
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21
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Kong W, Yang S, Guo B, Wang H, Huo H, Zhang A, Niu S. Growth behavior, glucose consumption and phenol removal efficiency of Chlorella vulgaris under the synergistic effects of glucose and phenol. Ecotoxicol Environ Saf 2019; 186:109762. [PMID: 31629189 DOI: 10.1016/j.ecoenv.2019.109762] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
The use of algae is an effective approach to remove phenol and its derivatives from polluted water. The growth behavior, glucose consumption and phenol removal efficiency of Chlorella vulgaris under the synergistic effects of glucose and phenol were investigated. The evolutions of tolerance and removal efficiency of C. vulgaris to phenol under different trophic modes and glucose contents were observed. The results revealed that growth of C. vulgaris were inhibited with the increase of phenol from 0 to 400 mg L-1 in culture media; the tolerance to phenol enhanced with the addition of glucose from 2 to 10 g L-1, while glucose consumption was inhibited with the increase of phenol content; phenol removal efficiency varied with glucose concentrations in mixotrophic media. The finding suggested that phenol inhibited the growth of C. vulgaris and glucose assimilation under mixotrophic cultivation, while appropriate glucose addition could enhance the tolerance of C. vulgaris to phenol and affect the phenol removal efficiency.
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Affiliation(s)
- Weibao Kong
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China.
| | - Shuling Yang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Baomin Guo
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Hui Wang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Huanran Huo
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Aimei Zhang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Shiquan Niu
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
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22
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Jia X, Zhang S, Li J, Xia J, Yao R, Zhao X, Wu B, Bai F, Xiao Y. Engineered bacterial biofloc formation enhancing phenol removal and cell tolerance. Appl Microbiol Biotechnol 2019; 104:1187-1199. [PMID: 31834438 DOI: 10.1007/s00253-019-10289-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/18/2019] [Accepted: 11/28/2019] [Indexed: 12/17/2022]
Abstract
A microbial floc consisting of a community of microbes embedded in extracellular polymeric substances matrix can provide microbial resistances to toxic chemicals and harsh environments. Phenol is a toxic environmental pollutant and a typical lignin-derived phenolic inhibitor. In this study, we genetically engineered Escherichia coli cells by expressions of diguanylate cyclases (DGCs) to promote proteinaceous and aliphatic biofloc formation. Compared with the planktonic E. coli cells, the biofloc-forming cells improved phenol removal rate by up to 2.2-folds, due to their substantially improved tolerance (up to 149%) to phenol and slightly enhanced cellular activity (20%) of phenol hydroxylase (PheH). The engineered bioflocs also improved E. coli tolerance to other toxic compounds such as furfural, 5-hydroxymethylfurfural, and guaiacol. Additionally, the strategy of the engineered biofloc formation was applicable to Pseudomonas putida and enhanced its tolerance to phenol. This study highlights a strategy to form engineered bioflocs for improved cell tolerance and removal of toxic compounds, enabling their universality of use in bioproduction and bioremediation.
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Affiliation(s)
- Xiao Jia
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shun Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jiawei Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Juan Xia
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ruilian Yao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xinqing Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Bing Wu
- Faculty of Civil and Environmental Engineering, University of Iceland, Hjardarhagi 2-6, IS-107, Reykjavik, Iceland
| | - Fengwu Bai
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yi Xiao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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23
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Akpınar F, Evli S, Güven G, Bayraktaroğlu M, Kilimci U, Uygun M, Aktaş Uygun D. Peroxidase Immobilized Cryogels for Phenolic Compounds Removal. Appl Biochem Biotechnol 2020; 190:138-47. [PMID: 31309412 DOI: 10.1007/s12010-019-03083-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/05/2019] [Indexed: 10/26/2022]
Abstract
In this presented work, preparation of poly(AAm) cryogel, peroxidase immobilization onto the poly(AAm) cryogel, and usability of these enzyme modified cryogels for phenolic compounds removal were described. For this purpose, poly(AAm) cryogels were synthesized by using cryocopolymerization technique at sub-zero temperatures, and covalently functionalized with peroxidase enzyme by EDC/NHS chemistry. Characterization of the cryogels was carried out by FTIR, SEM, and EDX analysis. Maximum peroxidase loading onto poly(AAm) cryogel was found to be as 127.30 mg/g cryogel. Kinetic parameters of free and immobilized peroxidases were also investigated along with the stability tests. Finally, phenolic compounds removal efficiency of the peroxidase immobilized poly(AAm) cryogel was studied towards model phenolics such as phenol, bisphenol A, guaiacol, pyrogallol, and catechol; and very high phenolic removal efficiency was recorded.
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24
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Channa AM, Baytak S, Memon SQ, Talpur MY. Equilibrium, kinetic and thermodynamic studies of removal of phenol from aqueous solution using surface engineered chemistry. Heliyon 2019; 5:e01852. [PMID: 31194060 DOI: 10.1016/j.heliyon.2019.e01852] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 05/02/2019] [Accepted: 05/28/2019] [Indexed: 11/22/2022] Open
Abstract
Iron impregnated activated carbon has been used as a new adsorbent for the adsorptive removal of phenol from waste water. Impregnation of iron was confirmed by Fourier transform infrared spectroscopy and scanning electron microscope and energy dispersive spectroscopy. Different parameters affecting the adsorption capacity of Iron impregnated activated carbon such as Iron impregnated activated carbon dosage, contact time, pH of solution, initial concentration of phenol and agitation speed were optimized. The residual concentration of phenol was determined by UV-Vis spectroscopy. Maximum adsorption efficiency was calculated 98.5% at optimized parameters: concentration of phenol 25 mg L−1, Iron impregnated activated carbon dose 75 mg, pH 7.0 and agitation time 90 min. The experimental data was fitted to different adsorption isotherms and adsorption capacities obtained were 20 and 15 mg g−1, respectively. Adsorption energy was found to be 1.54 kJ mol−1 which predicts that phenol was adsorbed onto the Iron impregnated activated carbon through physisorption.
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25
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Li J, Chen X, Xu D, Pan K. Immobilization of horseradish peroxidase on electrospun magnetic nanofibers for phenol removal. Ecotoxicol Environ Saf 2019; 170:716-721. [PMID: 30580166 DOI: 10.1016/j.ecoenv.2018.12.043] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 05/25/2023]
Abstract
In this study, Fe3O4/polyacrylonitrile (PAN) magnetic nanofibers (MNFs) were fabricated by electrospinning method to immobilize the horseradish peroxidase (HRP), making which a complex platform for phenol removal application. Results indicated that, the average diameter of MNFs was about 200-400 nm and the maximum saturation magnetic induction was 19.03 emu/g. Compared with the free HRP, the modified HRP showed no change in optimum pH, but showed higher catalytic activity. Moreover, HRP immobilized MNFs (H-MNFs) with 40% Fe3O4 nanoparticles loading had the lowest HRP loading, but had the highest relative activity, because of the magnetic synergy with the presence of MNPs. Subsequently, the 40% H-MNFs was used for the remediation of phenol wastewater, achieved the removal efficiency of phenol to 85% in the first round use, and remained 52% of efficiency after 5 recycles using. It was expected that the H-MNFs could be a potential application in wastewater treatment such as phenol removal.
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Affiliation(s)
- Jinlong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Xiangyang Chen
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Dongfeng Xu
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Kai Pan
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
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26
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Bettin F, Cousseau F, Martins K, Boff NA, Zaccaria S, Moura da Silveira M, Pinheiro Dillon AJ. Phenol removal by laccases and other phenol oxidases of Pleurotus sajor-caju PS-2001 in submerged cultivations and aqueous mixtures. J Environ Manage 2019; 236:581-590. [PMID: 30771677 DOI: 10.1016/j.jenvman.2019.02.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 01/09/2019] [Accepted: 02/02/2019] [Indexed: 06/09/2023]
Abstract
In this work, phenol removal from aqueous solutions by Pleurotus sajor-caju PS-2001 phenol oxidases was assessed under different conditions. In stirred-tank reactor (STR), 77, 82, 92 and 36% of removal were attained when initial concentrations of 1.0, 2.0, 3.0 and 4.0 mmol L-1 phenol, respectively, were used. Among the different enzymes produced by this fungus, phenol removal seems to be related to the activity of laccases that attained maximum values between 33 and 91 U mL-1 in STR. With an internal-loop airlift reactor (ILAR), phenol concentrations of 1.0, 2.0, 3.0, 4.0 and 5.0 mmol L-1 were evaluated, and removal of 70, 76, 82, 77 and 82%, respectively, were observed. In ILAR, however, superior maximum titres of laccases were quantified (80-285 U mL-1). Crude enzyme broths have also been tested for phenol removal from 3.0 mmol L-1 aqueous solutions, the best result (55% of removal) being obtained at pH 3.2 and 30 °C, without agitation, using 60 U mL-1 laccases. According to the data presented, phenol can be efficiently removed from liquid media in submerged cultures of P. sajor-caju PS-2001 even when carried out in a simple pneumatic reactor, whereas significantly less amount of the pollutant is degraded when a crude enzyme broth is used.
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Affiliation(s)
- Fernanda Bettin
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil.
| | - Francine Cousseau
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
| | - Kamila Martins
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
| | - Nicole Amanda Boff
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
| | - Simone Zaccaria
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
| | - Mauricio Moura da Silveira
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
| | - Aldo José Pinheiro Dillon
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS, CEP 95070-560, Brazil
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27
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Sun HL, Chuai J, Wei H, Zhang X, Yu H. Multi-functional organic gelator derived from phenyllactic acid for phenol removal and oil recovery. J Hazard Mater 2019; 366:46-53. [PMID: 30502572 DOI: 10.1016/j.jhazmat.2018.11.095] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/30/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Supramolecular gels, a fascinating class of soft materials, are of great interest for their wide applications. In this work, a series of organic gelators derived from phenyllactic acid were prepared, and their gelation properties were further investigated. It was found that the gelator 1e bearing a hydrazine moiety could congeal 17 kinds of common organic liquids (polar and non-polar) efficiently. Meanwhile, the morphological structures and dominant factors of the gel were examined by scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), concentration and temperature-dependent 1H NMR. Crucially, the gelator displayed outstanding performances in toxic phenol removal and spilled oil and petroleum products recovery. Moreover, it also displayed a satisfactory recyclability, which will greatly promote its application in practice. These impressive results will provide a novel avenue for the water treatment and the development of functional supramolecular gel materials.
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Affiliation(s)
- He-Lue Sun
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, PR China
| | - Jing Chuai
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, PR China
| | - Haoqi Wei
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, PR China
| | - Xin Zhang
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, PR China
| | - Haitao Yu
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, PR China.
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28
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Hao Z, Wang C, Yan Z, Jiang H, Xu H. Magnetic particles modification of coconut shell-derived activated carbon and biochar for effective removal of phenol from water. Chemosphere 2018; 211:962-969. [PMID: 30119027 DOI: 10.1016/j.chemosphere.2018.08.038] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/06/2018] [Accepted: 08/08/2018] [Indexed: 06/08/2023]
Abstract
The separation and recovery of pollutant-loaded magnetic carbon materials from organic contaminated environment is recently concerned, but the change of sorption ability and mechanism of activated carbon and biochar caused by magnetic particles modification still need to be explored. Here, the magnetic modification of two coconut shell-, coal-derived activated carbon and one biochar, and its effect on the removal of phenol from water were investigated. Magnetic activated carbon (MAC) and magnetic biochar (MBC) were prepared by co-precipitation. The increase of mass magnetic susceptibilities and energy dispersive X-ray spectroscopy (EDX) analysis showed that magnetic particles were successfully coated on the surface of virgin carbonaceous materials (VCMs). Magnetic modification enhanced the surface area and pore volume of activated carbon, and preserved those structure properties of biochar. Magnetic activated carbon had lower adsorption rates (10.641 g mg-1·min-1) than virgin activated carbon (20.575 g mg-1·min-1) while magnetic biochar exhibited higher adsorption rate (0.618 g mg-1·min-1) compared with virgin biochar (0.040 g mg-1·min-1), which were related to mass transport process. Data from Langmuir model results suggested that maximum adsorption capacities of three carbon adsorbents were increased by magnetic modification. The enhanced removal of phenol after magnetizing process may attribute to the increase of specific surface area and pore volume. Among VCMs/MCCs, magnetic coconut shell-derived carbon material with 951.84 m2/g surface area exhibited the most organic contaminant sorption performance. This finding gives insight into the adsorption mechanism of magnetic AC/BC for phenol, and provides a guidance to choose the appropriate magnetic composites to remove the organic contaminant effectively.
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Affiliation(s)
- Zheng Hao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zaisheng Yan
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Helong Jiang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Huacheng Xu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
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29
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Braghiroli FL, Bouafif H, Hamza N, Neculita CM, Koubaa A. Production, characterization, and potential of activated biochar as adsorbent for phenolic compounds from leachates in a lumber industry site. Environ Sci Pollut Res Int 2018; 25:26562-26575. [PMID: 29992415 DOI: 10.1007/s11356-018-2712-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 07/04/2018] [Indexed: 05/20/2023]
Abstract
There is growing interest in low-cost, efficient materials for the removal of organic contaminants in municipal and industrial effluents. In this study, the efficiency of biochar and activated biochar, as promising adsorbents for phenol removal, was investigated at high (up to 1500 mg L-1) and low concentrations (0.54 mg L-1) in synthetic and real effluents (from wood-residue deposits in Québec), respectively. The performance of both materials was then evaluated in batch adsorption experiments, which were conducted using a low solid/liquid ratio (0.1 g:100 mL) at different phenol concentrations (C0 = 5-1500 mg L-1), and at 20 °C. Activated biochars presented higher phenol adsorption capacity compared to biochars due to their improved textural properties, higher micropore volume, and proportion of oxygenated carbonyl groups connected to their surface. The sorption equilibrium was reached within less than 4 h for all of materials, while the Langmuir model best described their sorption process. The maximum sorption capacity of activated biochars for phenol was found to be twofold relative to biochars (303 vs. 159 mg g-1). Results also showed that activated biochars were more effective than biochars in removing low phenol concentrations in real effluents. In addition, 95% of phenol removal was attained within 96 h (although 85% was removed after 4 h), thus reaching below the maximum authorized concentration allowed by Québec's discharge criteria (0.05 mg L-1). These results show that activated biochars made from wood residues are promising potential adsorbent materials for the efficient treatment of phenol in synthetic and real effluents.
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Affiliation(s)
- Flavia Lega Braghiroli
- Research Forest Institute (Institut de recherche sur les forêts - IRF), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada.
- Centre Technologique des Résidus Industriels (CTRI, Technology Center for Industrial Waste), Cégep de l'Abitibi-Témiscamingue (College of Abitibi-Témiscamingue), 425 Boul. du Collège, Rouyn-Noranda, QC, J9X 5E5, Canada.
| | - Hassine Bouafif
- Centre Technologique des Résidus Industriels (CTRI, Technology Center for Industrial Waste), Cégep de l'Abitibi-Témiscamingue (College of Abitibi-Témiscamingue), 425 Boul. du Collège, Rouyn-Noranda, QC, J9X 5E5, Canada
| | - Nesrine Hamza
- Research Forest Institute (Institut de recherche sur les forêts - IRF), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada
| | - Carmen Mihaela Neculita
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada
| | - Ahmed Koubaa
- Research Forest Institute (Institut de recherche sur les forêts - IRF), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada
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30
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Ren LF, Chen R, Zhang X, Shao J, He Y. Phenol biodegradation and microbial community dynamics in extractive membrane bioreactor (EMBR) for phenol-laden saline wastewater. Bioresour Technol 2017; 244:1121-1128. [PMID: 28869125 DOI: 10.1016/j.biortech.2017.08.121] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/14/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Abstract
An extractive membrane bioreactor (EMBR) for phenol-laden saline wastewater was set up in this study to investigate the variations of phenol removal, extracellular polymeric substance (EPS) release and microbial community dynamics. The gradual release of phenol and the total separation of salt were achieved by silicon rubber tube membrane. Only phenol (55.6-273.9mg/L) was extracted into microorganism unit from wastewaters containing 1.0-5.0g/L phenol and 35.0g/L NaCl. After 82d of EMBR operation, maximal 273.9mg/L of phenol was removed in EMBR. Low concentration of phenol in wastewater (2.5g/L) played a favorable effect on the microbial community structure, community and dynamics. The enumeration of Proteobacteria (30,499 sequences) significantly increased with more released EPS (82.82mg/gSS) to absorb and degrade phenol, compared to the virgin data without phenol addition. However, high concentration of phenol showed adverse effects on EPS release, microbial abundance and biodiversity.
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Affiliation(s)
- Long-Fei Ren
- School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China
| | - Rui Chen
- School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China
| | - Xiaofan Zhang
- School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China
| | - Jiahui Shao
- School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China.
| | - Yiliang He
- School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China
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31
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Batista-García RA, Kumar VV, Ariste A, Tovar-Herrera OE, Savary O, Peidro-Guzmán H, González-Abradelo D, Jackson SA, Dobson ADW, Sánchez-Carbente MDR, Folch-Mallol JL, Leduc R, Cabana H. Simple screening protocol for identification of potential mycoremediation tools for the elimination of polycyclic aromatic hydrocarbons and phenols from hyperalkalophile industrial effluents. J Environ Manage 2017; 198:1-11. [PMID: 28499155 DOI: 10.1016/j.jenvman.2017.05.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 04/28/2017] [Accepted: 05/05/2017] [Indexed: 06/07/2023]
Abstract
A number of fungal strains belonging to the ascomycota, basidiomycota and zygomycota genera were subjected to an in vitro screening regime to assess their ligninolytic activity potential, with a view to their potential use in mycoremediation-based strategies to remove phenolic compounds and polycyclic aromatic hydrocarbons (PAHs) from industrial wastewaters. All six basidiomycetes completely decolorized remazol brilliant blue R (RBBR), while also testing positive in both the guaiacol and gallic acid tests indicating good levels of lignolytic activity. All the fungi were capable of tolerating phenanthrene, benzo-α- pyrene, phenol and p-chlorophenol in agar medium at levels of 10 ppm. Six of the fungal strains, Pseudogymnoascus sp., Aspergillus caesiellus, Trametes hirsuta IBB 450, Phanerochate chrysosporium ATCC 787, Pleurotus ostreatus MTCC 1804 and Cadophora sp. produced both laccase and Mn peroxidase activity in the ranges of 200-560 U/L and 6-152 U/L, respectively, in liquid media under nitrogen limiting conditions. The levels of adsorption of the phenolic and PAHs were negligible with 99% biodegradation being observed in the case of benzo-α-pyrene, phenol and p-chlorophenol. The aforementioned six fungal strains were also found to be able to effectively treat highly alkaline industrial wastewater (pH 12.4). When this wastewater was supplemented with 0.1 mM glucose, all of the tested fungi, apart from A. caesiellus, displayed the capacity to remove both the phenolic and PAH compounds. Based on their biodegradative capacity we found T. hirsuta IBB 450 and Pseudogymnoascus sp., to have the greatest potential for further use in mycoremediation based strategies to treat wastestreams containing phenolics and PAHs.
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Affiliation(s)
- Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos (UAEM), Cuernavaca, Morelos, Mexico; Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada.
| | - Vaidyanathan Vinoth Kumar
- Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada; Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, Tamil Nadu, India
| | - Arielle Ariste
- Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada
| | - Omar Eduardo Tovar-Herrera
- Instituto de Biotecnología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, Mexico
| | - Olivier Savary
- Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada
| | - Heidy Peidro-Guzmán
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos (UAEM), Cuernavaca, Morelos, Mexico
| | - Deborah González-Abradelo
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos (UAEM), Cuernavaca, Morelos, Mexico
| | | | - Alan D W Dobson
- School of Microbiology, University College Cork, Cork, Ireland
| | | | | | - Roland Leduc
- Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada
| | - Hubert Cabana
- Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada.
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Cheng T, Zhang W, Zhang W, Yuan G, Wang H, Liu T. An oleaginous filamentous microalgae Tribonema minus exhibits high removing potential of industrial phenol contaminants. Bioresour Technol 2017; 238:749-754. [PMID: 28526282 DOI: 10.1016/j.biortech.2017.05.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/04/2017] [Accepted: 05/07/2017] [Indexed: 06/07/2023]
Abstract
Discharge of industrial phenol contaminants could cause great harm on natural environment. Through oleaginous microalgae cultivation in phenolic wastewater, pollutants can be phototrophically biofixed into biomass as feedstock for bioenergy production. It was firstly reported in this study that, an oleaginous filamentous microalgae Tribonema minus exhibited strong environmental phenol removal ability. T. minus filaments showed 449.46mgg-1 of phenol-uptake capacity, obviously higher than those strains with low phenol absorption such as Scenedesmus dimorphus. And phenols could be removed efficiently at the initial phenol concentration up to 700mgL-1. Simultaneously, through T. minus growth, phenol concentration could be decreased from 100mgL-1 to the range of 0.1-0.5mgL-1, which meet industrial discharge need of phenol contaminants in most countries. So Tribonema minus is a potential algal specie to help the construction of integrated process for both oleaginous biomass production and bioremediation of phenol contaminants.
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Affiliation(s)
- Tianyou Cheng
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Wei Zhang
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China.
| | - Wenlei Zhang
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China
| | - Guanhua Yuan
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hui Wang
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China
| | - Tianzhong Liu
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, PR China
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El-Naas MH, Alhaija MA, Al-Zuhair S. Evaluation of an activated carbon packed bed for the adsorption of phenols from petroleum refinery wastewater. Environ Sci Pollut Res Int 2017; 24:7511-7520. [PMID: 28116622 DOI: 10.1007/s11356-017-8469-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 01/16/2017] [Indexed: 06/06/2023]
Abstract
The performance of an adsorption column packed with granular activated carbon was evaluated for the removal of phenols from refinery wastewater. The effects of phenol feed concentration (80-182 mg/l), feed flow rate (5-20 ml/min), and activated carbon packing mass (5-15 g) on the breakthrough characteristics of the adsorption system were determined. The continuous adsorption process was simulated using batch data and the parameters for a new empirical model were determined. Different dynamic models such as Adams-Bohart, Wolborsko, Thomas, and Yoon-Nelson models were also fitted to the experimental data for the sake of comparison. The empirical, Yoon-Nelson and Thomas models showed a high degree of fitting at different operation conditions, with the empirical model giving the best fit based on the Akaike information criterion (AIC). At an initial phenol concentration of 175 mg/l, packing mass of 10 g, a flow rate of 10 ml/min and a temperature of 25 °C, the SSE of the new empirical and Thomas models were identical (248.35) and very close to that of the Yoon-Nelson model (259.49). The values were significantly lower than that of the Adams-Bohart model, which was determined to be 19,358.48. The superiority of the new empirical model and the Thomas model was also confirmed from the values of the R 2 and AIC, which were 0.99 and 38.3, respectively, compared to 0.92 and 86.2 for Adams-Bohart model.
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Affiliation(s)
- Muftah H El-Naas
- Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Manal A Alhaija
- Chemical and Petroleum Engineering Department, UAE University, P. O. Box 15551, Al-Ain, UAE
| | - Sulaiman Al-Zuhair
- Chemical and Petroleum Engineering Department, UAE University, P. O. Box 15551, Al-Ain, UAE
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Saputra E, Zhang H, Liu Q, Sun H, Wang S. Egg-shaped core/shell α-Mn2O3@α-MnO2 as heterogeneous catalysts for decomposition of phenolics in aqueous solutions. Chemosphere 2016; 159:351-358. [PMID: 27318450 DOI: 10.1016/j.chemosphere.2016.06.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/02/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
Novel uniform ellipsoid α-Mn2O3@α-MnO2 core/shell (McMs) nanocomposites were prepared via a hydrothermal process with a shape-control protocol followed by calcination at different temperatures. The properties of the composites were characterized by a number of techniques such as thermogravimetric analysis (TGA), X-ray diffraction (XRD), N2 adsorption, and scanning electron microscopy (SEM). The core/shell materials were much effective in heterogeneous oxone(®) activation to generate sulfate and hydroxyl radicals for degradation of aqueous phenol. The McMs composites demonstrated catalytic activity for 100% phenol decomposition in short duration varying between 20 and 120 min, much higher than that of homogeneous Mn(2+) system with 95% phenol degradation in 120 min. They also showed a higher activity than single-phase α-Mn2O3 or α-MnO2. The catalytic activity of phenol degradation depends on temperature, oxone(®) concentration, phenol concentration, and catalyst loading. The catalysts also showed a stable activity in several cycles. Kinetic study demonstrated that phenol degradation reactions follow a first order reaction on McMs catalysts giving activation energies at 32.1-68.8 kJ/mol. With the detection of radicals by electron paramagnetic resonance (EPR), the generation mechanism was proposed.
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Affiliation(s)
- Edy Saputra
- Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC-CARE), Curtin University, GPO Box U1987, Perth, WA 6845, Australia; Department of Chemical Engineering, Riau University, Pekanbaru 28293, Indonesia
| | - Huayang Zhang
- Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC-CARE), Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Qiaoran Liu
- Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC-CARE), Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Hongqi Sun
- Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC-CARE), Curtin University, GPO Box U1987, Perth, WA 6845, Australia; School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia
| | - Shaobin Wang
- Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC-CARE), Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
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Cheng JR, Liu XM, Chen ZY, Zhang YS, Zhang YH. A Novel Mesophilic Anaerobic Digestion System for Biogas Production and In Situ Methane Enrichment from Coconut Shell Pyroligneous. Appl Biochem Biotechnol 2015; 178:1303-14. [PMID: 26638211 DOI: 10.1007/s12010-015-1946-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022]
Abstract
A novel mesophilic anaerobic digestion process with detoxification-treated coconut shell pyroligneous was established, exhibiting an effective advantage in biogas production. The pyroligneous collected contained 166.2 g l(-1) acetic acid, indicating great potential for biogas production. Detoxification was an effective way of simultaneously enriching biodegradable ingredients and removing inhibitors (mainly as phenols and organic acids) for digestion process. The digestion process lasted 96 h and fermentation characteristics (chemical oxygen demand (COD) removal ratio, volatile fatty acid (VFA) consumptions, pH, total gas, methane yield, and phenol removal efficiency) were measured. The experiments successfully explored the optimum detoxification parameters, oxidized with 10 % H2O2 followed by overliming, and demonstrated 89.3 % COD removal, 91.4 % methane content, 0.305 LCH4/g COD removed CH4 yield, and 88.81 % phenol removal ratio. This study provided clues to overcome the negative effects of inhibitors in pyroligneous on biogas production. The findings could contribute to significant process in detoxified pretreatment of pyroligneous and develop an economically feasible technology for treating pyroligneous after producing charcoal.
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Affiliation(s)
- Jing-Rong Cheng
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China. .,Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China.
| | - Xue-Ming Liu
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China
| | - Zhi-Yi Chen
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China
| | - You-Sheng Zhang
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China
| | - Ye-Hui Zhang
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China
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Feng C, Huang L, Yu H, Yi X, Wei C. Simultaneous phenol removal, nitrification and denitrification using microbial fuel cell technology. Water Res 2015; 76:160-170. [PMID: 25813490 DOI: 10.1016/j.watres.2015.03.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/25/2015] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Here we show that concomitant removal of phenol and nitrogen can be accomplished in a single dual-chamber microbial fuel cell (MFC) reactor, in which the two chambers are separated with an anion-exchange membrane. A series of experiments were performed with ammonium (230 NH4(+)-N mg L(-1)) and phenol (with concentrations varying from 0 to 1400 mg L(-1)) fed to the aerobic cathode chamber of the MFC. Experimental results demonstrated that no apparent inhibitory effect of phenol on the nitrifying reaction was noted even at the phenol concentration up to 600 mg L(-1). For all the experiments, simultaneous nitrification and denitrification was achieved in the MFC. In comparison to the traditional aerobic bioreactor (ABR) and the same MFC run under the open-circuit condition, the MFC reactor allowed less inhibition of nitrification to phenol exposure and higher rate of nitrogen removal. The data of bacterial analysis revealed that electrochemically active bacteria and denitrifiers in the anaerobic chamber play a significant role in electricity generation and anaerobic denitrification, respectively, while phenol-degrading bacteria, nitrifiers, and denitrifiers in the aerobic cathode chamber are responsible for phenol oxidation, aerobic nitrification and aerobic denitrification, respectively. These results imply that the MFC holds potential for simultaneous removal of phenolic compounds and nitrogen contained in some particular industrial wastewaters.
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Affiliation(s)
- Chunhua Feng
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
| | - Liqiao Huang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Hui Yu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Xiaoyun Yi
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
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Zhou S, Watanabe H, Wei C, Wang D, Zhou J, Tatarazako N, Masunaga S, Zhang Y. Reduction in toxicity of coking wastewater to aquatic organisms by vertical tubular biological reactor. Ecotoxicol Environ Saf 2015; 115:217-222. [PMID: 25706086 DOI: 10.1016/j.ecoenv.2015.02.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 02/08/2015] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
We conducted a battery of toxicity tests using photo bacterium, algae, crustacean and fish to evaluate acute toxicity profile of coking wastewater, and to evaluate the performance of a novel wastewater treatment process, vertical tubular biological reactor (VTBR), in the removal of toxicity and certain chemical pollutants. A laboratory scale VTBR system was set up to treat industrial coking wastewater, and investigated both chemicals removal efficiency and acute bio-toxicity to aquatic organisms. The results showed that chemical oxygen demand (COD) and phenol reductions by VTBR were approximately 93% and 100%, respectively. VTBR also reduced the acute toxicity of coking wastewater significantly: Toxicity Unit (TU) decreased from 21.2 to 0.4 for Photobacterium phosphoreum, from 9.5 to 0.6 for Isochrysis galbana, from 31.9 to 1.3 for Daphnia magna, and from 30.0 to nearly 0 for Danio rerio. VTBR is an efficient treatment method for the removal of chemical pollutants and acute bio-toxicity from coking wastewater.
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Affiliation(s)
- Siyun Zhou
- Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Haruna Watanabe
- National Institute for Environmental Studies, Endocrine Disrupters and Dioxin Research Project, 16-2 Onogawa, Tsukuba, Ibaraki 304-8506, Japan
| | - Chang Wei
- Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Dongzhou Wang
- Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jiti Zhou
- Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Norihisa Tatarazako
- National Institute for Environmental Studies, Endocrine Disrupters and Dioxin Research Project, 16-2 Onogawa, Tsukuba, Ibaraki 304-8506, Japan
| | - Shigeki Masunaga
- Faculty of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Ying Zhang
- Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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