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Gu Y, Dai P, Wu T, Yuan F, Yang Q. A novel physical-biochemical treatment of refinery wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120356. [PMID: 38377757 DOI: 10.1016/j.jenvman.2024.120356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/12/2024] [Accepted: 02/08/2024] [Indexed: 02/22/2024]
Abstract
As of 2022, China has achieved a crude oil processing capacity of 918 million tons, leading to a notable escalation in the production of refinery wastewater. The composition of refinery wastewater is intricate and diverse, posing a substantial challenge to its treatment. In order to facilitate appropriate discharge or reuse, an exhaustive separation process is imperative for refinery wastewater. Conventional pre-treatment processes typically employ inclined plate separators and dissolved air flotation (DAF) for the removal of oil and suspended solids (SS), while sequencing batch reactor (SBR), oxidation ditch, or biological aerated filter (BAF) are employed for the biological treatment process. However, these approaches encounter challenges such as a large spatial footprint, suboptimal treatment efficiency, and high energy consumption. In response to these challenges, this study introduces a novel integrated apparatus consisting of a high-efficiency oil remover (HEOR), coalescence oil remover (COR), and an airlift-enhanced loop bioreactor (AELR). A pilot-scale test was conducted to evaluate the performance of this integrated system in practical field applications. The pilot-scale tests reveal that, without the addition of chemical agents, the petroleum removal efficiency of "HEOR + COR" system was 1.2 times that of DAF. Compared with the SBR system, AELR's volume loading was increased by 1.56 times. The effluent quality achieved in the pilot-scale tests attained parity with that the original process. The "HEOR + COR + AELR" system exhibited energy and carbon emissions reduction of 28% and 30% compared to the "DAF + SBR" system, respectively. Therefore, the operating costs was reduced by approximate 1 Chinese Yuan (CNY) per ton of treated water. This technological advancement serves as a valuable reference for the implementation of low-carbon treatment of refinery wastewater.
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Affiliation(s)
- Yong Gu
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Pinyi Dai
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Tao Wu
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Fang Yuan
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Qiang Yang
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
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2
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Xu MY, Lin YL, Zhang TY, Hu CY, Tang YL, Deng J, Xu B. Chlorine dioxide-based oxidation processes for water purification:A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129195. [PMID: 35739725 DOI: 10.1016/j.jhazmat.2022.129195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/14/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Chlorine dioxide (ClO2) has emerged as a broad-spectrum, safe, and effective disinfectant due to its high oxidation efficiency and reduced formation of organochlorinated by-products during application. This article provides an updated overview of ClO2-based oxidation processes used in water treatment. A systematic review of scientific information and experimental data on ClO2-based water purification procedures is presented. Concerning ClO2-based oxidation derivative problems, the pros and cons of ClO2-based combined processes are assessed and disinfection by-product (DBP) control approaches are proposed. The kinetic and mechanistic data on ClO2 reactivity towards micropollutants are discussed. ClO2 selectively reacts with electron-rich moieties (anilines, phenols, olefins, and amines) and eliminates certain inorganic ions and microorganisms with high efficiency. The formation of chlorite and chlorate during the oxidation process is a crucial concern when utilizing ClO2. Future applications include the combination of ClO2 with ferrous ions, activated carbon, ozone, UV, visible light, or persulfate processes. The combined process can reduce by-product generation while still ensuring ClO2 sterilization and disinfection. Overall, this research could provide useful information and new insights into the application of ClO2-based technologies.
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Affiliation(s)
- Meng-Yuan Xu
- State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Yi-Li Lin
- Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 824, Taiwan, ROC
| | - Tian-Yang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Chen-Yan Hu
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, PR China
| | - Yu-Lin Tang
- State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Jing Deng
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, PR China
| | - Bin Xu
- State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
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Comparative analysis of RSM, ANN and ANFIS and the mechanistic modeling in eriochrome black-T dye adsorption using modified clay. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1016/j.sajce.2020.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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Pergal MV, Kodranov ID, Pergal MM, Avdin VV, Manojlović DD. Oxidative degradation and mineralization of bentazone from water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 55:1069-1079. [PMID: 32880524 DOI: 10.1080/03601234.2020.1816091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bentazone degradation efficiency and mineralization in water solutions using chlorine dioxide treatment were evaluated. Double distilled water and a river water sample spiked with bentazone were studied and compared after chlorine dioxide treatment. Degradation efficiency was determined using high-performance liquid chromatography (HPLC). Daphnia magna toxicity testing and total organic carbon (TOC) analysis were used to ascertain the toxicity of the degraded solutions and mineralization degree. Bentazone degradation products were identified using gas chromatography with a triple quadrupole mass detector (GC-MS-MS). A simple mechanistic scheme for oxidative degradation of bentazone was proposed based on the degradation products that were identified. Decrease in D. magna mortality, high degradation efficiency and partial bentazone mineralization were achieved by waters containing bentazone degradation products, which indicate the formation of less toxic compounds than the parent bentazone and effective removal of bentazone from the waters. Bentazone degraded into four main degradation products. Humic acid from Sava River water influenced bentazone degradation, resulting in a lower degradation efficiency in this matrix (about 10% lower than in distilled water). Chlorine dioxide treatment of water to degrade bentazone is efficient and offers a novel approach in the development of new technology for removal of this herbicide from contaminated water.
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Affiliation(s)
- Marija V Pergal
- Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Igor D Kodranov
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | | | - Viacheslav V Avdin
- Faculty of Chemistry, Institute of Natural and Exact Sciences, South Ural State University, Chelyabinsk, Russia
| | - Dragan D Manojlović
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
- Faculty of Chemistry, Institute of Natural and Exact Sciences, South Ural State University, Chelyabinsk, Russia
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Pergal MV, Kodranov ID, Dojčinović B, Avdin VV, Stanković DM, Petković BB, Manojlović DD. Evaluation of azamethiphos and dimethoate degradation using chlorine dioxide during water treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27147-27160. [PMID: 32399889 DOI: 10.1007/s11356-020-09069-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
Chlorine dioxide (ClO2) degradation of the organophosphorus pesticides azamethiphos (AZA) and dimethoate (DM) (10 mg/L) in deionized water and in Sava River water was investigated for the first time. Pesticide degradation was studied in terms of ClO2 level (5 and 10 mg/L), degradation duration (0.5, 1, 2, 3, 6, and 24 h), pH (3.00, 7.00, and 9.00), and under light/dark conditions in deionized water. Degradation was monitored using high-performance liquid chromatography. Gas chromatography coupled with triple quadrupole mass detector was used to identify degradation products of pesticides. Total organic carbon was measured to determine the extent of mineralization after pesticide degradation. Real river water was used under recommended conditions to study the influence of organic matter on pesticide degradation. High degradation efficiency (88-100% for AZA and 85-98% for DM) was achieved in deionized water under various conditions, proving the flexibility of ClO2 degradation for the examined organophosphorus pesticides. In Sava River water, however, extended treatment duration achieved lower degradation efficiency, so ClO2 oxidized both the pesticides and dissolved organic matter in parallel. After degradation, AZA produced four identified products (6-chlorooxazolo[4,5-b]pyridin-2(3H)-one; O,O,S-trimethyl phosphorothioate; 6-chloro-3-(hydroxymethyl)oxazolo[4,5-b]pyridin-2(3H)-one; O,O-dimethyl S-hydrogen phosphorothioate) and DM produced three (O,O-dimethyl S-(2-(methylamino)-2-oxoethyl) phosphorothioate; e.g., omethoate; S-(2-(methylamino)-2-oxoethyl) O,O-dihydrogen phosphorothioate; O,O,S-trimethyl phosphorodithioate). Simple pesticide degradation mechanisms were deduced. Daphnia magna toxicity tests showed degradation products were less toxic than parent compounds. These results contribute to our understanding of the multiple influences that organophosphorus pesticides and their degradation products have on environmental ecosystems and to improving pesticide removal processes from water.
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Affiliation(s)
- Marija V Pergal
- University of Belgrade - Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, Belgrade, 11000, Serbia.
| | - Igor D Kodranov
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000, Serbia
| | - Biljana Dojčinović
- University of Belgrade - Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, Belgrade, 11000, Serbia
| | - Viacheslav V Avdin
- South Ural State University, Lenin prospekt 76, Chelyabinsk, Russia, 454080
| | - Dalibor M Stanković
- The Vinca Institute of Nuclear Sciences, University of Belgrade, POB 522, Belgrade, 11001, Serbia
| | - Branka B Petković
- Faculty of Sciences, University of Priština, Lole Ribara 29,, Kosovska Mitrovica, 38220, Serbia
| | - Dragan D Manojlović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000, Serbia
- South Ural State University, Lenin prospekt 76, Chelyabinsk, Russia, 454080
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Elwakeel KZ, Elgarahy AM, Elshoubaky GA, Mohammad SH. Microwave assist sorption of crystal violet and Congo red dyes onto amphoteric sorbent based on upcycled Sepia shells. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:35-50. [PMID: 32399219 PMCID: PMC7203356 DOI: 10.1007/s40201-019-00435-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 12/30/2019] [Indexed: 05/04/2023]
Abstract
A new sorbent based on Sepia shells (cuttlefish bones) has been synthesized (SSBC) and tested for the sorption of cationic dye (crystal violet, CV) and an anionic dye (congo red, CR). SSBC was produced by reaction of sepia shells powder with urea in the presence of formaldehyde. In the first part of the work, the sorbent was characterized using scanning electron microscopy, energy dispersive X-ray analysis, Fourier-transform infra-red spectrometry and titration (for determining pHPZC). In a second step, sorption properties were tested on the two dyes through the study of pH effect, sorbent dosage, temperature and ionic strength; the sorption isotherms and uptake kinetics were analyzed at the optimum pH: Langmuir equation fits isotherm profiles while the kinetic profile can be described by the pseudo-second order rate equation. Maximum sorption capacities reach up to 0.536 mmol g-1 for CV and 0.359 mmol g-1 for CR, at pH 10.6 and 2.4, respectively. The comparison of sorption properties at different temperatures shows that the sorption is endothermic. Processing to the sorption under microwave irradiation (microwaved enforced sorption, MES) increases mass transfer and a contact time as low as 1 min is sufficient under optimized conditions (exposure time and power) reaching the equilibrium, while 2-3 h were necessary for "simple" sorption. Dye desorption was successfully tested using 0.5 M solutions of NaOH and HCl for the removal of CR and CV, respectively. The sorbent can be re-used for a minimum of four cycles of sorption/desorption. Finally, the sorbent was successfully tested on spiked tap water and real industrial wastewater.
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Affiliation(s)
- K. Z. Elwakeel
- Environmental Science Department, Faculty of Science, Port-Said University, Port-Said, Egypt
- University of Jeddah, College of Science, Department of Chemistry, Jeddah, Saudi Arabia
| | - A. M. Elgarahy
- Zoology Department, Faculty of Science, Port-Said University, Port-Said, Egypt
| | - G. A. Elshoubaky
- Botany Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - S. H. Mohammad
- Zoology Department, Faculty of Science, Port-Said University, Port-Said, Egypt
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El-Sayyad GS, Abd Elkodous M, El-Khawaga AM, Elsayed MA, El-Batal AI, Gobara M. Merits of photocatalytic and antimicrobial applications of gamma-irradiated CoxNi1−xFe2O4/SiO2/TiO2;x= 0.9 nanocomposite for pyridine removal and pathogenic bacteria/fungi disinfection: implication for wastewater treatment. RSC Adv 2020; 10:5241-5259. [PMID: 35498317 PMCID: PMC9049020 DOI: 10.1039/c9ra10505k] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/17/2020] [Indexed: 11/21/2022] Open
Abstract
In this paper, we report a layer-by-layer approach for the preparation of a concentric recyclable composite (CoxNi1−xFe2O4/SiO2/TiO2; x = 0.9) designed for wastewater treatment. The prepared composite was investigated by X-ray diffraction spectroscopy, high-resolution transmission electron microscopy and scanning electron microscopy (SEM) supported with energy dispersive X-ray (EDX) spectroscopy to analyze crystallinity, average particle size, morphology and elemental composition, respectively. The antimicrobial activities of the prepared composite have been investigated against multi-drug-resistant bacteria and pathogenic fungi using a variety of experiments, such as zone of inhibition, minimum inhibitory concentration, biofilm formation and SEM with EDX analysis of the treated bacterial cells. In addition, the effects of gamma irradiation (with different doses) and UV irradiation on the antibacterial abilities of the prepared composite have been evaluated. Moreover, the effect of gamma irradiation on the crystallite size of the prepared composite has been studied under varying doses of radiation (25 kGy, 50 kGy and 100 kGy). Finally, the photocatalytic efficiency of the prepared composite was tested for halogen-lamp-assisted removal of pyridine (artificial wastewater). Various parameters affecting the efficiency of the photocatalytic degradation, such as photocatalyst dose, pyridine concentration, pH, point of zero charge and the presence of hydrogen peroxide, have been studied. Our results show that the synthesized composite has a well-crystallized semi-spherical morphology with an average particle size of 125.84 nm. In addition, it possesses a high degree of purity, as revealed by EDX elemental analysis. Interestingly, the prepared composite showed promising antibacterial abilities against almost all the tested pathogenic bacteria and unicellular fungi, and this was further improved after gamma and UV irradiation. Finally, the prepared composite was very efficient in the light-assisted degradation of pyridine and its degradation efficiency can be tuned based on various experimental parameters. This work provides a revolutionary nanomaterial-based solution for the global water shortage and water contamination by offering a new wastewater treatment technique that is recyclable, cost effective and has an acceptable time and quality of water. In this paper, we report a layer-by-layer approach for the preparation of a concentric recyclable composite (CoxNi1−xFe2O4/SiO2/TiO2; x = 0.9) designed for wastewater treatment.![]()
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Affiliation(s)
- Gharieb S. El-Sayyad
- Drug Microbiology Laboratory
- Drug Radiation Research Department
- National Center for Radiation Research and Technology (NCRRT)
- Egyptian Atomic Energy Authority
- Cairo
| | - M. Abd Elkodous
- Department of Electrical and Electronic Information Engineering
- Toyohashi University of Technology
- Toyohashi
- Japan
- Center for Nanotechnology (CNT)
| | - Ahmed M. El-Khawaga
- Chemical Engineering Department
- Military Technical College
- Egyptian Armed Forces
- Cairo
- Egypt
| | - Mohamed A. Elsayed
- Chemical Engineering Department
- Military Technical College
- Egyptian Armed Forces
- Cairo
- Egypt
| | - Ahmed I. El-Batal
- Drug Microbiology Laboratory
- Drug Radiation Research Department
- National Center for Radiation Research and Technology (NCRRT)
- Egyptian Atomic Energy Authority
- Cairo
| | - Mohamed Gobara
- Chemical Engineering Department
- Military Technical College
- Egyptian Armed Forces
- Cairo
- Egypt
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8
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Elgarahy AM, Elwakeel KZ, Elshoubaky GA, Mohammad SH. Microwave-accelerated sorption of cationic dyes onto green marine algal biomass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:22704-22722. [PMID: 31172437 DOI: 10.1007/s11356-019-05417-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/07/2019] [Indexed: 05/22/2023]
Abstract
Monolithic algal green powder (MAGP) was fabricated based on the marine green macroalga Enteromorpha flexuosa. It was scrutinized by using scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), Fourier transform infrared (FT-IR), point of zero charge (PHPZC), and Brunauer-Emmett-Teller (BET) surface area. The ability of Enteromorpha flexuosa to capture both crystal violet (CV) and methylene blue (MB) from aqueous solutions was evaluated. The influence of variable conditional parameters on CV dye and MB dye batch sorption was investigated. Results showed that percentage removal of 90.3% and 93.4% were obtained under optimum conditions of variables for CV and MB, respectively. Effect of microwave radiation on dye sorption was also appraised. Processing the sorption under microwave irradiation (microwave-enforced sorption, MES) increases mass transfer and a contact time as low as 1 min is sufficient under optimized conditions (exposure time and power) reaching the equilibrium. The reusability of MAGP sorbent was achieved for four cycles of sorption/desorption by using 0.5 M HCl. The ability of MAGP for cationic dyes removal from spiked tap water and petrochemical plant discharge wastewater samples was successfully registered. Ultimately, the displayed data showed a superior and excellent ability of algal powder to be exploited as a green, harmless, and effective sorbent for cationic dye removal.
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Affiliation(s)
- Ahmed M Elgarahy
- Zoology Department, Faculty of Science, Port Said University, Port Said, Egypt
| | - Khalid Z Elwakeel
- Environmental Science Department, Faculty of Science, Port Said University, Port Said, Egypt.
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia.
| | - Gihan A Elshoubaky
- Botany Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Samya H Mohammad
- Zoology Department, Faculty of Science, Port Said University, Port Said, Egypt
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10
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Superhydrophilic nanofiltration membrane with antifouling property through in-situ mineralization of Ce 2 (CO 3 ) 3 nanoparticles. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Zou H, Wang Y. Azo dyes wastewater treatment and simultaneous electricity generation in a novel process of electrolysis cell combined with microbial fuel cell. BIORESOURCE TECHNOLOGY 2017; 235:167-175. [PMID: 28365344 DOI: 10.1016/j.biortech.2017.03.093] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/13/2017] [Accepted: 03/17/2017] [Indexed: 06/07/2023]
Abstract
A new process of electrolysis cell (EC) coupled with microbial fuel cell (MFC) was developed here and its feasibility in methyl red (MR) wastewater treatment and simultaneous electricity generation was assessed. Results indicate that an excellent MR removal and electricity production performance was achieved, where the decolorization and COD removal efficiencies were 100% and 89.3%, respectively and a 0.56V of cell voltage output was generated. Electrolysis voltage showed a positive influence on decolorization rate (DR) but also cause a rapid decrease in current efficiency (CE). Although a low COD removal rate of 38.5% was found in EC system, biodegradability of MR solution was significantly enhanced, where the averaged DR was 85.6%. Importantly, COD removal rate in EC-MFC integrated process had a 50.8% improvement compared with the single EC system. The results obtained here would be beneficial to provide a prospective alternative for azo dyes wastewater treatment and power production.
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Affiliation(s)
- Haiming Zou
- Department of Resource and Environment, Anhui Science and Technology University, Donghua Road, Fengyang 233100, China; Key Laboratory of Bioorganic Fertilizer Creation, Ministry of Agriculture, Bengbu 234000, China.
| | - Yan Wang
- Department of Resource and Environment, Anhui Science and Technology University, Donghua Road, Fengyang 233100, China; Key Laboratory of Bioorganic Fertilizer Creation, Ministry of Agriculture, Bengbu 234000, China
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12
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Electrocoagulation-Adsorption to Remove Anionic and Cationic Dyes from Aqueous Solution by PV-Energy. J CHEM-NY 2017. [DOI: 10.1155/2017/5184590] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The cationic dye malachite green (MG) and the anionic dye Remazol yellow (RY) were removed from aqueous solutions using electrocoagulation-adsorption processes. Batch and continuous electrocoagulation procedures were performed and compared. Carbonaceous materials obtained from industrial sewage sludge and commercial activated carbons were used to adsorb dyes from aqueous solutions in column systems with a 96–98% removal efficiency. The continuous electrocoagulation-adsorption system was more efficient for removing dyes than electrocoagulation alone. The thermodynamic parameters suggested the feasibility of the process and indicated that the adsorption was spontaneous and endothermic (ΔS=0.037 and −0.009 for MG and RY, resp.). The ΔG value further indicated that the adsorption process was spontaneous (−6.31 and −10.48; T=303 K). The kinetic electrocoagulation results and fixed-bed adsorption results were adequately described using a first-order model and a Bohart-Adams model, respectively. The adsorption capacities of the batch and column studies differed for each dye, and both adsorbent materials showed a high affinity for the cationic dye. Thus, the results presented in this work indicate that a continuous electrocoagulation-adsorption system can effectively remove this type of pollutant from water. The morphology and elements present in the sludge and adsorbents before and after dye adsorption were characterized using SEM-EDS and FT-IR.
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13
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Lee H, Park YK, Kim SJ, Kim BH, Yoon HS, Jung SC. Rapid degradation of methyl orange using hybrid advanced oxidation process and its synergistic effect. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2015.12.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Chou YC, Lo SL, Kuo J, Yeh CJ. Microwave-enhanced persulfate oxidation to treat mature landfill leachate. JOURNAL OF HAZARDOUS MATERIALS 2015; 284:83-91. [PMID: 25463221 DOI: 10.1016/j.jhazmat.2014.10.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/25/2014] [Accepted: 10/29/2014] [Indexed: 06/04/2023]
Abstract
Microwave oxidation process (MOP) was evaluated for treatment of landfill leachate. Kinetics of persulfate oxidation in MOP, effects of pH and persulfate doses on fates of derivative organic acids, and the energy cost of MOP were evaluated. The results showed that total organic carbon (TOC) removal of 79.4%, color removal of 88.4%, and UV254 removal of 77.1% were reached at MOP 550 W/85 °C within 30 min. The kinetics of oxidation by MOP followed the first-order reaction. For a given persulfate dose, the reaction rate increased with the microwave power setting (775 W>550 W>325 W>128 W) with reaction rate constants ranging from 10(-5) to 10(-2) min(-1). The adverse effects on reaction rates under higher microwave power settings and high persulfate doses are plausibly caused by excessive persulfate oxidation and self-scavenging termination of free radicals. During the MOP treatment, TOC/COD ratio dropped with time and an 86.7% reduction in TOC/COD ratio after 120 min at pH 7. Oxalic acid was the major derivative and its concentrations were higher under acidic conditions. Malic, lactic, and acetic acids were formed and soon degraded, and the solution pH has an insignificant effect on their fates. The energy cost of MOP (USD$6.03/m(3)) is essentially similar to that of conventional heating oxidation (CHO) (USD$6.10/m(3)).
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Affiliation(s)
- Yu-Chieh Chou
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC.
| | - Jeff Kuo
- Department of Civil and Environmental Engineering, California State University Fullerton, CA 92834, USA
| | - Chih-Jung Yeh
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC
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15
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Pan W, Zhang G, Zheng T, Wang P. Degradation of p-nitrophenol using CuO/Al2O3 as a Fenton-like catalyst under microwave irradiation. RSC Adv 2015. [DOI: 10.1039/c4ra14516j] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The CuO/Al2O3 was used as a heterogeneous catalyst for Fenton-like oxidation of PNP under microwave and the PNP removal was enhanced greatly by microwave.
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Affiliation(s)
- Weiqian Pan
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Guangshan Zhang
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Tong Zheng
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Peng Wang
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
- State Key Laboratory of Urban Water Resource and Environment
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Microwave-induced catalytic oxidation of malachite green under magnetic Cu-ferrites: New insight into the degradation mechanism and pathway. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.08.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Gole VL, Gogate PR. Degradation of brilliant green dye using combined treatment strategies based on different irradiations. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.07.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Ju Y, Wang X, Qiao J, Li G, Wu Y, Li Y, Zhang X, Xu Z, Qi J, Fang J, Dionysiou DD. Could microwave induced catalytic oxidation (MICO) process over CoFe2O4 effectively eliminate brilliant green in aqueous solution? JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 2:600-609. [PMID: 24220199 DOI: 10.1016/j.jhazmat.2013.10.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 10/07/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
In this study, we adopted the chemical co-precipitation (CP) method and sol-gel method followed by calcination at temperatures of 100-900°C for 12h to synthesize CoFe2O4 materials, which were further characterized by TEM, XRD and XPS techniques. The properties of CoFe2O4 materials were evaluated in a microwave (MW) induced catalytic oxidation (MICO) process for the elimination of brilliant green (BG). The results showed that: (1) the removal rates of BG gradually decreased over a series of CoFe2O4 materials prepared by CP method and calcinated with 100-700°C (except 900°C) for 12h within three reuse cycles; for comparison, no removal of BG was obtained over CoFe2O4 synthesized by sol-gel method and CoFe2O4-900 (CP); (2) no hydroxyl radicals were captured with salicylic acid used as molecular probe in the MICO process; (3) MW irradiation enhanced the release of residual NaOH within the microstructure of CoFe2O4 and further discolored BG, because BG is sensitive to pH; (4) granular activated carbon (GAC), an excellent MW-absorbing material possessing higher dielectric loss tangent compared to that of a series of CoFe2O4 materials, could not remove BG in suspensions at a higher efficiency, even if the loading amount was 20 g L(-1). Accordingly, MICO process over CoFe2O4 materials and GAC could not effectively eliminate BG in suspensions.
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Affiliation(s)
- Yongming Ju
- South China Institute of Environmental Science, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China.
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Chou YC, Lo SL, Kuo J, Yeh CJ. Derivative mechanisms of organic acids in microwave oxidation of landfill leachate. JOURNAL OF HAZARDOUS MATERIALS 2013; 254-255:293-300. [PMID: 23643953 DOI: 10.1016/j.jhazmat.2013.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Revised: 04/06/2013] [Accepted: 04/08/2013] [Indexed: 06/02/2023]
Abstract
This study compared formation and degradation behaviors of organic acids in landfill leachate under microwave oxidation process (MOP) and under conventional heating oxidation (CHO) and explored derivative mechanisms of organic acids in MOP. The results showed that formation and degradation behaviors of oxalic acid were very similar under CHO and MOP, in which its concentrations decreased in the temperature-raising period, then increased due to decomposition of TOC from 10 to 70 min, decreased due to persulfate oxidation from 70 to 130 min, and stayed the same afterwards. The pH values of the leachate solution dropped 0.51 and 0.65 pH units after MOP and CHO treatment, respectively. Oxalic acid was the dominant organic acid formed in MOP. The derivative mechanisms of organic acids were developed using the experimental results. Lactic acid was generated from decomposition of malic acid, and oxalic acid was formed from oxidation of its precursors. Acetic acid was formed and soon decomposed. Lactic acid had its maximum concentration with a persulfate dose of 0.5M, while lower or higher persulfate doses yielded few or no lactic acid in MOP.
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Affiliation(s)
- Yu-Chieh Chou
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC.
| | - Jeff Kuo
- Department of Civil and Environmental Engineering, California State University Fullerton, CA 92834, USA
| | - Chih-Jung Yeh
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC
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Chou YC, Lo SL, Kuo J, Yeh CJ. A study on microwave oxidation of landfill leachate--contributions of microwave-specific effects. JOURNAL OF HAZARDOUS MATERIALS 2013; 246-247:79-86. [PMID: 23287411 DOI: 10.1016/j.jhazmat.2012.11.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/24/2012] [Accepted: 11/26/2012] [Indexed: 06/01/2023]
Abstract
Microwave oxidation process (MOP) was evaluated for treatment of landfill leachate. The experimental parameters include pH, temperature, oxidant doses, microwave power setting, and irradiation time. The study explored the microwave-specific effects of the MOP. The contributions of pure thermal, persulfate oxidation and microwave irradiation on TOC removal were quantified. It was then found the combinations of them were usually synergistic in MOP except two of them were antagonistic (128 W/85°C/1M Na(2)S(2)O(8) and 128 W/85°C/2M Na(2)S(2)O(8)). At the highest temperature tested (85°C) in this study, microwave irradiation may cause generation and termination of oxidizing radicals at adverse rates. The study also found that persulfate decayed rapidly in either MOP or conventional heating oxidation (CHO) treatment of landfill leachate.
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Affiliation(s)
- Yu-Chieh Chou
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan, ROC
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Shi L, Wang X, Li N, Huai C, Liu J. Chlorine dioxide catalytic oxidation and online FTIR spectroscopic analysis of simulated o-chlorophenol wastewater. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0502-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Nadupalli S, Koorbanally N, Jonnalagadda SB. Chlorine Dioxide-Facilitated Oxidation of the Azo Dye Amaranth. J Phys Chem A 2011; 115:11682-8. [DOI: 10.1021/jp206175s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Nadupalli
- School of Chemistry, University of KwaZulu-Natal, Westville Campus, Chiltern Hills P. Bag 54001, Durban-4000, South Africa
| | - N. Koorbanally
- School of Chemistry, University of KwaZulu-Natal, Westville Campus, Chiltern Hills P. Bag 54001, Durban-4000, South Africa
| | - S. B. Jonnalagadda
- School of Chemistry, University of KwaZulu-Natal, Westville Campus, Chiltern Hills P. Bag 54001, Durban-4000, South Africa
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Wang HL, Dong J, Jiang WF. Study on the treatment of 2-sec-butyl-4,6-dinitrophenol (DNBP) wastewater by ClO2 in the presence of aluminum oxide as catalyst. JOURNAL OF HAZARDOUS MATERIALS 2010; 183:347-352. [PMID: 20685038 DOI: 10.1016/j.jhazmat.2010.07.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 07/09/2010] [Accepted: 07/09/2010] [Indexed: 05/29/2023]
Abstract
The chlorine dioxide (ClO(2)) oxidative degradation of 2-sec-butyl-4,6-dinitrophenol (DNBP) in aqueous solution was studied in detail using Al(2)O(3) as a heterogeneous catalyst. The operating parameters such as the ClO(2) concentration, catalyst dosage, initial DNBP concentration, reaction time and pH were evaluated. Compared with the conventional ClO(2) oxidation process without the catalyst, the ClO(2) catalytic oxidation system could significantly enhance the degradation efficiency. Under the optimal condition (DNBP concentration 39 mg L(-1), ClO(2) concentration 0.355 g L(-1), reaction time 60 min, catalyst dosage 10.7 g L(-1) and pH 4.66), degradation efficiency approached 99.1%. The catalyst was used at least 8 cycles without any appreciable loss of activity. The kinetic studies revealed that the ClO(2) catalytic oxidation degradation of DNBP followed pseudo-first-order kinetics with respect to DNBP concentration. The ClO(2) catalytic oxidation process was found to be very effective in the decolorization and COD(Cr) reduction of real wastewater from DNBP manufacturing. Thus, this study showed potential application of ClO(2) catalytic oxidation process in degradation of organic contaminants and industrial effluents.
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Affiliation(s)
- Hui-Long Wang
- Department of Chemistry, Dalian University of Technology, Dalian 116023, China
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Dong J, Wang H. A study on rapid acid chrome black (MB 7) spectrophotometric determination of ClO2 and catalytic degradation of 2,6-dinitro-p-cresol (DNPC) by ClO2. Front Chem Sci Eng 2010. [DOI: 10.1007/s11705-010-1003-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Shi L, Li N, Wang C, Wang C. Catalytic oxidation and spectroscopic analysis of simulated wastewater containing o-chlorophenol by using chlorine dioxide as oxidant. JOURNAL OF HAZARDOUS MATERIALS 2010; 178:1137-1140. [PMID: 20149526 DOI: 10.1016/j.jhazmat.2010.01.125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Revised: 01/21/2010] [Accepted: 01/21/2010] [Indexed: 05/28/2023]
Abstract
The activated carbon-MnO(2) catalyst has been prepared by the dipping-calcination method with activated carbon used as a carrier. The catalyst is used for catalyzing/degrading simulated o-chlorophenol wastewater with chlorine dioxide as oxidant. The COD removal efficiency by catalytic oxidation is 93.5% at the condition of wastewater's COD is 2085 mg/l, the pH value is 1.2, the dosage of chlorine dioxide is 1000 mg/l, the dosage of activated carbon-MnO(2) catalyst is 6g by reacting 60 min. The COD removal efficiency by catalytic oxidation is great than that of chemical oxidation. The catalytic activity of the catalyst only decreased a small amount in terms of COD removal efficiency after using 11 times. The COD removal efficiency is 80-90% during the continuity wastewater treatment experiment, which indicates that the wastewater treatment process is practical. The FTIR spectra indicate that the active ingredient of manganese dioxide is linked with activated carbon by chemical bond, not merely mechanical blending.
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Affiliation(s)
- Laishun Shi
- School of Chemistry and Chemical Engineering, South Campus, Shandong University, No. 17923 Jingshi Road, Jinan 250061, Shandong Province, PR China.
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