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Biosorption of Hexavalent Chromium by Bacillus megaterium and Rhodotorula sp. Inactivated Biomass. Processes (Basel) 2023. [DOI: 10.3390/pr11010179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Due to the adverse effects of hexavalent chromium (Cr6+) on human health and the quality of the environment, the scientific community has invested a lot of effort to solve this pollution problem. Thus, implementing sustainable alternatives for Cr6+ elimination by exploiting the capacity of microbial biomass to retain heavy metals by biosorption is considered an economic and eco-friendly solution, compared to the conventional physico-chemical processes. However, the ability of microorganisms to remove Cr6+ from liquid effluents can strongly be affected by biotic and abiotic factors. With these issues in mind, the main purpose of this paper was to investigate Cr6+ biosorption on Bacillus megaterium and Rhodotorula sp. biomass inactivated by thermal treatments, exploring the effects of some factors such as: pH, biosorbent dose, initial concentration of the metal in solution, temperature and contact time between the biosorbent and the metal ions on process effectiveness. The results showed that Cr6+ removal by biosorption on the selected microorganisms was strongly influenced by the pH of the solution which contains chromium, the reduction being the principal mechanism involved in hexavalent chromium biosorption. Equilibrium and kinetic studies were also performed, together with SEM-EDX and FTIR spectra, to explain the mechanisms of the biosorption process on the selected biomasses. Maximum uptake capacities of 34.80 mg/g biosorbent and 47.70 mg/g biosorbent were achieved by Bacillus megaterium and Rhodotorula sp., respectively, at pH 1, biosorbent dosage of 8 g/L, 25 °C, after a contact time of 48 h and an initial Cr6+ concentration in solution of 402.52 mg/L. The experimental results showed that Cr6+ biosorption by selected microorganisms followed the Elovich model, the values of the correlation coefficients being 0.9868 and 0.9887, respectively. The Freundlich isotherm model best describes the Cr6+ biosorption by Bacillus megaterium and Rhodotorula sp., indicating that a multilayer biosorption mainly controls the process and is conducted on heterogeneous surfaces with uniformly distributed energy.
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Duan S, Gu M, Tao M, Huang K. Adsorption characteristics and thermodynamic property fields of methane and Sichuan Basin shales. ADSORPTION 2022. [DOI: 10.1007/s10450-021-00352-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Application of Unmodified Brachystegia spiciformis Leaf Biomass in the Adsorption of Nitrate Ions. CHEMISTRY AFRICA 2021. [DOI: 10.1007/s42250-021-00282-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Almeida ACM, do Nascimento RA, Amador ICB, Santos TCDS, Martelli MC, de Faria LJG, Ribeiro NFDP. Chemically activated red mud: assessing structural modifications and optimizing adsorption properties for hexavalent chromium. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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González-López ME, Laureano-Anzaldo CM, Pérez-Fonseca AA, Arellano M, Robledo-Ortíz JR. A Critical Overview of Adsorption Models Linearization: Methodological and Statistical Inconsistencies. SEPARATION & PURIFICATION REVIEWS 2021. [DOI: 10.1080/15422119.2021.1951757] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Martín E. González-López
- Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara,Guadalajara, Jalisco, Mexico
| | | | - Aida A. Pérez-Fonseca
- Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara,Guadalajara, Jalisco, Mexico
| | - Martín Arellano
- Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara,Guadalajara, Jalisco, Mexico
| | - Jorge R. Robledo-Ortíz
- Departamento de Madera, Celulosa y Papel, CUCEI, Universidad de Guadalajara, Zapopan, Jalisco, Mexico
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Vivas EL, Cho K. Efficient adsorptive removal of Cobalt(II) ions from water by dicalcium phosphate dihydrate. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 283:111990. [PMID: 33513451 DOI: 10.1016/j.jenvman.2021.111990] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/16/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Although the radionuclide 60Co is widely used, its presence in various effluents demands its removal to preclude environmental pollution and detrimental effects on human health. This study investigated the batch adsorption performance of a potential cobalt adsorbent, dicalcium phosphate dihydrate (DCPD), in immobilizing Co2+ from water. The influences of solution pH, contact time, initial concentration, and competing cations were examined and discussed. Stable cobalt uptake was observed at pH 4-8. The sorption kinetics showed a multi-stage uptake profile, implying that several mechanisms are involved in the adsorption process. Microscopy and structural analysis revealed that DCPD decomposes to its anhydrous form during adsorption, which explains the multistep curve over the entire adsorption period. However, the non-apatitic transformation is not exclusive to cobalt uptake. Intraparticle diffusion also contributed to the overall removal kinetics of Co2+ from water. Considering the Sips isotherm model, the maximum Co2+ adsorption capacity of DCPD was 441 mg g-1. Cobalt uptake selectivity dropped in the presence of Ca2+ ions, from 1.21 × 104 to 207 mL g-1, indicating DCPD would be more applicable in treating soft 60Co-contaminated waters. Structural analysis, elemental mapping, and qualitative analysis of solid residues confirmed that ion exchange is involved in the removal of cobalt from aqueous solutions.
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Affiliation(s)
- Eleazer L Vivas
- Department of Environmental Engineering, Pusan National University 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea
| | - Kuk Cho
- Department of Environmental Engineering, Pusan National University 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea.
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Isotherm and Kinetics Parametric Studies for Aqueous Hg(II) Uptake onto N-[2-(Methylamino)Ethyl]Ethane-1,2-Diaminated Acrylic Fibre. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-021-05416-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Khandelwal A, Narayanan N, Varghese E, Gupta S. Linear and Nonlinear Isotherm Models and Error Analysis for the Sorption of Kresoxim-Methyl in Agricultural Soils of India. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 104:503-510. [PMID: 32064538 DOI: 10.1007/s00128-020-02803-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
Kresoxim methyl sorption in soils of five agro-climatic zones of India varied from 41.6% to 84.7%. Highest sorption was recorded in organic carbon rich Almora soil. Isotherm parameters for linear and non-linear Freundlich and Temkin models were almost same, whereas Langmuir parameter Q0, for linear (1.60 to 9.434 μg g-1) and non-linear (8.48 to 17.129 μg g-1) models were quite different. For isotherms optimization different error functions such as sum of squares error (SSE), root mean square error (RMSE), Chi square error, hybrid fractional error (HYBRID) and average relative error (ARE) were calculated. Lowest error function values were obtained for Freundlich isotherm in all the soils except inceptisol (Kolkata) for which Langmuir isotherm gave the best fit. Statistical analysis using SAS 9.3 software and Tukey's HSD test revealed the significant effect (p < 0.001) of soil type on sorption. Sorption correlated positively with the organic carbon and clay contents of the soil.
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Affiliation(s)
- Ashish Khandelwal
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Neethu Narayanan
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Eldho Varghese
- Central Marine Fisheries Research Institute, Kochi, 682 018, India
| | - Suman Gupta
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
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Singh S, Kumar V, Datta S, Dhanjal DS, Sharma K, Samuel J, Singh J. Current advancement and future prospect of biosorbents for bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 709:135895. [PMID: 31884296 DOI: 10.1016/j.scitotenv.2019.135895] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/02/2019] [Accepted: 12/01/2019] [Indexed: 05/12/2023]
Abstract
The increasing use of heavy metals, synthetic dyes and pesticides is a major environmental concern. Wastewaters containing heavy metals and dyes, extensively released from small and large scale industries enter excessively into food chains resulting in mutagenesis, carcinogenicity and serious health impairments in living systems. The arrays of technologies are implemented to date to remediate both inorganic and organic contaminants from wastewaters. Among which, adsorption is the most attractive method as it employs eco-friendly, sustainable and cost-effective biomaterials. Use of bioadsorbents is advantageous over the conventional adsorbents. Clay, chitin, peat, microbial biomass and agricultural wastes are commonly used bioadsorbants. These bioadsorbents are extensively used for elimination of dyes, heavy metals, adsorption of toxic industrial effluents, removal of fertilizers/pesticides, atmospheric pollutants and nuclear waste from the environment. The current review presents state of the art knowledge on various types of biosorbents, their uses, and mechanism of action. Various strategies to enhance the efficiency of bioadsorbents and physicochemical conditions to remediate dyes and heavy metals from waste streams are also incorporated in this review. Use of nano-bioadsorbents in industries to minimize the hazardous effect of solid and liquid waste has also been discussed.
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Affiliation(s)
- Simranjeet Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Punjab Biotechnology Incubators, Mohali 160059, Punjab, India; Regional Advanced Water Testing Laboratory, Mohali 160059, Punjab, India
| | - Vijay Kumar
- Regional Ayurveda Research Institute for Drug Development, Gwalior 474009, MP, India
| | - Shivika Datta
- Department of Zoology, Doaba College Jalandhar, Punjab, India
| | - Daljeet Singh Dhanjal
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Kankan Sharma
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Jastin Samuel
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Waste Valorization Research Lab, Lovely Professional University, Phagwara - 144411, Punjab, India
| | - Joginder Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India.
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Saha A, Basak BB, Ponnuchamy M. Performance of activated carbon derived from Cymbopogon winterianus distillation waste for scavenging of aqueous toxic anionic dye Congo red: Comparison with commercial activated carbon. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1620277] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ajoy Saha
- ICAR-Directorate of Medicinal and Aromatic Plants Research, Anand, India
| | - Biraj Bandhu Basak
- ICAR-Directorate of Medicinal and Aromatic Plants Research, Anand, India
| | - Manivel Ponnuchamy
- ICAR-Directorate of Medicinal and Aromatic Plants Research, Anand, India
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11
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Saruchi, Kumar V. Adsorption kinetics and isotherms for the removal of rhodamine B dye and Pb+2 ions from aqueous solutions by a hybrid ion-exchanger. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.11.009] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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12
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Khan F, Wahab R, Hagar M, Alnoman R, Lutfullah, Rashid M. Nanotransition Materials (NTMs): Photocatalysis, Validated High Effective Sorbent Models Study for Organic Dye Degradation and Precise Mathematical Data's at Standardized Level. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E134. [PMID: 29495511 PMCID: PMC5869625 DOI: 10.3390/nano8030134] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 11/27/2022]
Abstract
The present work describes the synthesis of copper oxide nanoparticles (CuONPs) via a solution process with the aim of applying the nano-adsorbent for the reduction of methylene blue (MB) dye in alkaline media. These NPs were characterized via Field emission scanning electron microscopy (FE-SEM), X-ray diffraction, high-resolution Transmission electron microscopy (TEM), and ultra violet UV-visible spectroscopy to confirm their morphology and crystalline and optical properties in order to design an adsorption-degradation process. The photocatalytic CuONPs exhibited dynamic properties, great adsorption affinity during the chemisorption process, and operated at various modes with a strong interaction between the adsorbent and the adsorptive species, and equilibrium isotherm, kinetic isotherm, and thermodynamic activities in the presence of UV light. All basic quantities, such as concentration, pH, adsorbent dose, time, and temperature, were determined by an optimization process. The best-fitted adsorption Langmuir model (R² = 0.9988) and performance, including adsorption capacity (350.87 mg/g), photocatalytic efficiency (90.74%), and degradation rate constant (Ks = 2.23 ×10-2 min-1), illustrate good feasibility with respect to sorption-reduction reactions but followed a pseudo-second-order kinetic on the adsorbent surface, reaching an equilibrium point in 80 min. The thermodynamic analysis suggests that the adsorption reaction is spontaneous and endothermic in nature. The thermodynamic parameters such as enthalpy (∆H°), entropy (∆S°), and Gibbs free energy (∆G°) give effective results to support a chemical reduction reaction at 303 K temperature. The equilibrium isotherm and kinetic and thermodynamic models with error function analysis explore the potential, acceptability, accuracy, access to adsorbents, and novelty of an unrivaled-sorption system.
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Affiliation(s)
- Farheen Khan
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu 42353, Saudi Arabia; (M.E.H.); (R.A.)
| | - Rizwan Wahab
- Department of Zoology, College of Science King Saud University, Riyadh 11451, Saudi Arabia
- Al-Jeraisy, Chair for DNA Research, Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed Hagar
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu 42353, Saudi Arabia; (M.E.H.); (R.A.)
- Department of Chemistry, Faculty of Science, Alexandria University, Alexandria 21321, Egypt
| | - Rua Alnoman
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu 42353, Saudi Arabia; (M.E.H.); (R.A.)
| | - Lutfullah
- Department of Chemistry, Aligarh Muslim University, Aligarh UP 202002, India;
| | - Mohd Rashid
- Saraswati Devi Post Graduate College, Khadda Bazar, Kushinagar UP 274802, India;
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Cai XH, Lin RH, Wu J, He JB, Wu YC, Wang XY. Adsorption of ethylenediaminetetraacetic dianhydride modified oxalate decarboxylase on calcium oxalate. Biotech Histochem 2018; 93:220-229. [DOI: 10.1080/10520295.2017.1420820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- XH Cai
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - RH Lin
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - J Wu
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - JB He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - YC Wu
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - XY Wang
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
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15
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Using polymer coated nanoparticles for adsorption of micropollutants from water. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.08.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Akmil-Başar C, Durmaz G, Karabulut I, Önal Y. β-carotene rejection mechanism from organic medium by using activated carbon produced from waste biomass apricot. PARTICULATE SCIENCE AND TECHNOLOGY 2017. [DOI: 10.1080/02726351.2016.1156794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Gökhan Durmaz
- Food Engineering Department, İnönü University, Malatya, Turkey
| | - Ihsan Karabulut
- Food Engineering Department, İnönü University, Malatya, Turkey
| | - Yunus Önal
- Chemical Engineering Department, İnönü University, Malatya, Turkey
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Wahab R, Khan F, Kaushik NK, Musarrat J, Al-Khedhairy AA. Photocatalytic TMO-NMs adsorbent: Temperature-Time dependent Safranine degradation, sorption study validated under optimized effective equilibrium models parameter with standardized statistical analysis. Sci Rep 2017; 7:42509. [PMID: 28195174 PMCID: PMC5307350 DOI: 10.1038/srep42509] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/12/2017] [Indexed: 11/09/2022] Open
Abstract
In this paper, chemically synthesized copper oxide nanoparticles (CuO-NPs), were employed for two processes: one is photocatalytic degradation and second one adsorption for the sorption of safranine (SA) dye in an aqueous medium at pH = 12.01. The optimized analytes amount (nano-adsorbent = 0.10 g, conc. range of SA dye 56.13 ppm to 154.37 ppm, pH = 12.01, temperature 303 K) reached to equilibrium point in 80 min, which acquired for chemical adsorption-degradation reactions. The degredated SA dye data’s recorded by UV-visible spectroscopy for the occurrence of TMO-NMs of CuO-NPs at anticipated period of interval. The feasible performance of CuO-NPs was admirable, shows good adsorption capacity qm = 53.676 mg g−1 and most convenient to best fitted results establish by linear regression equation, corresponded for selected kinetic model (pseudo second order (R2 = 0.9981), equilibrium isotherm models (Freundlich, Langmuir, Dubnin-Radushkevich (D-R), Temkin, H-J and Halsey), and thermodynamic parameters (∆H° = 75461.909 J mol−1, ∆S° = 253.761 J mol−1, ∆G° = −1427.93 J mol−1, Ea = 185.142 J mol−1) with error analysis. The statistical study revealed that CuO-NPs was an effective adsorbent certified photocatalytic efficiency (η = 84.88%) for degradation of SA dye, exhibited more feasibility and good affinity toward adsorbate, the sorption capacity increases with increased temperature at equilibrium point.
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Affiliation(s)
- Rizwan Wahab
- Zoology Department, College of Science King Saud University, Riyadh 11451, Saudi Arabia.,Al-Jeraisy, Chair for DNA Research, Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Farheen Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh U.P. 202002, India
| | | | - Javed Musarrat
- Dept. of Ag. Microbiology, AMU, Aligarh, India.,Baba Gulam Shah Badshah University, Rajouri, J&K, India
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Combined cation-exchange and solid phase extraction for the selective separation and preconcentration of zinc, copper, cadmium, mercury and cobalt among others using azo-dye functionalized resin. J Chromatogr A 2016; 1440:1-14. [DOI: 10.1016/j.chroma.2016.02.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/05/2016] [Accepted: 02/08/2016] [Indexed: 11/20/2022]
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Kooh MRR, Lim LBL, Lim LH, Dahri MK. Separation of toxic rhodamine B from aqueous solution using an efficient low-cost material, Azolla pinnata, by adsorption method. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:108. [PMID: 26797814 DOI: 10.1007/s10661-016-5108-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 01/12/2016] [Indexed: 06/05/2023]
Abstract
This study investigated the potential of untreated Azolla pinnata (AP) to remove toxic rhodamine B (RB) dye. The effects of adsorbent dosage, pH, ionic strength, contact time, and concentration were studied. Experiments involving the effects of pH and ionic strength indicated that hydrophobic-hydrophobic interactions might be the dominant force of attraction for the RB-AP adsorption system. The kinetics modelling of the kinetics experiment showed that pseudo-second-order best represented the adsorption process. The Weber-Morris intraparticle diffusion model showed that intraparticle diffusion is not the rate-limiting step, while the Boyd model suggested that film diffusion might be rate-limiting. The adsorption isotherm model, Langmuir, best represented the adsorption process, and the maximum adsorption capacity was predicted to be 72.2 and 199.7 mg g(-1) at 25 and 65 °C, respectively. Thermodynamics study indicates spontaneity, endothermic and physisorption-dominant adsorption process. The adsorbents were regenerated to satisfactory level with distilled water, HNO3 and NaOH. Pre-treatment of adsorbent with oxalic acid, citric acid, NaOH, HCl and phosphoric acid was investigated but the adsorption capacity was less than the untreated AP.
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Affiliation(s)
- Muhammad Raziq Rahimi Kooh
- Chemical Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Pengkalan Gadong, Bandar Seri Begawan, 1410, Brunei Darussalam.
| | - Linda B L Lim
- Chemical Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Pengkalan Gadong, Bandar Seri Begawan, 1410, Brunei Darussalam.
| | - Lee Hoon Lim
- Chemical Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Pengkalan Gadong, Bandar Seri Begawan, 1410, Brunei Darussalam.
| | - Muhammad Khairud Dahri
- Chemical Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Pengkalan Gadong, Bandar Seri Begawan, 1410, Brunei Darussalam.
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Dahri MK, Chieng HI, Lim LB, Priyantha N, Mei CC. Cempedak Durian (Artocarpus sp.) Peel as a Biosorbent for the Removal of Toxic Methyl Violet 2B from Aqueous Solution. KOREAN CHEMICAL ENGINEERING RESEARCH 2015. [DOI: 10.9713/kcer.2015.53.5.576] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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He J, Lin R, Long H, Liang Y, Chen Y. Adsorption characteristics of amino acids on to calcium oxalate. J Colloid Interface Sci 2015; 454:144-51. [DOI: 10.1016/j.jcis.2015.02.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 02/03/2015] [Accepted: 02/05/2015] [Indexed: 10/24/2022]
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22
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Dahri MK, Lim LBL, Mei CC. Cempedak durian as a potential biosorbent for the removal of Brilliant Green dye from aqueous solution: equilibrium, thermodynamics and kinetics studies. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:546. [PMID: 26231977 DOI: 10.1007/s10661-015-4768-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 07/20/2015] [Indexed: 06/04/2023]
Abstract
Cempedak durian peel (CDP) was used to remove Brilliant Green (BG) dye from aqueous solution. The adsorption of BG onto CDP was studied as functions of contact time, pH, temperature, ionic strength and initial concentration. In order to understand the adsorption process and its mechanisms, adsorption isotherm and kinetics models were used. The experiments were done under optimized 2-h contact time and ambient pH. Adsorption study showed that the Langmuir model best fitted with experimental data, and the maximum adsorption capacity was determined as 0.203 mmol g(-1) (97.995 mg g(-1)). Adsorption kinetics followed the pseudo 2nd order model, and intraparticle diffusion is involved but not as the rate-limiting step while Boyd model suggests that film diffusion might be in control of the adsorption process. Fourier transform infrared (FTIR) analysis showed that OH, C=O, C=C and NH functional groups might be involved in the adsorption of BG onto CDP. Thermodynamic study suggested that the adsorption of BG onto CDP is endothermic with ΔH (o) value of 12 kJ mol(-1) and adsorption is feasible. Regeneration of CDP's ability to remove BG was also studied using three different washing solutions. NaOH (0.1 M) was not only sufficient to be used to regenerate CDP's ability to remove BG but also improved its adsorption capability.
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Affiliation(s)
- Muhammad Khairud Dahri
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei Darussalam,
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Prasad AL, Santhi T, Manonmani S. Recent developments in preparation of activated carbons by microwave: Study of residual errors. ARAB J CHEM 2015. [DOI: 10.1016/j.arabjc.2011.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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24
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He J, Lin R, Li H, Long H, Xuan J, He C, Lan Y. Adsorption of EDTA onto calcium oxalate monohydrate. RSC Adv 2015. [DOI: 10.1039/c5ra16498b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effects of contact time (A) and temperature (B) for the adsorption of EDTA onto CaOx monohydrate crystals.
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Affiliation(s)
- Junbin He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Rihui Lin
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning
- PR China
| | - He Li
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Han Long
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Jincai Xuan
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Chaohong He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Yurong Lan
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
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25
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Mandal B, Mondal M, Srivastava B, Barman MK, Ghosh C, Chatterjee M. Chromatographic method for pre-concentration and separation of Zn(ii) with microalgae and density functional optimization of the extracted species. RSC Adv 2015. [DOI: 10.1039/c5ra01867f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Exploiting weak complexation (polysaccharides·[Zn(H2O)(OH)]+) at the algal surface, Zn(ii) in real samples is quantitatively retrieved using 0.005 M HNO3, a selective eluent.
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Affiliation(s)
| | | | | | - Milan K. Barman
- Analytical Laboratory
- Department of Chemistry
- Visva-Bharati
- India
| | - Chandan Ghosh
- Analytical Laboratory
- Department of Chemistry
- Visva-Bharati
- India
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26
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Efficacy of physically pretreated Mangifera indica biomass for Cu2+ and Zn2+ sequestration. JOURNAL OF SAUDI CHEMICAL SOCIETY 2015. [DOI: 10.1016/j.jscs.2011.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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28
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Biosorption of reactive dye from aqueous media using Saccharomyces cerevisiae biomass. Equilibrium and kinetic study. OPEN CHEM 2013. [DOI: 10.2478/s11532-013-0338-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AbstractThe biosorption Brilliant Red HE-3B reactive dye by nonliving biomass, Saccharomyces cerevisiae, in batch procedure was investigated. Equilibrium experimental data were analyzed using Freundlich, Langmuir and Dubinin — Radushkevich isotherm models and obtained capacity about 104.167 mg g−1 at 20°C. The batch biosorption process followed the pseudo-second order kinetic model. The multi-linearity of the Weber-Morris plot suggests the presence of two main steps influencing the biosorption process: the intraparticle diffusion (pore diffusion), and the external mass transfer (film diffusion). The results obtained in batch experiments revealed that the biosorption of reactive dye by biomass is an endothermic physical-chemical process occurring mainly by electrostatic interaction between the positive charged surface of the biomass and the anionic dye molecules. The biosorption mechanism was confirmed by FT-IR spectroscopy and microscopy analysis
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29
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Removal of Methyl Violet 2B from Aqueous Solution Using Casuarina equisetifolia Needle. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/619819] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
One of the major contaminants of water bodies is dye pollutants that come from textile, paper, and leather industries. In this study, Casuarina equisetifolia needle (CEN) is used to remove methyl violet 2B (MV) from aqueous solutions. Batch experiments were done to investigate the contact time, effect of pH, initial dye concentrations, and temperature. Langmuir and Freundlich isotherm models were used to describe the interaction between the adsorbate and adsorbent. The sorption mechanism was described using Lagergren 1st order, pseudo 2nd order, and Weber-Morris intraparticle diffusion models. FTIR spectroscopy was used to analyze the functional groups of CEN before and after sorption with MV. Optimal conditions were found to be at room temperature with 2 h contact time and no pH adjustment was needed. Experimental data was best fitted onto Langmuir model with maximum adsorption capacity of 164.99 mg/g, while pseudo 2nd order best described the experimental data for the kinetics study. Thermodynamic parameters such as change in Gibbs free energy (), enthalpy (), and entropy () were also investigated.
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30
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Suteu D, Bilba D, Coseri S. Macroporous polymeric ion exchangers as adsorbents for the removal of cationic dye basic blue 9 from aqueous solutions. J Appl Polym Sci 2013. [DOI: 10.1002/app.39620] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daniela Suteu
- Faculty of Chemical Engineering and Environmental Protection; Gheorghe Asachi Technical University of Iasi; 71A Professor Doctor Docent D. Mangeron Boulevard Iasi 700050 Romania
| | - Doina Bilba
- Faculty of Chemical Engineering and Environmental Protection; Gheorghe Asachi Technical University of Iasi; 71A Professor Doctor Docent D. Mangeron Boulevard Iasi 700050 Romania
| | - Sergiu Coseri
- P. Poni Institute of Macromolecular Chemistry of Iasi; 41A Grigore Ghica Voda Alley 700487 Iasi Romania
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31
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Ramkumar J, Chandramouleeswaran S, Naidu BS, Sudarsan V. Antimony phosphate nanoribbons: sorbents for uptake of uranyl ion. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-013-2614-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Galamboš M, Krajňák A, Rosskopfová O, Viglašová E, Adamcová R, Rajec P. Adsorption equilibrium and kinetic studies of strontium on Mg-bentonite, Fe-bentonite and illite/smectite. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-013-2511-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Mukherjee J, Ramkumar J, Chandramouleeswaran S, Shukla R, Tyagi AK. Sorption characteristics of nano manganese oxide: efficient sorbent for removal of metal ions from aqueous streams. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-012-2393-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Hashem A, Adam E, Hussein HA, Sanousy MA, Ayoub A. Bioadsorption of Cd (II) from Contaminated Water on Treated Sawdust: Adsorption Mechanism and Optimization. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jwarp.2013.51010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Evaluation of the Use ofAcacia niloticaLeaf as an Ecofriendly Adsorbent for Cr (VI) and Its Suitability in Real Waste Water: Study of Residual Errors. J CHEM-NY 2013. [DOI: 10.1155/2013/354328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The present paper aims to investigate the physical characteristics ofAcacia niloticaleaves (MVM) relative to their use as an adsorbent for removal of hazardous Cr (VI) from waste water. The adsorbent was characterized by FTIR and SEM studies. The applicability of the Langmuir model to MVM was proved by the high coefficient of determination. Eight error analysis methods, namely, residual root mean square error (RMSE), chi-square (χ2), sum of the square of the errors (ERRSQ), composite functional error (HYBRD), derivative of Marquardt's percent standard deviation (MPSD), average relative error (ARE), sum of absolute error (EABS), and average percentage error (APE) were used to evaluate the suitability of the adsorption isotherm. Desorption reveals that recovery of the metal from adsorbent was possible. The ecofriendly adsorbent MVM is expected to be an environmentally and economically feasible adsorbent for the removal of Cr (VI) from aqueous solution and real waste water.
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36
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Hashem A, Al-Kheraije KA. Chemically Modified <i>Cornulaca monacantha</i>Biomass for Bioadsorption of Hg (II) from Contaminated Water: Adsorption Mechanism. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jep.2013.43033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Equilibrium, kinetic, and thermodynamic studies of Basic Blue 9 dye sorption on agro-industrial lignocellulosic materials. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0122-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe sorptive potential of some lignocellulosic agro-industrial wastes (sunflower seed shells and corn cob) for Basic Blue 9 cationic dye removal from aqueous solutions was examined using the batch technique. The Freundlich, Langmuir, and Dubinin-Radushkevich isotherm models were used in order to determine the quantitative parameters of sorption. The Langmuir isotherm model indicated a maximum sorption capacity for these materials in the range of 40–50 mg dye per g (25°C), slightly higher for corn cob than for sunflower seed shells. The values of the thermodynamic parameters showed that the retention of cationic dye is a spontaneous and endothermic process. The application of pseudo-first order and pseudo-second order intraparticle diffusion models, and a Boyd — Reichenberg model for kinetic data interpretation suggested that sorption of Basic Blue 9 dye onto the studied materials is a process where both surface sorption and intraparticle diffusion contributed to the rate-limiting step. These lignocellulosic wastes can be used with good efficiency for dye removal from aqueous effluents.
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38
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Kinetics and equilibrium studies on removal of zinc(II) by untreated and anionic surfactant treated dead biomass of yeast: Batch and column mode. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Galamboš M, Osacký M, Rosskopfová O, Krajňák A, Rajec P. Comparative study of strontium adsorption on dioctahedral and trioctahedral smectites. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1752-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Das D, Das N, Mathew L. Kinetics, equilibrium and thermodynamic studies on biosorption of Ag(I) from aqueous solution by macrofungus Pleurotus platypus. JOURNAL OF HAZARDOUS MATERIALS 2010; 184:765-774. [PMID: 20869166 DOI: 10.1016/j.jhazmat.2010.08.105] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/19/2010] [Accepted: 08/25/2010] [Indexed: 05/29/2023]
Abstract
Reports are available on silver binding capacity of some microorganisms. However, reports on the equilibrium studies on biosorption of silver by macrofungi are seldom known. The present study was carried out in a batch system using dead biomass of macrofungus Pleurotus platypus for the sorption of Ag(I). P. platypus exhibited the highest silver uptake of 46.7 mg g(-1) of biomass at pH 6.0 in the presence of 200 mg L(-1) Ag(I) at 20°C. Kinetic studies based on fractional power, zero order, first order, pseudo-first order, Elovich, second order and pseudo-second order rate expressions have been carried out. The results showed a very good compliance with the pseudo-first order model. The experimental data were analyzed using two parameter isotherms (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin and Halsey), three parameter isotherms (Redlich-Peterson, Sips, Khan, Koble-Corrigan, Hill, Toth, Radke-Prausmitz, Jossens, Langmuir-Freundlich), four parameter isotherms (Weber-van Vliet, Fritz-Schlunder, Baudu) and five parameter isotherm (Fritz-Schlunder). Thermodynamic parameters of the biosorption (ΔG, ΔH and ΔS) were also determined. The present study confirmed that macrofungus P. platypus may be used as a cost effective efficient biosorbent for the removal of Ag(I) ions from aqueous solution.
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Affiliation(s)
- Devlina Das
- School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu, India
| | - Nilanjana Das
- School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu, India.
| | - Lazar Mathew
- School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu, India
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41
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Chang Chien SW, Chen CY, Chang JH, Chen SH, Wang MC, Mannepalli MR. Sorption of toluene by humic acids derived from lake sediment and mountain soil at different pH. JOURNAL OF HAZARDOUS MATERIALS 2010; 177:1068-1076. [PMID: 20106594 DOI: 10.1016/j.jhazmat.2010.01.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 12/17/2009] [Accepted: 01/06/2010] [Indexed: 05/28/2023]
Abstract
Contamination of soil and groundwater with BTEX compounds (benzene, toluene, ethylbenzene, and xylene) depends on the sorption behavior of these compounds by soil organic matter (SOM) and humic acids (HAs). In this study sorption of toluene by HAs extracted from lake sediment and mountain soil was investigated. HA suspensions were adjusted to pH 4.00, 6.00, or 8.00 and made to the concentration of 200 mg L(-1). Each HA suspension or solution was subjected to particle size analysis using high performance particle sizer (HPPS). The particle size of HA from lake sediment was around 1000-1200 nm while that from mountain soil was 220-320 nm at suspension pH 4.00. Kinetic studies showed that sorption of toluene by the two HAs followed pseudo-first-order and mainly pseudo-zero-order kinetics. At suspension pH 4.00, the sorption of toluene by the two HAs was best described by Langmuir and Temkin adsorption isotherm models. Further, sorption of toluene by the lake sediment HA was significantly greater than that by mountain soil HA. It was thus suggested that the lake sediment HA with larger particle size may develop beneficially chemical conformation for sorption of toluene and related compounds in soil and associated environments.
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Affiliation(s)
- S W Chang Chien
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Wufong Township 41349, Taichung County, Taiwan, ROC
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43
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Mortaheb HR, Mafi M, Zolfaghari A, Mokhtarani B, Khodapanah N, Ghaemmaghami F. Absorption of ethylene from ethylene-ethane gaseous mixture by AgNO3solution in a semi-continuous process. CAN J CHEM ENG 2009. [DOI: 10.1002/cjce.20239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Hasan SH, Srivastava P. Batch and continuous biosorption of Cu(2+) by immobilized biomass of Arthrobacter sp. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2009; 90:3313-21. [PMID: 19487070 DOI: 10.1016/j.jenvman.2009.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Revised: 03/30/2009] [Accepted: 05/03/2009] [Indexed: 05/17/2023]
Abstract
The ability of free and polysulphone immobilized biomass of Arthrobacter sp. to remove Cu(2+) ions from aqueous solution was studied in batch and continuous systems. The Langmuir and Freundlich isotherm models were applied to the data. The Langmuir isotherm model was found to fit the sorption data indicating that sorption was monolayer and uptake capacity (Q(o)) was 175.87 and 158.7mg/g for free and immobilized biomass respectively at pH 5.0 and 30 degrees C temperature, which was also confirmed by a high correlation coefficient, a low RMSE and a low Chi-square value. A kinetic study was carried out with pseudo-first-order reaction and pseudo-second-order reaction equations and it was found that the Cu(2+) uptake process followed the pseudo-second-order rate expression. The diffusivity of Cu(2+) on immobilized beads increased (0.402x10(-4) to 0.435x10(-4)cm(2)/s) with increasing concentration from 50 to 150mg/L. The maximum percentage Cu(2+) removal (89.56%) and uptake (32.64mg/g) were found at 3.5mL/min and 20cm bed height. In addition to this the Bed Depth Service Time (BDST) model was in good agreement with the experimental data with a high correlation coefficient (>0.995). Furthermore, sorption and desorption studies were also carried out which showed that polysulphone immobilized biomass could be reused for up to six sorption-desorption cycles.
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Affiliation(s)
- Syed Hadi Hasan
- Water Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi, U.P. 221005, India
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45
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Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption kinetic models for the removal of methylene blue by activated carbon. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11783-009-0030-7] [Citation(s) in RCA: 210] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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47
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El-Khaiary MI. Least-squares regression of adsorption equilibrium data: comparing the options. JOURNAL OF HAZARDOUS MATERIALS 2008; 158:73-87. [PMID: 18294764 DOI: 10.1016/j.jhazmat.2008.01.052] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Revised: 01/11/2008] [Accepted: 01/11/2008] [Indexed: 05/25/2023]
Abstract
Experimental and simulated adsorption equilibrium data were analyzed by different methods of least-squares regression. The methods used were linear regression, nonlinear regression, and orthogonal distance regression. The results of the regression analysis of the experimental data showed that the different regression methods produced different estimates of the adsorption isotherm parameters, and consequently, different conclusions about the surface properties of the adsorbent and the mechanism of adsorption. A Langmuir-type simulated data set was calculated and several levels of random error were added to the data set. The results of regression analysis of the simulated data set showed that orthogonal distance regression gives the most accurate and efficient estimates of the isotherm parameters. Nonlinear regression and one form of the linearized Langmuir isotherm also gave accurate estimates, but only at low levels of random error.
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Affiliation(s)
- Mohammad I El-Khaiary
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, El-Hadara, Alexandria, Egypt.
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48
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Bolster CH. Revisiting a statistical shortcoming when fitting the Langmuir model to sorption data. JOURNAL OF ENVIRONMENTAL QUALITY 2008; 37:1986-1992. [PMID: 18689760 DOI: 10.2134/jeq2007.0461] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The Langmuir model is commonly used for describing the sorption behavior of reactive solutes to surfaces and is often fit to sorption data using nonlinear least squares regression. An important assumption of least squares regression is that the predictor variable is error free. In the case of sorption data, this assumption is not valid, and therefore the potential for parameter bias exists. Although alternative regression methods exist that either explicitly account for error in the predictor variable (Model II regression) or minimize the error in the predictor variable, these methods are not commonly used. Therefore, this paper more fully explores the differences in fitted parameters and model fits between these different data fitting methods by fitting P sorption data collected on 26 different soil samples using three different regression methods. For a majority of soils tested in this study, the differences in model fits between the three regression methods were not statistically significant. Statistical differences were observed in over a third of the soils, however, suggesting that errors in the predictor variable may be large enough to produce biased parameter estimates. These results suggest that multiple regression methods should be used when fitting the Langmuir model to sorption data to better assess the potential impact of error on model fits.
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Affiliation(s)
- Carl H Bolster
- U.S. Department of Agriculture-Agricultural Research Service, 230 Bennett Ln., Bowling Green, KY 42104, USA.
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49
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Guerra DL, Airoldi C. Anchored thiol smectite clay—kinetic and thermodynamic studies of divalent copper and cobalt adsorption. J SOLID STATE CHEM 2008. [DOI: 10.1016/j.jssc.2008.06.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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50
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Hayes PL, Malin JN, Konek CT, Geiger FM. Interaction of Nitrate, Barium, Strontium and Cadmium Ions with Fused Quartz/Water Interfaces Studied by Second Harmonic Generation. J Phys Chem A 2008; 112:660-8. [DOI: 10.1021/jp076976g] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Patrick L. Hayes
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Jessica N. Malin
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Christopher T. Konek
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Franz M. Geiger
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
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