1
|
Teshager FM, Habtu NG, Mequanint K. Coupled adsorption-phytoremediation treatment of cellulose-reactive blue dye in a sustainable multi-step pilot-scale process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:8736-8750. [PMID: 38180650 DOI: 10.1007/s11356-023-31547-9] [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: 09/18/2023] [Accepted: 12/10/2023] [Indexed: 01/06/2024]
Abstract
A single-step dye removal strategy from wastewater is inadequate for concentrations above 100 mg/L. In order to address this limitation, the adsorption of high dye concentrations followed by phytoremediation is a potential approach for the treatment of dye-contaminated wastewater. This combined method utilizes physical adsorption and biological processes to remove dyes from wastewater. Herein, we investigated a pilot-scale multi-step cascaded process where batch adsorption and fixed-bed column adsorption were combined with phytoremediation to remove cellulose-reactive blue dye at 200 to 500 mg/L concentrations. The batch adsorption utilized low-cost water hyacinth root powder (WHRP) bioadsorbent having 670 m2/g surface area, whereas the fixed-bed column adsorption used sand having a surface area of 75 m2/g. The phytoremediation process utilized water hyacinth plants in a series of ponds. The effluent from one unit is fed to the next until the dye is removed to more than 98% for all concentrations considered in this study. Pilot-scale experimental data fitting to adsorption isotherms and kinetics were performed to gain insight into the pilot-scale adsorption mechanism. The fixed-bed sand column adsorption was conducted at different inlet dye concentrations, flow rates, and bed heights. The breakthrough curves were fit to the Thomas, Yoon-Nelson, and Bohart-Adams models. The effluent from the fixed-bed column was transferred to phytoremediation ponds, where complete dye removal was achieved. Overall, data collectively presented in this study demonstrated that the combined adsorption and phytoremediation approach offers a potential solution for the remediation of high dye concentration in wastewater, providing an effective and sustainable treatment option.
Collapse
Affiliation(s)
- Fitfety M Teshager
- Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON, N6A5B9, Canada
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
| | - Nigus G Habtu
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
| | - Kibret Mequanint
- Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON, N6A5B9, Canada.
| |
Collapse
|
2
|
Bai X, Mu S, Song B, Xie M. Combination of coagulation, Fe 0/H 2O 2 and ultra-high lime aluminium processes for the treatment of residual pollutants in biologically-treated landfill leachate. ENVIRONMENTAL TECHNOLOGY 2024; 45:667-680. [PMID: 36039399 DOI: 10.1080/09593330.2022.2119608] [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: 05/05/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Refractory substances (humus) and salts (chloride (Cl-) and sulphate (SO42-) ions) remain in the biotreated landfill leachate treatment, and it is necessary to carry out further treatments by a suitable method before discharge. In this study, the effect and operational mechanism of a combination of the coagulation Fe0/H2O2 and ultra-high lime aluminium (UHLA) processes for the treatment of refractory organic substances and salts in the leachate effluent of a semi-aerobic aged refuse biofilter (SAARB) were investigated. The results showed that polyferric sulphate is a relatively efficient coagulant comparing to FeCl3, Al2(SO)4, and polyaluminium chloride. The Fe0/H2O2 process further removed refractory organics from wastewater, achieving 49.8% of total organic carbon removed. Further treatment by the UHLA process was carried. The results demonstrated that the amount of precipitant, reaction duration, and temperature had a significant impact on the Cl- and SO42- removals. After three treatments, the cumulative SO42- and Cl- removal efficiencies were 98% and 80%, respectively. The SO42- and Cl- were removed in the form of precipitates such as UHLA, specific components of which included calcium alumina, Fremy's salt of calcium, aluminium chloride, and calcium hydroxide. Overall, the UV254, CN, Cl-, and SO42- removal efficiencies from the SAARB effluent were 94.08%, 98.73%, 79.96%, and 98.44%, respectively, for the combined coagulation Fe0/H2O2 and UHLA processes. Therefore, the combined processes could effectively remove residual pollutants in the biologically-treated landfill leachate, and the study provides a useful reference for the removal of refractory organic matter and salts in landfill leachate.HighlightsCoagulation-Fe0/H2O2-UHLA process is effective to SAARB effluent treatment.Refractory organics are substantially degraded by the coagulation-Fenton-like stage.Both Cl- and SO42- in SAARB effluent are greatly removed by UHLA process.
Collapse
Affiliation(s)
- Xue Bai
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Shiqi Mu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Bowen Song
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Mingde Xie
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| |
Collapse
|
3
|
Turki T, Hamdouni A, Enesca A. Fluoride Adsorption from Aqueous Solution by Modified Zeolite-Kinetic and Isotherm Studies. Molecules 2023; 28:molecules28104076. [PMID: 37241817 DOI: 10.3390/molecules28104076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/02/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Fluorine is a very common element in the Earth's crust and is present in the air, food, and in natural waters. It never meets in the free state in nature due to its high reactivity, and it comes in the form of fluorides. Depending on the concentration of fluorine absorbed, it may be beneficial or harmful to human health. Similar to any trace element, fluoride ion is beneficial for the human body at low levels, but as soon as its concentration becomes too high, it is toxic, inducing dental and bone fluorosis. The lowering of fluoride concentrations that exceed the recommended standards in drinking water is practiced in various ways around the world. The adsorption process has been classified as one of the most efficient methods for the removal of fluoride from water as it is environmentally friendly, easy to operate, and cost-effective. The present study deals with fluoride ion adsorption on modified zeolite. There are several influential parameters, such as zeolite particle size, stirring rate, solution pH, initial concentration of fluoride, contact time, and solution temperature. The maximum removal efficiency of the modified zeolite adsorbent was 94% at 5 mg/L fluoride initial concentration, pH 6.3, and 0.5 g modified zeolite mass. The adsorption rate increases accordingly with increases in the stirring rate and pH value and decreases when the initial fluoride concentration is increased. The evaluation was enhanced by the study of adsorption isotherms using the Langmuir and Freundlich models. The Langmuir isotherm corresponds with the experimental results of the fluoride ions adsorption with a correlation value of 0.994. The kinetic analysis results of the fluoride ions adsorption on modified zeolite allowed us to demonstrate that the process primarily follows a pseudo-second-order and then, in the next step, follows a pseudo-first-order model. Thermodynamic parameters were calculated, and the ΔG° value is found to be in the range of -0.266 kJ/mol up to 1.613 kJ/mol amidst an increase in temperature from 298.2 to 331.7 K. The negative values of the free enthalpy ΔG° mean that the adsorption of fluoride ions on the modified zeolite is spontaneous, and the positive value of the enthalpy ∆H° shows that the adsorption process is endothermic. The ∆S° values of entropy indicate the fluoride adsorption randomness characteristics at the zeolite-solution interface.
Collapse
Affiliation(s)
- Thouraya Turki
- Natural Water Treatment Laboratory, Water Researches and Technologies Center (CERTE), Technopark of Borj-Cedria, P.O. Box 273, Soliman 8020, Tunisia
| | - Abdelkader Hamdouni
- High Institute of Sciences and Technology of Environment of Borj Cedria, University of Carthage, Carthage 1054, Tunisia
| | - Alexandru Enesca
- Product Design, Mechatronics and Environment Department, Transilvania University of Brasov, Eroilor 29 Street, 500036 Brasov, Romania
| |
Collapse
|
4
|
Igwegbe CA, Obi CC, Ohale PE, Ahmadi S, Onukwuli OD, Nwabanne JT, Białowiec A. Modelling and optimisation of electrocoagulation/flocculation recovery of effluent from land-based aquaculture by artificial intelligence (AI) approaches. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27387-2. [PMID: 37160520 DOI: 10.1007/s11356-023-27387-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 04/28/2023] [Indexed: 05/11/2023]
Abstract
This study examined the modelling and optimisation of the electrocoagulation-flocculation (ECF) recovery of aquaculture effluent (AQE) using aluminium electrodes. The response surface methodology (RSM), artificial neural network (ANN), and adaptive neuro-fuzzy inference system (ANFIS) were used for the modelling, while the optimisation tools were the numerical RSM and genetic algorithm (GA). Furthermore, the kinetics of the ECF process was studied to provide insight into the mechanism governing the ECF of AQE. The experimental design was performed using the central composite design (CCD) of the RSM. The ANFIS modelling was accomplished via the Grid Partition (GP) of the data set, while the ANN used the multi-layer perceptron (MLP) based feed-forward system. Statistically, the prediction accuracy of the models followed the order: ANFIS (R2: 0.9990), ANN (R2: 0.9807), and RSM (R2: 0.9790). The process optimisation gave optimal turbidity (TD) removal efficiencies of 98.98, 97.81, and 96.01% for ANFIS-GA, ANN-GA, and RSM optimisation techniques, respectively. The ANFIS-GA gave the best optimization result at optimum conditions of pH 4, current intensity (3 A), electrolysis time (7.2 min), settling time (23 min), and temperature (43.8 °C). In the kinetics study, the experimental data was analysed using pseudo-first-order (0.8787), pseudo-second-order (0.9395), and Elovich (R2: 0.9979) kinetic models; the Elovich model gave the best correlation with the experimental data showing that the process is governed by electrostatic interaction mechanism. This study effectively demonstrated that ECF recovery of AQE can effectively be modelled using RSM, ANN, and ANFIS and be optimised using RSM, ANN-GA, and ANFIS-GA techniques, and the order of performance is ANFIS > ANN > RSM and ANFIS-GA > ANN-GA > RSM, respectively.
Collapse
Affiliation(s)
- Chinenye Adaobi Igwegbe
- Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria.
- Department of Applied Bioeconomy, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland.
| | - Christopher Chiedozie Obi
- Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria
- Department of Polymer/Textile Engineering, Nnamdi Azikiwe University, Awka, Nigeria
| | | | - Shabnam Ahmadi
- Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | | | | | - Andrzej Białowiec
- Department of Applied Bioeconomy, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| |
Collapse
|
5
|
Elhadeuf K, Bougdah N, Chikhi M, Ben Djaballah C, Balaska F. Optimization of textile wastewater treatment by electrocoagulation-microfiltration using recycled electrodes and Box-Behnken design. REACTION KINETICS MECHANISMS AND CATALYSIS 2023. [DOI: 10.1007/s11144-023-02395-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
6
|
Belli TJ, Bassin JP, de Sousa Vidal CM, Hassemer MEN, Rodrigues C, Lapolli FR. Effects of solid retention time and exposure mode to electric current on Remazol Brilliant Violet removal in an electro-membrane bioreactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:58412-58427. [PMID: 36991202 DOI: 10.1007/s11356-023-26593-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 03/18/2023] [Indexed: 05/10/2023]
Abstract
The performance of an electrochemically assisted anoxic-oxic membrane bioreactor (A/O-eMBR) was assessed as an alternative for azo dye (Remazol Brilhant Violet (RBV)) removal from simulated textile wastewater. The A/O-eMBR was operated under three experimental conditions (runs I, II, and III), in which different solids retention time (SRT) (45 and 20 d) and exposure mode to electric current (6'ON/30'OFF and 6'ON/12'OFF) were assessed. The reactor exhibited excellent decolorization performance for all runs, with average dye removal efficiency ranging from 94.3 to 98.2%. Activity batch assays showed that the dye removal rate (DRR) decreased from 16.8 to 10.2 mg RBV L-1 h-1 when the SRT was reduced from 45 to 20 d, likely attributed to the lower biomass content under lower sludge age. At the electric current exposure mode of 6' ON/12'OFF, a more substantial decrease of DRR to 1.5 mg RBV L-1 h-1 was noticed, suggesting a possible inhibitory effect on dye removal via biodegradation. By reducing the SRT to 20 d, a worse mixed liquor filterability condition was observed, with a membrane fouling rate (MFR) of 0.979 kPa d-1. In contrast, using the electric current exposure mode of 6'ON/12'OFF resulted in lower membrane fouling propensity, with an MFR of 0.333 kPa d-1. A more attractive cost-benefit ratio for dye removal was obtained using the exposure mode of 6'ON/30'OFF, for which the energy demand was estimated at 21.9-22.6 kWh kg dye-1 removed, almost two times lower than that observed for the mode of 6'ON/12'OFF.
Collapse
Affiliation(s)
- Tiago José Belli
- Civil Engineering Department, Santa Catarina State University, Ibirama, SC, ZIP 89140-000, Brazil.
| | - João Paulo Bassin
- Chemical Engineering Program, COPPE, Federal University of Rio de Janeiro, P.O. Box 68502, Rio de Janeiro, RJ, 21941-972, Brazil
| | - Carlos Magno de Sousa Vidal
- Environmental and Sanitary Engineering Department, State University of Centro-Oeste (UNICENTRO), PR 153, Km 07, Riozinho, P.O. Box 21, Irati, PR, Brazil
| | - Maria Eliza Nagel Hassemer
- Environmental Engineering Program, PPGEA, Federal University of Santa Catarina, P.O. Box 476, Florianópolis, SC, ZIP 88040-900, Brazil
| | - Caroline Rodrigues
- Environmental Engineering Program, PPGEA, Federal University of Santa Catarina, P.O. Box 476, Florianópolis, SC, ZIP 88040-900, Brazil
| | - Flávio Rubens Lapolli
- Environmental Engineering Program, PPGEA, Federal University of Santa Catarina, P.O. Box 476, Florianópolis, SC, ZIP 88040-900, Brazil
| |
Collapse
|
7
|
Pacheco HGJ, Elguera NY, Ancco M, Castro AELF, Meza MEB, Almeida VC. Combined coagulation-electrocoagulation process using biocoagulant from the Opuntia ficus-indica for treatment of cheese whey wastewater. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:491. [PMID: 36943586 DOI: 10.1007/s10661-023-11095-y] [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: 10/18/2022] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
This work reports a combined coagulation-electrocoagulation process using a biocoagulant from the Opuntia ficus-indica for treatment of cheese whey wastewater. The process parameters as pH, biocoagulant dosage, and current density were evaluated from the chemometric tools. A Box-Behnken design was used, having as responses the removal percentages of turbidity and chemical oxygen demand (COD). The results showed that for the studied variable ranges, linear models were obtained and the pH was parameter more significant for treatment proposed. The pH showed synergic effect with the investigated parameters, while the biocoagulant dosage and density current showed antagonistic effects. The desirability function was used to optimization of process, and suggested values were pH 10.0, biocoagulant dosage of 4.4 g L-1, and current density of 31.5 mA cm-2, which showed removals of turbidity and COD of 98.9 and 83.8%, respectively.
Collapse
Affiliation(s)
- Hugo G J Pacheco
- Instituto de Investigación e Innovación en Energías Renovables y Medio Ambiente, Lima, Peru
- Universidad Católica de Santa María, Urb. San José, San Jose s/n, Yanahuara, Arequipa, Peru
| | - Naysha Y Elguera
- Instituto de Investigación e Innovación en Energías Renovables y Medio Ambiente, Lima, Peru
| | - Midwar Ancco
- Instituto de Investigación e Innovación en Energías Renovables y Medio Ambiente, Lima, Peru
| | - Antonio E L F Castro
- Instituto de Investigación e Innovación en Energías Renovables y Medio Ambiente, Lima, Peru
| | - Maria E B Meza
- Universidad Católica de Santa María, Urb. San José, San Jose s/n, Yanahuara, Arequipa, Peru
| | - Vitor C Almeida
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, Maringá , Paraná, 87020-900, Brazil.
| |
Collapse
|
8
|
Alali AF, Almojil SF, Almohana AI, Anqi AE, Rajhi AA, Alamri S, Dhahad HA. Hydroxyapatite@Mn-Fe composite as a reusable sorbent for removal of Nile blue dye and Cr(VI) from polluted water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:18419-18437. [PMID: 36210408 DOI: 10.1007/s11356-022-22821-3] [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: 04/25/2022] [Accepted: 08/27/2022] [Indexed: 06/16/2023]
Abstract
In this study, hydroxyapatite@Mn-Fe composite was used as a novel adsorbent to eliminate Nile blue (NB) dye and hexavalent chromium ion (Cr(VI)) from aqueous media. Different analyses such as FTIR, Map, SEM, EDX, BET, and XRD were used to study the characteristics of the composite. The highest sorption efficiencies of Cr(VI) and NB at pH 2 and 10 were 97.63% and 98.83%, respectively, which are significant values. Equilibrium and kinetic studies of the sorption process showed that the Freundlich isotherm model and pseudo-second-order kinetic model can better describe the equilibrium and kinetic behavior of the sorption process. According to the Langmuir model, the maximum sorption capacities of NB dye and Cr(VI) ion using the hydroxyapatite@Mn-Fe composite were 0.259 and 0.938 mmol/g, respectively. Also, the results of the thermodynamic study showed that the sorption process is favorable (ΔS° = - 34.2 kJ/mol·K for Cr(VI) and - 144.6 kJ/mol·K for NB), spontaneous (ΔG° < 0), and exothermic (ΔH° = - 27.99 kJ/mol for Cr(VI) and - 64.2 kJ/mol for NB). Moreover, the desorption process of both contaminants using the hydroxyapatite@Mn-Fe composite showed that the H2SO4 solution with a concentration of 3 mol/L can remove both contaminants separately with the highest efficiency. Furthermore, the reusability study indicated that the composite can be used in five reuse cycles without significant decrease in its efficiency. Besides, the composite was able to eliminate color, turbidity, COD, and BOD5 from the textile wastewater with removal efficiencies of 93.06, 81.61, 76.05, and 71.88%, respectively. To the best of our knowledge, hydroxyapatite@Mn-Fe composite was synthesized and used for the first time to remove Cr(VI) ions and NB dye. In general, the aforementioned composite is recommended for industrial wastewater treatment.
Collapse
Affiliation(s)
- Abdulrhman Fahmi Alali
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia
| | - Sattam Fahad Almojil
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia
| | - Abdulaziz Ibrahim Almohana
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia
| | - Ali E Anqi
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
| | - Ali A Rajhi
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
| | - Sagr Alamri
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
| | - Hayder A Dhahad
- Mechanical Engineering Department, University of Technology, Baghdad, Iraq.
| |
Collapse
|
9
|
Li Y, Zhu T, Yang H, Nong G. Characteristics of calcium lignin from pulping waste liquor and application for the treatment middle-stage wastewater of paper making. ENVIRONMENTAL TECHNOLOGY 2023; 44:695-707. [PMID: 34617872 DOI: 10.1080/09593330.2021.1982021] [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: 07/09/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
In order to obtain a lignin-based adsorbent with low cost, simple operation and no further modification, a calcium lignin adsorbent was prepared from chemical mechanical pulping (CMP) waste liquor by directly calcification from lime. The calcium lignin was characterized by BET, SEM, TEM, FT-IR and solid-state NMR analyses. The results showed that the molecular structure of the calcium lignin particles did not change when compared to sodium lignin, the formation mechanism of calcium lignin was revealed. The initial COD and lignin contents of CMP waste liquid were 54858 mg/L and 24.39 g/L, the conversion rate of lignin can reach 71.36% when was deal with lime. Thus, most of the lignin resources in the waste liquid were recovered. The middle-stage wastewater (MSWW) of pulping and papermaking was dealt with calcium lignin, the COD removal rate was up to 85.83%. The adsorption isotherms and kinetics were well fitted by the Langmuir model and pseudo-second-order kinetic model, respectively. Lime was regenerated from the used calcium lignin with high-temperature calcination, the conversion rate of calcium ions can reach 83.56%. Overall, the calcium lignin prepared by the one-step method exhibited great potential for effectively removing COD from middle-stage wastewater.
Collapse
Affiliation(s)
- Yijing Li
- School of Light Industry and Food Engineering, Guangxi University, Nanning, People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, People's Republic of China
| | - Tian Zhu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, People's Republic of China
| | - Hao Yang
- School of Resources, Environment and Materials, Guangxi University, Nanning, People's Republic of China
| | - Guangzai Nong
- School of Light Industry and Food Engineering, Guangxi University, Nanning, People's Republic of China
- School of Resources, Environment and Materials, Guangxi University, Nanning, People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, People's Republic of China
| |
Collapse
|
10
|
Effect of additional Fe 2+ salt on electrocoagulation process for the degradation of methyl orange dye: An optimization and kinetic study. Heliyon 2022; 8:e10176. [PMID: 36033268 PMCID: PMC9399484 DOI: 10.1016/j.heliyon.2022.e10176] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/29/2022] [Accepted: 07/29/2022] [Indexed: 12/07/2022] Open
Abstract
The wastewater generated from textile industries is highly colored and contains dyes including azo dyes, which are toxic to human and water-living organisms. The treatment of these azo dyes using conventional treatment techniques is challenging due to their recalcitrant properties. In the current study, the effect of additional Fe2+ on electrocoagulation (EC) using Fe electrodes has been studied for the removal of methyl orange (MO) azo dye. pH between 4-5 was found to be optimum for EC and treatment efficiency decreased with increasing dye concentrations. With the addition of Fe2+ salt, dye removal for a certain concentration was increased with the increase of current density and Fe2+ up to a certain limit and after that, the removal efficiency decreased. The COD, color and dye removals were 88.5%, 93.1% and 100%, respectively, for EC of 200 mg.L−1 dye solution using only 0.20 mmol.L−1 Fe2+ for 0.40 mA cm−2 current density, whereas for EC, the respective removal efficiencies were 76.7%, 63.4% and 82.4% for 32 min. The respective operating cost for EC was $768 kg−1 removed dye ($0.342 m−3), whereas, for EC with additional Fe2+ salt, it was $350 kg−1 removed dye ($0.189 m−3). The kinetic results revealed that the first-order kinetic model was fitted best for EC, whereas the second-order kinetic model was best fitted for Fe2+ added EC. For real textile wastewater, 57.6% COD removal was obtained for 0.15 mmol.L−1 Fe2+ added EC compared to 27.8% COD removal for EC for 32 min. Based on the study we can conclude that Fe2+ assisted EC can be used for effective treatment of textile wastewater containing toxic compounds like azo dyes. EC represents limiting treatment performance for higher contaminant concentrations. 0.20 mmol.L−1 Fe2+ salt enhances the EC treatment performance of MO dye to 100%. EC followed first-order kinetic model, whereas Fe2+ added EC followed second-order kinetic model. Operating cost was reduced to $0.327 m−3 from $0.598 m−3 for EC with additional Fe2+. 58% COD was removed for 0.15 mmol.L−1 Fe2+ added EC for real textile wastewater.
Collapse
|
11
|
Gasmi A, Ibrahimi S, Elboughdiri N, Tekaya MA, Ghernaout D, Hannachi A, Mesloub A, Ayadi B, Kolsi L. Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation. ACS OMEGA 2022; 7:22456-22476. [PMID: 35811923 PMCID: PMC9260942 DOI: 10.1021/acsomega.2c01652] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 06/03/2022] [Indexed: 05/23/2023]
Abstract
Pollutants derived from real textile wastewater present a high environmental risk. This work involves the study of the removal of chemical oxygen demand (COD), color, and turbidity from Tunisian real textile wastewater by two different water treatment technologies: chemical coagulation (CC) and electrocoagulation (EC). A comparative study between these two methods was conducted based on the separation performance and operating cost (OC). The effects of different operational parameters including electrolysis time (t), voltage, and pH for EC and the coagulant concentration, initial pH, and time of slow mixing (t sm) for CC were studied using response surface methodology. The developed quadratic models for the responses were in good agreement with the experimental data. The experiments proved the efficiency of both chemical and electrochemical techniques for the treatment of textile effluent. Indeed, by using EC, the reduction efficiencies of COD, color, and turbidity were 63.05, 99.07, and 96.31%, respectively, under optimal conditions (pH 9, t = 36.26 min, and voltage 4 V). For CC treatment, the achieved removal efficiencies of COD, color, and turbidity were 54.02, 96.21, and 93.7%, respectively, at pH 8.57, a coagulant concentration of 204.75 mg/L, and a t sm of 28.41 min as optimal operating conditions. The OC obtained for EC and CC was about 0.47 and 0.2 USD/m3, respectively. Even if the OC of the EC process was higher as compared to the CC process, the treated water obtained by EC meets the Tunisian Standards (NT 106.03 and NT 09-14) for textile wastewater discharge into the environment and demonstrates a high potential for its reuse in various industrial activities. EC technology can be integrated into a wastewater management system that ensures a zero liquid discharge of wastewater into the environment.
Collapse
Affiliation(s)
- Aicha Gasmi
- Laboratory
of Engineering Processes and Industrial Systems, Chemical Engineering
Department, National School of Engineers of Gabes, University of Gabes, Street Omar Ibn El-Khattab, Gabes 6029, Tunisia
| | - Soumaya Ibrahimi
- Mechanical
Modeling, Energy and Materials Unit Research (MEM), National School of Engineering of Gabes, Gabes 6029, Tunisia
| | - Noureddine Elboughdiri
- Chemical
Engineering Department, College of Engineering, University of Ha′il, P.O. Box
2440, Ha′il 81441, Saudi Arabia
- Chemical
Engineering Process Department, National School of Engineers Gabes, University of Gabes, Gabes 6029, Tunisia
| | - Mohamed Aymen Tekaya
- Laboratory
of Engineering Processes and Industrial Systems, Chemical Engineering
Department, National School of Engineers of Gabes, University of Gabes, Street Omar Ibn El-Khattab, Gabes 6029, Tunisia
| | - Djamel Ghernaout
- Chemical
Engineering Department, College of Engineering, University of Ha′il, P.O. Box
2440, Ha′il 81441, Saudi Arabia
- Chemical
Engineering Department, Faculty of Engineering, University of Blida, P.O. Box 270, Blida 09000, Algeria
| | - Ahmed Hannachi
- Laboratory
of Engineering Processes and Industrial Systems, Chemical Engineering
Department, National School of Engineers of Gabes, University of Gabes, Street Omar Ibn El-Khattab, Gabes 6029, Tunisia
| | - Abdelhakim Mesloub
- Department
of Architectural Engineering, College of Engineering, University of Ha′il, P.O. Box
2440, Ha′il 81441, Saudi Arabia
| | - Badreddine Ayadi
- Department
of Mechanical Engineering, College of Engineering, University of Ha′il, P.O. Box
2440, Ha′il 81441, Saudi Arabia
| | - Lioua Kolsi
- Department
of Mechanical Engineering, College of Engineering, University of Ha′il, P.O. Box
2440, Ha′il 81441, Saudi Arabia
| |
Collapse
|
12
|
Moyo S, Makhanya BP, Zwane PE. Use of bacterial isolates in the treatment of textile dye wastewater: A review. Heliyon 2022; 8:e09632. [PMID: 35677403 PMCID: PMC9168152 DOI: 10.1016/j.heliyon.2022.e09632] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/25/2021] [Accepted: 05/26/2022] [Indexed: 01/15/2023] Open
Abstract
The textile industry uses large amounts of dyes like reactive, azo, anthraquinone, and triphenylmethane to colour textiles. Dyes that are not used up during the colouration process usually end up in water bodies as waste leading to the pollution of the water bodies. This makes the industry to be one of the major contributors to water pollution in the world. Bacterial agents isolated from various sources like dye contaminated soil and textile wastewater have shown to have the ability to effectively decolourise and degrade these dye pollutants leading to improved water quality. This review discusses bacterial isolates that have been used successfully to degrade and decolourise textile dyes, their mode of dye removal as well as the factors that affect their dye degradation ability. It further looks at the latest wastewater treatment technologies that incorporate bacterial microorganisms to treat dye wastewater. Bacterial isolates offer environmentally friendly solution to dye degradation. Pure and mixed bacterial cultures can remove textile dyes in optimised conditions. Dyes are removed through biosorption or biodegradation mechanisms. Latest technologies provide more effective dye removal options.
Collapse
Affiliation(s)
- Senelisile Moyo
- Department of Textile and Apparel Design, University of Eswatini, Eswatini
- Corresponding author.
| | | | - Pinkie E. Zwane
- University of Eswatini, Private Bag 4, Kwaluseni Campus, Eswatini
| |
Collapse
|
13
|
Bogoni NJ, Schut CR, Merck JZ, Duarte J, Menezes CM, Giovanela M, Zeni MA, Marangoni C, Crespo JS. Preparation and characterization of polysulfone-polyurethane membranes for recovery of simulated wastewater from industrial textile processes. ENVIRONMENTAL TECHNOLOGY 2022; 43:2099-2112. [PMID: 33332251 DOI: 10.1080/09593330.2020.1866086] [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: 09/29/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Techniques using membranes for the treatment of wastewaters usually promote higher quality of treated water when compared to other processes. Among them, pervaporation has advantages in terms of selectivity in addition to low working pressure, which can prevent clogging problems. Polysulfone and polyurethane have complementary characteristics and are interesting in the context of membranes for industrial applications. In this sense, the aim of this work was to prepare and characterize polysulfone/polyurethane-based membranes and tested them with a simulated wastewater containing the reactive black dye and sodium chloride by pervaporation. In their manufacture, thermal treatment (at 60°C) and photo-radiation treatment (using ultraviolet light) were also applied. The characterizations were performed using different analytical tools. In general, it was possible to verify that all membranes have a dense layer. The thermal analysis allowed to define that the indicated working temperature is below 50°C. With respect to the simulated wastewater treatment, all membranes reached 100% selectivity. Concerning the saline solution, the mean selectivity was around 98.5%. Moreover, the permeate flow values were within the range presented by commercial membranes ranging from 1.6 to 2.4 kg m-2 h-1. Although for the photoirradiated membranes the photo-graft reaction has occurred, among all membranes, the blend without any treatment stood out from the others, presenting the highest permeate flow of the simulated wastewater. Finally, the results reveal that these membranes are capable of recovering wastewater from textile processes, in addition to having the potential to remove salts from water through the pervaporation process.Highlights Polysulfone/polyurethane-based membranes were not yet evaluated for wastewater recovery.Modifications in the membrane characteristics promoted variations in the permeate flow.Changes in physical-chemical properties of membrane as a result of a photoinitiation reaction.Removal efficiency achieved was 100% for reactive black dye and 98.5% for sodium chloride.A new way of performing pervaporation on the recovery of aqueous solutions.
Collapse
Affiliation(s)
- N J Bogoni
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
- Department of Textile Engineering, Federal University of Santa Catarina, Blumenau, Brazil
| | - C R Schut
- Department of Textile Engineering, Federal University of Santa Catarina, Blumenau, Brazil
| | - J Z Merck
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - J Duarte
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - C M Menezes
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
- Department of Textile Engineering, Federal University of Santa Catarina, Blumenau, Brazil
| | - M Giovanela
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - M A Zeni
- Chemistry of Materials Department, RS Federal Institute, Farroupilha, Brazil
| | - C Marangoni
- Department of Textile Engineering, Federal University of Santa Catarina, Blumenau, Brazil
| | - J S Crespo
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| |
Collapse
|
14
|
Atef R, Aboeleneen NM, AbdelMonem NM. Preparation and characterization of low-cost nano-particle material using pomegranate peels for brilliant green removal. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:36-46. [PMID: 35369820 DOI: 10.1080/15226514.2022.2056133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A low-cost nano-particle material was successfully prepared using waste pomegranate peels. Batch adsorption experiments were carried out to investigate the effect of different operating conditions on the removal of brilliant green (BG) dye from an aqueous solution. SEM images of pomegranate peels nano-particles (PPNP) declared roughness of the surfaces and TEM images indicated a spheroid shape with an average particle size of 37 nm. The specific surface area of the PPNP was 354.46 m2/g and the particle size had a mean diameter of 613.4 nm. The active nano-particle suspension showed a net negative charge (-29 mV) at natural pH. The XRD pattern of PPNP displayed an average crystallite size of 13.50 nm and EDS analysis shows that the PPNP consists of 83% carbon. The experimental work showed that the removal of BG had optimum removal efficiency at 20 min, 0.3 g adsorbent mass, 25 °C, and pH 8. The kinetic data can be described well with the pseudo-second-order model and the isotherm data was found to fit the Dubinin model. The thermodynamic study proved that BG adsorption on PPNP was physisorption (ΔG = -5.949 kJ/mol) and spontaneous at low temperature (ΔH = -17.193 kJ/mol, ΔS = -0.0382 kJ/mol. k)This study used an agriculture waste (pomegranate peels) to prepare an environmentally friendly and low-cost adsorbent within the nano-scale by thermal activation. The nano-particles prepared were shown to be a promising adsorbent, demonstrating high surface area and well-developed porosity. The prepared adsorbent will have a great impact on wastewater treatment technology and possible applications at a large scale.
Collapse
Affiliation(s)
- Riham Atef
- Chemical Engineering Department, The High Institute of Engineering and Technology, New Damietta, Damietta Egypt
| | - N M Aboeleneen
- Faculty of Engineering, Chemical Engineering Department, Cairo University, Cairo, Egypt
| | - Nabil M AbdelMonem
- Faculty of Engineering, Chemical Engineering Department, Cairo University, Cairo, Egypt
| |
Collapse
|
15
|
Hendaoui K, Trabelsi-Ayadi M, Ayari F. Optimization of continuous electrocoagulation-adsorption combined process for the treatment of a textile effluent. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2020.10.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
16
|
Ma Q, Yan C, Lv W, Mei Y, Peng H, Du J, Zheng B, Guo Y. Coexisting Chloride Ion for Boosting the Photoelectrocatalytic Degradation Efficiency of Organic Dyes. Catal Letters 2022. [DOI: 10.1007/s10562-022-03978-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
17
|
Yu W, Xu J, Li J, Zhu S, Xie J, Zhou Z, Wang B, Li J, Chen K. Hollow Structured Kapok Fiber-Based Hierarchical Porous Biocarbons for Ultrahigh Adsorption of Organic Dyes. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Weiqi Yu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Jun Xu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
- Qingyuan Huayuan Institute of Science and Technology Collaborative Innovation Co., Ltd., Qingyuan 511500, P. R. China
| | - Jinpeng Li
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Shiyun Zhu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Junxian Xie
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Ziyong Zhou
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Bin Wang
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Jun Li
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Kefu Chen
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| |
Collapse
|
18
|
Hamidi F, Dehghani MH, Kasraee M, Salari M, Shiri L, Mahvi AH. Acid red 18 removal from aqueous solution by nanocrystalline granular ferric hydroxide (GFH); optimization by response surface methodology & genetic-algorithm. Sci Rep 2022; 12:4761. [PMID: 35306520 PMCID: PMC8934340 DOI: 10.1038/s41598-022-08769-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 03/10/2022] [Indexed: 12/07/2022] Open
Abstract
The need for fresh water is more than before by population growth, and industrial development have affected the quality of water supplies, one of the important reason for water contamination is synthetic dyes and their extensive use in industries. Adsorption has been considered as a common methods for dye removal from waters. In this study, Acid Red18 removal in batch mode by using Granular Ferric Hydroxide (GFH) was investigated. The GFH characterized by XRD, FESEM and FTIR analysis. Experiments were designed using RSM-CCD method. The maximum removal efficiency was obtained 78.59% at pH = 5, GFH dosage = 2 g/l, AR18 concentration = 77.5 mg/l and 85 min of contact time. Optimization with RSM and Genetic Algorithm carried out and is similar together. The non-linear adsorption Isotherm and kinetic fitted with Freundlich (R2 = 0.978) and pseudo-second-order (R2 = 0.989) models, respectively. Thermodynamic studies showed that the AR18 adsorption is endothermic process and GFH nature was found spontaneous.
Collapse
|
19
|
Sharma G, Khosla A, Kumar A, Kaushal N, Sharma S, Naushad M, Vo DVN, Iqbal J, Stadler FJ. A comprehensive review on the removal of noxious pollutants using carrageenan based advanced adsorbents. CHEMOSPHERE 2022; 289:133100. [PMID: 34843837 DOI: 10.1016/j.chemosphere.2021.133100] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/17/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Rapid industrial development is associated with high discharge of toxic pollutants into the environment. The industries discharge their wastewater containing organic pollutants directly into the water system without treating them that has posed many serious threats to environmental protection. The use of bioadsorbents for the removal of such toxic pollutants from the waste water due to its simple synthesis, easy operation, effectiveness, and economic viability have emerged a new dimension in the wastewater treatment approaches. Various adsorbents have been prepared to examine their adsorption capacity against different adsorbates, but, to attain sustainability, biocompatibility, and biodegradation, bio-adsorbents have been found to won the battle. Seaweed derived polysaccharide; Carrageenan (CR) has been proven to be an excellent adsorbent for the wastewater treatment. It has been successfully modified with various components to form CR based-magnetic composites, hydrogels, nanoparticle modified CR composites and many others to enrich and diversify its properties. In this review, we have explained the adsorption behaviour of various carrageenan based adsorbents for the removal of different dyes. The influence of various parameters such as the effect of initial concentration, adsorbent dosage, contact time, pH, temperature, and ion concentration on dye adsorption is well explained. This paper also summarizes the structure, morphology, swelling ability, and thermal stability of carrageenan. The data also expounds on the adsorption capacity, kinetic model, isotherm model, and nature of the adsorption process. Different types of solvents are used for the regeneration and reusability of carrageenan adsorbents and their regeneration studies and desorption efficiency is well-explained. The adsorption mechanism of dyes onto carrageenan based adsorbents has been well described in this review. This review provides a deep insight about the use of carrageenan based adsorbents for the wastewater treatment.
Collapse
Affiliation(s)
- Gaurav Sharma
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518060, PR China; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India.
| | - Atul Khosla
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - Amit Kumar
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518060, PR China; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - Nikhil Kaushal
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - Shweta Sharma
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - M Naushad
- Advanced Materials Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia; Yonsei Frontier Lab, Yonsei University, Seoul, South Korea
| | - Dai-Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam
| | - Jibran Iqbal
- College of Natural and Health Sciences, Zayed University, P.O. Box 144534, Abu Dhabi, United Arab Emirates
| | - Florian J Stadler
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518060, PR China
| |
Collapse
|
20
|
Development of Integrated Electrocoagulation-Sedimentation (IECS) in Continuous Mode for Turbidity and Color Removal. CHEMENGINEERING 2022. [DOI: 10.3390/chemengineering6010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The present work focused on the development and evaluation of a compact electrocoagulation (EC) reactor, combined between EC and clarifier processes in continuous modes for decolorization and turbidity removal, named the integrated electrocoagulation-sedimentation reactor (IECS). The experiments were firstly conducted in the four-liter batch column in order to optimize the EC configuration and operation condition. The removal kinetics were also investigated and predicted for kinetic correlations. After various optimization steps, the IECS reactor was conducted, consisting of EC and clarifier compartments. Liquid flow pattern in EC compartment was examined through resident time distribution technique for defining the number of EC units and divided baffles. In summary, four units of EC were placed in the EC compartment of the IECS reactor with 90% in the width of three baffles. Each EC unit had two pairs of aluminum electrode plats in monopolar arrangement with a 1.5 cm gap and required a current density of 13.5 mA/cm2. For the clarifier compartment, it was mainly designed based on the batch settling test for separating the precipitated particles. The treatment performance of the IECS reactor was tested at different liquid flows in order to reduce the pollutant to a certain level. For the individual condition, liquid flow rates of 3 and 1 L/min were defined for turbidity and color, respectively. If both pollutants are presented simultaneously, a liquid flow rate of 1–2 L/min can be used for decreasing turbidity from 250 to <20 NTU and color from 6000 to <300 ADMI.
Collapse
|
21
|
Abstract
Water serves as an indispensable part of human life and production. On account of the overexploitation of traditional water sources, the demand for wastewater recycling is expanding rapidly. As a promising water treatment process, membrane distillation (MD) has been utilized in various wastewater treatments, such as desalination brine, textile wastewater, radioactive wastewater, and oily wastewater. This review summarized the investigation work applying MD in wastewater treatment, and the performance was comprehensively introduced. Moreover, the obstructions of industrialization, such as membrane fouling, membrane wetting, and high energy consumption, were discussed with the practical investigation. To cope with these problems, various strategies have been adopted to enhance MD performance, including coupling membrane processes and developing membranes with specific surface characteristics. In addition, the significance of nutrient recovery and waste heat utilization was indicated.
Collapse
|
22
|
Tejera J, Hermosilla D, Gascó A, Negro C, Blanco Á. Combining Coagulation and Electrocoagulation with UVA-LED Photo-Fenton to Improve the Efficiency and Reduce the Cost of Mature Landfill Leachate Treatment. Molecules 2021; 26:molecules26216425. [PMID: 34770834 PMCID: PMC8587920 DOI: 10.3390/molecules26216425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 12/07/2022] Open
Abstract
This study focused on the reduction of the treatment cost of mature landfill leachate (LL) by enhancing the coagulation pre-treatment before a UVA-LED photo-Fenton process. A more efficient advanced coagulation pretreatment was designed by combining conventional coagulation (CC) and electro-coagulation (EC). Regardless of the order in which the two coagulations were applied, the combination achieved more than 73% color removal, 80% COD removal, and 27% SUVA removal. However, the coagulation order had a great influence on both final pH and total dissolved iron, which were key parameters for the UVA-LED photo-Fenton post-treatment. CC (pH = 5; 2 g L-1 of FeCl36H2O) followed by EC (pH = 5; 10 mA cm-2) resulted in a pH of 6.4 and 100 mg L-1 of dissolved iron, whereas EC (pH = 4; 10 mA cm-2) followed by CC (pH = 6; 1 g L-1 FeCl36H2O) led to a final pH of 3.4 and 210 mg L-1 dissolved iron. This last combination was therefore considered better for the posterior photo-Fenton treatment. Results at the best cost-efficient [H2O2]:COD ratio of 1.063 showed a high treatment efficiency, namely the removal of 99% of the color, 89% of the COD, and 60% of the SUVA. Conductivity was reduced by 17%, and biodegradability increased to BOD5:COD = 0.40. With this proposed treatment, a final COD of only 453 mg O2 L-1 was obtained at a treatment cost of EUR 3.42 kg COD-1.
Collapse
Affiliation(s)
- Javier Tejera
- Department of Chemical Engineering and Materials, Chemistry Science Faculty, Complutense University of Madrid, 28040 Madrid, Spain; (J.T.); (Á.B.)
| | - Daphne Hermosilla
- Department of Forest and Environmental Engineering and Management, E.T.S.I. Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (D.H.); (A.G.)
- Department of Agricultural and Forest Engineering, EIFAB, Campus Duques de Soria, University of Valladolid, 42005 Soria, Spain
| | - Antonio Gascó
- Department of Forest and Environmental Engineering and Management, E.T.S.I. Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (D.H.); (A.G.)
| | - Carlos Negro
- Department of Chemical Engineering and Materials, Chemistry Science Faculty, Complutense University of Madrid, 28040 Madrid, Spain; (J.T.); (Á.B.)
- Correspondence:
| | - Ángeles Blanco
- Department of Chemical Engineering and Materials, Chemistry Science Faculty, Complutense University of Madrid, 28040 Madrid, Spain; (J.T.); (Á.B.)
| |
Collapse
|
23
|
Sher F, Iqbal SZ, Rasheed T, Hanif K, Sulejmanović J, Zafar F, Lima EC. Coupling of electrocoagulation and powder activated carbon for the treatment of sustainable wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48505-48516. [PMID: 33909245 DOI: 10.1007/s11356-021-14129-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
The present research work is based on an electrochemical technique in combination with powdered activated carbon (PAC) for the removal of micropollutants by adsorption as an advanced stage purification step from effluents of pilot plant wastewater treatment plants (WWTP). The effluents of sedimentation tank comprised of wastewater plus PAC (WWPAC). The pilot plant mainly consists of two parts: the first one consists of electrocoagulation (EC) reactor, and the second consists of electrophoretic deposition (EPD) discs and electroflotation (EF) setup. The electrocoagulation (EC) reactor consisted of the electrode material (Al and Fe). Both types of electrodes have been tested with the outflow of sedimentation tank. The outflow from the sedimentation tank has been entered into the EC reactor for the determination of EC reactor efficacy for the successful accomplishment of EC process at the designed pilot plant for WW treatment. The effect of different operational parameters, PAC dosage (20 mg), electrode nature (Fe and Al) and current density (0.34-2.02 A/m2), has been studied to find out the optimum conditions. Sludge volume index (SVI) of the sludge, thermogravimetric (TG), differential thermal analyses (DTA) and particle size distribution (PSD) of the flocs generated after the EC process has also been studied. The turbidity, pH and conductivity of effluents before and after EC treatment have also been carried out. The research work performed detailed analysis of the wastewater effluents at pilot plant scale and gave promising results for future work in advance wastewater treatment direction.
Collapse
Affiliation(s)
- Farooq Sher
- School of Mechanical, Aerospace and Automotive Engineering, Faculty of Engineering, Environmental and Computing, Coventry University, Coventry, CV1 5FB, UK.
| | - Sania Zafar Iqbal
- Department of Biochemistry, University of Agriculture, Faisalabad, 38040, Pakistan
- International Society of Engineering Science and Technology, Coventry, UK
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Kashif Hanif
- School of Mechanical, Aerospace and Automotive Engineering, Faculty of Engineering, Environmental and Computing, Coventry University, Coventry, CV1 5FB, UK
- International Society of Engineering Science and Technology, Coventry, UK
| | - Jasmina Sulejmanović
- Department of Chemistry Faculty of Sciences, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Fatima Zafar
- International Society of Engineering Science and Technology, Coventry, UK
- Institute of Biochemistry and Biotechnology, University of the Punjab, Lahore, 54590, Pakistan
| | - Eder C Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Goncalves 9500, P.O. Box 15003, Porto Alegre, RS, ZIP 91501-970, Brazil
| |
Collapse
|
24
|
Hamid MAA, Aziz HA, Yusoff MS, Rezan SA. Clinoptilolite augmented electrocoagulation process for the reduction of high-strength ammonia and color from stabilized landfill leachate. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:596-607. [PMID: 32991022 DOI: 10.1002/wer.1461] [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: 08/11/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
The high-strength leachate produced from sanitary landfill is a serious issue around the world as it poses adverse effects on aquatic life and human health. Physio-chemical technology is one of the promising options as the leachate normally presents in stabilized form and not fully amendable by biological treatment. In this research, the effectiveness of natural zeolite (clinoptilolite) augmented electrocoagulation process (hybrid system) for removing high-strength ammonia (3,442 mg/L) and color (8,427 Pt-Co) from naturally saline (15 ppt) local landfill leachate was investigated. A batch mode laboratory-scale reactor with parallel-monopolar aluminum electrodes attached to a direct current (DC) electric power was used as an electrocoagulation reactor for performance enhancement purpose. Optimum operational conditions of 146 g/L zeolite dosage, 600 A/m2 current density, 60 min treatment time, 200 rpm stirring speed, 35 min settling duration, and pH 9 were recorded with up to 70% and 88% removals of ammonia and color, respectively. The estimated overall operational cost was 26.22 $/m3 . The biodegradability of the leachate had improved from 0.05 to 0.27 in all post-treatment processes. The findings revealed the ability of the hybrid process as a viable option in eliminating concentrated ammonia and color in natural saline landfill leachate. PRACTITIONER POINTS: Clinoptilolite was augmented on the electrocoagulation process in saline and stabilized landfill leachate (15 ppt). The high strength NH3 -N (3,442 mg/L) and color (8,427 Pt-Co) were 70% and 88% removed, respectively. The optimum conditions occurred at 140 g/L zeolite, 60 mA/cm2 current density, 60 min, and final pH of 8.20. The biodegradability of the leachate improved from 0.05 to 0.27 after the treatment. This hybrid treatment was simple, faster, and did not require auxiliary electrolyte.
Collapse
Affiliation(s)
- Mohd Azhar Abd Hamid
- School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Hamidi Abdul Aziz
- School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
- Solid Waste Management Cluster, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Mohd Suffian Yusoff
- School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
- Solid Waste Management Cluster, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Sheikh Abdul Rezan
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| |
Collapse
|
25
|
Ouazani F, Benchekor H, Chergui Y, Iddou A, Aziz A. Linearized form effect on estimation adsorption parameters of three industrial dyes by lignocellulosic sorbent. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:1045-1055. [PMID: 33312623 PMCID: PMC7721915 DOI: 10.1007/s40201-020-00526-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 09/03/2020] [Indexed: 06/12/2023]
Abstract
CONTEXT Textile industries discharge large amounts of untreated colored wastewater into ecosystems which have adverse effects on the human, living and aquatic environment. The aims of this study were: upgrading and testing the brewery waste adsorption affinity towards BEMACID red (B-R), BEMACID yellow (B-Y) and BEZAKTIV black (B-B), verified the effect of linear form modeling on adsorption parameters values and to find the limiting kinetic step in adsorption process. METHODS The adsorption efficiency of brewery waste towards three textile dyes: B-Y, B-R and B-B is tested. The evolution between the adsorption capacity and the operating conditions such as: pH solution, adsorbent mass, contact time and initial dye concentration is determined by kinetics measurements. Effect of a form of pseudo-first order, six forms of pseudo-second order, a form of intra-particle diffusion and a form of external mass transfer diffusion are tested to the prediction of kinetic parameters and to find the limiting kinetic step. In order to modeling the equilibrium data, a form of Freundlich and five forms of Langmuir isotherms are tested. The residual concentration of dye in solution was measured by spectrophotometer. Scanning Electron Microscope (SEM) was using to investigate the structure of raw adsorbent. RESULTS The results of kinetics measurements show that the perfect adsorption operating conditions are: acidic medium for all dyes (pH = 2 and pH = 3), low mass adsorbent (m = 40 mg), equilibrium time t = 40 min and for initial concentration of 250 mg/L. Also the results prove that the adsorption mechanism is controlled by both steps of diffusions (interne and extern diffusion) and fitted well by the first and the second linearized form of pseudo-second order model with correlation coefficient R2 = 0.99. The results of isotherms modeling show that the second and the third linearized forms of Langmuir giving the best removed amount for B-Y equal 200 and 219.4 mg/g respectively compared to others linearized forms. CONCLUSION In summary, the effect of linear forms used either in the medellization of isotherms or kinetic data is significant in the prediction of adsorption parameters, also brewery waste has a significant B-Y dye adsorption affinity compared to others dyes, the descending order of maximum adsorption capacity finding is: qe = 209 mg/g for B-Y, qe = 152 mg/g for B-R and finally qe = 108 mg/g for B-B.
Collapse
Affiliation(s)
- Fouzia Ouazani
- Laboratory of recovery materials Faculty of Science and Technology, University of Mostaganem, PB 227, 27000 Mostaganem, Algeria
| | - Hassiba Benchekor
- Laboratory of recovery materials Faculty of Science and Technology, University of Mostaganem, PB 227, 27000 Mostaganem, Algeria
| | - Yamina Chergui
- Laboratory of recovery materials Faculty of Science and Technology, University of Mostaganem, PB 227, 27000 Mostaganem, Algeria
| | - Abdelkader Iddou
- Laboratory of recovery materials Faculty of Science and Technology, University of Mostaganem, PB 227, 27000 Mostaganem, Algeria
| | - Abdellah Aziz
- Laboratory of recovery materials Faculty of Science and Technology, University of Mostaganem, PB 227, 27000 Mostaganem, Algeria
| |
Collapse
|
26
|
Al-Qodah Z, Tawalbeh M, Al-Shannag M, Al-Anber Z, Bani-Melhem K. Combined electrocoagulation processes as a novel approach for enhanced pollutants removal: A state-of-the-art review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140806. [PMID: 32717462 DOI: 10.1016/j.scitotenv.2020.140806] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/04/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
A novel approach using the integration of electrocoagulation, with one or more treatment processes has been recently practiced to improve the removal of colloidal and non-biodegradable pollutants. Several treatment processes including adsorption, chemical coagulation, magnetic field, reverse osmosis, and membrane filtration have been combined with electrocoagulation treatment step to improve pollutants removal efficiency. These combined systems showed the potential to improve the performance of the treatment process. This paper presents a state-of-the-art review for the recent processes available in the literature that combine treatment electrocoagulation with one of the previously mentioned treatment processes. It is found that the removal efficiency of any combined processes is higher than that of any single treatment process and the combined process has up to 20% higher removal efficiency compared to electrocoagulation alone. However, most reported studies were conducted at bench-scale level with synthetic wastewater instead of real wastewater. The main aspects of these combined systems including process mechanism, kinetic models, cost and the scale up of combined processes were discussed and summarized. Finally, several concluding remarks were drawn in view of the literature investigations and the gaps that suggest more studies and insights for future development were addressed.
Collapse
Affiliation(s)
- Zakaria Al-Qodah
- Chemical Engineering Department, Al-Balqa Applied University, 11134 Amman, Jordan
| | - Muhammad Tawalbeh
- Sustainable and Renewable Energy Engineering Department, University of Sharjah, Sharjah, United Arab Emirates.
| | - Mohammad Al-Shannag
- Department of Chemical Engineering, School of Engineering, The University of Jordan, 11942 Amman, Jordan; Jordan Uranium Mining Company, 11953 Amman, Jordan.
| | - Zaid Al-Anber
- Chemical Engineering Department, Al-Balqa Applied University, 11134 Amman, Jordan
| | - Khalid Bani-Melhem
- Department of Water Management and Environment, Faculty of Natural Resources and Environment, The Hashemite University, Al-Zarqa, Jordan
| |
Collapse
|
27
|
Öztürk T, Özcan ÖF. Effectiveness of electrocoagulation and chemical coagulation methods on paper industry wastewaters and optimum operating parameters. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1805465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tuba Öztürk
- Department of Environmental Engineering, University of Namık Kemal, Corlu, Turkey
| | - Ömer Faruk Özcan
- Department of Environmental Engineering, University of Namık Kemal, Corlu, Turkey
| |
Collapse
|
28
|
Meghlaoui FZ, Merouani S, Hamdaoui O, Alghyamah A, Bouhelassa M, Ashokkumar M. Fe(III)‐catalyzed degradation of persistent textile dyes by chlorine at slightly acidic conditions: the crucial role of Cl
2
●−
radical in the degradation process and impacts of mineral and organic competitors. ASIA-PAC J CHEM ENG 2020. [DOI: 10.1002/apj.2553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Fatima Zohra Meghlaoui
- Laboratory of Environmental Process Engineering, Faculty of Process Engineering University Salah Boubnider—Constantine 3 Constantine Algeria
| | - Slimane Merouani
- Laboratory of Environmental Process Engineering, Faculty of Process Engineering University Salah Boubnider—Constantine 3 Constantine Algeria
| | - Oualid Hamdaoui
- Chemical Engineering Department College of Engineering, King Saud University Riyadh Saudi Arabia
| | - Abdulaziz Alghyamah
- Chemical Engineering Department College of Engineering, King Saud University Riyadh Saudi Arabia
| | - Mohammed Bouhelassa
- Laboratory of Environmental Process Engineering, Faculty of Process Engineering University Salah Boubnider—Constantine 3 Constantine Algeria
| | | |
Collapse
|
29
|
Espinoza-Quiñones FR, Romani M, Borba CE, Módenes AN, Utzig CF, Dall'Oglio IC. A mathematical approach based on the Nernst-Planck equation for the total electric voltage demanded by the electrocoagulation process: Effects of a time-dependent electrical conductivity. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115626] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
30
|
Mittal H, Babu R, Dabbawala AA, Alhassan SM. Low-Temperature Synthesis of Magnetic Carbonaceous Materials Coated with Nanosilica for Rapid Adsorption of Methylene Blue. ACS OMEGA 2020; 5:6100-6112. [PMID: 32226893 PMCID: PMC7098013 DOI: 10.1021/acsomega.0c00093] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/04/2020] [Indexed: 05/12/2023]
Abstract
This work reports the synthesis of nanosilica-coated magnetic carbonaceous adsorbents (MCA@SiO2) using low-temperature hydrothermal carbonization technique (HCT) and the feasibility to utilize it for methylene blue (MB) adsorption. Initially, a carbon precursor (CP) was synthesized from corn starch under saline conditions at 453 K via HCT followed by the magnetization of CP again via HCT at 453 K. Subsequently, MCA was coated with silica nanoparticles. MCA and MCA@SiO2 were characterized using X-ray diffraction, Fourier transform infrared, scanning electron microscopy/energy-dispersive spectroscopy, transmission electron microscopy, and Brunauer-Emmett-Teller (BET) N2 adsorption-desorption isotherms. The BET surface area of MCA and MCA@SiO2 were found to be 118 and 276 m2 g-1, respectively. Adsorption of MB onto MCA@SiO2 was performed using batch adsorption studies and in the optimum condition, MCA@SiO2 showed 99% adsorption efficiency with 0.5 g L-1 of MCA@SiO2 at pH 7. Adsorption isotherm studies predicted that MB adsorption onto MCA@SiO2 was homogeneous monolayer adsorption, which was best described using a Langmuir model with the maximum adsorption capacity of 516.9 mg g-1 at 25 °C. During adsorption kinetics, a rapid dye removal was observed which followed pseudo-first- as well as pseudo-second-order models, which suggested that MB dye molecules were adsorbed onto MCA@SiO2 via both ion exchange as well as the chemisorption process. The endothermic and spontaneous nature of the adsorption of MB onto MCA@SiO2 was established by thermodynamics studies. Mechanism of dye diffusion was collectively governed by intraparticle diffusion and film diffusion processes. Furthermore, MB was also selectively adsorbed from its mixture with an anionic dye, that is, methyl orange. Column adsorption studies showed that approximately 500 mL of MB having 50 mg L-1 concentration can be treated with 0.5 g L-1 of MCA@SiO2. Furthermore, MCA@SiO2 was repeatedly used for 20 cycles of adsorption-desorption of MB. Therefore, MCA@SiO2 can be effectively utilized in cationic dye-contaminated wastewater remediation applications.
Collapse
|
31
|
Liu H, Chen M, Wei D, Zhang H, Peng J, Liu G. A novel visible light controllable adsorption-desorption system with a magnetic recyclable adsorbent. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 707:136025. [PMID: 31869606 DOI: 10.1016/j.scitotenv.2019.136025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/24/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
Convenient and energy-efficient desorption or regeneration processes are prerequisites for the development of an ideal adsorbent. For this work, a novel magnetic adsorbent (citric acid/Bi2O2CO3/Fe3O4) was controllably synthesized via a facile hydrothermal method. The as-prepared materials demonstrated the excellent adsorption of methylene blue (MB), where ~70% of the MB was absorbed within 10 min. Interestingly, the desorption process could be triggered by visible light irradiation, and 99% of the absorbed MB was released into solution within 4 h. Further, the magnetic materials could be conveniently recovered using a magnet and regenerated via a model hydrothermal process. Even after two regeneration cycles, approximately 60% adsorption and 63% desorption abilities were retained, which suggested strong potential for the recyclability of these materials.
Collapse
Affiliation(s)
- Haijin Liu
- School of Environmental Science, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China.
| | - Min Chen
- School of Environmental Science, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China
| | - Dandan Wei
- School of Environmental Science, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China; Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Hui Zhang
- School of Environmental Science, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China
| | - Jianbiao Peng
- School of Environmental Science, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China
| | - Guoguang Liu
- Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
| |
Collapse
|
32
|
Araújo CMB, Oliveira do Nascimento GF, Bezerra da Costa GR, Baptisttella AMS, Fraga TJM, Assis Filho RB, Ghislandi MG, Motta Sobrinho MA. Real textile wastewater treatment using nano graphene‐based materials: Optimum pH, dosage, and kinetics for colour and turbidity removal. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23712] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Caroline M. B. Araújo
- Chemical Engineering DepartmentUniversidade Federal de Pernambuco (UFPE) Recife Brazil
| | | | | | | | - Tiago J. M. Fraga
- Chemical Engineering DepartmentUniversidade Federal de Pernambuco (UFPE) Recife Brazil
| | - Romero B. Assis Filho
- Chemical Engineering DepartmentUniversidade Federal de Pernambuco (UFPE) Recife Brazil
- Department of ChemistryInstituto Federal de Pernambuco (IFPE) Recife Brazil
| | - Marcos G. Ghislandi
- Engineering Campus (UACSA)Universidade Federal Rural de Pernambuco (UFRPE) Recife Brazil
| | | |
Collapse
|
33
|
Koyuncu S, Arıman S. Domestic wastewater treatment by real-scale electrocoagulation process. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:656-667. [PMID: 32460270 DOI: 10.2166/wst.2020.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, domestic wastewaters originating from a settlement with a population of 17,500 were treated by electrocoagulation process in a real-scale EC plant and the economic applicability of the process was investigated. The removal efficiencies of control parameters in the influent and effluent of the real-scale treatment plant such as suspended solids (SS), biological oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP) and changes of pH and conductivity parameters were monitored for 12 months. The obtained data were evaluated according to European Urban Wastewater Treatment Directive, Turkish Water Pollution Control Regulation and Turkish Urban Wastewater Treatment Regulation. According to the results obtained, the removal efficiencies of the pollutant parameters were achieved in the range of 72-83% for SS, 67-80% for COD, 69-81% for BOD, 21-47% for TN and 27-46% for TP. Considering the Turkish wastewater discharge regulations, it can be concluded that the discharge standards for SS, COD and BOD parameters were achieved while they were not achieved in certain periods for TN and TP. In addition, the energy consumption and the operating cost of this real-scale plant were determined to be 0.49-0.54 kWh/m3 and 0.24-0.28 EUR/m3, respectively.
Collapse
Affiliation(s)
| | - Sema Arıman
- Department of Meteorological Engineering, Samsun University, Samsun, Turkey E-mail:
| |
Collapse
|
34
|
Remediation of azo-dyes based toxicity by agro-waste cotton boll peels mediated palladium nanoparticles. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2019.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
35
|
Xiao X, Wang Y, Cui B, Zhang X, Zhang D, Xu X. Preparation of MoS2 nanoflowers with rich active sites as an efficient adsorbent for aqueous organic dyes. NEW J CHEM 2020. [DOI: 10.1039/d0nj00129e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this study, molybdenum disulfide (MoS2) was used as an adsorbent to quickly and efficiently remove Rhodamine B (RhB) from wastewater.
Collapse
Affiliation(s)
- Xin Xiao
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Yihui Wang
- School of Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222005
- China
| | - Bowen Cui
- School of Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222005
- China
| | - Xiaobo Zhang
- School of Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222005
- China
| | - Dongen Zhang
- School of Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222005
- China
| | - Xingyou Xu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
- School of Chemical Engineering
| |
Collapse
|
36
|
Dabirvaziri B, Givianrad MH, Sourinejad I, Moradi AM, Mostafavi PG. A simple and effective synthesis of magnetic γ-Fe 2O 3@SiO 2@TiO 2-Ag microspheres as a recyclable photocatalyst: dye degradation and antibacterial potential. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:949-960. [PMID: 32030165 PMCID: PMC6985320 DOI: 10.1007/s40201-019-00410-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 10/22/2019] [Indexed: 05/15/2023]
Abstract
PURPOSE AND METHODS In this study, an effective technique for synthesizing γ-Fe2O3@SiO2@TiO2-Ag magnetically separable photocatalyst was introduced by combining co-precipitation, sol-gel, and photo-deposition methods. A series of analyses including FTIR, SEM, EDS, XRD, and VSM were applied to characterize the prepared materials and the investigations on photocatalytic activity of the prepared composites were accomplished. RESULTS Compared to bare γ-Fe2O3@SiO2@TiO2, the Ag-doped composite was more active in terms of photocatalytic characteristics. By applying γ-Fe2O3@SiO2@TiO2-Ag, the decomposition rate of the Basic blue 41 reached to about 94% after 3 h of UV irradiation; this rate was 63% for pure γ-Fe2O3@SiO2@TiO2. The results indicated that the dye degradation kinetics followed first-order kinetic model. During the five cycles of separation, it was observed that the Ag-doped composite was greatly effective and stable in terms of recycling. Moreover, the results indicated that antibacterial activity of γ-Fe2O3@SiO2@TiO2-Ag was remarkably stronger than that of pure Fe2O3@SiO2@TiO2 particles. CONCLUSION It was concluded that by modifying magnetic TiO2 by silver nanoparticles, charge separation was eased by catching photo-generated electrons, resulted in an enhanced photo- and biological activity. Graphical abstract.
Collapse
Affiliation(s)
- Bahareh Dabirvaziri
- Department of Marine Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Iman Sourinejad
- Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran
| | - Ali Mashinchian Moradi
- Department of Marine Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Pargol Ghavam Mostafavi
- Department of Marine Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
37
|
Bazgir A, Khorshidi A, Kamani H, Ashrafi SD, Naghipour D. Modeling of azo dyes adsorption on magnetic NiFe 2O 4/RGO nanocomposite using response surface methodology. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:931-947. [PMID: 32030164 PMCID: PMC6985353 DOI: 10.1007/s40201-019-00409-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 10/10/2019] [Indexed: 05/08/2023]
Abstract
BACKGROUND Azo group dyes are the largest group of synthetics dyes that widely used in industries, especially in textile industry. The presence of these organic compounds in wastewaters and their discharge into environment without efficient treatment may cause adverse effect on human, living and aquatic environment. The purpose of this study was to optimize the adsorption of azo dye of Direct Red 81 (anionic dye) and Basic Blue 41 (cationic dye) from aqueous solution onto magnetic NiFe2O4/RGO nanocomposite. METHODS In this study the response surface methodology (RSM) based on the central composite design (CCD), was used to optimization and modeling of adsorption process DR81 and BB41 dye on NiFe2O4/RGO. in order to investigating the effect of the operating parameters on the adsorption efficiency DR81 and BB41, four influential factors were chosen that includes of pH (3-9), contact time (5-25 min), adsorbent amount (0.02-0.05 g) and initial dye concentration (40-200 mg/L). A total of 30 experiments were performed for each dye in this study. The concentration of dye in solution was measured by spectrophotometer. The structure of synthesized adsorbent was investigated using Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Fourier transform irradiation (FTIR), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). RESULTS Analysis of variance (ANOVA) showed that regression model for both dye adsorption with value of P value <0.001 is significant statistically. The correlation coefficient (R2) for DR81 (R2 = 0.9968) and BB41 (R2 = 0.9948) indicated which there is a good agreement between predicted values and the results of the experiments and the model also well predict the adsorption efficiency. Furthermore, the factors of pH, dye concentration and adsorbent dose, have the greatest effect on adsorption, respectively, while contact time have the lowest effect on adsorption of both dyes. The adsorption behavior of the DR81 and BB41 onto NiFe2O4/RGO was best described by the Langmuir and Freundlich isotherm, respectively. The optimum conditions for maximum removal of DR81 (96.41%) was found to be at pH 3, contact time 19.68 min, adsorbent dose 0.02 g and initial dye concentration 40 mg/L. However, the optimum conditions for maximum removal of BB41 (97.87%) was found to be at pH 9 contact time 18.16 min, adsorbent dose 0.02 g and initial dye concentration 40 mg/L. CONCLUSION The present study shows that magnetic NiFe2O4/RGO nanocomposite have much potential as a powerful adsorbent for the rapid adsorption of anionic (DR81) and cationic dyes (BB41) from aqueous solution.
Collapse
Affiliation(s)
- Ayoub Bazgir
- Student of School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Alireza Khorshidi
- Department of Chemistry, Faculty of Sciences, University of Guilan, P.O. Box 41335-1914, Rasht, Guilan Iran
| | - Hossein Kamani
- Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Seyed Davoud Ashrafi
- Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran
- Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Dariush Naghipour
- Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
| |
Collapse
|
38
|
Tavangar T, Jalali K, Alaei Shahmirzadi MA, Karimi M. Toward real textile wastewater treatment: Membrane fouling control and effective fractionation of dyes/inorganic salts using a hybrid electrocoagulation – Nanofiltration process. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.01.070] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
39
|
Giwa A, Dindi A, Kujawa J. Membrane bioreactors and electrochemical processes for treatment of wastewaters containing heavy metal ions, organics, micropollutants and dyes: Recent developments. JOURNAL OF HAZARDOUS MATERIALS 2019; 370:172-195. [PMID: 29958700 DOI: 10.1016/j.jhazmat.2018.06.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 06/10/2018] [Accepted: 06/11/2018] [Indexed: 05/26/2023]
Abstract
Research and development activities on standalone systems of membrane bioreactors and electrochemical reactors for wastewater treatment have been intensified recently. However, several challenges are still being faced during the operation of these reactors. The current challenges associated with the operation of standalone MBR and electrochemical reactors include: membrane fouling in MBR, set-backs from operational errors and conditions, energy consumption in electrochemical systems, high cost requirement, and the need for simplified models. The advantage of this review is to present the most critical challenges and opportunities. These challenges have necessitated the design of MBR derivatives such as anaerobic MBR (AnMBR), osmotic MBR (OMBR), biofilm MBR (BF-MBR), membrane aerated biofilm reactor (MABR), and magnetically-enhanced systems. Likewise, electrochemical reactors with different configurations such as parallel, cylindrical, rotating impeller-electrode, packed bed, and moving particle configurations have emerged. One of the most effective approaches towards reducing energy consumption and membrane fouling rate is the integration of MBR with low-voltage electrochemical processes in an electrically-enhanced membrane bioreactor (eMBR). Meanwhile, research on eMBR modeling and sludge reuse is limited. Future trends should focus on novel/fresh concepts such as electrically-enhanced AnMBRs, electrically-enhanced OMBRs, and coupled systems with microbial fuel cells to further improve energy efficiency and effluent quality.
Collapse
Affiliation(s)
- Adewale Giwa
- Department of Chemical Engineering, Khalifa University of Science and Technology, Masdar City campus, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
| | - Abdallah Dindi
- Department of Chemical Engineering, Khalifa University of Science and Technology, Masdar City campus, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Joanna Kujawa
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7, Gagarina Street, 87-100 Torun, Poland
| |
Collapse
|
40
|
Shamaei L, Khorshidi B, Perdicakis B, Sadrzadeh M. Treatment of oil sands produced water using combined electrocoagulation and chemical coagulation techniques. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 645:560-572. [PMID: 30029132 DOI: 10.1016/j.scitotenv.2018.06.387] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/19/2018] [Accepted: 06/29/2018] [Indexed: 06/08/2023]
Abstract
Hybrid electrocoagulation-chemical coagulation (EC-CC) process has attracted a growing attention for the removal of various types of wastewaters contaminants. In this paper, the feasibility of EC-CC technique as an alternative to conventional chemical processes for the treatment of steam assisted gravity drainage (SAGD) produced water has been systematically studied. Eight parameters, namely electrode material, cell configuration, pH and temperature of the solution, chemical coagulant dosage, intensity of the electrical current, mixing rate, and treatment time were studied. To explore the synergistic effect of the design parameters, the experimental trials were arranged using Taguchi method. Analysis of variance (ANOVA) was performed to evaluate the effect of each design parameter on the organic matter removal from the SAGD produced water. It was found that all parameters except the electrode arrangement had a significant effect on the removal efficiency of the EC-CC process. Among these parameters, the chemical coagulant and the treatment time had the most significant contribution to the efficiency by 40% and 26%, respectively. The optimum condition for the highest TOC removal efficiency (39.8%) was obtained by applying 0.34 A to Al electrode in a bipolar (BP) configuration when the pH, temperature, coagulant concentration, mixing rate, and reaction time were set to 8, 60 °C, 200 mg/L, 700 rpm, and 90 min, respectively. Moreover, a second-order polynomial regression model was proposed to predict the removal efficiency in terms of design parameters. An excellent agreement between the model predictions and experimental data was obtained with the adjusted R2 of about 99%.
Collapse
Affiliation(s)
- Laleh Shamaei
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton T6G 1H9, AB, Canada.
| | - Behnam Khorshidi
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton T6G 1H9, AB, Canada.
| | - Basil Perdicakis
- Suncor Energy Inc., P.O. Box 2844, 150-6th Ave. SW, Calgary T2P 3E3, Alberta, Canada.
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton T6G 1H9, AB, Canada.
| |
Collapse
|
41
|
Ghanbarian M, Mahvi AH, Ghanbarian M. Data on bioassay of toxicity reduction of treated textile wastewater by using nanophotocatalytic process by Daphnia magna. Data Brief 2018; 21:1321-1324. [PMID: 30456251 PMCID: PMC6231081 DOI: 10.1016/j.dib.2018.10.143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 10/22/2018] [Accepted: 10/26/2018] [Indexed: 12/07/2022] Open
Abstract
Practicability and possibility of photocatalytic degradation of Ro16 textile dye and the actual wastewater of textile were studied on pilot scale. The amount of reduction in solution toxicity was studied and assessed by the application of a bioassay using Daphnia magna. The solution toxicity at the beginning of the process has an increasing procedure and this is caused by the intermediate products that are produced during the photocatalytic process from the mother compounds, and are more toxic compared to them, and their toxicity declines at the end of the process with the completion of mineralization. The procedure of toxicity increase and its decrease in the course of photocatalytic process has a direct relation with the amount of mineralization.
Collapse
Affiliation(s)
- Marjan Ghanbarian
- School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - A H Mahvi
- Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | | |
Collapse
|
42
|
Yavuz Y, Ögütveren ÜB. Treatment of industrial estate wastewater by the application of electrocoagulation process using iron electrodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 207:151-158. [PMID: 29161644 DOI: 10.1016/j.jenvman.2017.11.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/21/2017] [Accepted: 11/12/2017] [Indexed: 05/18/2023]
Abstract
In this study electrocoagulation (EC) of industrial estate wastewater taken from the inlet of wastewater treatment plant was investigated using sacrificial iron electrodes. Employing a pole changer to homogenous consumption of electrodes, studies on the parameters such as current density, supporting electrolyte concentration and initial pH, which have significant effects on COD removal and hence the energy consumption, were performed. Hydrogen peroxide was used in different concentrations to observe its effects on COD removal efficiency and the energy consumption. Sludge productions were also calculated for all experiments. COD removal efficiency of ∼92% was obtained at the best experimental conditions (i = 30 mA/cm2, SE = 3 mM Na2SO4, pH = original pH (∼6) of the wastewater, 1500 mg/L H2O2) with an energy cost of €3.41/m3 wastewater treated and the sludge production of 5.45 g per g COD removed.
Collapse
Affiliation(s)
- Y Yavuz
- Anadolu University, Dept. of Environmental Engineering, Eskişehir, Turkey.
| | - Ü B Ögütveren
- Anadolu University, Dept. of Environmental Engineering, Eskişehir, Turkey
| |
Collapse
|
43
|
Lei C, Pi M, Zhou W, Guo Y, Zhang F, Qin J. Synthesis of hierarchical porous flower-like ZnO-AlOOH structures and their applications in adsorption of Congo Red. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.09.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
44
|
Moussa DT, El-Naas MH, Nasser M, Al-Marri MJ. A comprehensive review of electrocoagulation for water treatment: Potentials and challenges. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 186:24-41. [PMID: 27836556 DOI: 10.1016/j.jenvman.2016.10.032] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/09/2016] [Accepted: 10/15/2016] [Indexed: 05/18/2023]
Abstract
Electrocoagulation is an effective electrochemical approach for the treatment of different types of contaminated water and has received considerable attention in recent years due its high efficiency in dealing with numerous stubborn pollutants. It has been successful in dealing with organic and inorganic contaminants with negligible or almost no generation of by-product wastes. During the past decade, vast amount of research has been devoted to utilizing electrocoagulation for the treatment of several types of wastewater, ranging from polluted groundwater to highly contaminated refinery wastewater. This paper offers a comprehensive review of recent literature that has been dedicated to utilizing electrocoagulation for water treatment, focusing on current successes on specific applications in water and wastewater treatment, as well as potentials for future applications. The paper examines such aspects as theory, potential applications, current challenges, recent developments as well as economical concerns associated with the technology. Most of the recent EC research has been focusing on pollutant-specific evaluation without paying attention to cell design, process modeling or industrial applications. This review attempts to highlight the main achievements in the area and outlines the major shortcomings with recommendations for promising research options that can enhance the technology and broaden its range of applications.
Collapse
Affiliation(s)
- Dina T Moussa
- Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Muftah H El-Naas
- Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Mustafa Nasser
- Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Mohammed J Al-Marri
- Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| |
Collapse
|