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Chamaraja NA, Khan MM, Hemalatha HN, Rajendraprasad N, Prasanna DS. Ca-doped ZnO nanoparticles for MB dye degradation and adsorptive removal of tinidazole. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:710. [PMID: 38976119 DOI: 10.1007/s10661-024-12843-4] [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: 12/19/2023] [Accepted: 06/15/2024] [Indexed: 07/09/2024]
Abstract
Industrial dye degradation involves several processes by which dyes are broken down, ideally into innocuous products. Methylene blue (MB) is one of the most commonly employed dyes in the textile industry and is released into water in routine industry processes. These discharges lead to creating a nocuous nature for humans and animals. Drugs are also discharged into water bodies from various pharmaceutical industries. In these two contexts, in the present work, the green synthesis of calcium-doped zinc oxide nanoparticles (Ca-doped ZnO NPs) is achieved using the aqueous peel extract of Citrus limetta by the solution combustion technique. The structural, morphological, and optical properties of the synthesized Ca-doped ZnO NPs are investigated using XRD, FTIR, SEM, EDX, and UV-visible spectroscopy. The prepared NPs were subjected to photocatalytic degradation of MB dye under visible-light illumination, which shows ~ 95% dye degradation. The synthesized Ca-doped ZnO NPs were also employed to adsorb tinidazole (TDZ), a nitroimidazole antibiotic, from water samples. An excellent adsorptive capacity of the NPs was observed for selectively adsorbing the TDZ ~ 96.2%. The drug TDZ was found to have pseudo-second-order kinetics. The catalyst recycling proved its repeatability; removal of the dye reached up to 92% after three successive usages. Therefore, using waste Citrus limetta peel extract, the multifunctional Ca-doped ZnO NPs were synthesized, which maintained effective adsorption potential and photocatalytic abilities and could be used as an effective material for environmental remediation.
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Affiliation(s)
- N A Chamaraja
- Department of Chemistry, JSS Academy of Technical Education, (Affiliated to Visvesvaraya Technological University, Belagavi), Dr. Vishnuvardhan Road, Bengaluru, 560 060, India.
| | - Mohammad Mansoob Khan
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE, 1410, Brunei Darussalam
| | - H N Hemalatha
- Department of Civil Engineering, JSS Academy of Technical Education, (Affiliated to Visvesvaraya Technological University, Belagavi), Dr. Vishnuvardhan Road, Bengaluru, 560060, India
| | - N Rajendraprasad
- PG Department of Chemistry, JSS Research Centre, Recognized by the University of Mysore, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru, India
| | - D S Prasanna
- Department of Applied Sciences, Visvesvaraya Technological University, Muddenahalli Campus, Chikkaballapur, 562 010, India
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2
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Hu YL, Liu Y, Fu W, Yang H. Efficiency and mechanism of enhanced norfloxacin removal using amorphous TiO 2-modified biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 351:124027. [PMID: 38688387 DOI: 10.1016/j.envpol.2024.124027] [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: 12/13/2023] [Revised: 03/31/2024] [Accepted: 04/21/2024] [Indexed: 05/02/2024]
Abstract
Inadequate treatment of antibiotic-contaminated wastewater, including compounds such as norfloxacin (NOR), poses a substantial treat to both ecological safety and human well-being. An innovative approach was devised to address NOR pollution using amorphous TiO2 modified biochar (A-TiO2/BC) prepared via sol-gel impregnation. The resultant had a commendably specific surface area of 131.8 m2/g-1, which was 1.91 times more than the original surface area of unmodified BC. A-TiO2/BC also exhibited abundant hydroxyl and oxygen-containing functional groups, thereby provided adequately active sites for NOR adsorption. R2 values obtained from NOR isotherm adsorption models descended in order of Freundlich < Temkin < Sips < Langmuir, which indicated that the NOR removal by A-TiO2/BC mainly complied with monolayer adsorption accompanied by heterogeneous surface adsorption. Under weakly acidic conditions, NOR adsorption benefits from the synergistic physicochemical interactions of A-TiO2 and BC. Notably, A-TiO2/BC demonstrated an impressive NOR adsorption capacity of up to 78.14 mg g-1, with a dosage of 20 mg L-1 at 25 °C under pH 6. Such A-TiO2 modified biochar thus presents a promising alternative for NOR removal.
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Affiliation(s)
- Yu-Liang Hu
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, China
| | - Ying Liu
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, China
| | - Weng Fu
- School of Chemical Engineering, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Hong Yang
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, China.
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Huo LZ, Guo CF, Gong ZX, Xu H, Yang XJ, Wang YX, Luo XP. Preparation of Aminated Sodium Lignosulfonate and Efficient Adsorption of Methyl Blue Dye. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1046. [PMID: 38473518 DOI: 10.3390/ma17051046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
The aminated sodium lignosulfonate (AELS) was prepared through a Mannich reaction and characterized via FT-IR, TG, SEM and XPS in this study. Subsequently, the adsorption capacity of AELS for methyl blue (MB) was evaluated under various conditions such as pH, adsorbent dosage, contact time, initial concentration and temperature. The adsorption kinetics, isotherms and thermodynamics of AELS for methyl blue were investigated and analyzed. The results were found to closely adhere to the pseudo-second-order kinetic model and Langmuir isotherm model, suggesting a single-molecular-layer adsorption process. Notably, the maximum adsorption capacity of AELS for methyl blue (153.42 mg g-1) was achieved under the specified conditions (T = 298 K, MAELS = 0.01 g, pH = 6, VMB = 25 mL, C0 = 300 mg L-1). The adsorption process was determined to be spontaneous and endothermic. Following five adsorption cycles, the adsorption capacity exhibited a minimal reduction from 118.99 mg g-1 to 114.33 mg g-1, indicating good stability. This study contributes to the advancement of utilizing natural resources effectively and sustainably.
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Affiliation(s)
- Li-Zhu Huo
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Chao-Fei Guo
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Hangzhou 311300, China
| | - Zhu-Xiang Gong
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Hao Xu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Xue-Juan Yang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Hangzhou 311300, China
| | - Yu-Xuan Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Hangzhou 311300, China
| | - Xi-Ping Luo
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Hangzhou 311300, China
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Behymer MM, Mo H, Fujii N, Suresh V, Arzumanian AS, Chan A, Nath AK, McCain R, MacRae CA, Peterson R, Boss GR, Davisson VJ, Knipp GT. Investigating the Replacement of Carboxylates with Carboxamides to Modulate the Safety and Efficacy of Platinum(II) Thioether Cyanide Scavengers. Toxicol Sci 2023; 197:kfad119. [PMID: 37952247 PMCID: PMC10823771 DOI: 10.1093/toxsci/kfad119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023] Open
Abstract
Cyanide represents a persistent threat for accidental or malicious misuse due to easy conversion into a toxic gas and access to large quantities through several industries. The high safety index of hydroxocobalamin is a cornerstone quality as a cyanide scavenger. Unfortunately, intravenous infusion of hydroxocobalamin limits the utility in a mass casualty setting. We previously reported platinum(II) [Pt(II)] complexes with trans-directing sulfur ligands as an efficacious alternative to hydroxocobalamin when delivered by a bolus intramuscular injection in mice and rabbits. Thus, to enable Pt(II) as an alternative to hydroxocobalamin, a high safety factor is needed. The objective is to maintain efficacy and mitigate the risk for nephrotoxicity. Platinum amino acid complexes with the ability to form five- or six-membered rings and possessing either carboxylates or carboxamides are evaluated in vitro for cyanide scavenging. In vivo efficacy was evaulated in the zebrafish and mice cyanide exposure models. In addition, Pt(II) complex toxicity and pharmacokinetics were evaluated in a cyanide naive Sprague-Dawley model. Doses for toxicity are escalated to 5x from the efficacious dose in mice using a body surface area adjustment. The results show the carboxamide ligands display a time and pH dependence on cyanide scavenging in vitro and efficacy in vivo. Additionally, exchanging the carboxylate for carboxamide showed reduced indications of renal injury. A pharmacokinetic analysis of the larger bidentate complexes displayed rapid absorption by intramuscular administration and having similar plasma exposure. These findings point to the importance of pH and ligand structures for methionine carboxamide complexes with Pt(II).
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Affiliation(s)
- Matthew M Behymer
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, Indiana 47907, USA
| | - Huaping Mo
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Naoaki Fujii
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Vallabh Suresh
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Ari S Arzumanian
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Adriano Chan
- Department of Medicine, University of California, San Diego, California 92093, USA
| | - Anjali K Nath
- Department of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA
| | - Robyn McCain
- Purdue Translational Pharmacology CTSI Core Facility, Purdue University, West Lafayette, Indiana, USA
| | - Calum A MacRae
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Randall Peterson
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, Utah 84112, USA
| | - Gerry R Boss
- Department of Medicine, University of California, San Diego, California 92093, USA
| | - Vincent Jo Davisson
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Gregory T Knipp
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, Indiana 47907, USA
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Leitner S, Sobanski F, Soja G, Keiblinger K, Stumpp C, Watzinger A. Carbon isotope effects in the sorption of chlorinated ethenes on biochar and activated carbon. Heliyon 2023; 9:e20823. [PMID: 37876456 PMCID: PMC10590956 DOI: 10.1016/j.heliyon.2023.e20823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/29/2023] [Accepted: 10/08/2023] [Indexed: 10/26/2023] Open
Abstract
As an alternative to activated carbon, biochar is a promising, environmentally friendly sorbent that can be used to remove organic groundwater pollutants, such as chlorinated ethenes (CEs). Stable isotope fractionation in biofilters is used to quantify pollutant degradation and to distinguish degradation from pollutant sorption on e.g. biochar. However, the sorption of CEs on biochar, and the potential abiotic fractionation processes remain to be tested. The sorption process of CEs and ethene on activated carbon and biochar was investigated with regard to the isotope effects for the differentiation from microbial degradation processes. Results from physical and chemical characterization of biochar indicated that biochar feedstock and pyrolysis conditions determined sorption performance depending on the surface chemistry and the pore size distribution of the coarse sorbent particles. The sorption capacity of the activated carbon was significantly higher with highly chlorinated ethenes, but similar to the biochars with low chlorination. Apparent carbon isotope fractionation factors (ε) of +0.1 to -4.4 ‰ were found above measurement uncertainties of GC/IRMS. The extent of isotope enrichment of the 13C bearing isotopologues in the residual aqueous phase (ε < 0) was characteristic for individual pairs of pollutant and sorbent material and could be related to pore-filling processes limited by the micropore size distribution of sorbent materials and the chemical properties of sorbed pollutants. Especially the large isotope fractionation during the sorption of ethene led to the assumption that diffusion processes within the pore matrix of the sorbent particles contributed to the observed isotope effects, but should still be considered a property of sorption. Concluding on the results indicated that sorption processes can have a significant contribution to carbon isotope fractionation in CEs and ethene. These should not be neglected in the evaluation of biofilters for groundwater purification, in which CEs are simultaneously degraded by microbes.
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Affiliation(s)
- Simon Leitner
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Soil Research, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
| | - Fridjof Sobanski
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Soil Research, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
| | - Gerhard Soja
- AIT Austrian Institute of Technology, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Chemical and Energy Engineering, Muthgasse 107, 1190 Vienna, Austria
| | - Katharina Keiblinger
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Soil Research, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
| | - Christine Stumpp
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Soil Physics and Rural Water Management, Muthgasse 18, 1190 Vienna, Austria
| | - Andrea Watzinger
- University of Natural Resources and Life Sciences, Vienna, Austria
- Institute of Soil Research, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
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Bassareh H, Karamzadeh M, Movahedirad S. Synthesis and characterization of cost-effective and high-efficiency biochar for the adsorption of Pb 2+ from wastewater. Sci Rep 2023; 13:15608. [PMID: 37730745 PMCID: PMC10511742 DOI: 10.1038/s41598-023-42918-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/16/2023] [Indexed: 09/22/2023] Open
Abstract
This study aimed to investigate the adsorption mechanism of Pb2+ in wastewater using activated carbon derived from inexpensive materials, specifically avocado, bitter orange, and walnut leaves, through a single-step chemical activation process. The activated carbon was prepared using sulfuric acid as an activator, with a particle size of 1 mm. The pyrolysis reactor (slow-pyrolysis) operated at 600 °C for 90 min with a nitrogen flow rate of 5 L/min. Batch experiments were conducted under various conditions to determine the optimal dosage (1.5 g/L), equilibrium contact time (180 min), and pH (6.5). The study focused on employing cost-effective and highly efficient adsorbents, namely biochar produced from tree leaves, for the adsorption process. The results indicated that the pseudo-second-order kinetic model accurately described the adsorption process, while the Freundlich isotherm model best fit the experimental data. These findings suggest that tree leaves can serve as cost-effective and efficient adsorbents for a wide range of applications. Furthermore, multiple adsorption factors were evaluated in batch mode, including contact duration, pH, adsorbent dosage, concentration of the Pb2+ solution, and temperature. The maximum adsorption capacities for the activated carbon derived from avocado, bitter orange, and walnut leaves were found to be 60.46, 59.42, and 58.48 mg/g, respectively. Thus, this study highlights the effectiveness and economic feasibility of using pyrolysis-derived activated carbon from low-cost materials for the removal of Pb2+ from wastewater.
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Affiliation(s)
- Hatef Bassareh
- Department of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Masoud Karamzadeh
- Department of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Salman Movahedirad
- Department of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran.
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7
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Vasquez-Caballero MA, Canchanya-Huaman Y, Mayta-Armas AF, Pomalaya-Velasco J, Checca-Huaman NR, Bendezú-Roca Y, Ramos-Guivar JA. Pb(II) Uptake from Polluted Irrigation Water Using Anatase TiO 2 Nanoadsorbent. Molecules 2023; 28:4596. [PMID: 37375151 DOI: 10.3390/molecules28124596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
The adsorption characteristics of titanium dioxide nanoparticles (nano-TiO2) for the removal of Pb(II) from irrigation water were investigated in this work. To accomplish this, several adsorption factors, such as contact time and pH, were tested to assess adsorption efficiencies and mechanisms. Before and after the adsorption experiments, commercial nano-TiO2 was studied using X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The outcomes showed that anatase nano-TiO2 was remarkably efficient in cleaning Pb(II) from water, with a removal efficiency of more than 99% after only one hour of contact time at a pH of 6.5. Adsorption isotherms and kinetic adsorption data matched the Langmuir and Sips models quite well, showing that the adsorption process occurred at homogenous sites on the surface of nano-TiO2 by forming a Pb(II) adsorbate monolayer. The XRD and TEM analysis of nano-TiO2 following the adsorption procedure revealed a non-affected single phase (anatase) with crystallite sizes of 9.9 nm and particle sizes of 22.46 nm, respectively. According to the XPS data and analyzed adsorption data, Pb ions accumulated on the surface of nano-TiO2 through a three-step mechanism involving ion exchange and hydrogen bonding mechanisms. Overall, the findings indicate that nano-TiO2 has the potential to be used as an effective and long-lasting mesoporous adsorbent in the treatment and cleaning of Pb(II) from water bodies.
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Affiliation(s)
- Miguel A Vasquez-Caballero
- Laboratorio de No Metálicos, Facultad de Ingeniería Química, Universidad Nacional del Centro del Perú (UNCP), Av. Mariscal Ramón Castilla Nº 3909, El Tambo, Huancayo 12000, Peru
| | - Yamerson Canchanya-Huaman
- Laboratorio de No Metálicos, Facultad de Ingeniería Química, Universidad Nacional del Centro del Perú (UNCP), Av. Mariscal Ramón Castilla Nº 3909, El Tambo, Huancayo 12000, Peru
| | - Angie F Mayta-Armas
- Laboratorio de No Metálicos, Facultad de Ingeniería Química, Universidad Nacional del Centro del Perú (UNCP), Av. Mariscal Ramón Castilla Nº 3909, El Tambo, Huancayo 12000, Peru
| | - Jemina Pomalaya-Velasco
- Laboratorio de No Metálicos, Facultad de Ingeniería Química, Universidad Nacional del Centro del Perú (UNCP), Av. Mariscal Ramón Castilla Nº 3909, El Tambo, Huancayo 12000, Peru
| | | | - Yéssica Bendezú-Roca
- Laboratorio de No Metálicos, Facultad de Ingeniería Química, Universidad Nacional del Centro del Perú (UNCP), Av. Mariscal Ramón Castilla Nº 3909, El Tambo, Huancayo 12000, Peru
| | - Juan A Ramos-Guivar
- Grupo de Investigación de Nanotecnología Aplicada para Biorremediación Ambiental, Energía, Biomedicina y Agricultura (NANOTECH), Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 15081, Peru
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Huang CW, Zhou SR, Hsiao WC. Multifunctional TiO2/MIL-100(Fe) to conduct adsorption, photocatalytic, and heterogeneous photo-Fenton reactions for removing organic dyes. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Rajput MK, Hazarika R, Sarma D. Removal of As(III)/As(V) from aqueous solution using newly developed thiosalicylic acid coated magnetite [TSA@Fe 3O 4] nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:23348-23362. [PMID: 36322359 DOI: 10.1007/s11356-022-23852-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study was to develop an affordable adsorption methodology for removal of As(III)/As(V) from contaminated water. Herein, novel adsorbent TSA@Fe3O4 nanoparticles (NPs) were synthesized by decorating thiosalicylic acid (TSA) on magnetite nanoparticles (Fe3O4 NPs) and employed for removal of As(III)/As(V) species from artificially contaminated natural water systems. TSA@Fe3O4 NPs demonstrated excellent adsorption efficiency (AE) and 98% of As(V) and 93% of As(III) was removed at optimized experimental conditions. The adsorption kinetic and equilibrium isotherm studies were conducted preferentially for As(III) adsorption. Adsorption followed the pseudo-second-order kinetic (R2 = 99%) and adsorption data fitted well in Langmuir isotherm model (R2 = 99%) and maximum adsorption capacity (Qmax = 34.1 mg/g) was calculated for 5 mg/L of As(III) by using 10 mg of TSA@Fe3O4 NPs. The effect of pH, contact time, adsorption dosages, and competitive anions was also examined to identify optimum experimental conditions. The adsorbent was characterized by advanced instrumental techniques to investigate the physicochemical properties and stability of NPs. To comprehend the interactions of As(III) species with adsorbent NPs, NPs were analyzed using XPS and Raman spectroscopy techniques. Both the techniques confirmed that As(III) and As(V) species present simultaneously on adsorbent surface. The TSA@Fe3O4 was regenerated using 0.1 M NaOH. The findings of this study suggested that TSA@Fe3O4 NPs could be considered a potential adsorbent for effective remediation of As(III) and As(V) from contaminated natural water systems.
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Affiliation(s)
- Mohit Kumar Rajput
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India
| | - Roktopol Hazarika
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India
| | - Diganta Sarma
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India.
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Chernomorova MA, Myakinina MS, Zhinzhilo VA, Uflyand IE. Analytical Determination of Cephalosporin Antibiotics Using Coordination Polymer Based on Cobalt Terephthalate as a Sorbent. Polymers (Basel) 2023; 15:polym15030548. [PMID: 36771849 PMCID: PMC9919266 DOI: 10.3390/polym15030548] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
In this work, a coordination polymer based on cobalt terephthalate was obtained and characterized by elemental analysis, infrared spectroscopy, X-ray diffraction analysis, and scanning electron microscopy. The coordination polymer was tested as a sorbent for the solid-phase extraction of cephalosporin antibiotics, including ceftriaxone, cefotaxime, and cefazolin, from aqueous solutions. The coordination polymer had a high adsorption capacity (520.0 mg/g). Antibiotics adsorption followed pseudo-second order kinetic model and the Freundlich isotherm model. The calculated thermodynamic parameters indicate a spontaneous process. The resulting coordination polymer has good stability and reusability. The possibility of separating the studied cephalosporins on a chromatographic column filled with a coordination polymer was shown. This work opens great prospects for the development and application of a coordination polymer based on cobalt terephthalate for the removal of cephalosporins from ambient water.
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Aden M, Elmi A, Husson J, Idriss S, Filiatre C, Knorr M. Silica-Supported Alginates From Djiboutian Seaweed as Biomass-Derived Materials for Efficient Adsorption of Ni(II). CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00527-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Pan Y, Zhang M, Jia Y, Qian W, Yang J, Xu Q, Yang T, Wang P, Chen F. Dynamic process and mechanism of crude oil release from silty intertidal sediment under different influencing factors. JOURNAL OF CONTAMINANT HYDROLOGY 2022; 250:104077. [PMID: 36156379 DOI: 10.1016/j.jconhyd.2022.104077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/28/2022] [Accepted: 09/11/2022] [Indexed: 06/16/2023]
Abstract
Under tidal scouring, residual petroleum in the intertidal sediment after oil spills could release again, causing secondary pollution in the marine ecosystem. The current study aimed to investigate the dynamic process and principles of crude oil release from silty intertidal sediment under different influencing factors and screened for the key factors. In this paper, the fitting equations and correlation between the release amount and various factors were explored through the single-factor and orthogonal experiments. Then, the key influencing factors were selected for multi-factor fitting of the release amount. The results showed that the oil release amount rose with the increase in oil concentration, oscillation frequency, and release time, but decreased with an increase in salinity. As the pH decreased, the oil release amount increased. The relationship between release amount and concentration/oscillation frequency can be equipped by the polynomial equation, and the average R2 was 0.95 and 0.84, respectively. The release amount can be fitted by the Lagergren pseudo-second-order kinetic equation with time, with the average R2 0.89. The pH was negatively correlated with the release amount in the fresh contaminated sediment but positively correlated with the weathered one. The correlation between each factor and oil release amount was ranked (from large to small) as oil concentration, oscillation frequency, salinity, time, and pH. At last, a polynomial equation can be fitted between the key influencing factors (oil concentration and oscillation frequency) and the release amount. The results can provide a theoretical basis for predicting the secondary pollution owing to the oil re-release from intertidal sediment.
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Affiliation(s)
- Yuying Pan
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China; Key Laboratory of Marine Fishery Equipment and Technology of Zhejiang Province, Zhoushan 316022, China.
| | - Meng Zhang
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China
| | - Yonggang Jia
- Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
| | - Weiguo Qian
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China; Key Laboratory of Marine Fishery Equipment and Technology of Zhejiang Province, Zhoushan 316022, China
| | - Jinsheng Yang
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, China
| | - Qingxia Xu
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China
| | - Tingting Yang
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China
| | - Peng Wang
- Rizhao Administrative Service Center, Rizhao 276800, China
| | - Fan Chen
- School of Fishery, Zhejiang Ocean University, Zhoushan 316022, China
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13
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Meng S, Yao Z, Liu J, Wang E, Li C, Jiang B, Xu Z. Carbon dots capped cerium oxide nanoparticles for highly efficient removal and sensitive detection of fluoride. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128976. [PMID: 35472541 DOI: 10.1016/j.jhazmat.2022.128976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/07/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Since the excess exposure to F- may induce serious issues to human health, the effective adsorption and sensitive detection of F- is essential. Therefore, carbon dots (CDs) capped CeO2 (CeO2@CDs) was synthesized via hydrothermal treatment of tannic acid and CeCl3. Due to abundant phenolic hydroxyl are reserved and excellent hydrophilicity, CeO2@CDs possess high F- adsorption capacity. The partition coefficient parameters (PC) are determined to be 2.65 L/g, which is comparable with previous work. The kinetics results and adsorption isotherm are consistent with pseudo-second-order model and Freundlich model, respectively, indicating the chemisorption dominate the adsorption, mainly via the ion exchange between hydroxyl and F-. Since phenolic hydroxyl existed on the CeO2@CDs, synergetic effect of CDs and CeO2 contribute to superior ROS eliminating capacity, even at acidic conditions. Moreover, due to the ROS scavenging of CeO2 @CDs abilities can be potentiated by F-, colorimetric detection of F- can be realized via horseradish peroxidase as an indicator. The linear range is 0.3-2.1 mM with limit of detection is 0.13 mg/L. The current results imply that CeO2@CDs possess potential in both efficient removal and sensitive detection of F- related contamination issues and elucidation of development to address other anions related issues.
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Affiliation(s)
- Song Meng
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Zhihao Yao
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Jiawei Liu
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Erjing Wang
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Cao Li
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Bingbing Jiang
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China.
| | - Ziqiang Xu
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China.
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14
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Zhong R, Liao H, Deng Q, Zou X, Wu L. Preparation of a novel composite photocatalyst BiOBr/ZIF-67 for enhanced visible-light photocatalytic degradation of RhB. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Tseng RL, Tran HN, Juang RS. Revisiting temperature effect on the kinetics of liquid–phase adsorption by the Elovich equation: A simple tool for checking data reliability. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Yan L, Gu W, Zhou N, Ye C, Yang Y. Preparation and characterization of wheat straw biochar loaded with aluminium/lanthanum hydroxides: a novel adsorbent for removing fluoride from drinking water. ENVIRONMENTAL TECHNOLOGY 2022; 43:2771-2784. [PMID: 33719868 DOI: 10.1080/09593330.2021.1903563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
In this work, a novel adsorbent of aluminium/lanthanum loaded wheat straw biochar (Al-La-WSB), was prepared by using a facile approach and used for fluoride removal. The Al-La-WSB and its pristine wheat straw biochar (WSB) were characterized by scanning electronic microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray powder diffraction (XRD) methods. Batch adsorption experiments were carried out to investigate adsorbent performance, the highest removal rate was observed at pH 9, contact time of 7 h and Al-La-WSB dose of 1 g L-1. Lagergren pseudo-second-order kinetics and Langmuir isotherm model fitted the experimental data well. The maximum fluoride adsorption capacity of Al-La-WSB at different experiment temperature of 298, 308 and 318 K, was 51.28 mg g-1, 46.73 mg g-1 and 50.25 mg g-1, respectively, which was better than most reported adsorbents. The Al-La-WSB performed well over a considerable wide pH range of 3-10 and carried positive charge at pH < 4.8. The presence co-existing ions of SO42-, HCO3-, Cl- and NO3- had a minor impact on fluoride adsorption besides PO43-. Regeneration experiment results showed that the Al-La-WSB had an excellent reusability. According to the adsorbent characterization and batch adsorption experiment, the adsorption of fluoride on the Al-La-WSB was primarily a chemisorption, involving electrostatic interactions and ion exchange, which nitrate ion and hydroxyl played a major role. The results suggested that the Al-La-WSB could be a great adsorbent for removing fluoride from drinking water.
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Affiliation(s)
- Ling Yan
- Department of Preventive Medicine, School of Public Health, Nangtong University, Jiangsu, People's Republic of China
| | - Weishi Gu
- Department of Preventive Medicine, School of Public Health, Nangtong University, Jiangsu, People's Republic of China
| | - Nan Zhou
- Department of Preventive Medicine, School of Public Health, Nangtong University, Jiangsu, People's Republic of China
| | - Changqing Ye
- Department of Preventive Medicine, School of Public Health, Nangtong University, Jiangsu, People's Republic of China
| | - Yuhuan Yang
- Department of Preventive Medicine, School of Public Health, Nangtong University, Jiangsu, People's Republic of China
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, WI, USA
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17
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Zhang Y, Yu X, Liu Y, Wu S, Yu R, Chen T. Adsorption of chlortetracycline in aquaculture wastewater by lanthanum modified multi-walled carbon nanotubes. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:369-378. [PMID: 35502619 DOI: 10.1080/03601234.2022.2061261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The lanthanum modified multi-walled carbon nanotubes (La-CNTs) prepared by an impregnation method were investigated for the adsorption of chlortetracycline (CTC) in aquaculture wastewater. The adsorbents were characterized by SEM, EDS, XRD and BET. The effects of some factors including La-containing impregnant concentration, adsorbent dosage, CTC adsorbate concentration, adsorption time, pH of the adsorbate solution and additional ions on the CTC adsorption by La-CNTs were investigated in detail, and the optimal adsorption conditions were determined. The adsorption kinetics obeyed the quasi-second-order kinetic model. The adsorption isotherms obeyed the Langmuir model and the fitted maximum capacity of La-CNTs for CTC adsorption was 55.3 mg/g.
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Affiliation(s)
- Yuqi Zhang
- College of Ocean Technique and Environmental Engineering, Dalian Ocean University, Dalian, China
- Marine Biological Resources Utilization and Ecological Environmental Protection Technology Research Institute, Liaoning Industrial Technology Research Institute, Liaoning, China
| | - Xiaocai Yu
- College of Ocean Technique and Environmental Engineering, Dalian Ocean University, Dalian, China
- Marine Biological Resources Utilization and Ecological Environmental Protection Technology Research Institute, Liaoning Industrial Technology Research Institute, Liaoning, China
| | - Yifu Liu
- College of Ocean Technique and Environmental Engineering, Dalian Ocean University, Dalian, China
- Marine Biological Resources Utilization and Ecological Environmental Protection Technology Research Institute, Liaoning Industrial Technology Research Institute, Liaoning, China
| | - Shini Wu
- College of Ocean Technique and Environmental Engineering, Dalian Ocean University, Dalian, China
- Marine Biological Resources Utilization and Ecological Environmental Protection Technology Research Institute, Liaoning Industrial Technology Research Institute, Liaoning, China
| | - Runqiang Yu
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Liaoning, China
| | - Tao Chen
- College of Ocean Technique and Environmental Engineering, Dalian Ocean University, Dalian, China
- Marine Biological Resources Utilization and Ecological Environmental Protection Technology Research Institute, Liaoning Industrial Technology Research Institute, Liaoning, China
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18
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Geng N, Bai Y, Pan S. Research on heavy metal release with suspended sediment in Taihu Lake under hydrodynamic condition. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:28588-28597. [PMID: 34988799 DOI: 10.1007/s11356-021-17666-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 11/17/2021] [Indexed: 06/14/2023]
Abstract
Heavy metals are often stored in the sediment of lakes or reservoirs and are easily released to the overlying water in the case of strong wind, which greatly affects the water environment of lakes or reservoirs. The conventional investigation of heavy metals in lakes has been relatively extensive, but there is no numerical model for heavy metals released into overlying water with suspended sediment under hydrodynamic action. In this paper, laboratory experiments were carried out, and it is found that the concentration of heavy metals (Cr, Cu, Cd) often begins to stabilize after the concentration of total suspended solids (TSS) reaches a stable level. With the increase of flow velocity (3.2 to 14 cm/s), the final equilibrium concentration of TSS, Cr, Cu, and Cd will also increase from 174 to 1102 mg/L, 0.72 to 1.14 μg/L, 2.34 to 10.45 μg/L, and 0.13 to 0.35 μg/L, respectively. Based on lattice Boltzmann method (LBM), a numerical model of heavy metal released into overlying water under hydrodynamic conditions is established. Compared the simulated data with measured data, the average [Formula: see text] of LBM model can be reached at 0.827, higher than 0.711 of traditional simulation model. The development of the numerical model is conducive to the prediction of lake or reservoir environment and also provides a theoretical basis for heavy metal treatment in reservoirs.
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Affiliation(s)
- Nan Geng
- Zhejiang University of Water Resources and Electric Power, Zhejiang, 310000, China
| | - Yu Bai
- Zhejiang University of Water Resources and Electric Power, Zhejiang, 310000, China.
| | - Suli Pan
- Zhejiang University of Water Resources and Electric Power, Zhejiang, 310000, China
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19
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Tewatia P, Kumar V, Samota S, Singhal S, Kaushik A. Sensing and annihilation of ultra-trace level arsenic (III) using fluoranthene decorated fluorescent nanofibrous cellulose probe. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127722. [PMID: 34865904 DOI: 10.1016/j.jhazmat.2021.127722] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/22/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
Besides presence of heavy metals, especially arsenic in water bodies, northern India is striving to obliterate crop residue, which is otherwise burnt to make the fields ready for subsequent crop, causing acute air pollution. Through this study, an effort has been made to utilize wheat-straw cellulose to develop inexpensive and efficacious sensing cum annihilation system for deleterious arsenite ions As(III) in water by grafting a novel fluorophore, 3-bromofluoranthene on cellulose (BF@CFs). BF@CFs were characterized for structural, morphological and thermal properties using FTIR, XRD, TGA, FESEM, EDS and TEM, which confirmed the successful insertion of fluoranthene molecule on cellulose while preserving its crystalline nanofibrous structure. Fluorescent studies indicated strong affinity of BF@CFs towards arsenite ions exhibiting "turn on" fluorescence response attributed to inhibition of photo induced electron transfer (PET) and metal ion chelation with a limit of detection of 2.8 ng L-1, lower than WHO prescribed limit of 10 μg L-1. Besides sensing, the porous fibrous network of BF@CFs exhibited good adsorption of As(III) ions with maximum adsorption of 171.2 μg g-1 at 35 min under optimized conditions. BF@CFs displayed 95.2% removal efficiency with 2 μg L-1 concentration of As (III) ions at room temperature and neutral pH observed by atomic absorption spectrophotometer coupled with hydride generation assembly (HG-AAS) measurements. BF@CFs retained adsorption 97.3% efficiency after five adsorption/ desorption cycles displaying excellent reusability and stability, strengthening its potential as dual functional sensor and adsorbent.
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Affiliation(s)
- Preeti Tewatia
- Energy Research Centre, Panjab University, Chandigarh, India
| | - Vijay Kumar
- Energy Research Centre, Panjab University, Chandigarh, India
| | - Sharmistha Samota
- Energy Research Centre, Panjab University, Chandigarh, India; Institute of Nano Science and Technology, Mohali, Punjab, India
| | - Sonal Singhal
- Department of Chemistry, Panjab University, Chandigarh, India.
| | - Anupama Kaushik
- Energy Research Centre, Panjab University, Chandigarh, India; Dr. SSB University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh, India.
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20
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Gu M, Xian X, Miao B, Chen X, Du X, Liu Z, Xu R. A New Approach for Modeling Adsorption Kinetics and Transport of Methane and Carbon Dioxide in Shale. AIChE J 2022. [DOI: 10.1002/aic.17578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Min Gu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Xue‐fu Xian
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Beizeng Miao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Xusong Chen
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Xidong Du
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Zhengyang Liu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
| | - Ran Xu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering Chongqing University Chongqing China
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21
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Kouotou D, Ghalit M, Ndi JN, Martinez LMP, Ouahabi ME, Ketcha JM, Gharibi EK. Removal of metallic trace elements (Pb 2+, Cd 2+, Cu 2+, and Ni 2+) from aqueous solution by adsorption onto cerium oxide modified activated carbon. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:467. [PMID: 34224011 DOI: 10.1007/s10661-021-09267-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
The equilibrium and kinetic studies of removal of Pb2+, Cd2+, Ni2+, and Cu2+ metal ions were carried out using activated carbon prepared from palm kernel shell and doped with CeO2 (Ce/AC). The obtained material carbon was characterized by XRD which showed some crystalline traces of CeO2, SEM displaying the porous texture with spherical pores and the determination of pH of point of zero charge (pHPZC) which was found to be equal to 6. The contact time and adsorbate were thoroughly investigated. The maximum adsorption depends inversely on the hydrated metal radius. This observation was confirmed by calculating the formation energies (ΔH(M(OH)2)) of M(OH)2. The metal ionic radii were acting on calculated sorption capacity and that sorption efficiency related to ionic radii of metal was as follows: R(Ni2+) ≤ R(Cd2+) < R(Cu2+) < R(Pb2+). The texture and morphology of the material after sorption were affected by the metallic ion nature as observed by SEM. The kinetic studies showed that the rate constant (k2) of pseudo-second-order model decreased with the increase of the hydrated cations radii, while the rate constant of intraparticle diffusion increased with the increase of the ionic radii. The Freundlich isotherm model best fit the experimental sorption data for all the metallic ions.
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Affiliation(s)
- Daouda Kouotou
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Mohammed Ghalit
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Julius Nsami Ndi
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Luisa M Pastrana Martinez
- Carbon Materials Research Group, Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Meriam El Ouahabi
- Géochimie Et Environnement Sédimentaires (AGEs), Département de Géologie, UR Argile, University of Liège, Liège, Belgium
| | - Joseph Mbadcam Ketcha
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - El Khadir Gharibi
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco.
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22
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Synthesis and characterization of magnetic ZnCl2-activated carbon produced from coconut shell for the adsorption of methylene blue. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130071] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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23
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León G, Saura F, Hidalgo AM, Miguel B. Activated Olive Stones as a Low-Cost and Environmentally Friendly Adsorbent for Removing Cephalosporin C from Aqueous Solutions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:4489. [PMID: 33922644 PMCID: PMC8122866 DOI: 10.3390/ijerph18094489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/16/2022]
Abstract
In this paper, we describe the removal of cephalosporin C (CPC) from aqueous solutions by adsorption onto activated olive stones (AOS) in a stirred tank. For comparative purposes, several experiments of adsorption onto commercial granular activated carbon were carried out. A quantum study of the different species of cephalosporin C that, depending on the pH, exist in aqueous solution pointed to a favorable mass transfer process during adsorption. Activated olive stones were characterized by SEM, EDX and IR techniques and their pHzc was determined. A 10-3 M HCl cephalosporin C solution has been selected for the adsorption experiments because at the pH of that solution both electrostatic and hydrogen bond interactions are expected to be established between the adsorbate and the adsorbent. The adsorption process is best described by the Freundlich isotherm model and the pseudo-second-order kinetic model, while the adsorption mechanism is mainly controlled by film diffusion. Under the conditions studied, the adsorption process is of a physical nature, endothermic and spontaneous. Comparison of the adsorption results obtained in this paper with those of other authors shows that the efficiency of AOS is 20% of that of activated carbon but 65% higher than that of the XAD-2 adsorbent. Considering its low price, abundance, easy accessibility and eco-compatibility, the use of activated olive stones as adsorbents for the removal of emerging pollutants from aqueous solutions represents an interesting possibility from both the economic and the environmental points of view.
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Affiliation(s)
- Gerardo León
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain; (F.S.); (B.M.)
| | - Francisco Saura
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain; (F.S.); (B.M.)
| | - Asunción María Hidalgo
- Department Chemical Engineering, Campus of Espinardo, University of Murcia, 30100 Murcia, Spain;
| | - Beatriz Miguel
- Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain; (F.S.); (B.M.)
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24
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Melhaoui R, Miyah Y, Kodad S, Houmy N, Addi M, Abid M, Mihamou A, Serghini-Caid H, Lairini S, Tijani N, Hano C, Elamrani A. On the Suitability of Almond Shells for the Manufacture of a Natural Low-Cost Bioadsorbent to Remove Brilliant Green: Kinetics and Equilibrium Isotherms Study. ScientificWorldJournal 2021; 2021:6659902. [PMID: 33603573 PMCID: PMC7868153 DOI: 10.1155/2021/6659902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/01/2021] [Accepted: 01/16/2021] [Indexed: 12/07/2022] Open
Abstract
Almond production generates a large number of coproducts, but the farmer's interest mainly focuses on the nutritional and commercial aspects of the kernel for getting the best return from their harvests. Thus, almond coproducts such as almond shells that represent more than 70% of biomass remain underexplored. In this work, the suitability of almond shell powder (ASP) as a natural low-cost adsorbent was evaluated in the adsorption of brilliant green dye (BG), which is known as a chemical pollutant. Brunauer-Emmett-Teller (BET) method, for the determination of specific surface area, Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) techniques were performed to characterize the ASP adsorbent. The batch adsorption kinetic study for the removal of BG dye was carried out by varying pH, temperature, initial concentration of the dye, bioadsorbent dose, and contact time. It was found that 98% of BG dye is removed under the following optimal experimental conditions: ASP bioadsorbent dose of 1 g/L at T = 25°C, pH = 6.8, and C 0 = 1 g/L, which proves that ASP can be used as an excellent low-cost bioadsorbent for the removal of BG dye from wastewater. The experimental isotherm data were analyzed using Freundlich and Langmuir models. The results show the best correlation with single-layer adsorption, and the adsorption kinetics seems to follow a pseudo-second-order model.
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Affiliation(s)
- R. Melhaoui
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - Y. Miyah
- Laboratoire de Catalyse, Matériaux et Environment, EST, Université Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - S. Kodad
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - N. Houmy
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - M. Addi
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - M. Abid
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - A. Mihamou
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - H. Serghini-Caid
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - S. Lairini
- Laboratoire de Catalyse, Matériaux et Environment, EST, Université Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - N. Tijani
- Equipe de Recherche, Membranes, Matériaux et Procédés de Séparation, Faculté des Sciences, Université Moulay Ismaîl, Meknès, Morocco
| | - C. Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, Orleans, France
| | - A. Elamrani
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
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25
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Synthesis and characterization of new polymers derived from 2-methyl-m-phenylenediamine as an effective adsorbent for cationic dye removal. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.09.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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26
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Yu H, Gu L, Chen L, Wen H, Zhang D, Tao H. Activation of grapefruit derived biochar by its peel extracts and its performance for tetracycline removal. BIORESOURCE TECHNOLOGY 2020; 316:123971. [PMID: 32777718 DOI: 10.1016/j.biortech.2020.123971] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/29/2020] [Accepted: 08/02/2020] [Indexed: 06/11/2023]
Abstract
A novel adsorbent derived from grapefruit peel (GP) based biochar (GPBC) was synthesized by combined carbonization of GP and subsequent activation by GP extracts. Compared to biochar without extracts activation, the technique granted GPBC-20 (with 1:20 of solid-solution ratio) more abundant surface functional groups, which exerts the adsorbent superior performance for tetracycline (TC) adsorption (37.92 mg/g v.s. 16.64 mg/g). The adsorption kinetics, isotherms and thermodynamics models were further used to evaluate the adsorption behavior of GPBC. The enhanced adsorption was analyzed by characterization of fresh and used GPBC, revealing that the adsorption mechanism was comprised of pore filling, charge interaction and chemical bonding. The comprehensive investigation of using agricultural waste extracts as activator to prepare its raw materials-based adsorbents may be of great significance for enhanced resource utilization.
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Affiliation(s)
- Haixiang Yu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Lin Gu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Lu Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Haifeng Wen
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China; Shanghai University of International Business and Economics, Shanghai 201620, PR China
| | - Hong Tao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China
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27
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Kaya İ, Yağmur HK. Synthesis and characterization of poly(3,5-diaminobenzoic acid) via enzymatic and oxidative polymerization and application in methylene blue adsorption. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Côte C, Piram A, Lacoste A, Josse D, Doumenq P. Sorption of G-agent simulant vapours on human scalp hair. Chem Biol Interact 2020; 326:109111. [DOI: 10.1016/j.cbi.2020.109111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/27/2020] [Accepted: 04/16/2020] [Indexed: 10/24/2022]
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29
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Sanchez Ramirez DO, Periolatto M, Carletto RA, Varesano A, Vineis C, Tonetti C, Bongiovanni R. Cr (VI) adsorption from aqueous solutions on grafted chitosan. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Diego O. Sanchez Ramirez
- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manufatturiero Avanzato (STIIMA)Dipartamento di Ingegneria ICT e Tecnologie per l'Energie e i Trasporti (DIITET)‐National Research Council of Italy Biella Italy
| | - Monica Periolatto
- Politecnico di Torino – Dipartimento di Scienza Applicata e Tecnologia Turin Italy
| | - Riccardo A. Carletto
- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manufatturiero Avanzato (STIIMA)Dipartamento di Ingegneria ICT e Tecnologie per l'Energie e i Trasporti (DIITET)‐National Research Council of Italy Biella Italy
| | - Alessio Varesano
- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manufatturiero Avanzato (STIIMA)Dipartamento di Ingegneria ICT e Tecnologie per l'Energie e i Trasporti (DIITET)‐National Research Council of Italy Biella Italy
| | - Claudia Vineis
- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manufatturiero Avanzato (STIIMA)Dipartamento di Ingegneria ICT e Tecnologie per l'Energie e i Trasporti (DIITET)‐National Research Council of Italy Biella Italy
| | - Cinzia Tonetti
- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manufatturiero Avanzato (STIIMA)Dipartamento di Ingegneria ICT e Tecnologie per l'Energie e i Trasporti (DIITET)‐National Research Council of Italy Biella Italy
| | - Roberta Bongiovanni
- Politecnico di Torino – Dipartimento di Scienza Applicata e Tecnologia Turin Italy
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30
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Bebić J, Banjanac K, Rusmirović J, Ćorović M, Milivojević A, Simović M, Marinković A, Bezbradica D. Amino-modified kraft lignin microspheres as a support for enzyme immobilization. RSC Adv 2020; 10:21495-21508. [PMID: 35518748 PMCID: PMC9054402 DOI: 10.1039/d0ra03439h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/01/2020] [Indexed: 11/21/2022] Open
Abstract
In this research, it has been demonstrated that amino-modified microspheres (A-LMS) based on bio-waste derived material, such as kraft lignin, have good prospects in usage as a support for enzyme immobilization, since active biocatalyst systems were prepared by immobilizing β-galactosidase from A. oryzae and laccase from M. thermophila expressed in A. oryzae (Novozym® 51003) onto A-LMS. Two types of A-LMS were investigated, with different emulsifier concentrations (5 wt% and 10 wt%), and microspheres produced using 5 wt% of emulsifier (A-LMS_5) showed adequate pore shape, size and distribution for enzyme attachment. The type of interactions formed between enzymes (β-galactosidase and laccase) and A-LMS_5 microspheres demonstrated that β-galactosidase is predominantly attached via electrostatic interactions while attachment of laccase is equally governed by electrostatic and hydrophobic interactions. Furthermore, the A-LMS_5-β-galactosidase exhibited specificity towards recognized prebiotics (galacto-oligosaccharides (GOS)) synthesis with 1.5-times higher GOS production than glucose production, while for environmental pollutant lindane degradation, the immobilized laccase preparation exhibited high activity with a minimum remaining lindane concentration of 22.4% after 6 days. Thus, this novel enzyme immobilization support A-LMS_5 has potential for use in green biotechnologies.
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Affiliation(s)
- Jelena Bebić
- Directorate of Measures and Precious Metals Mike Alasa 14 11000 Belgrade Serbia
| | - Katarina Banjanac
- Directorate of Measures and Precious Metals Mike Alasa 14 11000 Belgrade Serbia
- Innovation Centre of Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Jelena Rusmirović
- Military Technical Institute Ratka Resanovića 1 11000 Belgrade Serbia
| | - Marija Ćorović
- Department of Biochemical Engineering and Biotechnology, Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Ana Milivojević
- Innovation Centre of Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Milica Simović
- Department of Biochemical Engineering and Biotechnology, Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Aleksandar Marinković
- Department of Organic Chemistry, Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Dejan Bezbradica
- Department of Biochemical Engineering and Biotechnology, Faculty of Technology and Metallurgy, University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
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31
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Yang H, Luo B, Zhang Y, Zhou B, Manzoor Ahmed S, Liu H, Liu X, He Y, Xia S. Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics. ACS OMEGA 2020; 5:7683-7692. [PMID: 32280912 PMCID: PMC7144149 DOI: 10.1021/acsomega.0c00622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 03/12/2020] [Indexed: 05/30/2023]
Abstract
In this paper, the adsorption of humic acid (HA) on natural maifan stone (MS) in aqueous medium was investigated. The changes in MS after adsorption have been characterized explicitly. The adsorption behavior was studied by varying the factors of pH (5-10), reaction time (10-180 min), initial HA concentration (5-50 mg/L), adsorbent dosage (0.1-1.2 g), and temperature (25-45 °C). The kinetics of the adsorption process of HA was fitted well with the pseudo-second-order model (R 2 = 0.99). The isothermal results revealed that the adsorption process is favorable, and highly fitting Langmuir models (R 2 > 0.99) were used. Additionally, the obtained maximum adsorption capacity of MS for HA was approximately 1 mg/g. The adsorption process of HA onto MS was endothermic according to the thermodynamic study. The changes in the excitation-emission-matrix of HA and the X-ray diffraction of MS after adsorption indicate the interaction of HA and MS. However, the reason for these changes is still unclear. Thus, the results show that the natural MS exhibited a certain adsorption capacity for HA. It is promising to develop novel natural MS-based materials for adsorption of HA.
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Affiliation(s)
- Hang Yang
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Binhua Luo
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Yi Zhang
- Equipment
Company of Dongfeng Motor Co., Ltd, Shiyan 442000, China
| | - Boxun Zhou
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Sanjrani Manzoor Ahmed
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Huamin Liu
- Sinopec
Jianghan Oilfield Branch, Chongqing 400000, China
| | - Xiaowen Liu
- Sinopec
Jianghan Oilfield Branch, Chongqing 400000, China
| | - Yong He
- Sinopec
Jianghan Oilfield Branch, Chongqing 400000, China
| | - Shibin Xia
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
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32
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Bebić J, Banjanac K, Ćorović M, Milivojević A, Simović M, Marinković A, Bezbradica D. Immobilization of laccase from Myceliophthora thermophila on functionalized silica nanoparticles: Optimization and application in lindane degradation. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.12.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Yu R, Yu X, Xue B, Liao J, Zhu W, Tian S. Adsorption of chlortetracycline from aquaculture wastewater using modified zeolites. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:573-584. [PMID: 31983268 DOI: 10.1080/10934529.2020.1717275] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/06/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
In this study, lanthanum modified zeolite (La-Z) was used to adsorb chlortetracycline (CTC) from aquaculture wastewater. La-Z was characterized by SEM, TEM, EDS, XRD, FTIR and BET. The effects various factors on the adsorption of CTC by La-Z were investigated, including the lanthanum modification concentration on zeolites, the dosage of La-Z, solution pH and reaction time. Orthogonal experiments were performed to determine the optimal adsorption conditions. Adsorption kinetics were studied by quasi-first-order model, quasi-second-order model, Weber-Morris, Boyd and Bangham models, while isotherms were analyzed by the Langmuir and Freundlich models. The removal rate reached 98.4%, when the modified concentration was 0.02 mol/L, the adsorbent dosage was 0.04 g, the initial concentration of CTC was 5 mg/L, the adsorption time was 20 min, and the pH was 7. The initial CTC concentration had the greatest influence on the adsorption process. The kinetic results showed a significant linear correlation between the experimental results and the quasi-second-order kinetic model. From the results of the internal diffusion model, it was found that the La-Z adsorption rate was controlled by both internal diffusion and external diffusion, in a multi-step process. The adsorption isotherm conforms to the Langmuir model, with the maximum adsorption quantity reaching 127.55 mg/g. Thermodynamic analysis showed that the adsorption process was an endothermic process of entropy increase, which occurs spontaneously.
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Affiliation(s)
| | - Xiaocai Yu
- College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian, Liaoning Province, China
| | - Bining Xue
- College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian, Liaoning Province, China
| | - Jiaqi Liao
- College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian, Liaoning Province, China
| | - Wanting Zhu
- College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian, Liaoning Province, China
| | - Siyao Tian
- College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian, Liaoning Province, China
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34
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Radiation Synthesis of Superabsorbent Hydrogel (Wheat Flour/Acrylamide) for Removal of Mercury and Lead Ions from Waste Solutions. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01350-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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35
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Adsorption of gallic acid, propyl gallate and polyphenols from Bryophyllum extracts on activated carbon. Sci Rep 2019; 9:14830. [PMID: 31616022 PMCID: PMC6794375 DOI: 10.1038/s41598-019-51322-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/27/2019] [Indexed: 11/09/2022] Open
Abstract
The adsorption of gallic acid (GA) and propyl gallate (PG) on activated carbon (AC) was studied as a function of the AC mass and temperature. Clean first order behavior was obtained for at least three half-lives and the equilibrium was reached after ∼4 h contact time. An increase in the temperature (T = 20–40 °C) increases their adsorption rate constant values (k1) by 2.5 fold but has a negligible effect on the amount of antioxidant adsorbed per mass of AC at equilibrium. We also analyzed the adsorption process of polyphenols from Bryophyllum extracts and ca 100% of the total amount of the polyphenols in the extract were adsorbed when using 7 mg of AC. Results can be explained on the basis of the Freundlich isotherm but do not fit the Langmuir model. Results suggest that the combination of emerging in vitro plant culture technologies with adsorption on activated carbon can be successfully employed to remove important amounts of bioactive compounds from plant extracts by employing effective, sustainable and environmental friendly procedures.
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36
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Gülen J, Aslan S. Adsorption of 2,4-Dichlorophenoxyacetic Acid from Aqueous Solution Using Carbonized Chest Nut as Low Cost Adsorbent: Kinetic and Thermodynamic. Z PHYS CHEM 2019. [DOI: 10.1515/zpch-2019-0004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The activated carbon was made of carbonized chest nut shell (CCS) and used as low cost adsorbent for 2,4-D (2,4-dichlorophenoxyacetic acid) removal. The experiments were conducted at different temperatures such as 35, 45 and 55 °C and this system represents as L type adsorption behavior. The experimental data were modelled using several isotherm models such as Langmuir, Freundlich, Temkin and Dubinin Radushkevich. The adsorption dynamics were searched by applying pseudo first, pseudo second and intra particle diffusion models. The thermodynamic approach was conducted for determining the thermodynamic values of ΔH°, ΔS° and ΔG°.
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Affiliation(s)
- Jale Gülen
- Yıldız Technical University , Chemical Engineering Department , 34210 Esenler , Istanbul
| | - Sabri Aslan
- Yıldız Technical University , Chemical Engineering Department , 34210 Esenler , Istanbul
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Hylocereus polyrhizus peel's high-methoxyl pectin: A potential source of hypolipidemic agent. Int J Biol Macromol 2019; 134:361-367. [DOI: 10.1016/j.ijbiomac.2019.03.143] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/25/2019] [Accepted: 03/21/2019] [Indexed: 12/19/2022]
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38
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Liu C, Li Y, Hou Y. Preparation of a Novel Lignin Nanosphere Adsorbent for Enhancing Adsorption of Lead. Molecules 2019; 24:molecules24152704. [PMID: 31349562 PMCID: PMC6696307 DOI: 10.3390/molecules24152704] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/20/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022] Open
Abstract
Carboxymethyl lignin nanospheres (CLNPs) were synthesized by a two-step method using microwave irradiation and antisolvent. The morphology and structure of CLNPs were characterized by 31P-NMR, FTIR, and SEM, and the results showed that they had an average diameter of 73.9 nm, a surface area of 8.63 m2 or 3.2 times larger than the original lignin, and abundant carboxyl functional groups of 1.8 mmol/g. The influence of dosage, pH, contact time, and concentration on the adsorption of metal ions onto CLNPs were analyzed, and the maximum adsorption capacity of CLNPs for Pb(II) was found to be 333.26 mg/g, which is significantly higher than other lignin-based adsorbents and conventional adsorbents. Adsorption kinetics and isotherms indicated that the adsorption of lead ions in water onto CLNPs followed the pseudo-second-order model based on monolayer chemisorption mechanism. The main chemical interaction between CLNPs and lead ions was chelation. CLNPs also showed an excellent recycling performance, with only 27.0% adsorption capacity loss after 10 consecutive adsorption–desorption cycles.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
- National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China
| | - Youming Li
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
- National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China
| | - Yi Hou
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
- National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China.
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39
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Preparation and characterization of a novel diatomite-based composite and investigation of its adsorption properties for uranyl ions. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06662-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Fe 3O 4@C Matrix with Tailorable Adsorption Capacities for Paracetamol and Acetylsalicylic Acid: Synthesis, Characterization, and Kinetic Modeling. Molecules 2019; 24:molecules24091727. [PMID: 31058855 PMCID: PMC6539884 DOI: 10.3390/molecules24091727] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/16/2019] [Accepted: 04/29/2019] [Indexed: 11/29/2022] Open
Abstract
In this study Fe3O4@C matrix was obtained by combustion method and used hereafter as adsorbent for paracetamol and acetylsalicylic acid removal from aqueous solutions. The Fe3O4@C matrix was characterized by electronic microscopy, X-ray diffraction, thermal analysis, Fourier-transform infrared spectroscopy, and magnetic measurements. Two kinetic models of pseudo first-order and pseudo-second-order for both paracetamol and acetylsalicylic acid were studied. The experimental data were investigated by Langmuir, Freundlich, and Redlich–Peterson adsorption isotherm models. The adsorption followed the Redlich–Peterson and pseudo-second-order models with correlation coefficients R2 = 0.98593 and R2 = 0.99996, respectively, for the adsorption of paracetamol; for the acetylsalicylic acid, the adsorption followed the Freundlich and pseudo-second-order model, with correlation coefficients R2 = 0.99421 and R2 = 0.99977, respectively. The equilibrium was quickly reached after approximately 1h for the paracetamol adsorption and approximately 2h for acetylsalicylic acid adsorption. According to the Langmuir isotherm, the maximum adsorption capacity of the magnetic matrix was 142.01 mg·g−1 for the retention of paracetamol and 234.01 mg·g−1 for the retention of acetylsalicylic acid. The benefits of using the Fe3O4@C matrix are the low cost of synthesis and its easy and fast separation from solution by using an NdBFe magnet.
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41
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Battas A, Gaidoumi AE, Ksakas A, Kherbeche A. Adsorption Study for the Removal of Nitrate from Water Using Local Clay. ScientificWorldJournal 2019; 2019:9529618. [PMID: 30853867 PMCID: PMC6377948 DOI: 10.1155/2019/9529618] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/06/2019] [Indexed: 11/18/2022] Open
Abstract
Our research aimed at the removal of nitrate ions through adsorption by local clay. A series of batch experiments were conducted to examine the effects of contact time, adsorbent characteristics, initial concentration of nitrate, pH of the solution, concentration, and granulometry of adsorbent. Adsorption isotherms studies indicated that local clay satisfies Freundlich's model. The rate of reaction follows pseudo-second-order kinetics. Local clay successfully adsorbs nitrates at pH acid. The adsorption capacity under optimal conditions was found to be 5.1 mg/g. The adsorption yield increases with adsorbent dose and decrease with initial concentration of nitrate. The local clay was characterized by the X-ray fluorescence method (XRF), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), scanning electronics microscopy (SEM), and measurement of specific surface area (BET). The results of the study indicated that local clay is useful materials for the removal of nitrates from aqueous solutions which can be used in water treatment without any chemical modification.
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Affiliation(s)
- A. Battas
- Laboratory of Catalysis, Materials and Environment, Higher School of Technology, Sidi Mohamed Ben Abdellah University, 30000 Fez, Morocco
| | - A. El Gaidoumi
- Laboratory of Catalysis, Materials and Environment, Higher School of Technology, Sidi Mohamed Ben Abdellah University, 30000 Fez, Morocco
| | - A. Ksakas
- Laboratory of Catalysis, Materials and Environment, Higher School of Technology, Sidi Mohamed Ben Abdellah University, 30000 Fez, Morocco
| | - A. Kherbeche
- Laboratory of Catalysis, Materials and Environment, Higher School of Technology, Sidi Mohamed Ben Abdellah University, 30000 Fez, Morocco
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42
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Salas-Enríquez BG, Torres-Huerta AM, Conde-Barajas E, Domínguez-Crespo MA, Negrete-Rodríguez MLX, Dorantes-Rosales HJ, López-Oyama AB. Stabilized landfill leachate treatment using Guadua amplexifolia bamboo as a source of activated carbon: kinetics study. ENVIRONMENTAL TECHNOLOGY 2019; 40:768-783. [PMID: 29157149 DOI: 10.1080/09593330.2017.1407828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 11/16/2017] [Indexed: 06/07/2023]
Abstract
In the present study, the characteristics of leachate generated from dumpsite called 'Zapote' located in southern region of Tamaulipas, Mexico were evaluated. The adsorption of non-biodegradable organic matter measured as chemical oxygen demand (COD), color and heavy metals from leachate on activated carbon (AC) prepared in acid media from Guadua amplexifolia bamboo has been studied. In addition, the computation of kinetic parameters during the adsorption process as well as the most probable mechanisms was determined. The ACs were analyzed by using scanning electron microscopy and Fourier transform infrared spectroscopy. The experimental data showed that the ACs removed up to 81.4% of color and reduced COD up to 91.6% after 9 h of reaction at 60°C. For heavy metals, the maximum adsorption uptake was achieved at pH = 8.0 within 20 min with removal percentages of 87.0% (Pb(II)), 43.0% (Cu(II)) and 30.5% (Ni(II)). A pseudo-second-order model explained the adsorption kinetics most effectively for Pb, Ni and Cu, while a pseudo-first order was found for Zn. The AC synthesized from the G. amplexifolia species could be potentially used as an effective adsorbent in the reduction of COD, and removal of color and heavy metals.
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Affiliation(s)
| | | | - Eloy Conde-Barajas
- b Department of Environmental Engineering , Laboratory of Environmental Biotechnology, Tecnológico Nacional de México, Instituto Tecnológico de Celaya , Guanajuato , Mexico
| | | | - María L X Negrete-Rodríguez
- b Department of Environmental Engineering , Laboratory of Environmental Biotechnology, Tecnológico Nacional de México, Instituto Tecnológico de Celaya , Guanajuato , Mexico
| | | | - Ana B López-Oyama
- a Instituto Politécnico Nacional, CICATA-Altamira, CIAMS , Mexico City , Mexico
- d CONACYT-Instituto Politécnico Nacional, CICATA-Altamira, CIAMS , Mexico City , Mexico
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43
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Dinh VP, Huynh TDT, Le HM, Nguyen VD, Dao VA, Hung NQ, Tuyen LA, Lee S, Yi J, Nguyen TD, Tan LV. Insight into the adsorption mechanisms of methylene blue and chromium(iii) from aqueous solution onto pomelo fruit peel. RSC Adv 2019; 9:25847-25860. [PMID: 35530102 PMCID: PMC9070119 DOI: 10.1039/c9ra04296b] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/06/2019] [Indexed: 12/07/2022] Open
Abstract
In this study, the biosorption mechanisms of methylene blue (MB) and Cr(iii) onto pomelo peel collected from our local fruits are investigated by combining experimental analysis with ab initio simulations.
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Affiliation(s)
- Van-Phuc Dinh
- Institute of Fundamental and Applied Sciences
- Duy Tan University
- Ho Chi Minh City 700000
- Vietnam
| | | | - Hung M. Le
- Center for Innovative Materials and Architectures (INOMAR)
- Vietnam National University (VNUHCM)
- Ho Chi Minh City
- Vietnam
| | | | - Vinh-Ai Dao
- Institute of Fundamental and Applied Sciences
- Duy Tan University
- Ho Chi Minh City 700000
- Vietnam
| | - N. Quang Hung
- Institute of Fundamental and Applied Sciences
- Duy Tan University
- Ho Chi Minh City 700000
- Vietnam
| | - L. Anh Tuyen
- Center for Nuclear Techniques
- Vietnam Atomic Energy Institute
- Ho Chi Minh City, 700000
- Vietnam
| | - Sunhwa Lee
- School of Information and Communication Engineering
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Junsin Yi
- School of Information and Communication Engineering
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Trinh Duy Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)
- Nguyen Tat Thanh University
- Ho Chi Minh City
- Vietnam
| | - L. V. Tan
- Industrial University of Ho Chi Minh City
- HCM City
- Vietnam
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44
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Ruksrithong C, Phattarapattamawong S. Removals of estrone and 17β-estradiol by microalgae cultivation: kinetics and removal mechanisms. ENVIRONMENTAL TECHNOLOGY 2019; 40:163-170. [PMID: 28933248 DOI: 10.1080/09593330.2017.1384068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 09/16/2017] [Indexed: 06/07/2023]
Abstract
Occurrence of estrone (E1) and 17β-estradiol (E2) in the environment has attracted the public attention since E1 and E2 cause estrogenicity in aquatic microorganisms. Microalgae cultivation in wastewater is considered as an economical practice since microalgae can be used for not only pollutant removals, but also as energy resources. This research aims to investigate the removals of E1 and E2 in synthetic wastewater by microalgae (i.e. Chlorella vulgaris and Scenedesmus obliquus). At the steady state, S. obliquus removed E1 and E2 by 91% and 99%, respectively. C. vulgaris removed E1 and E2 by 52% and 99%, respectively. Interestingly, the occurrence of E1 was observed when E2 was degraded by microalgae. The predominant mechanism for E1 and E2 removals was biodegradation, followed by adsorption. The adsorption kinetic and isotherm for both E1 and E2 can be described by the pseudo-second-order and Freundlich model. The addition of E1 and E2 resulted in a higher lipid content of microalgae by 1-9%.
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Affiliation(s)
- Chantima Ruksrithong
- a Department of Environmental Engineering, Faculty of Engineering , King Mongkut's University of Technology Thonburi , Bangkok , Thailand
| | - Songkeart Phattarapattamawong
- a Department of Environmental Engineering, Faculty of Engineering , King Mongkut's University of Technology Thonburi , Bangkok , Thailand
- b Research Program in Hazardous Substance Management in Agricultural Industry, Center of Excellence on Hazardous Substance Management (HSM) , Bangkok , Thailand
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Nakhjiri MT, Bagheri Marandi G, Kurdtabar M. Effect of bis[2-(methacryloyloxy)ethyl] phosphate as a crosslinker on poly(AAm-co-AMPS)/Na-MMT hydrogel nanocomposite as potential adsorbent for dyes: kinetic, isotherm and thermodynamic study. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1625-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fenti A, Salvestrini S. Analytical solution of the Langmuir-based linear driving force model and its application to the adsorption kinetics of boscalid onto granular activated carbon. REACTION KINETICS MECHANISMS AND CATALYSIS 2018. [DOI: 10.1007/s11144-018-1435-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Srikantan C, Suraishkumar GK, Srivastava S. Effect of light on the kinetics and equilibrium of the textile dye (Reactive Red 120) adsorption by Helianthus annuus hairy roots. BIORESOURCE TECHNOLOGY 2018; 257:84-91. [PMID: 29486410 DOI: 10.1016/j.biortech.2018.02.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/14/2018] [Accepted: 02/16/2018] [Indexed: 06/08/2023]
Abstract
The study demonstrates for the first time that light influences the adsorption equilibrium and kinetics of a dye by root culture system. The azo dye (Reactive Red 120) adsorption by the hairy roots of H. annuus followed a pseudo first-order kinetic model and the adsorption equilibrium parameters were best estimated using Langmuir isotherm. The maximum dye adsorption capacity of the roots increased 6-fold, from 0.26 mg g-1 under complete dark conditions to 1.51 mg g-1 under 16/8 h light/dark photoperiod. Similarly, adsorption rate of the dye and removal (%) also increased in the presence of light, irrespective of the initial concentration of the dye (20-110 mg L-1). The degradation of the azo dye upon adsorption by the hairy roots of H. annuus was also confirmed. In addition, a strategy for simultaneous dye removal and increased alpha-tocopherol (industrially relevant) production by H. annuus hairy root cultures has been proposed and demonstrated.
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Affiliation(s)
- Chitra Srikantan
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, India
| | - G K Suraishkumar
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Smita Srivastava
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, India.
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Yun JI, Bhattarai S, Yun YS, Lee YS. Synthesis of thiourea-immobilized polystyrene nanoparticles and their sorption behavior with respect to silver ions in aqueous phase. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:398-407. [PMID: 29096253 DOI: 10.1016/j.jhazmat.2017.10.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/19/2017] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
Although a thiourea-immobilized polystyrene sorbent has been reported to exhibit high Ag+ sorption capacity (135mg/g), it is not stable under the acidic conditions commonly employed for desorption. In this research, we synthesized novel thiourea-immobilized polystyrene (TA-PS) nanoparticles to be highly acid resistant via a two-step procedure from polystyrene nanoparticles: acetylation and the subsequent immobilization of thiourea. We investigated the influences of pH, contact time, and initial concentration of AgNO3 solution on the Ag+ sorption of the polymer nanoparticles and estimated the maximum Ag+ sorption capacity to be 190±5mg/g at a pH of 6. The sorption performance did not significantly decrease in tap water containing competing ions. The sorption kinetic data were well fitted to the pseudo-second-order kinetic model. Overall, the TA-PS nanoparticles exhibited a high Ag+ sorption capacity and high selectivity against alkaline and alkaline earth-metal ions. In particular, their high acid resistance allows them to be used for long time periods in sorption-desorption processes.
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Affiliation(s)
- Ji-In Yun
- Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeounju-si, Jeollabuk-do 561-756, Republic of Korea
| | - Saurabha Bhattarai
- Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeounju-si, Jeollabuk-do 561-756, Republic of Korea
| | - Yeoung-Sang Yun
- Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeounju-si, Jeollabuk-do 561-756, Republic of Korea
| | - Youn-Sik Lee
- Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeounju-si, Jeollabuk-do 561-756, Republic of Korea.
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Spiandore M, Souilah-Edib M, Piram A, Lacoste A, Josse D, Doumenq P. Desorption of sulphur mustard simulants methyl salicylate and 2-chloroethyl ethyl sulphide from contaminated scalp hair after vapour exposure. CHEMOSPHERE 2018; 191:721-728. [PMID: 29078194 DOI: 10.1016/j.chemosphere.2017.09.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 09/15/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Chemical warfare agents have been used to incapacitate, injure or kill people, in a context of war or terrorist attack. It has previously been shown that hair could trap the sulphur mustard simulants methyl salicylate and 2-chloroethyl ethyl sulphide. In order to investigate simulants persistency in hair after intense vapour exposure, their desorption kinetics were studied by using two complementary methods: hair residual content measurement and desorbed vapour monitoring. Results showed that both simulants were detected in air and could be recovered from hair 2 h after the end of exposure. Longer experiments with methyl salicylate showed that it could still be recovered from hair after 24 h. Our data were fitted with several kinetic models and best correlation was obtained with a bimodal first-order equation, suggesting a 2-step desorption kinetics model: initial fast regime followed by a slower desorption. 2-chloroethyl ethyl sulphide was also detected in the immediate environment after hair exposure for 2 h, and hair simulant content decreased by more than 80%. Our results showed that hair ability to release formerly trapped chemical toxics could lead to health hazard. Their persistency however confirmed the potentiality of hair analysis as a tool for chemical exposure assessment.
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Affiliation(s)
| | | | - Anne Piram
- Aix Marseille Univ, CNRS, LCE, Marseille, France.
| | - Alexandre Lacoste
- Bataillon des Marins Pompiers de Marseille (BMPM), 13303, Marseille, France
| | - Denis Josse
- Service Départemental d'Incendie et de Secours des Alpes-Maritimes (SDIS06), 06271, Villeneuve-Loubet, France
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