101
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Valadi FM, Ekramipooya A, Gholami MR. Selective separation of Congo Red from a mixture of anionic and cationic dyes using magnetic-MOF: Experimental and DFT study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114051] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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102
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Self-Nitrogen-Doped Nanoporous Carbons Derived from Poly(1,5-diaminonaphthalene) for the Removal of Toxic Dye Pollutants from Wastewater: Non-Linear Isotherm and Kinetic Analysis. Polymers (Basel) 2020; 12:polym12112563. [PMID: 33142894 PMCID: PMC7693505 DOI: 10.3390/polym12112563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 11/17/2022] Open
Abstract
The high surface area and porosity of self-nitrogen-doped porous carbons (SNPCs) nominates them for potential application in water treatment due to their high efficiency towards the removal of various pollutants. In this study, SNPCs were fabricated from poly(1,5-diaminonaphthalene) (P(1,5-DANPh) by single and simultaneous carbonization at the activation step at different temperatures (600, 700, and 800 °C). The carbonization's temperature plays a vital role in controlling the nitrogen-doping, surface area, porosity, and morphology of SNPCs. The SNPCs-7 sample prepared at 700 °C showed the highest surface area (1678.8 m2 g-1) with pore volume (0.943 cm3 g-1) with a micro/meso porous structure. The prepared SNPCs were used as an effective adsorbent for removal of crystal violet dye (CV) from contaminated water. SNPCs-7 showed the highest adsorption of 487.53 mg g-1 and the adsorption capacity of the SNPCs samples follows the order SNPCs-7 > SNPCs-8 > SNPCs-6, which is consistent with the results of their surface area and porosity. The adsorption for CV dye followed Freundlich isotherm models and a pseudo second order kinetic model. The negative values of Gipps free energy (ΔG°) and positive value of enthalpy (ΔH°) indicated that the adsorption of CV dye onto the surface of SNPCs was a spontaneous and endothermic process, respectively. Based on the results, the adsorption mechanism of CV dye onto the surface of SNPCs was proposed.
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103
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Mohammed Redha Z. Multi-response optimization of the coagulation process of real textile wastewater using a natural coagulant. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2020. [DOI: 10.1080/25765299.2020.1833509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Zainab Mohammed Redha
- Department of Chemical Engineering, College of Engineering, University of Bahrain, Sakheer, Bahrain
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104
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Synthesis and characterization of La(III) supported carboxymethylcellulose-clay composite for toxic dyes removal: Evaluation of adsorption kinetics, isotherms and thermodynamics. Int J Biol Macromol 2020; 161:1117-1126. [DOI: 10.1016/j.ijbiomac.2020.06.103] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 11/18/2022]
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105
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Xu T, Wang S, Li Y, Zhang J, Li J, Zhang Y, Yang C. Optimization and Mechanism Study on Destruction of the Simulated Waste Ion-Exchange Resin from the Nuclear Industry in Supercritical Water. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02732] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tiantian Xu
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Shuzhong Wang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Yanhui Li
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Jie Zhang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, Shaanxi, China
| | - Jianna Li
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Yishu Zhang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Chuang Yang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
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106
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Preparation, characterization and application of Fe-pillared bentonite to the removal of Coomassie blue dye from aqueous solutions. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04236-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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107
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Biosynthesis of NiO Nanoparticles Using Soursop (Annona muricata L.) Fruit Peel Green Waste and Their Photocatalytic Performance on Crystal Violet Dye. J CLUST SCI 2020. [DOI: 10.1007/s10876-020-01859-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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108
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Munagapati VS, Wen HY, Wen JC, Gutha Y, Tian Z, Reddy GM, Garcia JR. Anionic congo red dye removal from aqueous medium using Turkey tail (Trametes versicolor) fungal biomass: adsorption kinetics, isotherms, thermodynamics, reusability, and characterization. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1789468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Venkata Subbaiah Munagapati
- Research Centre for Soil & Water Resources and Natural Disaster Prevention (SWAN), National Yunlin University of Science & Technology, Douliou, Yunlin, Taiwan, ROC
| | - Hsin-Yu Wen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jet-Chau Wen
- Research Centre for Soil & Water Resources and Natural Disaster Prevention (SWAN), National Yunlin University of Science & Technology, Douliou, Yunlin, Taiwan, ROC
- Department and Graduate School of Safety and Environment Engineering, National Yunlin University of Science & Technology, Douliou, Yunlin, Taiwan, ROC
| | - Yuvaraja Gutha
- School of Civil Engineering, Guangzhou University, Guangzhou, PR China
| | - Zhong Tian
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, PR China
| | - Guda Mallikarjuna Reddy
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg, Russian Federation
- Department of Chemistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Jarem Raul Garcia
- Department of Chemistry, State University of Ponta Grossa, Ponta Grossa, Brazil
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109
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Sarkar N, Sahoo G, Swain SK. Nanoclay sandwiched reduced graphene oxide filled macroporous polyacrylamide-agar hybrid hydrogel as an adsorbent for dye decontamination. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.nanoso.2020.100507] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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110
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Saha TK, Bishwas RK, Karmaker S, Islam Z. Adsorption Characteristics of Allura Red AC onto Sawdust and Hexadecylpyridinium Bromide-Treated Sawdust in Aqueous Solution. ACS OMEGA 2020; 5:13358-13374. [PMID: 32548522 PMCID: PMC7288719 DOI: 10.1021/acsomega.0c01493] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
The Allura red AC (ARAC) dye adsorption onto natural sawdust (NSD) and hexadecylpyridinium bromide-treated sawdust (MSD) was investigated in aqueous solution as a function of contact time, solution pH, particle size, adsorbent dosage, dye concentration, temperature, and ionic strength. The adsorbents were characterized by Fourier transform infrared spectroscopy and X-ray diffraction crystallography. The dye adsorption onto both adsorbents was confirmed by field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. The maximum dye adsorption was found within 120 min at pH 2.0 for NSD and pH 3.0 for MSD, respectively, with a particle size of 0-75 μm and an adsorbent dosage of 0.07 g/50 mL ARAC dye solution (50 μmol/L). The batch adsorption kinetic data were followed by the pseudo-second-order kinetic model rather than the pseudo-first-order and Elovich kinetic models. Equilibrium adsorption isotherms were explained by the Langmuir isotherm model, and the maximum extent of adsorption was found to be 52.14 μmol/g for NSD and 151.88 μmol/g for MSD at 55 °C. The values of activation energy (E a) and thermodynamic parameters (ΔG ⧧, ΔH ⧧, ΔS ⧧, ΔG°, ΔH° and ΔS°) proved that the ARAC dye adsorption onto both adsorbents NSD and MSD is a spontaneous-endothermic physisorption process. ARAC (98-99%) was released from dye-loaded adsorbents in aqueous solution (pH ≥ 12) within 120 min. The adsorbents NSD and MSD were reused for a second time without significant loss of their adsorption efficiency.
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Affiliation(s)
- Tapan Kumar Saha
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Raton Kumar Bishwas
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Subarna Karmaker
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Zinia Islam
- Department
of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
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111
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Sahu S, Pahi S, Sahu JK, Sahu UK, Patel RK. Kendu (Diospyros melanoxylon Roxb) fruit peel activated carbon-an efficient bioadsorbent for methylene blue dye: equilibrium, kinetic, and thermodynamic study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:22579-22592. [PMID: 32319052 DOI: 10.1007/s11356-020-08561-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
In this work, activated carbon was synthesized by the carbonization of kendu fruit peel followed by chemical activation using ammonium carbonate as an activating agent to get modified kendu fruit peel (MKFP). The SEM and FESEM images of the biomaterial illustrated a highly porous honeycomb-like structure, further supported by the N2 sorption isotherm analysis. The FTIR spectra specified the presence of oxygen-containing functional groups such as carboxyl, carbonyl, and hydroxyl on the adsorbent surface. Batch experiments were performed for the optimization of methylene blue (MB) dye removal. The adsorption process followed pseudo-second-order kinetic model and Langmuir isotherm model with a maximum adsorption capacity of 144.9 mg g-1. No desorption was found because the adsorbent surface was bonded with the chromophoric group of the MB dye by means of strong chemical interaction evident from the high adsorption energy (E = 10.42 kJ mol-1) and enthalpy change (∆H = 42.7 kJ mol-1). Hence, the MKFP has the potential to act as an efficient bioadsorbent for MB dye removal. Graphical abstract.
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Affiliation(s)
- Sumanta Sahu
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
| | - Souman Pahi
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
| | - Jaya Krushna Sahu
- Department of Chemistry, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, India
| | - Uttam Kumar Sahu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, People's Republic of China
| | - Raj Kishore Patel
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India.
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112
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Development of Porous Titania Structure with Improved Photocatalytic Activity: Response Surface Modeling and Multi-Objective Optimization. NANOMATERIALS 2020; 10:nano10050998. [PMID: 32456158 PMCID: PMC7279558 DOI: 10.3390/nano10050998] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/18/2020] [Accepted: 05/21/2020] [Indexed: 11/16/2022]
Abstract
Porous titania was successfully synthesized by an ultrasound-assisted sol-gel route. The synthesis process was empirically modeled and optimized using the response surface methodology (RSM). Input variables adopted for optimization dealt with the weight ratio of precursors (r) and the sonication time (t), representing the used factors in the synthesis procedure. With regard to application, the synthesized TiO2 samples were tested for the photodegradation of two water-soluble organic pollutants under UV-Vis irradiation. Optimal conditions for the efficient pollutants' photodegradation were found to involve a precursors ratio of 3 and a sonication time of 60 min. Thus, the M5 sample prepared under the founded optimal conditions yielded the maximal removal efficiencies of 98.4% and 46.3% for the photodegradation of CR dye and 2,4-D herbicide, respectively. In addition, the photodegradation kinetics revealed the pseudo first-order rate constants, showing the photodegradation of CR (k1 = 8.86 × 10-2 min-1) by M5 sample is about 1.3-fold faster than the photodegradation of 2,4-D pesticide (k2 = 6.84 × 10-2 min-1).
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113
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Tkaczyk A, Mitrowska K, Posyniak A. Synthetic organic dyes as contaminants of the aquatic environment and their implications for ecosystems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:137222. [PMID: 32084689 DOI: 10.1016/j.scitotenv.2020.137222] [Citation(s) in RCA: 408] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/07/2020] [Accepted: 02/07/2020] [Indexed: 05/18/2023]
Abstract
In recent years interest in the fate of chemical compounds in the aquatic environment has increased. There are many reports of the presence of chemical compounds such as pesticides, steroid hormones or antibiotics in the aquatic environment. At present, little is known about synthetic organic dyes as contaminants of water bodies. These dyes are omnipresent in many application areas from the textile, tannery, cosmetic and food industries to human and veterinary medicine. Their large-scale production and widespread applications have caused synthetic organic dyes to permeate into different compartments of water and soil environment. So far, dyes have been determined in environmental samples such as water, suspended particulate matters, sediment and wild fish. For this reason, they are considered micropollutants of aquatic ecosystems. Due to the toxicological properties and pharmacological activity of some synthetic organic dyes their occurrence in water bodies should be monitored. The hazard potential of synthetic organic dyes should be assessed, especially their influence on aquatic biota, not least because dyes in water ecosystems may pose a threat to animal or human health as higher-order consumers. This review collects scientific data considering application areas, toxicity, sources, environmental occurrence and the fate of synthetic organic dyes and the ecological implications of synthetic organic dyes presence in the total environment. Moreover, analytical methods for dye determination and methods for dye removal from wastewater are described.
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Affiliation(s)
- Angelika Tkaczyk
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
| | - Kamila Mitrowska
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
| | - Andrzej Posyniak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
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114
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Micellar-Enhanced Ultrafiltration to Remove Nickel Ions: A Response Surface Method and Artificial Neural Network Optimization. WATER 2020. [DOI: 10.3390/w12051269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nickel ions from aqueous solutions were removed by micellar-enhanced ultrafiltration (MEUF), using the surfactant sodium dodecyl sulfate (SDS) as a chelating agent. Process variables and indicators were modeled and optimized by a response surface methodology (RSM), using the Box–Behnken design (BBD). The generated quadratic models described the relationship between a performance indicator (nickel rejection rate or permeate flux) and process variables (pressure, nickel concentration, SDS concentration, and molecular weight cut-off (MWCO)). The analysis of variance (ANOVA) showed that both models are statistically significant. To remove 1 mM of nickel ions, the optimal condition for maximum nickel removal and flux were: pressure = 30 psi, CSDS = 10.05 mM, and MWCO = 10 kDa, resulting in a rejection rate of 98.16% and a flux of 119.20 L/h∙m2. Experimental verification indicates that the RSM model could adequately describe the performance indicators within the examined ranges of the process variables. An artificial neural network (ANN) modelling followed to predict the MEUF performance and validate the RSM results. The obtained ANN models showed good fitness to the experimental data.
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115
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Gautam RK, Tiwari I. Humic acid functionalized magnetic nanomaterials for remediation of dye wastewater under ultrasonication: Application in real water samples, recycling and reuse of nanosorbents. CHEMOSPHERE 2020; 245:125553. [PMID: 31862552 DOI: 10.1016/j.chemosphere.2019.125553] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/01/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
Water pollution by industrial sector is a great problem which hampers the sustainable development goals. Dye containing water effluent poses vast challenge to clean water before its discharge in to the surrounding ecosystem. Herein, we prepared humic acid functionalized Fe3O4 nanosorbents through an eco-friendly route and applied for decolorization of carcinogenic dye from water. The nanosorbents was characterized by AFM, BET surface area analyzer, FTIR, SEM-EDX, TEM, TGA/DTG, VSM and XRD. Adsorption experiments were conducted by taking the appropriate amount of dye in different sources of water under ultrasonication. Adsorption process was controlled by chemisorption in nature making pseudo-second-order model most suitable. Multilayer adsorption was taking place on the active sites of nanosorbents showing applicability of Freundlich isotherm model with highest adsorbed amount of 199.986 mg g-1 at 323 K. Rise in temperature favors the remediation of colored effluent thus positive value of ΔH° (74.234 kJ mol-1) and negative value of ΔG° shows endothermic and spontaneous nature of adsorption system. Cationic surfactant CTAB favors the adsorption (<80%) while anionic SDS gives very low removal (>48%) because of the micelle formation at the surface of nanosorbents. Decolorization from real water samples shows that the adsorption of malachite green was 97, 90, 91, 87, and 86% for Ganga river water, tap water, well water, hand pump water and submersible water, respectively. The used Fe3O4/HA nanosorbents was easily recycled from water samples through 0.1 M HCl and nanosorbents was used up to five cycles with greater percentage of removal at 85%.
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Affiliation(s)
- Ravindra Kumar Gautam
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 211005, India.
| | - Ida Tiwari
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 211005, India.
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116
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Maleš L, Fakin D, Bračič M, Gorgieva S. Efficiency of Differently Processed Membranes Based on Cellulose as Cationic Dye Adsorbents. NANOMATERIALS 2020; 10:nano10040642. [PMID: 32235489 PMCID: PMC7221949 DOI: 10.3390/nano10040642] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 01/16/2023]
Abstract
In order to minimize the pollution caused by the reuse of textile dyes, technologies and materials have been developed that purify waste water in an efficient and cost-effective manner before it is discharged into a water body. In this context, the presented research investigates the potential of two types of fully cellulose-based membranes as adsorbents for cationic dyes used in the textile industry. The first type combines cellulose nanofibrils (CNFs) and carboxymethylated cellulose (CMC) using the solvent casting process and an esterification coupling reaction, while the second type uses commercial bacterial cellulose (BC) in a native and sodium periodate-treated form (BCox). The corresponding membranes were comprehensively evaluated by means of Fourier Transform Infrared (FTIR) Spectroscopy. Results confirm the esterification process within the CNF/CMC membranes, as well as BC oxidation after periodate treatment, as shown by bands at 1726.2 cm−1 and 895 cm−1, respectively. The Potentiometric Titration shows the highest total negative charge of 1.07 mmol/g for 4CNF/4CMC, which is assigned to the presence of COO− within CMC polymers, and lowest (0.21 mmol/g) for BCox. The Contact Angle Goniometry data confirm the hydrophilicity of all membranes, and the angle increased from 0 ° (in pure BC) to 34.5 ° in CMC-rich and to 31.4 ° in BCox membranes due to the presence of CH2COO− and CHO groups, respectively. Confocal Fluorescent Microscopy (CFM) demonstrated the highest µ-roughness in 4CNF/4CMC, while Scanning Electron Microscopy (SEM) depicted diverse morphological features between the membranes, from ultrafine nanofiber networks (in BC and BCox) to larger fiber bundles connected within the polymer phase in CNF/CMC membranes. The adsorption experiment followed by UV–VIS spectroscopy, showed ~100% dye removal efficiency in both CNF/CMC-based membranes, while BC and BCox adsorbed only 24.3% and 23.6%, respectively, when anthraquinone dye was used. Azo dye was only adsorbed with an efficiency of 7–9% on CMC/CNF-based membranes, compared with 5.57% on BC and 7.33% on BCox membranes. The adsorption efficiency at equilibrium was highest for BC (1228 mg/g) and lowest for 7CNF/1CMC (419.24 mg/g) during anthraquinone dye adsorption. In the case of azo dye, the BCox was most effective, with 445.7 mg/g. Applicability of a pseudo second-order model was confirmed for both dyes and all membranes, except for BCox in combination with azo dye, showing the fastest adsorption rate in the case of the 7CNF/1CMC membrane.
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Affiliation(s)
- Laura Maleš
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia; (L.M.); (D.F.); (M.B.)
| | - Darinka Fakin
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia; (L.M.); (D.F.); (M.B.)
| | - Matej Bračič
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia; (L.M.); (D.F.); (M.B.)
| | - Selestina Gorgieva
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia; (L.M.); (D.F.); (M.B.)
- Institute of Automation, Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia
- Correspondence: ; Tel.: +38-6222-07924; Fax: +38-6222-07990
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Ai Y, Lee S, Lee J. Drinking water treatment residuals from cyanobacteria bloom-affected areas: Investigation of potential impact on agricultural land application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:135756. [PMID: 31940734 DOI: 10.1016/j.scitotenv.2019.135756] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 05/22/2023]
Abstract
In cyanobacteria bloom-affected areas, drinking water treatment processes are optimized to ensure the absence of cyanotoxins in their finished water. A concern about the sludge generated from water treatment has emerged because the removed cyanotoxins and cyanobacteria can get concentrated in the sludge, called water treatment residuals (WTR), and these WTR are often applied on land for beneficial purposes. However, the impact of WTR from bloom-affected areas on the agricultural application and public health is hardly reported. The objective of this study was to characterize bloom-affected WTR by focusing on cyanotoxins, toxin-producing cyanobacteria, microbiomes, and resistome profiles. In addition, the fate of WTR-originated microcystin in crops and soil was examined. WTR samples were obtained from a bloom-affected area in Ohio, USA in November 2017. Cyanotoxins and toxin-producing cyanobacteria were quantified with the enzyme-linked immunosorbent assay and droplet digital PCR, respectively. Microbiome and resistome were determined with Nanopore sequencing. Cyanotoxin concentrations were measured: microcystin (259 μg/kg), saxitoxin (0.16 μg/kg), anatoxin-a (not detected), and β-Methylamino-L-alanine (BMAA) (575 μg/kg). MC-producing cyanobacteria concentrations were determined: Planktothrix (5.3 × 107 gene copies/g) and Microcystis (3.3 × 103 gene copies/g). Proteobacteria was the most predominant and Planktothrix phage was a remarkably dominant virus in the WTR microbiome. Aminoglycoside resistance was the most abundant class, and antibiotic resistance was found in multiple pathogens (e.g. Mycobacterium). WTR land application was simulated by growing carrots with a mixture of WTR and soil in a greenhouse. At harvest, ~80% of WTR-originated microcystin was found in the soil (83-96 μg/kg) and 5% accumulated in carrots (19-28 μg/kg). This study provides the first insight into the cyanotoxin, microbiome, and resistome profile of bloom-affected WTR. Our finding suggests that careful WTR management is needed for the beneficial use of WTR for protecting agricultural environments, especially soil and groundwater, and food safety.
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Affiliation(s)
- Yuehan Ai
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, USA
| | - Seungjun Lee
- College of Public Health, Division of Environmental Health Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Jiyoung Lee
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, USA; College of Public Health, Division of Environmental Health Sciences, The Ohio State University, Columbus, OH 43210, USA.
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118
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Solomon D, Kiflie Z, Van Hulle S. Using Box–Behnken experimental design to optimize the degradation of Basic Blue 41 dye by Fenton reaction. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2020. [DOI: 10.1007/s40090-020-00201-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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119
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Hu P, Xi Z, Li Y, Li A, Yang H. Evaluation of the structural factors for the flocculation performance of a co-graft cationic starch-based flocculant. CHEMOSPHERE 2020; 240:124866. [PMID: 31546191 DOI: 10.1016/j.chemosphere.2019.124866] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/08/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Three series of co-graft cationic starch (St)-based flocculants with distinct structural characteristics, namely, charge density (CD), graft-chain length (L), and graft-chain distribution (N), were successfully synthesized through graft copolymerization of [(2-methacryloyloxyethyl) trimethyl ammonium chloride] and acrylamide. These St-based flocculants with different molecular structures were used to flocculate various kaolin suspensions with different initial turbidities and a sodium humate (NaHA) aqueous solution. The experimental results indicated that CD contributed to flocculation evidently, whereas average L and its N were insignificant in experimentally measured ranges. On the basis of phenomenological theory, a second-order polynomial equation was used to further quantitatively analyze the effects of the three structural factors on the flocculation performance of these St-based flocculants, which were fully consistent with the experimental results. Besides, the optimal dose and its corresponding removal rate could be predicted exactly, and the flocculation mechanisms were discussed in detail according to the established models. With the combination of floc properties and zeta potentials, the flocculation mechanisms of these St-based flocculants for flocculation of kaolin suspensions and NaHA aqueous solution were mainly ascribed to charge patching and simple charge neutralization, respectively. These results improve the understanding of the structure-activity relationship of these graft St-based flocculants, which is of significant guidance for the utilization and design of novel flocculants.
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Affiliation(s)
- Pan Hu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Zhonghua Xi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
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120
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Chen J, Xiong Y, Duan M, Li X, Li J, Fang S, Qin S, Zhang R. Insight into the Synergistic Effect of Adsorption-Photocatalysis for the Removal of Organic Dye Pollutants by Cr-Doped ZnO. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:520-533. [PMID: 31886673 DOI: 10.1021/acs.langmuir.9b02879] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The adsorption of dye molecules is an important process for the photodegradation removal of dye pollutants. In this work, a semiconductor photocatalyst of Cr-doped ZnO nanorods (Cr-ZnO NRs) was synthesized, and its adsorption-photocatalysis synergy (APS) effect was investigated for anionic methyl orange (MO-) and cationic methylene blue (MB+). The detailed thermodynamic information (including adsorption maximum capacity qmax, adsorption equilibrium constant Kads and adsorption efficiency AE %) and dynamic information (including adsorption rate constant ka, degradation rate constant kd and degradation efficiency DE %) were obtained to evaluate the different reaction performances for MO- and MB+. With qmax(MB+) = 40.59 mg g-1 > qmax(MO-) = 15.95 mg g-1, ka(MB+) = 20.61 min-1 > ka(MO-) = 4.62 min-1, and AE(MB+) = 40% > AE(MO-) = 9%, Cr-ZnO NRs showed much superior adsorption performance for MB+ than MO-. With kd (MB+) = 0.0430 min-1 > kd (MO-) = 0.0014 min-1 and DE(MB+) = 98% > AE(MO-) = 20%, Cr-ZnO NRs also showed much superior photodegradation performance for MB+ than MO-. The APS mechanism of Cr-ZnO NRs is revealed to be multiple π-π interactions and stronger electrostatic attractions dominant for enhanced adsorption of MB+ and higher AE and more photocatalytic active species dominant for enhanced photodegradation of MB+. The APS was furthermore characterized and verified by zeta potential analysis, Fourier transform infrared investigation, and fluorescence imaging. The results indicate that Cr-ZnO NRs are promising adsorbent and photocatalyst candidates favorable for positive MB+ than negative MO-. Such an APS investigation can effectively help to improve the photodegradation treatment performance of photocatalysts for dye pollutant removal.
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Affiliation(s)
- Jie Chen
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Yan Xiong
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
- Compiègne University of Technology , CNRS Institute for Enzyme and Cell Engineering , Rue Roger Couttolenc, CS 60319 , 60203 Compiégne Cedex , France
| | - Ming Duan
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Xiang Li
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Jun Li
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Sha Qin
- School of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , China
| | - Run Zhang
- Australian Institute for Bioengineering and Nanotechnology, AIBN , The University of Queensland , St Lucia , Brisbane , Queensland 4072 , Australia
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121
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Synthesis of the Hydrophobic Cationic Polyacrylamide (PADD) Initiated by Ultrasonic and its Flocculation and Treatment of Coal Mine Wastewater. Processes (Basel) 2020. [DOI: 10.3390/pr8010062] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, a new type of hydrophobic cationic polyacrylamide P (AM-DMC-DABC) (PADD) was synthesized by ultrasonic (US)-initiated polymerization, which is used for the separation and removal of coal mine wastewater. The acrylamide (AM), methacryloyloxyethyl trimethyl ammonium chloride (DMC) and acryloyloxyethyl dimethylbenzyl ammonium chloride (DABC) were used as monomers to prepare). The factors that affecting the US initiated polymerization of PADD were analyzed. Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H NMR) and scanning electron microscopy (SEM) were used to characterize the chemical structure, thermal decomposition performance and surface morphology of the polymers. FT-IR and 1H NMR results showed that PADD was successfully synthesized. In addition, irregular porous surface morphology of PADD were observed by SEM analysis. Under the optimum conditions (pH = 7.0, flocculant dosage = 16.0 mg/L), the excellent flocculation performance (turbidity removal rate (TR) = 98.8%), floc size d50 = 513.467 μm, fractal dimension (Df) = 1.61, flocculation kinetics (KN0) = 27.24 × 10−3·s−1) was obtained by using high-efficiency flocculant PADD. Zeta potential analysis was used to further explore the possible flocculation mechanism of removal. The zeta potential and flocculation analytical results displayed that the flocculation removal process of coal mine wastewater mainly included hydrophobic effect, adsorption, bridging and charge neutralization, and electric patching when PADD was used. The PADD showed more excellent coal mine wastewater flocculation performance than PAD, commercial cationic polyacrylamide (CPAM) CCPAM and PAM. Thus PADD, with its good flocculation effect on coal mine wastewater under relatively wide pH range, had bright practical application value.
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122
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Hao L, Gao W, Yan S, Niu M, Liu G, Hao H. Functionalized diatomite/oyster shell powder doped electrospun polyacrylonitrile submicron fiber as a high-efficiency adsorbent for removing methylene blue from aqueous solution: Thermodynamics, kinetics and isotherms. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112022] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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123
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Wang Q, Chen J. Recovery of EDTA from soil-washing wastewater with calcium-hydroxide-enhanced sulfide precipitation. CHEMOSPHERE 2019; 237:124286. [PMID: 31349960 DOI: 10.1016/j.chemosphere.2019.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 06/29/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
It is cost effective and thermodynamically feasible to recover EDTA and remove potential toxic elements (PTEs) with sulfide precipitation from soil-washing wastewater produced from EDTA washing PTEs-contaminated soil. However, poor solid-liquid separation and EDTA recovery restrict its application due to a large number of fine particles formed during the precipitation process. This study investigated the effect of single factor on PTEs (Cu, Pb, Cd, and Zn) removal and solid-liquid separation from wastewater. The results showed that Zn was the most difficult to remove compared with Cu, Pb, and Cd; with the aid of Ca(OH)2, Zn removal efficiency was improved from 22.16% to 92.45%, and over 70.98 min, its average rate was 4.2 times that obtained without Ca(OH)2 dosage; undissolved Ca(OH)2 adsorbed suspended particles, acted as condensation nucleus, and promoted similar flocculation effect (self-flocculation); dissolved Ca(OH)2 modified the charge on the surface of suspended particles by changing the zeta potential from -36.77 ± 1.2 mV to -25.39 ± 3.06 mV and weakened the electrostatic repulsion between the suspended particles, and promoted their adsorption and flocculation precipitation, thereby improving the solid-liquid separation. The acid-recovered EDTA was analyzed in the protonated form (H4EDTA) using Fourier transform infrared (FT-IR) spectroscopy, and it maintained the same ability to extract PTEs from the soil as that of fresh EDTA over several cycles. This indicates that Ca(OH)2-enhanced sulfide precipitation can effectively treat soil-washing wastewater and recover EDTA and potentially reduce the cost of remediation techniques for PTEs-contaminated soil with EDTA-enhanced soil washing.
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Affiliation(s)
- Qingwei Wang
- Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing, 100875, PR China
| | - Jiajun Chen
- Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing, 100875, PR China.
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124
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Aljabri MD, Gosavi NM, Jones LA, Morajkar PP, La DD, Bhosale SV. Arginine-Induced Self-Assembly of Protoporphyrin to Obtain Effective Photocatalysts in Aqueous Media Under Visible Light. Molecules 2019; 24:molecules24224172. [PMID: 31752075 PMCID: PMC6891641 DOI: 10.3390/molecules24224172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/10/2019] [Accepted: 11/15/2019] [Indexed: 11/16/2022] Open
Abstract
The fabrication of controlled supramolecular nanostructures via self-assembly of protoporphyrin IX (PPIX) was studied with enantiomerically pure l-arginine and d-arginine, and we have shown that stoichiometry controlled the morphology formed. The nanostructure morphology was mainly influenced by the delicate balance of π-π stacking interactions between PPIX cores, as well as H-bonding between the deprotonated acidic head group of PPIX with the guanidine head group of arginine. PPIX self-assembled with l-/d-arginine to create rose-like nanoflower structures for four equivalents of arginine that were 5–10 μm in length and 1–4 μm diameter. We employed UV-vis, fluorescence spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), dynamic light scattering (DLS) and Fourier transform infrared spectroscopy (FT-IR) techniques to characterize the resulting self-assembled nanostructures. Furthermore, we investigated the catalytic activity of PPIX and arginine co-assembled materials. The fabricated PPIX–arginine nanostructure showed high enhancement of photocatalytic activity through degradation of rhodamine B (RhB) with a decrease in dye concentration of around 78–80% under simulated visible radiation.
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Affiliation(s)
- Mahmood D. Aljabri
- School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia;
| | - Nilesh M. Gosavi
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa 403206, India; (N.M.G.); (P.P.M.)
| | - Lathe A. Jones
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia;
| | - Pranay P. Morajkar
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa 403206, India; (N.M.G.); (P.P.M.)
| | - Duong D. La
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Vietnam;
| | - Sheshanath V. Bhosale
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa 403206, India; (N.M.G.); (P.P.M.)
- Correspondence: ; Tel.: +91-(0866)-960-9303
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125
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Nazlabadi E, Alavi Moghaddam MR, Karamati-Niaragh E. Simultaneous removal of nitrate and nitrite using electrocoagulation/floatation (ECF): A new multi-response optimization approach. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 250:109489. [PMID: 31505385 DOI: 10.1016/j.jenvman.2019.109489] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/19/2019] [Accepted: 08/27/2019] [Indexed: 06/10/2023]
Abstract
This study aims to remove both nitrate and nitrite from wastewater as well as modeling and simultaneous optimizing the electrocoagulation/floatation (ECF) process with 3 responses, namely, the residual nitrate, the residual nitrite and the operating costs; so that all responses meet the standard limitations. For this purpose, 57 experiments designed by the response surface method (RSM) were carried out. The effect of selected variables, including initial pH, current intensity, initial nitrate concentration, number of electrodes, reaction time and their interactions were evaluated. The analysis of variance (ANOVA) confirmed that the predicted equations were in reasonable agreement with the experimental data for three responses. To reach a new multi-response optimization approach, a code was developed in MATLAB software, which was applied to optimize the responses all together. Eight optimized conditions were obtained in accordance with the residual nitrate and the residual nitrite of less than 50 mg/L and 10 mg/L, respectively, and the limited operating costs to 10 ± 0.05 US$/(kg NO3-removed).
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Affiliation(s)
- Ebrahim Nazlabadi
- Department of Civil & Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran
| | | | - Elnaz Karamati-Niaragh
- Department of Civil & Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran
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126
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Solomon D, Kiflie Z, Van Hulle S. Kinetic investigation and optimization of a sequencing batch reactor for the treatment of textile wastewater. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s41204-019-0062-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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127
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Choi D, Oh JI, Lee J, Park YK, Lam SS, Kwon EE. Valorization of alum sludge via a pyrolysis platform using CO 2 as reactive gas medium. ENVIRONMENT INTERNATIONAL 2019; 132:105037. [PMID: 31437646 DOI: 10.1016/j.envint.2019.105037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/16/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
In an effort to seek a new technical platform for disposal of drinking water treatment sludge (DWTS: alum sludge), pyrolysis of DWTS was mainly investigated in this study. To establish a more sustainable thermolytic platform for DWTS, this study particularly employed CO2 as reactive gas medium. Thus, this study laid great emphasis on elucidating the mechanistic roles of CO2 during the thermolysis of DWTS. A series of the TGA tests of DWTS in CO2 in reference to N2 revealed no occurrence of the heterogeneous reaction between CO2 and the sample surface of DWTS. As such, at the temperature regime before initiating the Boudouard reaction (i.e., ≥700 °C), the mass decay patterns of DWTS in N2 and CO2 were nearly identical. However, the gaseous effluents from lab-scale pyrolysis of DWTS in CO2 in reference to N2 were different. In sum, the homogeneous reactions between CO2 and volatile matters (VMs) evolved from the thermolysis of DWTS led to the enhanced generation of CO. Also, CO2 suppressed dehydrogenation of VMs. Such the genuine mechanistic roles of CO2 in the thermolysis of DWTS subsequently led to the compositional modifications of the chemical species in pyrolytic oil. Furthermore, the biochar composite was obtained as byproduct of pyrolysis of DWTS. Considering that the high content of Al2O3 and Fe-species in the biochar composite imparts a strong affinity for As(V), the practical use of the biochar composite as a sorptive material for arsenic (V) was evaluated at the fundamental levels. This work reported that adsorption of As(V) onto the biochar composite followed the pseudo-second order model and the Freundlich isotherm model.
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Affiliation(s)
- Dongho Choi
- Department of Environment and Energy, Sejong University, Seoul 05005, Republic of Korea
| | - Jeong-Ik Oh
- Advanced Technology Department, Land & Housing Institute, Daejeon 34047, Republic of Korea
| | - Jechan Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Su Shiung Lam
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China; Pyrolysis Technology Research Group, School of Ocean Engineering, University Malaysia Terengganu, Kuala Nerus, 21030 Terengganu, Malaysia
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05005, Republic of Korea.
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128
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Sreekanth TVM, Nagajyothi PC, Reddy GR, Shim J, Yoo K. Urea assisted ceria nanocubes for efficient removal of malachite green organic dye from aqueous system. Sci Rep 2019; 9:14477. [PMID: 31597923 PMCID: PMC6785541 DOI: 10.1038/s41598-019-50984-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 09/18/2019] [Indexed: 11/25/2022] Open
Abstract
This study describes a simple, high-yield, rapid, and inexpensive route for the synthesis of cubic shape-like cerium oxide nanocubes (CeO2 NCs) using different urea concentrations (0.5, 1.0, and 2.0 g) by the hydrothermal method. The synthesized nanocubes (NCs) are labeled as CeO2 NCs-0.5, CeO2 NCs-1.0, and CeO2 NCs-2.0, corresponding to 0.5, 1.0, and 2.0 g of urea, respectively. The synthesized NCs were characterized by FT-IR, UV-visible, XRD, XPS, SEM and HR-TEM analysis. The synthesized NCs were cubic in shape with average sizes of 12, 12, and 13 nm for the CeO2 NCs-0.5, CeO2 NCs-1.0, and CeO2 NCs-2.0, respectively, obtained by the XRD analysis. The catalytic activity of the CeO2 NCs was studied for the purpose of obtaining the reduction of malachite green (MG) in the presence of sodium borohydride (NaBH4) at room temperature.
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Affiliation(s)
| | | | | | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Kisoo Yoo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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129
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Ashrafi SD, Kamani H, Safari GH. Evaluation of Basic blue 41 removal from aqueous solutions by laccase mediated system using response surface methodology. CASPIAN JOURNAL OF HEALTH RESEARCH 2019. [DOI: 10.29252/cjhr.4.4.99] [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] Open
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130
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Investigation of a Gas Hydrate Dissociation-Energy-Based Quick-Freezing Treatment for Sludge Cell Lysis and Dewatering. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16193611. [PMID: 31561567 PMCID: PMC6801637 DOI: 10.3390/ijerph16193611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/17/2019] [Accepted: 09/23/2019] [Indexed: 11/16/2022]
Abstract
A gas Hydrate dissociation-energy-based Quick-Freezing treatment (HbQF) was applied for sewage sludge cell rupture and dewatering. Carbon dioxide (CO2) and water (H2O) molecules in sewage create CO2 gas hydrates, and subsequently the sludge rapidly freezes by releasing the applied pressure. Cell rupture was observed through a viability evaluation and leachate analysis. The decreased ratios of live cell to dead cells, increased osmotic pressure, and increased conductivity showed cell lysis and release of electrolytes via HbQF. The change in physicochemical properties of the samples resulting from HbQF was investigated via zeta potential measurement, rheological analysis, and particle size measurement. The HbQF treatment could not reduce the sludge water content when combined with membrane-based filtration post-treatment because of the pore blocking of fractured and lysed cells; however, it could achieve sludge microbial cell rupture, disinfection, and floc disintegration, causing enhanced reduction of water content and enhanced dewatering capability via a sedimentation post process. Furthermore, the organic-rich materials released by the cell rupture, investigated via the analysis of protein, polysaccharide, total organic carbon, and total nitrogen, may be returned to a biological treatment system or (an) aerobic digester to increase treatment efficiency.
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131
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Partovi E, Bahrami A, AfKhami A, Ghorbani Shahna F, Ghamari F, Farhadian M. Development of Membrane Hollow Fiber for Determination of Maleic Anhydride in Ambient Air as a Field Sampler. Ann Work Expo Health 2019; 63:797-805. [PMID: 31278410 DOI: 10.1093/annweh/wxz052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 05/14/2019] [Accepted: 05/25/2019] [Indexed: 11/14/2022] Open
Abstract
This research develops a rapid method for sampling and analysis of maleic anhydride (MA) in air using a one-step hollow fiber (HF) membrane in the liquid phase followed by high-performance liquid chromatography. A sampling chamber was prepared for sampling of MA with HF-supported de-ionized water absorbency. Several important parameters, such as sampling flow rate, sampling time, and breakthrough volume (BTV), were optimized at different concentrations using a central composite design. The results showed that sampling could be performed at the maximum period of 4 h with a flow rate of 1 mL min-1 for different concentrations (in the range of 0.05-2 mg m-3). The BTV was 240 mL. The relative standard deviations for the repeatability of interday and intraday were 7-10%, 10%, respectively, and the pooled standard deviation was 0.088. The limit of detection and limit of quantitation values were 0.033 and 0.060 mg m-3, respectively. Moreover, our findings revealed that the samples could be stored in sealed HF flexible plastic tubes in a cover at refrigerator temperature (4°C) for up to 7 days. The HF method was compared with method number 3512 National Institute Occupational Safety and Health for determination of MA. There was a good correlation (R2 = 0.99) between the two methods at a concentration of 0.05 to 2 mg m-3 in the laboratory and the average concentration of MA for both methods was 0.11 mg m-3 in the ambient air at an adhesive manufacturer. Our findings indicated that the proposed HF can act as a reliable, rapid, and effective approach for sampling of MA in workplaces.
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Affiliation(s)
- Ehsan Partovi
- Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abdulrahman Bahrami
- Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abbas AfKhami
- Department of Analytical Chemistry, Bu-Ali Sina University, Hamadan, Iran
| | - Farshid Ghorbani Shahna
- Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farhad Ghamari
- Department of Environmental Health Engineering, Faculty of Health, Arak University of Medical Sciences, Arak, Iran
| | - Maryam Farhadian
- Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
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132
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Ismail M, Wu Z, Zhang L, Ma J, Jia Y, Hu Y, Wang Y. High-efficient synergy of piezocatalysis and photocatalysis in bismuth oxychloride nanomaterial for dye decomposition. CHEMOSPHERE 2019; 228:212-218. [PMID: 31029967 DOI: 10.1016/j.chemosphere.2019.04.121] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 04/14/2019] [Accepted: 04/15/2019] [Indexed: 05/25/2023]
Abstract
In this work, it is found that the hydrothermally-synthesized bismuth oxychloride can behave both the piezocatalysis and photocatalysis for the Rhodamine B dye decomposition. ∼99% decomposition efficiency is achieved after both vibrating and lighting the Rhodamine B dye solution for ∼96 min with the addition of bismuth oxychloride catalyst, while the ∼72% and ∼26% decomposition efficiencies are obtained for only photocatalysis or only piezocatalysis respectively. In bi-catalysis, the mechanical strain produced due to vibration will directly provide an electric field that will increase the separation between the photo-induced electron-hole pairs, yielding to the enhanced decomposition performance of bi-catalysis. There is no significant change in the bi-catalytic performance of bismuth oxychloride nanomaterial observed after being recycled four times. Bismuth oxychloride catalyst is potential for the bi-catalytic decomposition treatment of wastewater through harvesting both the environmental vibration energy and light energy.
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Affiliation(s)
- Muhammad Ismail
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China; Department of Physics, Zhejiang Normal University, Jinhua, 321004, China
| | - Zheng Wu
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
| | - Luohong Zhang
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, China.
| | - Jiangping Ma
- Department of Physics, Zhejiang Normal University, Jinhua, 321004, China
| | - Yanmin Jia
- School of Science, Xi'an University of Posts & Telecommunications, Xi'an, 710121, China; Department of Physics, Zhejiang Normal University, Jinhua, 321004, China.
| | - Yongming Hu
- Hubei Key Laboratory of Ferro- & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062, China
| | - Yaojin Wang
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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133
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Willow tree-like functional groups modified magnetic nanoparticles for ultra-high capacity adsorption of dye. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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134
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Azizkhani M, Faghihian H. Application of a novel adsorbent prepared using magnetized Spirulina platensis algae modified by potassium nickel hexacyanoferrate for removal of cesium, studied by response surface methodology. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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135
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Enhanced adsorption performance of Reactive Red 120 azo dye from aqueous solution using quaternary amine modified orange peel powder. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.081] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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136
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Cardoso CMM, Zavarize DG, Lago PDA, Pedroza MM, Brum SS, Mendonça ARV. Evaluating adsorbent properties of drinking water treatment plant sludge-based carbons activated by K2CO3/CH3COOH: a low-cost material for metal ion remediation. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0709-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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137
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Heravizadeh OR, Khadem M, Nabizadeh R, Shahtaheri SJ. Synthesis of molecularly imprinted nanoparticles for selective exposure assessment of permethrin: optimization by response surface methodology. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:393-406. [PMID: 31321053 PMCID: PMC6582030 DOI: 10.1007/s40201-019-00358-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 02/18/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Extensive use of high-efficiency pyrethroid pesticides as pest-control agents lead to remarkable adsorption and release of these materials in soil and aquatic environment which could have serious adverse effects on water and food chain quality as well as human health. In this study, a molecularly imprinted polymer was synthesized and used as a selective sorbent in the sample preparation procedure in order to facilitate sensitive and quantitative exposure assessment of insecticide permethrin. METHODS Molecular imprinted nanoparticles were prepared by precipitation polymerization technique using 1:4:20 mmol ratio of the template, functional monomer, and cross-linker, respectively, as well as 80 mL of chloroform as progen solvent. The obtained nanoparticles were characterized by field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectrometry (FT-IR). The optimization of critical variables in the MISPE process was done using the central composite design (CCD) of the response surface methodology. RESULTS Quadratic regressional models were developed to correlate the response and independent variables and the analysis of variance (ANOVA) verified the excellent fitting of proposed models for experimental data. Optimum conditions for the highest MISPE yield were selected as follow: sorbent mass of 7.71 mg, sample pH 5.58 and 5.68 for cis and trans-permethrin, respectively, sample flow rate of 0.6 mL/min, as well as 5 and 3.94 mL of methanol/acetic acid at the flow rate of 2 mL/min as elution solvents for cis and trans-permethrin, respectively. Under optimized conditions, the linear range was obtained 20-120 μg/L (R2 = 0.99) and the detection limits were 5.51 and 5.72 μg/L for cis and trans-permethrin, respectively. Analysis of real samples demonstrated the high extraction efficiency of designed protocol ranging from 93.01 to 97.14 with the relative standard deviation (RSD) less than 4.51%. CONCLUSIONS The satisfactory results confirmed the reliability and efficiency of the proposed method for trace analysis of permethrin isomers in biological and environmental samples.
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Affiliation(s)
- Omid Reza Heravizadeh
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Monireh Khadem
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Nabizadeh
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Jamaleddin Shahtaheri
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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138
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Iqbal MA, Ali SI, Amin F, Tariq A, Iqbal MZ, Rizwan S. La- and Mn-Codoped Bismuth Ferrite/Ti 3C 2 MXene Composites for Efficient Photocatalytic Degradation of Congo Red Dye. ACS OMEGA 2019; 4:8661-8668. [PMID: 31459955 PMCID: PMC6648404 DOI: 10.1021/acsomega.9b00493] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/16/2019] [Indexed: 05/24/2023]
Abstract
Over the years, scarcity of fresh potable water has increased the demand for clean water. Meanwhile, with the advent of nanotechnology, the use of nanomaterials for photocatalytic degradation of pollutants in wastewaters has increased. Herein, a new type of nanohybrids of La- and Mn-codoped bismuth ferrite (BFO) nanoparticles embedded into transition-metal carbide sheets (MXene-Ti3C2) were prepared by a low-cost double-solvent sol-gel method and investigated for their catalytic activity in dark and photoinduced conditions. The photoluminescence results showed that pure BFO has the highest electron hole recombination rate as compared to all the codoped BFO/Ti3C2 nanohybrids. The higher electron-hole pair generation rate of the nanohybrids provides a suitable environment for fast degradation of organic dye molecules. The band gap of the prepared nanohybrid was tuned to 1.73 eV. Moreover, the BLFO/Ti3C2 and BLFMO-5/Ti3C2 degraded 92 and 93% of the organic pollutant, respectively, from water in dark and remaining in the light spectrum. Therefore, these synthesized nanohybrids could be a promising candidate for catalytic and photocatalytic applications in future.
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Affiliation(s)
- M. Abdullah Iqbal
- Physics
Characterization and Simulations Lab, Department of Physics, School
of Natural Sciences (SNS), National University
of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - S. Irfan Ali
- Shenzhen Key Laboratory of Advanced
Thin Films and Applications,
College of Physics and Energy, and Key Laboratory of Optoelectronic Devices and
Systems of Ministry of Education and Guangdong Province, College of
Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Faheem Amin
- Physics
Characterization and Simulations Lab, Department of Physics, School
of Natural Sciences (SNS), National University
of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Ayesha Tariq
- Physics
Characterization and Simulations Lab, Department of Physics, School
of Natural Sciences (SNS), National University
of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Muhammad Z. Iqbal
- Department
of Chemical and Petroleum Engineering, United
Arab Emirates University (UAEU), P.O.
Box 15551, Al-Ain, United Arab
Emirates
| | - Syed Rizwan
- Physics
Characterization and Simulations Lab, Department of Physics, School
of Natural Sciences (SNS), National University
of Sciences and Technology (NUST), Islamabad 44000, Pakistan
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139
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Liang J, Ning XA, Song J, Lu X, Sun J, Zhang Y. Treatment of 3,3'-dimethoxybenzidine in sludge by advance oxidation process: Degradation products and toxicity evaluation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 238:102-109. [PMID: 30849594 DOI: 10.1016/j.jenvman.2018.11.135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 09/03/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Studies on the oxidation products of organic pollutants and their toxicity in textile dyeing sludge after the sludge was treated by the advance oxidation processes were limited, since textile dyeing sludge was a complicated mixture. For the first time, simulated sludge was used to study the degradation mechanism of 3,3'-dimethoxybenzidine (DMB) during the combined ultrasound-Mn(VII) treatment. The toxicity of DMB and its products was also evaluated. The results indicated that the compositions and microstructures of polyaluminium chloride (PAC)- and polyferric sulphate (PFS)-based simulated sludge were similar to those of real textile dyeing sludge. The optimum conditions of ultrasound-Mn(VII) treatment were: a KMnO4 dosage of 40 μM, an ultrasound power density of 0.36 W cm-3, and a reaction time of 20 min. 98.24% of DMB and 63.04% of total organic carbon (TOC) in the simulated sludge were removed. Six products, that is, 2-nitroanisole, 3-methoxy-4-nitrophenol, vanillylmandelic acid, vanillyl alcohol, m-anisic acid, and benzoic acid, were identified by GC-MS and LC-MS-MS. It was noted that all of these identified products were also detected in the real textile dyeing sludge after the ultrasound-Mn(VII) treatment. All of them were less toxic than DMB. Moreover, 53.30% and 54.80% of toxicity toward the alga Desmodesmus subspicatus and the bacterium Vibrio fischeri were removed in simulated sludge, respectively. Therefore, simulated sludge was helpful for studying a pollutant's degradation mechanism in the complex sludge mixtures. The results would also provide some useful suggestions for the sludge disposal after the sludge was treated by the advance oxidation processes.
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Affiliation(s)
- Jieying Liang
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xun-An Ning
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jian Song
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xingwen Lu
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jian Sun
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yaping Zhang
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
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140
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Roy M, Mondal A, Mondal A, Das A, Mukherjee D. Polyaniline Supported Palladium Catalyzed Reductive Degradation of Dyes Under Mild Condition. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666190130101109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Polyaniline supported palladium catalyst was applied in the reductive degradation of organic
dyes such as Methylene Blue, Rhodamine B, and Methyl Orange in presence of sodium borohydride
as an environmental-friendly approach. Role of pH, catalyst amount, and catalyst support were investigated
thoroughly to achieve complete and efficient degradation within few minutes under ambient
condition. Heterogeneous nature of the catalyst allowed easy recovery by centrifugation and the catalyst
was recycled for five cycles with slightly reduced activity. Recovered catalyst was characterized
by ICP-AES and TEM and a slight decrease in the activity of the catalyst was attributed to the agglomeration
of the palladium nanoparticles.
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Affiliation(s)
- Moumita Roy
- Department of Chemistry, Ramsaday College, Amta, Howrah 711 401, India
| | - Asish Mondal
- Department of Chemistry, Ramsaday College, Amta, Howrah 711 401, India
| | - Arijit Mondal
- Department of Chemistry, Ramsaday College, Amta, Howrah 711 401, India
| | - Amit Das
- Department of Chemistry, Ramsaday College, Amta, Howrah 711 401, India
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141
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Collivignarelli MC, Abbà A, Carnevale Miino M, Damiani S. Treatments for color removal from wastewater: State of the art. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 236:727-745. [PMID: 30772730 DOI: 10.1016/j.jenvman.2018.11.094] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/22/2018] [Accepted: 11/21/2018] [Indexed: 05/07/2023]
Abstract
It is evident from many recent papers that release of colored wastewater into the environment is source of pollution and this is a problem that particularly affect textile, dyeing and food industries. The review: (i) presents an analysis of various mechanisms involved in the different processes for color removal; (ii) describes conveniences and disadvantages that may exist in adopting one type of treatment in spite of another; (iii) reports the results of approximately 180 experimental tests. Both examples of treatments already widely applied to the real scale and still in the experimental phase are reported. This work focuses on different types of chemical/physical, chemical, electrochemical and biological processes applied in the field of color removal from industrial wastewater. Common chemical/physical treatments such as coagulation/flocculation, adsorption and membrane filtration as well as chemical-type processes are discussed, both those that exploit the traditional oxidizing chemical agents such as Ozone, H2O2 and reactive based on chlorine and those based on the principle of advanced chemical oxidation. In particular, both Hydroxyl radical based Advanced Oxidation Processes (AOPs) and Sulfate radical based AOPs are reported. The most commonly used Electrochemical processes for the removal of color are also presented as well as biological treatments. Based on more than 200 papers, this review provides important information on the use, effectiveness, advantages and downsides of the various treatments aimed at removing the color from the wastewater with a look at the technologies still under development.
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Affiliation(s)
| | - Alessandro Abbà
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, via Branze 43, 25123, Brescia, Italy.
| | - Marco Carnevale Miino
- Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 1, 27100, Pavia, Italy.
| | - Silvestro Damiani
- Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 1, 27100, Pavia, Italy.
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142
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Zheng C, Zheng H, Wang Y, Sun Y, An Y, Liu H, Liu S. Modified magnetic chitosan microparticles as novel superior adsorbents with huge "force field" for capturing food dyes. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:492-503. [PMID: 30620925 DOI: 10.1016/j.jhazmat.2018.12.120] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 12/29/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
In this study, modified magnetic chitosan microparticles (MCDs) were fabricated and used as adsorbents for the removal of Food Yellow 3 (FY3) and Acid Yellow 23 (AY23) from aqueous solution. The magnetic microparticles were characterized by scanning electronic microscope, Brunauer-Emmett-Teller specific surface area, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetry analysis, differential scanning calorimetry, and vibrating-sample magnetometer. Then, the effects of pH value, initial dye concentration, and contact time on the adsorption of FY3 and AY23 by MCDs were investigated. Evidently, MCDs showed excellent adsorption performance for both food dyes, and their adsorption capacities (833.33 mg/g for FY3 and 666.67 mg/g for AY23) were considerably higher than those of unmodified adsorbents, which could be attributed to the electrostatic interaction and ion exchange between the grafted cationic polymer and food dyes. Adsorption isotherm and kinetic data of the magnetic microparticles were well fitted by Langmuir isotherm and pseudo-second-order kinetic model, respectively. The regeneration and reusability of MCDs were also explored. Results showed that more than 80% adsorption capacities of MCDs for FY3 and AY23 remained after five adsorption-desorption cycles.
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Affiliation(s)
- Chaofan Zheng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China.
| | - Huaili Zheng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China.
| | - Yongjuan Wang
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
| | - Yanyan An
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Hongxia Liu
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Shuang Liu
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
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143
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Singh I, Birajdar B. Effective La-Na Co-Doped TiO₂ Nano-Particles for Dye Adsorption: Synthesis, Characterization and Study on Adsorption Kinetics. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E400. [PMID: 30857307 PMCID: PMC6474146 DOI: 10.3390/nano9030400] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 11/30/2018] [Accepted: 12/13/2018] [Indexed: 11/22/2022]
Abstract
The mesoporous La-Na co-doped TiO₂ nanoparticles (NPs) have been synthesized by non-aqueous, solvent-controlled, sol-gel route. The substitutional doping of large sized Na+1 and La+3 at Ti4+ is confirmed by X-ray diffraction (XRD) and further supported by Transmission Electron Microscopy (TEM) and X-ray Photo-electron Spectroscopy (XPS). The consequent increase in adsorbed hydroxyl groups at surface of La-Na co-doped TiO₂ results in decrease in pHIEP, which makes nanoparticle surface more prone to cationic methylene blue (MB) dye adsorption. The MB dye removal was examined by different metal doping, pH, contact time, NPs dose, initial dye concentration and temperature. Maximum dye removal percentage was achieved at pH 7.0. The kinetic analysis suggests adsorption dynamics is best described by pseudo second-order kinetic model. Langmuir adsorption isotherm studies revealed endothermic monolayer adsorption of Methylene Blue dye.
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Affiliation(s)
- Inderjeet Singh
- Special Centre for Nano Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
| | - Balaji Birajdar
- Special Centre for Nano Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
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144
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Shokoohi R, Bajalan S, Salari M, Shabanloo A. Thermochemical degradation of furfural by sulfate radicals in aqueous solution: optimization and synergistic effect studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:8914-8927. [PMID: 30715710 DOI: 10.1007/s11356-019-04382-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
In this study, thermochemical degradation of furfural by sulfate radical has been investigated to find the best-operating conditions. For this purpose, the response surface methodology (RSM) based on central composite design (CCD) was applied to optimize the five independent variables of thermally activated persulfate (TAP)/nZVI oxidation process including pH, PS concentration, furfural concentration, nZVI dosage, and heat. The ANOVA results ("P > F value" < 0.0001 and [Formula: see text] = 0.9701) showed the obtained quadratic model is acceptable to predict furfural removal. Based on the reduced quadratic model PS concentration, nZVI dosage, and heat revealed the positive effects on removal efficiency, while pH and furfural concentration had a negative effect. Accordingly, 98.4% of furfural could be removed within 60 min of reaction under the optimum conditions: pH 5.26, PS concentration of 20.52 mM, furfural concentration of 84.32 mg/L, nZVI dosage of 1.15 mg/L, and a temperature of 79 °C. In such circumstances, the furfural removal efficiency for TAP, PS/nZVI, PS, and nZVI was 94.5, 9, 3, and 2%, respectively. Therefore, based on the synergy index (SI) values, the combination of PS, nZVI, and heat can lead to a synergistic effect in the performance of the thermochemical process.
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Affiliation(s)
- Reza Shokoohi
- Department of Environmental Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Somaye Bajalan
- Department of Environmental Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mehdi Salari
- Department of Environmental Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Amir Shabanloo
- Department of Environmental Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran.
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145
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Liu Z, Wei H, Li A, Yang H. Enhanced coagulation of low-turbidity micro-polluted surface water: Properties and optimization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:739-747. [PMID: 30396682 DOI: 10.1016/j.jenvman.2018.08.101] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 08/21/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
Micro-polluted surface water with low turbidity and low content of dissolved organic matter (DOM) is usually inefficiently purified. In this work, a combined technique for the enhanced coagulation of this surface water was proposed and investigated using cationic grafted starch (St-G) and polyaluminum chloride (PACl) as co-coagulants, followed by a magnetic ion-exchange resin (MIER). St-G was fed before PACl, and this procedure not only efficiently removes turbidity but also largely reduces the doses of the two coagulants. MIER remarkably removed DOM, and raw water was effectively purified. The entire coagulation process was further optimized through response surface methodology based on a central composite design by using the doses of St-G, PACl, and MIER as input variables. The dose effects of the three chemicals on the coagulation performance for turbidity and DOM removal were examined, and the coagulation mechanisms, including the interactive effect among various chemicals, were discussed in detail. This work provided a new strategy for the efficient treatment of low-turbidity micro-polluted surface water by utilizing organic and inorganic co-coagulants with magnetic ion-exchange resin in practical applications.
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Affiliation(s)
- Zhouzhou Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Hua Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
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146
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Lima HH, Maniezzo RS, Llop ME, Kupfer VL, Arroyo PA, Guilherme MR, Rubira AF, Girotto EM, Rinaldi AW. Synthesis and characterization of pecan nutshell-based adsorbent with high specific area and high methylene blue adsorption capacity. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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147
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Gadekar MR, Ahammed MM. Modelling dye removal by adsorption onto water treatment residuals using combined response surface methodology-artificial neural network approach. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 231:241-248. [PMID: 30343219 DOI: 10.1016/j.jenvman.2018.10.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 09/28/2018] [Accepted: 10/06/2018] [Indexed: 05/09/2023]
Abstract
In this study, response surface methodology (RSM)-artificial neural network (ANN) approach was used to optimise/model disperse dye removal by adsorption using water treatment residuals (WTR). RSM was first applied to evaluate the process using three controllable operating parameters, namely WTR dose, initial pH (pHinitial) and dye concentration, and optimal conditions for colour removal were determined. In the second step, the experimental results of the design data of RSM were used to train the neural network along with a non-controllable parameter, the final pH (pHfinal). The trained neural networks were used for predicting the colour removal. A colour removal of 52.6 ± 2.0% obtained experimentally at optimised conditions (pHinitial 3.0, adsorbent dose 30 g/L and dye concentration 75 mg/L) was comparable to 52.0% and 52.2% predicted by RSM and RSM-ANN, respectively. This study thus shows that optimising/predicting the colour removal process using the RSM-ANN approach is possible, and it also indicates that adsorption onto WTR could be used as a primary treatment for removal of colour from dye wastewater.
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Affiliation(s)
- Mahesh R Gadekar
- Civil Engineering Department, SV National Institute of Technology, Surat, 395007, India
| | - M Mansoor Ahammed
- Civil Engineering Department, SV National Institute of Technology, Surat, 395007, India.
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148
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Characterization and optimization of spectrophotometric colour removal from dye containing wastewater by Coagulation-Flocculation. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2019. [DOI: 10.2478/pjct-2018-0054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The performance of Vigna unguiculata coagulant (VUC) for colour removal from acid dye was investigated in this study. The proximate, structure and morphology of the coagulant were investigated using standard official methods, Fourier-Transform Infrared (FTIR) spectrometer and scanning electron microscopy (SEM), respectively. Response surface methodology (RSM) using face-centred central composite design (FCCD) optimized four process variables including pH, coagulant dosage, dye concentration and time. The colour removal efficiency obtained from the optimization analysis was 99.26% at process conditions of pH 2, coagulant dosage 256.09 mg/l, dye concentration 16.7 mg/l and time 540 min. The verification experiments agreed with the predicted values having a standard error value of 1.96%. Overlay contour plot established optimum areas where the predicted response variable is in an acceptable range (≥ 70%) with respect to optimum conditions. The FCCD approach was appropriate for optimizing the process giving higher removal efficiency when compared to the main effect plots.
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149
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Sonal S, Mishra BK. Optimization of the Operational Conditions for the Treatment of Reactive Dyes through a Statistical Tool: Response Surface Methodology. ACTA ACUST UNITED AC 2019. [DOI: 10.18178/ijesd.2019.10.6.1171] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ooi TY, Yong EL, Din MFM, Rezania S, Aminudin E, Chelliapan S, Abdul Rahman A, Park J. Optimization of aluminium recovery from water treatment sludge using Response Surface Methodology. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 228:13-19. [PMID: 30212670 DOI: 10.1016/j.jenvman.2018.09.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 08/05/2018] [Accepted: 09/02/2018] [Indexed: 06/08/2023]
Abstract
For decades, water treatment plants in Malaysia have widely employed aluminium-based coagulant for the removal of colloidal particles in surface water. This generates huge amount of by-product, known as sludge that is either reused for land applications or disposed to landfills. As sludge contains high concentration of aluminium, both can pose severe environmental issues. Therefore, this study explored the potential to recover aluminium from water treatment sludge using acid leaching process. The evaluation of aluminium recovery efficiency was conducted in two phases. The first phase used the one factor at a time (OFAT) approach to study the effects of acid concentration, solid to liquid ratio, temperature and heating time. Meanwhile, second phase emphasized on the optimization of aluminium recovery using Response Surface Methodology (RSM). OFAT results indicated that aluminium recovery increased with the rising temperature and heating time. Acid concentration and solid to liquid ratio, however, showed an initial increment followed by reduction of recovery with increasing concentration and ratio. Due to the solidification of sludge when acid concentration exceeded 4 M, this variable was fixed in the optimization study. RSM predicted that aluminium recovery can achieve 70.3% at optimal values of 4 M, 20.9%, 90 °C and 4.4 h of acid concentration, solid to liquid ratio, temperature and heating time, respectively. Experimental validation demonstrated a recovery of 68.8 ± 0.3%. The small discrepancy of 2.2 ± 0.4% between predicted and validated recovery suggests that RSM was a suitable tool in optimizing aluminium recovery conditions for water treatment sludge.
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Affiliation(s)
- Theam Yiew Ooi
- Department of Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
| | - Ee Ling Yong
- Department of Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
| | - Mohd Fadhil Md Din
- Department of Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia; Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Environmental Sustainability, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia.
| | - Shahabaldin Rezania
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, Republic of Korea
| | - Eeydzah Aminudin
- Department of Structure and Materials, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Shreeshivadasan Chelliapan
- Engineering Department, UTM Razak School of Engineering & Advanced, Universiti Teknologi Malaysia, Malaysia
| | - Azlan Abdul Rahman
- Office of Deputy Vice-Chancellor (Development), Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
| | - Junboum Park
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, Republic of Korea
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