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Rabeie B, Mahmoodi NM. Green and environmentally friendly architecture of starch-based ternary magnetic biocomposite (Starch/MIL100/CoFe 2O 4): Synthesis and photocatalytic degradation of tetracycline and dye. Int J Biol Macromol 2024; 274:133318. [PMID: 38917917 DOI: 10.1016/j.ijbiomac.2024.133318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/13/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024]
Abstract
The presence of tetracycline and dye as organic contaminants has led to the poisoning of wastewater. The aim of this study is to synthesize a novel biocomposite material by decorating natural starch polymer granules with metal-organic framework (MIL100) and cobalt ferrite magnetic (CoFe2O4) nanoparticles. The synthesized ternary magnetic biocomposite (Starch/MIL100/CoFe2O4) was used for the photocatalytic degradation of methylene blue (MB) and tetracycline (TCN) using LED visible light. The synthesis of the biocomposite was confirmed through comprehensive analyses (XRD, SEM, FTIR, BET, EDX, MAP, DRS, pHzpc, TGA, and Raman). The evaluation examined the influence of initial pollutant concentration, catalyst dosage, pH, and the impact of anions on pollutant removal. The results show that the pollutant degradation ability of biocomposite has been significantly improved, so that the base biopolymer, starch, achieved 18% tetracycline degradation, but when decorated with MIL100 and cobalt ferrite, it increased to 91.2%. It was observed that the degradation for methylene blue improved from 12% for starch to 96.6% for the magnetic biocomposite. The tetracycline degradation decreased by more than 20% in the presence of NaCl, NaNO3, and Na2SO4. The finding shows that the biocomposite adheres to first-order kinetics for both pollutants. The scavengers test identified hydroxyl radicals as the most effective active species in the degradation process. High stability, even after passing 5 cycles of recycling was observed for the biocomposite. The results indicated that the facile and green synthesized Starch/MIL100/CoFe2O4 magnetic biocomposite could be used as an effective photocatalyst for the degradation of Tetracycline and dye at room temperature.
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Affiliation(s)
- Bahareh Rabeie
- Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
| | - Niyaz Mohammad Mahmoodi
- Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
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Monir M, Elsayed RE, Azzam RA, Madkour TM. Novel High-Performance Functionalized and Grafted Bio-Based Chitosan Adsorbents for the Efficient and Selective Removal of Toxic Heavy Metals from Contaminated Water. Polymers (Basel) 2024; 16:1718. [PMID: 38932067 DOI: 10.3390/polym16121718] [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: 05/17/2024] [Revised: 06/05/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Novel functionalized and/or grafted crosslinked chitosan adsorbents were synthesized and used to remove several toxic heavy metal ions such as nickel, lead, chromium, and cadmium ions from contaminated water. The chitosan biopolymer was functionalized by maleic anhydride (CS_MA) acting also as a crosslinking agent. Glutaraldehyde-crosslinked chitosan (CS_GA) grafted with poly(methyl methacrylate) (CS_MMA) was also synthesized. The synthesized adsorbents were characterized using a variety of analytical techniques such as SEM, TGA, and FTIR, which confirmed their chemical structures and morphology. The adsorption capacity of the adsorbents was analyzed under various conditions of contact time, adsorbent dose, initial concertation, temperature, and pH and evaluated against those of pure chitosan (CS) and the crosslinked chitosan(CS_GA). The ultimate removal conditions were 0.5 g/100 mL adsorbent dose, an initial metal ion concentration of 50 ppm, a temperature of 45 °C, and pH 9. CS_MMA had the highest removal percentages for all metal ions, ranging from 92% to 94%. The adsorption was demonstrated to fit a pseudo-first-order model that followed a Langmuir adsorption isotherm. The results highlight the capacity of the synthesized polymers to efficiently remove major toxic contaminants at low cost from contaminated water, present especially in low-income areas, without harming the environment.
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Affiliation(s)
- Mohammad Monir
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, New Cairo, Cairo 11835, Egypt
| | - Rasha E Elsayed
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, New Cairo, Cairo 11835, Egypt
| | - Rasha A Azzam
- Department of Chemistry, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Tarek M Madkour
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, New Cairo, Cairo 11835, Egypt
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Chinnaswamy V, Mohan SG, Ramsamy KM, Tm S. Photocatalytic activity of ZnO doped Nano hydroxyapatite/GO derived from waste oyster shells for removal of Methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33894-7. [PMID: 38858286 DOI: 10.1007/s11356-024-33894-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 05/30/2024] [Indexed: 06/12/2024]
Abstract
Hydroxyapatite (HAp) stands as an inorganic compound, recognized as a non-toxic, bioactive ceramic, and its composition closely resembles that of bone material. In this study, nHAp was prepared from waste oyster shells, which are biowaste rich in calcium carbonate. nHAp with its unique catalytic property can be used as an adsorbent in various fields, including wastewater treatment. nHAp with an exceptional surface adsorbent with excellent chemical stability, enabling its catalytic function. Nano hydroxyapatite doped with Zinc oxide (ZnO) by wet chemical precipitation and made into a composite with Graphene oxide (GO) by modified hummers method followed by grinding, which was taken as 9:1 ratio (nHAp/ZnO and GO) of weight, enhances its tensile and mechanical strength. The energy band gap of nHAp photocatalyst was evaluated as 3.39 eV and that of the in nHAp/ZnO/GO photocatalyst was narrowed to 1.77 eV. The ternary nanocomposites are very efficient in generating the photogenerated electrons and holes, thereby improving the degradation potential of dye effluents to by-products such as CO2 and H2O. The nanocomposites photocatalyst were characterized by FTIR, XRD, SEM, TEM, EDS, XPS, DRS, and BET techniques. The UV-visible study shows the complete dye degradation efficiency of the prepared nanocomposites photocatalyst. In this study, the prepared nanocomposites nHAp/ZnO/GO have studied their efficiency for the removal of MB dye in a batch process by varying the dosage from 0.1 to 0.5 g, and the effects of dosage variations, pH, kinetic, scavenger study were evaluated at a time interval of 30 min. The removal of dye was found to be 99% at 150 min of 0.3 g dosage and pH = 12 is most favorable as it reached the same percentage at 90 min. The as-prepared nanocomposite nHAp/ZnO/GO fits the kinetic rate constant equation and shows a pseudo-first-order reaction model. This study indicates the suitability for dye removal due to the synergistic effect and electrostatic interaction of the synthesized ternary nanocomposite, which shows the potential, socially active, low-cost-effective, eco-friendly, and safe for photocatalytic degradation of MB from wastewater.
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Affiliation(s)
- Vanitha Chinnaswamy
- PG and Research Department of Chemistry, R.V. Govt. Arts College, Chengalpattu, 603 001, Tamil Nadu, India
| | - Sundara Ganeasan Mohan
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India
| | - Kuppusamy Muniyan Ramsamy
- PG and Research Department of Chemistry, R.V. Govt. Arts College, Chengalpattu, 603 001, Tamil Nadu, India
| | - Sridhar Tm
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India.
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Mishra A, Pandey J, Ojha H, Sharma M, Kaur L, Pandey A, Sharma P, Murab S, Singhal R, Pathak M. A green and economic approach to synthesize magnetic Lagenaria siceraria biochar (γ-Fe 2O 3-LSB) for methylene blue removal from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34038-34055. [PMID: 38696013 DOI: 10.1007/s11356-024-33477-6] [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: 01/30/2024] [Accepted: 04/23/2024] [Indexed: 05/31/2024]
Abstract
In the printing and textile industries, methylene blue (a cationic azo dye) is commonly used. MB is a well-known carcinogen, and another major issue is its high content in industrial discharge. There are numerous removal methodologies that have been employed to remove it from industrial discharge; however, these current modalities have one or more limitations. In this research, a novel magnetized biochar (γ-Fe2O3-LSB) was synthesized using Lagenaria siceraria peels which were further magnetized via the co-precipitation method. The synthesized γ-Fe2O3-LSB was characterized using FTIR, X-ray diffraction, Raman, SEM-EDX, BET, and vibrating sample magnetometry (VSM) for the analysis of magnetic properties. γ-Fe2O3-LSB showed a reversible type IV isotherm, which is a primary characteristic of mesoporous materials. γ-Fe2O3-LSB had a specific surface area (SBET = 135.30 m2/g) which is greater than that of LSB (SBET = 11.54 m2/g). γ-Fe2O3-LSB exhibits a saturation magnetization value (Ms) of 3.72 emu/g which shows its superparamagnetic nature. The batch adsorption process was performed to analyze the adsorptive removal of MB dye using γ-Fe2O3-LSB. The adsorption efficiency of γ-Fe2O3-LSB for MB was analyzed by varying parameters like the initial concentration of adsorbate (MB), γ-Fe2O3-LSB dose, pH effect, contact time, and temperature. Adsorption isotherm, kinetic, and thermodynamics were also studied after optimizing the protocol. The non-linear Langmuir model fitted the best to explain the adsorption isotherm mechanism and resulting adsorption capacity ( q e =54.55 mg/g). The thermodynamics study showed the spontaneous and endothermic nature, and pseudo-second-order rate kinetics was followed during the adsorption process. Regeneration study showed that γ-Fe2O3-LSB can be used up to four cycles. In laboratory setup, the cost of γ-Fe2O3-LSB synthesis comes out to be 162.75 INR/kg which is low as compared to commercially available adsorbents. The results obtained suggest that magnetic Lagenaria siceraria biochar, which is economical and efficient, can be used as a potential biochar material for industrial applications in the treatment of wastewater.
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Affiliation(s)
- Ayushi Mishra
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, Uttar Pradesh, India
| | - Jyoti Pandey
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, Uttar Pradesh, India
| | - Himanshu Ojha
- Division of Radiological, Nuclear and Imaging Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S K Mazumdar Road, Timarpur, Delhi, 110054, India
| | - Malti Sharma
- Department of Chemistry, Miranda House, University of Delhi, Delhi, 110007, India
| | - Lajpreet Kaur
- Division of Radiological, Nuclear and Imaging Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S K Mazumdar Road, Timarpur, Delhi, 110054, India
| | - Akhilesh Pandey
- Solid State Physics Laboratory, DRDO, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Pankaj Sharma
- BioX Center, School of Biosciences & Bioengineering, IIT Mandi, Kamand, Himachal Pradesh, 175075, India
| | - Sumit Murab
- BioX Center, School of Biosciences & Bioengineering, IIT Mandi, Kamand, Himachal Pradesh, 175075, India
| | - Rahul Singhal
- Department of Chemistry, Shivaji College, University of Delhi, Delhi, 110027, India
| | - Mallika Pathak
- Department of Chemistry, Miranda House, University of Delhi, Delhi, 110007, India.
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Kim SY, Kim IY, Park SH, Hwangbo M, Hwangbo S. Novel ultrasonic technology for advanced oxidation processes of water treatment. RSC Adv 2024; 14:11939-11948. [PMID: 38623292 PMCID: PMC11017266 DOI: 10.1039/d4ra01665c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/03/2024] [Indexed: 04/17/2024] Open
Abstract
Textile wastewater accounts for a significant proportion of industrial wastewater worldwide. In particular, dye wastewater accounts for a large proportion and consists of non-degradable dyes, which are substances resistant to biodegradation. Methylene blue is a representative example of such non-degradable dyes. It is not biologically degraded and exhibits toxicity. Various methods for their decomposition are currently being studied. Advanced oxidation processes (AOPs), which generate highly reactive hydroxyl radicals that oxidize and degrade pollutants, have been actively studied. Particularly, the photocatalytic degradation method using TiO2 nanoparticles is one of the most actively studied fields; however, there are still concerns regarding the toxicity of nanoparticles. Research is currently being conducted on AOPs using the cavitation phenomenon of ultrasonic waves. However, achieving high efficiency using existing ultrasonic equipment is difficult. Therefore, in this study, we evaluated a new water treatment technology through AOPs using a focused ultrasonic system with a cylindrical piezoelectric ceramic structure. After determining the optimal conditions for degradation, the degradation process was evaluated as a useful tool for mitigating the toxicity of methylene blue. We found that, under the optimal conditions of 100 W intensity at a frequency of 400 kHz, this system is a helpful instrument for degradation and a new water treatment technology suitable for removing ecotoxicity and genotoxicity.
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Affiliation(s)
- So Yul Kim
- R&D Center, Focused Ultra-Sonic Tech. Lab. (FUST Lab) 1 Techno-ro Yuseong-gu Daejeon 34015 Republic of Korea
| | - In Young Kim
- Nano-safety Team, Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS) 267 Gajeong-ro Yuseong-gu Daejeon 34113 Republic of Korea
| | - Seong-Hoon Park
- Genetic and Epigenetic Toxicology Research Group, Korea Institute of Toxicology 141 Gajeong-ro Yuseong-gu Daejeon 34114 Republic of Korea
| | - Minsung Hwangbo
- R&D Center, Focused Ultra-Sonic Tech. Lab. (FUST Lab) 1 Techno-ro Yuseong-gu Daejeon 34015 Republic of Korea
| | - Seonae Hwangbo
- R&D Center, Focused Ultra-Sonic Tech. Lab. (FUST Lab) 1 Techno-ro Yuseong-gu Daejeon 34015 Republic of Korea
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Oluwasina OO, Adelodun AA, Oluwasina OO, Duarte HA, Olusegun SJ. Experimental and computational studies of crystal violet removal from aqueous solution using sulfonated graphene oxide. Sci Rep 2024; 14:6207. [PMID: 38485952 PMCID: PMC10940666 DOI: 10.1038/s41598-024-54499-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/13/2024] [Indexed: 03/18/2024] Open
Abstract
Positively charged contaminants can be strongly attracted by sulfanilic acid-functionalized graphene oxide. Here, sulfonated graphene oxide (GO-SO3H) was synthesized and characterized for cationic crystal violet (CV) adsorption. We further studied the effect of pH, initial concentration, and temperature on CV uptake. The highest CV uptake occurred at pH 8. A kinetic study was also carried out by applying the pseudo-first-order and pseudo-second-order models. The pseudo-second-order's adsorption capacity (qe) value was much closer to the experimental qe (qeexp:0.13, qecal:0.12) than the pseudo-first-order model (qeexp:0.13, qecal:0.05). The adsorption performance was accomplished rapidly since the adsorption equilibrium was closely obtained within 30 min. Furthermore, the adsorption capacity was significantly increased from 42.85 to 79.23%. The maximum adsorption capacities of GO-SO3H where 97.65, 202.5, and 196.2 mg·g-1 for CV removal at 298, 308, and 328 K, respectively. The Langmuir and Freundlich adsorption isotherms were applied to the experimental data. The data fit well into Langmuir and Freundlich except at 298 K, where only Langmuir isotherm was most suitable. Thermodynamic studies established that the adsorption was spontaneous and endothermic. The adsorption mechanism was revealed by combining experimental and computational methods. These findings suggest that GO-SO3H is a highly adsorbent for removing harmful cationic dye from aqueous media.
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Affiliation(s)
- Olayinka Oluwaseun Oluwasina
- Department of Marine Science and Technology, The Federal University of Technology, P.M.B. 704, Akure, 340110, Nigeria.
| | - Adedeji Adebukola Adelodun
- Department of Marine Science and Technology, The Federal University of Technology, P.M.B. 704, Akure, 340110, Nigeria
- Department of Chemistry, University of Copenhagen, Universitet sparken 5, 2100, Copenhagen Ø, Denmark
| | | | - Helio A Duarte
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Sunday Joseph Olusegun
- Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice, Poland
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI, 48824-1322, USA
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Thirumurugan S, Dash P, Lin YC, Sakthivel R, Sun YS, Lin CP, Wang AN, Liu X, Dhawan U, Tung CW, Chung RJ. Synergistic effect of photothermal and magnetic hyperthermia for in situ activation of Fenton reaction in tumor microenvironment for chemodynamic therapy. BIOMATERIALS ADVANCES 2024; 157:213724. [PMID: 38134729 DOI: 10.1016/j.bioadv.2023.213724] [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: 08/31/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023]
Abstract
Traditional cancer treatments are ineffective and cause severe adverse effects. Thus, the development of chemodynamic therapy (CDT) has the potential for in situ catalysis of endogenous molecules into highly toxic species, which would then effectively destroy cancer cells. However, the shortage of high-performance nanomaterials hinders the broad clinical application of this approach. In present study, an effective therapeutic platform was developed using a simple hydrothermal method for the in-situ activation of the Fenton reaction within the tumor microenvironment (TME) to generate substantial quantities of •OH and ultimately destroy cancer cells, which could be further synergistically increased by photothermal therapy (PHT) and magnetic hyperthermia (MHT) aided by FeMoO4 nanorods (NRs). The produced FeMoO4 NRs were used as MHT/PHT and Fenton catalysts. The photothermal conversion efficiency of the FeMoO4 NRs was 31.75 %. In vitro and \ experiments demonstrated that the synergistic combination of MHT/PHT/CDT notably improved anticancer efficacy. This work reveals the significant efficacy of CDT aided by both photothermal and magnetic hyperthermia and offers a feasible strategy for the use of iron-based nanoparticles in the field of biomedical applications.
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Affiliation(s)
- Senthilkumar Thirumurugan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan
| | - Pranjyan Dash
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan
| | - Yu-Chien Lin
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan
| | - Rajalakshmi Sakthivel
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan
| | - Ying-Sui Sun
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Ching-Po Lin
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | | | - Xinke Liu
- College of Materials Science and Engineering, Chinese Engineering and Research Institute of Microelectronics, Shenzhen University, Shenzhen 518060, China; Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Udesh Dhawan
- Centre for the Cellular Microenvironment, Division of Biomedical Engineering, James Watt School of Engineering, Mazumdar-Shaw Advanced Research Centre, University of Glasgow, Glasgow, G116EW, UK
| | - Ching-Wei Tung
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan.
| | - Ren-Jei Chung
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan; High-value Biomaterials Research and Commercialization Center, National Taipei University of Technology (Taipei Tech), Taipei 106344, Taiwan.
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Panda A, Samal PP, Qaiyum MA, Dey B, Dey S. Think before throw: waste chili stalk powder for facile scavenging of cationic dyes from water. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:118. [PMID: 38183504 DOI: 10.1007/s10661-023-12243-0] [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: 09/11/2023] [Accepted: 12/14/2023] [Indexed: 01/08/2024]
Abstract
Chili stalk powder (CS), a non-conventional adsorbent, has been exercised for facile removal of cationic dyes from simulated and wastewater by batch technique. The prepared material has been characterized by Fourier-transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller analysis (BET), powder X-ray diffraction (powder XRD), and pHZPC and tested best with methylene blue and crystal violet under ambient conditions. FTIR denotes the presence of carbonyl and polyphenolic groups, responsible for dye adsorption. BET surface area analysis evaluates the porous nature and specific surface area of the material, and powder XRD confirms its amorphous nature. The porous structure could be ascertained from the FESEM image, and energy dispersive X-ray analysis (EDX) confirms the elemental composition. The pH above pHzpc shows an increase in removal efficiency. The maximum adsorption capacities are 49.53 and 36.88 mg/g for methylene blue (MB) and crystal violet (CV) respectively. Linear as well as non-linear plots for kinetic and isotherm models were studied. Both dye uptake fits the linear plot of Langmuir adsorption isotherm (R2 = 0.999 and 0.995) and pseudo-second-order kinetics (R2 = 0.998 and 0.999). In the non-linear plot, the adsorption process for both dyes fit Langmuir (R2 = 0.999 for MB and R2 = 0.983 for CV) as well as Freundlich adsorption (R2 = 0.999 for MB and R2 = 0.994 for CV). 75.48% crystal violet (CV) and 73.35% methylene blue (MB) regeneration were successful in 1:1 methanol medium and reused for up to three cycles. The uptake mechanism is suggested to be a union of π-π stacking, electrostatic interaction, and weak hydrogen bonding. The material was tested with industrial effluent to prove its application in real wastewater treatment. Moreover, the material shows superior adsorption capacity than contemporary phytosorbents. To conclude, a zero-cost adsorbent using green chili stalk has been demonstrated for wastewater treatment.
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Affiliation(s)
- Ankita Panda
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, 835205, India
| | - Priyanka Priyadarsini Samal
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, 835205, India
| | - Md Atif Qaiyum
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, 835205, India
| | - Banashree Dey
- Department of Chemistry, The Graduate School College for Women, Jamshedpur, 831001, India
| | - Soumen Dey
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, 835205, India.
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El-Sharkawy RM, Abbas MHH. Unveiling antibacterial and antioxidant activities of zinc phosphate-based nanosheets synthesized by Aspergillus fumigatus and its application in sustainable decolorization of textile wastewater. BMC Microbiol 2023; 23:358. [PMID: 37980459 PMCID: PMC10657121 DOI: 10.1186/s12866-023-03054-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/09/2023] [Indexed: 11/20/2023] Open
Abstract
BACKGROUND The development of an environment-friendly nanomaterial with promising antimicrobial and antioxidant properties is highly desirable. The decolorization potentiality of toxic dyes using nanoparticles is a progressively serious worldwide issue. METHODS The successful biosynthesis of zinc nanoparticles based on phosphates (ZnP-nps) was performed using the extracellular secretions of Aspergillus fumigatus. The antibacterial activity of the biosynthetic ZnP-nps was investigated against Gram-negative bacteria and Gram-positive bacteria using the agar diffusion assay method. The antioxidant property for the biosynthetic nanomaterial was evaluated by DPPH and H2O2 radical scavenging assay. RESULTS Remarkable antibacterial and antiradical scavenging activities of ZnP-nps were observed in a dose-dependent manner. The minimum inhibitory concentration (MIC) for Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli was 25 µg/ml, however, the MIC for Bacillus subtilis was 12.5 µg/ml. The maximum adsorptive performance of nanomaterial was respectively achieved at initial dye concentration of 200 mg/L and 150 mg/L using methylene blue (MB) and methyl orange (MO), where sorbent dosages were 0.5 g for MB and 0.75 g for MB; pH was 8.0 for MB and 4.0 for MO; temperature was 30 °C; contact time was 120 min. The experimental data was better obeyed with Langmuir's isotherm and pseudo-second-order kinetic model (R2 > 0.999). The maximum adsorption capacity (qmax) of MB and MO dyes on nanomaterial were 178.25 mg/g and 50.10 mg/g, respectively. The regenerated nanomaterial, respectively, persist > 90% and 60% for MB and MO after 6 successive cycles. The adsorption capacity of the prepared zinc phosphate nanosheets crystal toward MB and MO, in the present study, was comparable/superior with other previously engineered adsorbents. CONCLUSIONS Based on the above results, the biosynthesized ZnP-nanosheets are promising nanomaterial for their application in sustainable dye decolorization processes and they can be employed in controlling different pathogenic bacteria with a potential application as antiradical scavenging agent. Up to our knowledge, this is probably the first study conducted on the green synthesis of ZnP-nanosheets by filamentous fungus and its significant in sustainable dye decolorization.
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Affiliation(s)
- Reyad M El-Sharkawy
- Botany and Microbiology Department, Faculty of Science, Benha University, Benha, 13511, Egypt.
| | - Mohamed H H Abbas
- Soils and Water Department, Faculty of Science, Benha University, Benha, Egypt
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Taweekarn T, Wongniramaikul W, Sriprom W, Limsakul W, Choodum A. Continuous-Flow System for Methylene Blue Removal Using a Green and Cost-Effective Starch Single-Rod Column. Polymers (Basel) 2023; 15:3989. [PMID: 37836037 PMCID: PMC10575207 DOI: 10.3390/polym15193989] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
A continuous-flow system based on a green and cost-effective monolithic starch cryogel column was successfully developed for removing methylene blue (MB). The proposed column exhibited high removal efficiency (up to 99.9%) and adsorption capacity (25.4 mg·g-1) for synthetic and real samples with an adsorbent cost of USD 0.02. The influence of various operation parameters, including the flow rate, initial concentration, column height, and temperature, on the MB removal efficiency was examined and reported. The MB removal efficiency remained >99% in the presence of potential interferences, highlighting the good performance of the cryogel column. The Yoon-Nelson dynamic model explained the MB adsorption better than the Bohart-Adams model, as indicated by the higher R2 values (R2 = 0.9890-0.9999) exhibited by the former and current trends of its parameters. The MB removal efficiency of the cryogel column remained at 62.7% after three reuse cycles. The wastewater containing MB collected from a local batik-production community enterprise in Phuket, Thailand was applied to the proposed continuous-flow system under optimum conditions, and results indicated that 99.7% of the MB present in 2.4 L of wastewater was removed. These results validate the excellent application potential of the cryogel column for the continuous-flow adsorption of MB. This study will facilitate future industrial applications and process designs of the continuous-flow system.
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Affiliation(s)
| | | | | | | | - Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand; (T.T.); (W.W.); (W.S.); (W.L.)
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Bharadwaj B, Dutta S, Qaiyum MA, Samal PP, Dey B, Dey S. Pristine wild sugarcane ( Saccharum spontaneum) as a biosorbent for removal of methylene blue from wastewater: isotherm, kinetics and regeneration studies. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:684-698. [PMID: 37789562 DOI: 10.1080/15226514.2023.2260002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Saccharum spontaneum, popularly known as Kashful (KF) is a seasonal perennial grass with thin culms, mostly an abundantly growing shrub during the autumn season in southern Asia. It is used as no-cost scavenger to convincingly arrest methylene blue, a recalcitrant dye from colored effluent. FTIR, FESEM-EDX, and BET surface area characterize the material well whereas the surface activity was evaluated from zero-point charge (pHZPC = 6.720). FTIR highlights the presence of polyphenolic and carboxylate moieties. The surface texture is rod-like with intermittent non-homogeneous pores with occasional fractures. The equilibrium reaches within 60 min with the maximum adsorption capacity of 20.917 mg/g. The fibrous powder of kashful stalk (KFS) follows pseudo-second-order (R2 = 0.999 for linear and R2 = 0.985 for non-linear) kinetics and both Langmuir and Freundlich isotherm model (for linear, Langmuir R2=0.995; for non-linear, R2 = 0.994 for both Langmuir and Freundlich model). The uptake process was spontaneous (ΔG= -3.077 kJ/mol) and endothermic (ΔH = 17.815 kJ/mol). 1:1 methanol could regenerate the dye-loaded material in up to 55% and onward efficiency was conducive for three consecutive cycles. Industrial effluent analysis suggests a real-time removal of ∼55% in the first cycle. Saccharum spontaneum could be exercised to solve environmental problems related to colored water.
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Affiliation(s)
- Bidisha Bharadwaj
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Brambe, India
| | - Subhashri Dutta
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Brambe, India
| | - Md Atif Qaiyum
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Brambe, India
| | | | - Banashree Dey
- Department of Chemistry, The Graduate School College for Women Jamshedpur, Jamshedpur, India
| | - Soumen Dey
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Brambe, India
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12
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Mishra A, Ojha H, Pandey J, Tiwari AK, Pathak M. Adsorption characteristics of magnetized biochar derived from Citrus limetta peels. Heliyon 2023; 9:e20665. [PMID: 37818008 PMCID: PMC10560845 DOI: 10.1016/j.heliyon.2023.e20665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 09/22/2023] [Accepted: 10/03/2023] [Indexed: 10/12/2023] Open
Abstract
Agro-industrial waste is an alarming issue that needs to be addressed. Waste valorization is an effective technique to deal with such effectively. Synthesis of biochar from fruit waste is one of the emerging approaches for adsorption, energy storage, air purification, catalysis, and biogas production trending these days. Magnetized Citrus limetta biochar (MCLB) was synthesized from Citrus limetta peels and was magnetized using iron oxide. Magnetization of biochar increases its functionalities as well as makes its separation easy. The removal of Methylene Blue (MB) dye from an aqueous solution is achieved through the use of MCLB. Methylene Blue is a prominent and widely used cationic-azo dye in the textile and printing industries. The accumulation of MB in wastewater is the major problem as MB is reported as a carcinogenic agent. The removal of MB dye with MCLB was analyzed by adsorption studies, wherein the effect of factors influencing adsorption such as initial concentration of MB dye, MCLB dosage, the effect of pH, contact time, and adsorption isotherms were studied. Characterization of MCLB was carried out using various techniques, such as FTIR, VSM, XRD, SEM, RAMAN, and Zeta potential. The adsorption isotherm mechanism was well explained with the non-linear Langmuir isotherm model resulting in a good adsorption capacity (q e = 41.57 mg/g) of MCLB when MB (co = 60 mg/L, pH ~ 6.8, T = 273K). The thermodynamics analysis revealed that MB's spontaneous and endothermic adsorption onto the MCLB surface followed pseudo-second-order kinetics. The results obtained from this study suggest that the magnetized biochar derived from Citrus limetta peels has a wide range of potential applications in the treatment of dyeing wastewater.
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Affiliation(s)
- Ayushi Mishra
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, Uttar Pradesh, India
| | - Himanshu Ojha
- Division of Radiological, Nuclear and Imaging Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S K Mazumdar Road, Timarpur, Delhi, 110054, India
| | - Jyoti Pandey
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, Uttar Pradesh, India
| | - Anjani Kumar Tiwari
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, Uttar Pradesh, India
| | - Mallika Pathak
- Department of Chemistry, Miranda House, University of Delhi, Delhi, 110007, India
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13
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Vassileva P, Tumbalev V, Kichukova D, Voykova D, Kovacheva D, Spassova I. Study on the Dye Removal from Aqueous Solutions by Graphene-Based Adsorbents. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5754. [PMID: 37687447 PMCID: PMC10488637 DOI: 10.3390/ma16175754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/16/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
In the current investigation, the removal efficiency regarding a cationic dye, methylene blue (MB), from three graphene-based materials was investigated. The materials' characterization process involved instrumental methods such as XRD, XPS, SEM, TEM, FTIR, and nitrogen adsorption at 77 K. The survey examined how various process factors influenced the ability of the studied materials to adsorb cationic dyes. These parameters encompassed contact time, initial dye concentrations, solution pH, and temperature. The adsorption procedure was effectively explained through the application of pseudo-second-order and Langmuir models. The maximum adsorption capacity for the best adsorbent at 293 K was found to be 49.4 mg g-1. In addition, the study also determined the entropy, enthalpy, and Gibbs free energy values associated with the removal of MB and showed that the adsorption of MB is endothermic, feasible, and spontaneous. The results also revealed that the studied materials are suitable adsorbents for the removal of cationic dyes.
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Affiliation(s)
- Paunka Vassileva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.T.); (D.K.); (D.V.); (D.K.); (I.S.)
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14
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Das S, Samal PP, Qaiyum MA, Dutta S, Dey B, Dey S. Neolamarckia cadamba (cadamba) waste pulp as a natural and techno-economic scavenger for methylene blue from aqueous solutions. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:208-218. [PMID: 37462946 DOI: 10.1080/15226514.2023.2232861] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
In this work, Neolamarckia cadamba (cadamba), also known as bur flower tree has been exercised to demonstrate as an excellent methylene blue scavenger from simulated as well as industrial wastewater. The particle morphology and structural insights were gained from FESEM, BET surface area, FTIR, and pHZPC. The adsorption behavior was mapped by different physico-chemical parameters such as contact time, pH, input concentration, and temperature. Experimental data reveal rapid adsorption, and >90% uptake was successful within the first 15 min and reaches equilibrium by 45 min (removal efficiency = 94.15%) at neutral pH. The maximum adsorption capacity was found to be 115.60 mg/g. The uptake process follows pseudo-second-order kinetics (R2 = 0.99), confirming a chemisorption process while the Langmuir model (R2 = 0.99) satisfactorily addresses the adsorption path. Thermodynamic parameters suggest a spontaneous, feasible, and exothermic process with increased entropy. Spent adsorbent could easily be regenerated in up to 74% using 1:1 MeOH/H2O with a potential of three-cycle use. Real-time efficacy has been established with an MB containing industrial effluent and up to 44.70% adsorption, which confirms the material's practical applicability. Statistical reliability was confirmed by the relative standard deviation. Altogether, the present material offers clean and green removal of methylene blue dye from versatile wastewater.
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Affiliation(s)
- Saismruti Das
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India
| | - Priyanka Priyadarsini Samal
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India
| | - Md Atif Qaiyum
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India
| | - Subhashri Dutta
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India
| | - Banashree Dey
- Department of Chemistry, The Graduate School College for Women, Jamshedpur, Jharkhand, India
| | - Soumen Dey
- Environment Protection Laboratory, Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India
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15
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Mussa ZH, Al-Ameer LR, Al-Qaim FF, Deyab IF, Kamyab H, Chelliapan S. A comprehensive review on adsorption of methylene blue dye using leaf waste as a bio-sorbent: isotherm adsorption, kinetics, and thermodynamics studies. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:940. [PMID: 37436672 DOI: 10.1007/s10661-023-11432-1] [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: 01/13/2023] [Accepted: 05/27/2023] [Indexed: 07/13/2023]
Abstract
Water bodies with the dye methylene blue pose serious environmental and health risks to humans. Therefore, the creation and investigation of affordable, potential adsorbents to remove methylene blue dye from water resources as a long-term fix is one focus of the scientific community. Food plants and other carbon-source serve as a hotspot for a wider range of application on different pollutants that impact the environment and living organisms. Here, we reviewed the use of treated and untreated biosorbents made from plant waste leaves for removing the dye methylene blue from aqueous media. After being modified, activated carbon made from various plant leaves improves adsorption performance. The range of activating chemicals, activation methods, and bio-sorbent material characterisation using FTIR analysis, Barunauer-Emmett-Teller (BET) surface area, scanning electron microscope (SEM-EDX), and SEM-EDX have all been covered in this review. It has been thoroughly described how the pH solution of the methylene blue dye compares to the pHPZC of the adsorbent surface. The presentation also includes a thorough analysis of the application of the isotherm model, kinetic model, and thermodynamic parameters. The selectivity of the adsorbent is the main focus of the adsorption kinetics and isotherm models. It has been studied how adsorption occurs, how surface area and pH affect it, and how biomass waste compares to other adsorbents. The use of biomass waste as adsorbents is both environmentally and economically advantageous, and it has been discovered to have exceptional color removal capabilities.
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Affiliation(s)
| | | | - Fouad Fadhil Al-Qaim
- Department of Chemistry, Faculty of Science for Women, University of Babylon, PO Box 4, Hilla, Iraq.
| | - Issa Farhan Deyab
- Medical Physics Department, Al-Mustaqbal University College, 51001, Hillah, Babil, Iraq
| | - Hesam Kamyab
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India
| | - Shreeshivadasan Chelliapan
- Engineering Department, Razak Faculty of Technology & Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
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16
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Abdel Salam J, Saleh AA, El Nenaiey TT, Yang H, Shoeib T, El-Sayed MMH. Mono- and Multicomponent Biosorption of Caffeine and Salicylic Acid onto Processed Cape Gooseberry Husk Agri-Food Waste. ACS OMEGA 2023; 8:20697-20707. [PMID: 37332775 PMCID: PMC10268614 DOI: 10.1021/acsomega.3c01254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/16/2023] [Indexed: 06/20/2023]
Abstract
There is an increasing need to find cost-effective and sustainable solutions for treating wastewater from contaminants of emerging concern (CECs). In this regard, cape gooseberry husk-typically an agri-food waste-is investigated for the first time as a potential biosorbent for the removal of model pharmaceutical contaminants of caffeine (CA) and salicylic acid (SA) from water. Three different preparations of husks were investigated and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller analysis, zeta potential, and point of zero charge measurements. The activation of the husk led to an increase in the surface area, pore volume, average pore size, and adsorption favorability. The single-component adsorption of SA and CA onto the three husks was investigated at different initial concentrations and pH values to determine the optimal operating conditions. The maximal removal efficiencies of SA and CA reached up to 85 and 63%, respectively, for the optimal husk which also offers a less energy-intensive option in its activation. This husk also exhibited high rates of adsorption that exceeded other husk preparations by up to four times. It was proposed that CA interacts electrostatically with the husk, while SA binds through weak physical interactions (e.g., van der Waals and H-bonding). In binary systems, CA adsorption was highly favored over SA adsorption, owing to its electrostatic interactions. The selectivity coefficients αSACA varied with initial concentration and ranged between 61 and 627. The regeneration of husk was also successful resulting in its re-use for up to four full consecutive cycles, further demonstrating the efficiency of cape gooseberry husk use in wastewater treatment.
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Affiliation(s)
- Jehan Abdel Salam
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835 Cairo, Egypt
| | - Amina A. Saleh
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835 Cairo, Egypt
| | - Toqa Taha El Nenaiey
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835 Cairo, Egypt
| | - Hu Yang
- State
Key Laboratory of Pollution Control and Resource Reuse, School of
the Environment, Nanjing University, Nanjing 210023, P. R. China
- Quanzhou
Institute for Environmental Protection Industry, Nanjing University, Beifeng Road, Quanzhou 362000, P. R. China
| | - Tamer Shoeib
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835 Cairo, Egypt
| | - Mayyada M. H. El-Sayed
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835 Cairo, Egypt
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17
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Golubeva A, Roychoudhury P, Dąbek P, Pałczyńska J, Pryshchepa O, Piszczek P, Pomastowski P, Gloc M, Dobrucka R, Feliczak-Guzik A, Nowak I, Kurzydłowski KJ, Buszewski B, Witkowski A. A novel effective bio-originated methylene blue adsorbent: the porous biosilica from three marine diatom strains of Nanofrustulum spp. (Bacillariophyta). Sci Rep 2023; 13:9168. [PMID: 37280270 PMCID: PMC10244400 DOI: 10.1038/s41598-023-36408-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/02/2023] [Indexed: 06/08/2023] Open
Abstract
In the present paper, for the first time the ability of the porous biosilica originated from three marine diatom strains of 'Nanofrustulum spp.' viz. N. wachnickianum (SZCZCH193), N. shiloi (SZCZM1342), N. cf. shiloi (SZCZP1809), to eliminate MB from aqueous solutions was investigated. The highest biomass was achieved under silicate enrichment for N. wachnickianum and N. shiloi (0.98 g L-1 DW and 0.93 g L-1 DW respectively), and under 15 °C for N. cf. shiloi (2.2 g L-1 DW). The siliceous skeletons of the strains were purified with hydrogen peroxide and characterized by SEM, EDS, the N2 adsorption/desorption, XRD, TGA, and ATR-FTIR. The porous biosilica (20 mg DW) obtained from the strains i.e. SZCZCH193, SZCZM1342, SZCZP1809, showed efficiency in 77.6%, 96.8%, and 98.1% of 14 mg L-1 MB removal under pH 7 for 180 min, and the maximum adsorption capacity was calculated as 8.39, 19.02, and 15.17 mg g-1, respectively. Additionally, it was possible to increase the MB removal efficiency in alkaline (pH = 11) conditions up to 99.08% for SZCZP1809 after 120 min. Modelling revealed that the adsorption of MB follows Pseudo-first order, Bangham's pore diffusion and Sips isotherm models.
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Affiliation(s)
- Aleksandra Golubeva
- Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16a, 70-383, Szczecin, Poland.
| | - Piya Roychoudhury
- Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16a, 70-383, Szczecin, Poland
| | - Przemysław Dąbek
- Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16a, 70-383, Szczecin, Poland
| | - Jagoda Pałczyńska
- Department of Inorganic and Coordination Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland
| | - Oleksandra Pryshchepa
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100, Toruń, Poland
| | - Piotr Piszczek
- Department of Inorganic and Coordination Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100, Toruń, Poland
| | - Michał Gloc
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
| | - Renata Dobrucka
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
- Department of Industrial Products and Packaging Quality, Institute of Quality Science, Poznań University of Economics and Business, al. Niepodległości 10, 61-875, Poznan, Poland
| | - Agnieszka Feliczak-Guzik
- Department of Applied Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Izabela Nowak
- Department of Applied Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Krzysztof J Kurzydłowski
- Faculty of Mechanical Engineering, Bialystok University of Technology, ul. Wiejska 45 c, 15-351, Bialystok, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalysis, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland
- Prof. Jan Czochralski Kuyavian-Pomeranian Research and Development Centre, Krasińskiego 4, 87-100, Toruń, Poland
| | - Andrzej Witkowski
- Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16a, 70-383, Szczecin, Poland
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18
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Mekala KPR, Dinesan A, Serva Peddha M, Dhale MA. Valorization of biowastes as fermentative substrate for production of Exiguobacterium sp. GM010 pigment and toxicity effect in rats. Food Chem 2023; 407:135131. [PMID: 36508870 DOI: 10.1016/j.foodchem.2022.135131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Bioconversion of biowastes chicken feather (CF), prawn carapace (PC), fish scale (FS), and corncob (CC) were used for Exiguobacterium sp. GM010 pigment production to reduce environmental pollution. Maximum pigment was produced in 4 % PC hydrolysate medium at pH 8 and 30 °C (0.831 Absorption Unit-AUmL-1) compared to other hydrolysate. Biomass (1061.19 ± 26.14 mg/100 mL) and pigment yield (34.26 ± 0.62 mg/100 mL) were higher in PC medium. In CF + PC hydrolysate combination, biomass and pigment yield was 890.58 ± 11.5 mg/100 mL and 13.94 ± 0.17 mg/100 mL, respectively. Carbon and nitrogen ratio in the medium influenced pigment production. The UV-visible spectrum showed absorption peak at 357, 466, and 491 nm. Further hue angle (77-72) and chroma values (8.68-11.38) distributed over yellowish-orange region of CIELAB spectrum indicated carotenoid like characteristics. Wistar rats fed with pigment (2000 mg/kg bw) did not show sign of toxicity in haematological, biochemical and histopathological analysis. Therefore, pigment produced by recycling the biowastes promotes sustainable bioprocess and circular bioeconomy.
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Affiliation(s)
- Krishna Prashanth Ramesh Mekala
- Department of Microbiology & Fermentation Technology, CSIR- Central Food Technological Research Institute, Mysuru 570 020, Karnataka, India; Academy of Scientific and Innovative Research, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Amruta Dinesan
- Department of Microbiology & Fermentation Technology, CSIR- Central Food Technological Research Institute, Mysuru 570 020, Karnataka, India; Academy of Scientific and Innovative Research, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Muthukumar Serva Peddha
- Department of Biochemistry, CSIR- Central Food Technological Research Institute, Mysuru 570 020, Karnataka, India; Academy of Scientific and Innovative Research, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Mohan Appasaheb Dhale
- Department of Microbiology & Fermentation Technology, CSIR- Central Food Technological Research Institute, Mysuru 570 020, Karnataka, India; Academy of Scientific and Innovative Research, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India.
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19
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Garg R, Garg R, Sillanpää M, Khan MA, Mubarak NM, Tan YH. Rapid adsorptive removal of chromium from wastewater using walnut-derived biosorbents. Sci Rep 2023; 13:6859. [PMID: 37100812 PMCID: PMC10133242 DOI: 10.1038/s41598-023-33843-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/19/2023] [Indexed: 04/28/2023] Open
Abstract
Contamination of water resources by industrial effluents containing heavy metal ions and management of solid waste from agricultural and food industries is a serious issue. This study presents the valorization of waste walnut shells as an effective and environment-friendly biosorbent for sequestrating Cr(VI) from aqueous media. The native walnut shell powder (NWP) was chemically modified with alkali (AWP) and citric acid (CWP) to obtain modified biosorbents with abundant availability of pores as active centers, as confirmed by BET analysis. During batch adsorption studies, the process parameters for Cr(VI) adsorption were optimized at pH 2.0. The adsorption data were fitted to isotherm and kinetic models to compute various adsorption parameters. The adsorption pattern of Cr(VI) was well explained by the Langmuir model suggesting the adsorbate monolayer formation on the surface of the biosorbents. The maximum adsorption capacity, qm, for Cr(VI) was achieved for CWP (75.26 mg/g), followed by AWP (69.56 mg/g) and NWP (64.82 mg/g). Treatment with sodium hydroxide and citric acid improved the adsorption efficiency of the biosorbent by 4.5 and 8.2%, respectively. The endothermic and spontaneous adsorption was observed to trail the pseudo-second-order kinetics under optimized process parameters. Thus, the chemically modified walnut shell powder can be an eco-friendly adsorbent for Cr(VI) from aqueous solutions.
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Affiliation(s)
- Rajni Garg
- Department of Applied Sciences, Galgotias College of Engineering and Technology, Greater Noida, Uttar Pradesh, 201310, India
| | - Rishav Garg
- Department of Civil Engineering, Galgotias College of Engineering and Technology, Greater Noida, Uttar Pradesh, 201310, India.
| | - Mika Sillanpää
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa
- Zhejiang Rongsheng Environmental Protection Paper Co. LTD, NO.588 East Zhennan Road, Pinghu Economic Development Zone, Pinghu, Zhejiang, 314213, People's Republic of China
| | - Mohammad Amir Khan
- Department of Civil Engineering, Galgotias College of Engineering and Technology, Greater Noida, Uttar Pradesh, 201310, India
| | - Nabisab Mujawar Mubarak
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam.
| | - Yie Hua Tan
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
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20
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Acosta-Silva YDJ, Toledano-Ayala M, Gallardo-Hernández S, Godínez LA, Méndez-López A. Investigation of TiO 2 Deposit on SiO 2 Films: Synthesis, Characterization, and Efficiency for the Photocatalytic Discoloration of Methylene Blue in Aqueous Solution. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1403. [PMID: 37110988 PMCID: PMC10146845 DOI: 10.3390/nano13081403] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
TiO2-SiO2 thin films were created on Corning glass substrates using a simple method. Nine layers of SiO2 were deposited; later, several layers of TiO2 were deposited, and their influence was studied. Raman spectroscopy, high resolution transmission electron spectroscopy (HRTEM), an X-ray diffractometer (XRD), ultraviolet-visible spectroscopy (UV-Vis), a scanning electron microscope (SEM), and atomic force microscopy (AFM) were used to describe the sample's shape, size, composition, and optical characteristics. Photocatalysis was realized through an experiment involving the deterioration of methylene blue (MB) solution exposed to UV-Vis radiation. With the increase of TiO2 layers, the photocatalytic activity (PA) of the thin films showed an increasing trend, and the maximum degradation efficiency of MB by TiO2-SiO2 was 98%, which was significantly higher than that obtained by SiO2 thin films. It was found that an anatase structure was formed at a calcination temperature of 550 °C; phases of brookite or rutile were not observed. Each nanoparticle's size was 13-18 nm. Due to photo-excitation occurring in both the SiO2 and the TiO2, deep UV light (λ = 232 nm) had to be used as a light source to increase photocatalytic activity.
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Affiliation(s)
- Yuliana de Jesús Acosta-Silva
- Research and Postgraduate Division, Faculty of Engineering, Autonomous University of Queretaro (UAQ), University Center, Querétaro 76010, Mexico
| | - Manuel Toledano-Ayala
- Research and Postgraduate Division, Faculty of Engineering, Autonomous University of Queretaro (UAQ), University Center, Querétaro 76010, Mexico
| | - Salvador Gallardo-Hernández
- Department of Physics, Center for Research and Advanced Studies of the National Polytechnic Institute, México City 07360, Mexico
| | - Luis A. Godínez
- Centro de Investigación en Química para la Economía Circular, CIQEC, Faculty of Chemistry, Autonomous University of Queretaro, University Center, Querétaro 76010, Mexico
| | - Arturo Méndez-López
- Research and Postgraduate Division, Faculty of Engineering, Autonomous University of Queretaro (UAQ), University Center, Querétaro 76010, Mexico
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Haq F, Kiran M, Chinnam S, Farid A, Khan RU, Ullah G, Aljuwayid AM, Habila MA, Mubashir M. Synthesis of bioinspired sorbent and their exploitation for methylene blue remediation. CHEMOSPHERE 2023; 321:138000. [PMID: 36724851 DOI: 10.1016/j.chemosphere.2023.138000] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/08/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
In this research article, novel starch phosphate grafted polyvinyl imidazole (StP-g-PIMDZs) was synthesized. Firstly, a phosphate group was attached to starch polymer via a phosphorylation reaction. Next, 1-vinyl imidazole (VIMDZ) was grafted on the backbone of starch phosphate (StP) through a free radical polymerization reaction. The synthesis of these modified starches was confirmed by 1H NMR, 31P NMR and FT-IR techniques. The grafting of vinyl imidazole onto StP diminished the crystallinity. Due to the insertion of the aromatic imidazole ring, the StP-g-PIMDZs demonstrated greater thermal stability. The StP and StP-g-PIMDZs were used as sorbents for the adsorption of methylene blue dye (MBD) from the model solution. The maximum removal percentage for starch, StP, StP-g-PIMDZ 1, StP-g-PIMDZ 2 and StP-g-PIMDZ 3 was found to be 60.6%, 66.7%, 74.2%, 85.3 and 95.4%, respectively. The Pseudo second order kinetic model and Langmuir adsorption isotherm were best suited to the experimental data with R2 = 0.999 and 0.99, respectively. Additionally, the thermodynamic parameters showed that the adsorption process was feasible, spontaneous, endothermic and favored chemi-sorption mechanism.
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Affiliation(s)
- Fazal Haq
- Institute of Chemical Sciences, Gomal University, D.I.Khan, 29050, Pakistan
| | - Mehwish Kiran
- Faculty of Agriculture, Gomal University, D.I.Khan, 29050, Pakistan
| | - Sampath Chinnam
- Department of Chemistry, M.S. Ramaiah Institute of Technology (Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru, Karnataka, 560054, India
| | - Arshad Farid
- Gomal Center of Biochemistry and Biotechnology, Gomal University, D.I.Khan, 29050, Pakistan.
| | - Rizwan Ullah Khan
- Institute of Chemical Sciences, Gomal University, D.I.Khan, 29050, Pakistan
| | - Ghazanfar Ullah
- Faculty of Agriculture, Gomal University, D.I.Khan, 29050, Pakistan; Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, Leuven, 3001, Belgium
| | - Ahmed Muteb Aljuwayid
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mohamed A Habila
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Muhammad Mubashir
- Department of Petroleum Engineering, School of Engineering, Asia Pacific University of Technology and Innovation, 57000, Kuala Lumpur, Malaysia.
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22
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Heidari Y, Noroozian E, Maghsoudi S. Electrospun nanofibers of cellulose acetate/metal organic framework-third generation PAMAM dendrimer for the removal of methylene blue from aqueous media. Sci Rep 2023; 13:4924. [PMID: 36966177 PMCID: PMC10039946 DOI: 10.1038/s41598-023-32097-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/22/2023] [Indexed: 03/27/2023] Open
Abstract
In this research, magnetic metal-organic framework nanofibers were produced by the electrospinning method. The nanocomposite was functionalized by third generation hyperbranched poly(amidoamine) dendrimer (PAMAM) to improve its dye adsorption efficiency from aqueous media. The characteristics of the synthesized magnetic nanocomposite was determined by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS) along with elemental mapping analysis and scanning electron microscopy (SEM). Central composite design (CCD) based on response surface methodology (RSM) was performed to optimize the adsorption variables and the values of coefficient of determination (R2) and adjusted R2 were 0.9837 and 0.9490, respectively. The results obtained demonstrated remarkable properties of the synthesized nanofiber as adsorbent for methylene blue from aqueous solutions with the removal efficiency of 95.37% and maximum methylene blue (MB) adsorption capacity of 940.76 mg g-1 under optimized conditions. In addition, it was shown that kinetics and adsorption isotherm of the dye removal process followed Langmuir and pseudo-second-order models, respectively. Thermodynamic study of the dye removal indicated that the process was spontaneous and favorable at higher temperatures. Also, the reusability study shows favorable dye removal efficiency of 80.67% even after 4 cycles. To investigate the performance of the adsorbent for the removal of MB in real samples, a sewage sample from a local hospital was used. The result showed good efficiency of the adsorbent.
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Affiliation(s)
- Yasaman Heidari
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ebrahim Noroozian
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran.
| | - Shahab Maghsoudi
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran
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23
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Catalytic Hydrothermal Carbonization of Olive Wood Charcoal for Methylene Blue Adsorption from Wastewater: Optimization, Isotherm, Kinetic and Thermodynamic Studies. CHEMISTRY AFRICA 2023. [DOI: 10.1007/s42250-023-00628-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Oyim J, Amuhaya E, Nyokong T. Activated carbon-decorated polyacrylonitrile fibers and their porphyrin-immobilized composites for removal of methylene blue dye and Ciprofloxacin in water. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2023. [DOI: 10.1080/10601325.2023.2183868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- James Oyim
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, South Africa
| | - Edith Amuhaya
- School of Pharmacy and Health Sciences, United States International University, Nairobi, Kenya
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, South Africa
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25
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Abutaleb A, Imran M, Zouli N, Khan AH, Hussain S, Ali MA, Bakather O, Gondal MA, Khan NA, Panchal H, Zahmatkesh S. Fe 3O 4-multiwalled carbon nanotubes-bentonite as adsorbent for removal of methylene blue from aqueous solutions. CHEMOSPHERE 2023; 316:137824. [PMID: 36640990 DOI: 10.1016/j.chemosphere.2023.137824] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
The contamination of water due to present of dyes, poses serious health problems. Therefore, treatment of contaminated water is necessary to resolve this problem. A tailored co-precipitation technique has been successfully used to prepare Fe3O4-multiwalled Carbon Nanotubes (MWCNTs)-Bentonite nanocomposite. The methylene blue present in aqueous solutions was removed using synthesized nanocomposite as adsorbent. The synthesized novel nanocomposite was analyzed by various characterization techniques. The scanning electron microscope analysis shows that Bentonite and Fe3O4 nanoparticles are well decorated with the MWCNTs matrix. The nanocomposite exhibited a high BET surface area of 204.01 m2/g with a pore volume of 0.367 cm3/g. The BJH adsorption average pore diameter was analyzed to be 7.2 nm. Moreover, the adsorption model was in agreement with the Redlich-Peterson model with adsorption capacity of 48.2 mg/g with a high nonlinear regression coefficient (R2 = 0.985) and a low chi-square value (χ2 = 6.18). Kinetics data were described well by pseudo-first-order and pseudo second order, models with a high non-linear regression coefficient (R2 = 0.993). Adsorption of MB dye was determined to be a non-spontaneous and endothermic process since the values of ΔG, and ΔH were positive, and the entropy value was negative. Thus, the synthesized nanocomposite established itself as a promising candidate for the water treatment process.
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Affiliation(s)
- Ahmed Abutaleb
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia.
| | - Mohd Imran
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Nasser Zouli
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Afzal Husain Khan
- Department of Civil Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Shahir Hussain
- Department of Electrical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Mohammad Ashraf Ali
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Omer Bakather
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O.Box 706, Jazan, 45142, Saudi Arabia
| | - Mohammad Ashraf Gondal
- Laser Research Group, Physics Department, Center of Excellence in Nanotechnology, &K.A.CARE Energy Research and Innovation Center, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Nadeem A Khan
- Department of Civil Engineering, Jamia Millia Islamia Central University, New Delhi, 110025, India
| | - Hitesh Panchal
- Mechanical Engineering Department, Government Engineering College Patan, Gujarat, India
| | - Sasan Zahmatkesh
- Tecnologico de Monterrey, Escuela de Ingenieríay Ciencias, Puebla, Mexico.
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Bopape DA, Tetana Z, Mabuba N, Motaung DE, Hintsho-Mbita NC. Biosynthesis of TiO2 nanoparticles using Commelina benghanlensis for the photodegradation of methylene blue dye and antibiotics: Effect of plant concentration. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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27
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Powdered and beaded sawdust materials modified iron (III) oxide-hydroxide for adsorption of lead (II) ion and reactive blue 4 dye. Sci Rep 2023; 13:531. [PMID: 36631520 PMCID: PMC9834253 DOI: 10.1038/s41598-023-27789-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
The problems of lead and reactive blue 4 (RB4) dye contamination in wastewater are concerns because of their toxicities to aquatic life and water quality, so lead and RB4 dye removals are recommended to remove from wastewater before discharging. Sawdust powder (SP), sawdust powder doped iron (III) oxide-hydroxide (SPF), sawdust beads (SPB), and sawdust powder doped iron (III) oxide-hydroxide beads (SPFB) were synthesized and characterized with various techniques, and their lead or RB4 dye removal efficiencies were investigated by batch experiments, adsorption isotherms, kinetics, and desorption experiments. SPFB demonstrated higher specific surface area (11.020 m2 g-1) and smaller pore size (3.937 nm) than other materials. SP and SPF were irregular shapes with heterogeneous structures whereas SPB and SPFB had spherical shapes with coarse surfaces. Calcium (Ca) and oxygen (O) were found in all materials whereas iron (Fe) was only found in SPF and SPFB. O-H, C-H, C=C, and C-O were detected in all materials. Their lead removal efficiencies of all materials were higher than 82%, and RB4 dye removal efficiencies of SPB and SPFB were higher than 87%. Therefore, adding iron (III) oxide-hydroxide and changing material form helped to improve material efficiencies for lead or RB4 dye adsorption. SP and SPB corresponded to Langmuir model related to a physical adsorption process whereas SPF and SPFB corresponded to the Freundlich model correlated to a chemisorption process. All materials corresponded to a pseudo-second-order kinetic model relating to the chemical adsorption process. All materials could be reused more than 5 cycles with high lead removal of 63%, and SPB and SPFB also could be reused more than 5 cycles for high RB4 dye removal of 72%. Therefore, SPFB was a potential material to apply for lead or RB4 dye removal in industrial applications.
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Tagar U, Volpe M, Messineo A, Volpe R. Highly ordered CaO from cuttlefish bone calcination for the efficient adsorption of methylene blue from water. Front Chem 2023; 11:1132464. [PMID: 36874067 PMCID: PMC9977829 DOI: 10.3389/fchem.2023.1132464] [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: 12/27/2022] [Accepted: 01/30/2023] [Indexed: 02/22/2023] Open
Abstract
The aim of this study is to synthesize cheap and highly ordered CaO from cuttlefish bone (CFB) as a green alternative to conventional adsorbents such as activated carbon. This study focuses on the synthesis of highly ordered CaO via calcination of CFB, at two different temperatures (900 and 1000°C) and two holding times (0.5 and 1 h), as a potential green route for water remediation. The as-prepared highly ordered CaO was tested as an adsorbent using methylene blue (MB) as a model compound for dye contaminants in water. Different CaO adsorbent doses (0.05, 0.2, 0.4, and 0.6 g) were used, keeping the MB concentration fixed at 10 mg/L. The morphology and crystalline structure of the CFB before and after calcination was characterized via scanning electron microscope (SEM) and X-ray diffraction (XRD) analyses, while the thermal behavior and surface functionalities were characterized by thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy, respectively. Adsorption experiments using different doses of CaO synthesized at 900°C for 0.5 h showed an MB removal efficiency as high as 98% by weight using 0.4 g (adsorbent)/L(solution). Two different adsorption models, the Langmuir adsorption model and the Freundlich adsorption model, along with pseudo-first-order and pseudo-second-order kinetic models, were studied to correlate the adsorption data. The removal of MB via highly ordered CaO adsorption was better modeled by the Langmuir adsorption isotherm giving (R2 =0.93), thus proving a monolayer adsorption mechanism following pseudo-second-order kinetics (R2= 0.98), confirming that chemisorption reaction occurs between the MB dye molecule and CaO.
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Affiliation(s)
- Uroosa Tagar
- School of Engineering and Materials Science, Queen Mary University of London, London, United Kingdom
| | - Maurizio Volpe
- Faculty of Engineering and Architecture, University of Enna Kore, Cittadella Universitaria, Enna, Italy
| | - Antonio Messineo
- Faculty of Engineering and Architecture, University of Enna Kore, Cittadella Universitaria, Enna, Italy
| | - Roberto Volpe
- School of Engineering and Materials Science, Queen Mary University of London, London, United Kingdom
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Valizadeh K, Bateni A, Sojoodi N, Ataabadi MR, Behroozi AH, Maleki A, You Z. Magnetized inulin by Fe 3O 4 as a bio-nano adsorbent for treating water contaminated with methyl orange and crystal violet dyes. Sci Rep 2022; 12:22034. [PMID: 36539589 PMCID: PMC9767922 DOI: 10.1038/s41598-022-26652-7] [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: 09/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Current work focuses on fabricating a new bio-nano adsorbent of Fe3O4@inulin nanocomposite via an in-situ co-precipitation procedure to adsorb methyl orange (MO) and crystal violet (CV) dyes from aqueous solutions. Different physical characterization analyses verified the successful fabrication of the magnetic nanocomposite. The adsorbent performance in dye removal was evaluated by varying initial dye concentration, adsorbent dosage, pH and temperature in 5110 mg/L, 0.10.8 g/L, 111 and 283-338 K, respectively. Due to the pH of zero point of charge and intrinsic properties of dyes, the optimum pHs were 5 and 7 for MO and CV adsorption, respectively. The correlation of coefficient (R2) and reduced chi-squared value were the criteria in order to select the best isotherm and kinetics models. The Langmuir model illustrated a better fit for the adsorption data for both dyes, demonstrating the maximum adsorption capacity of 276.26 and 223.57 mg/g at 338 K for MO and CV, respectively. As well, the pseudo-second-order model showed a better fitness for kinetics data compared to the pseudo-first-order and Elovich models. The thermodynamic parameters exhibited that the dye adsorption process is endothermic and spontaneous, which supported the enhanced adsorption rate by increasing temperature. Moreover, the nanocomposite presented outstanding capacity and stability after 6 successive cycles by retaining more than 87% of its initial dye removal efficiency. Overall, the magnetized inulin with Fe3O4 could be a competent adsorbent for eliminating anionic and cationic dyes from water.
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Affiliation(s)
- Kamran Valizadeh
- grid.411463.50000 0001 0706 2472Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Amir Bateni
- grid.411463.50000 0001 0706 2472Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Nazanin Sojoodi
- grid.411463.50000 0001 0706 2472Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Rostami Ataabadi
- grid.411748.f0000 0001 0387 0587School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Amir Hossein Behroozi
- grid.411748.f0000 0001 0387 0587School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Ali Maleki
- grid.411748.f0000 0001 0387 0587Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114 Iran
| | - Zhenjiang You
- grid.1038.a0000 0004 0389 4302Center for Sustainable Energy and Resources, Edith Cowan University, Joondalup, WA 6027 Australia ,grid.1003.20000 0000 9320 7537School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072 Australia
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Taweekarn T, Wongniramaikul W, Boonkanon C, Phanrit C, Sriprom W, Limsakul W, Towanlong W, Phawachalotorn C, Choodum A. Starch Biocryogel for Removal of Methylene Blue by Batch Adsorption. Polymers (Basel) 2022; 14:polym14245543. [PMID: 36559910 PMCID: PMC9787997 DOI: 10.3390/polym14245543] [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: 11/24/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
A green monolithic starch cryogel was prepared and applied for the removal of methylene blue (MB) using a batch system. The influence of various experimental parameters on MB adsorption was investigated. High removal efficiency (81.58 ± 0.59%) and adsorption capacity (34.84 mg g-1) were achieved. The Langmuir model better fitted the experimental data (determination coefficient (R2) = 0.9838) than the Freundlich one (R2 = 0.8542), while the kinetics of MB adsorption on the cryogel followed a pseudo-second-order model. The adsorption process was spontaneous and endothermic with an activation energy of 37.8 kJ mol-1 that indicated physical adsorption. The starch cryogel was used for MB removal from a wastewater sample collected from a local Batik production community enterprise in Phuket, Thailand, and a removal efficiency of 75.6% was achieved, indicating that it has a high potential as a green adsorbent for MB removal.
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Affiliation(s)
- Tarawee Taweekarn
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Chanita Boonkanon
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Chonthicha Phanrit
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Wilasinee Sriprom
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Wadcharawadee Limsakul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Wanchitra Towanlong
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Chanadda Phawachalotorn
- King Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon Campus, Chumphon 86160, Thailand
| | - Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
- Correspondence: ; Tel.: +66-(0)-7627-6481
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31
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Babu RS, Prasanna K, Kumar PS. A censorious review on the role of natural lignocellulosic fiber waste as a low-cost adsorbent for removal of diverse textile industrial pollutants. ENVIRONMENTAL RESEARCH 2022; 215:114183. [PMID: 36063910 DOI: 10.1016/j.envres.2022.114183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/20/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Textile industries produce fabricated colored products using toxic dyes and other harsh chemicals. It is the responsibility of the textile industries to treat and eliminate these hazardous pollutants. However, due to the growing population demand, the treatment of these hazardous effluents is ineffective and imposes the treatment cost over the end users. The release of partially treated effluents in the environment may cause a severe threat to the ecology and its biota. The critical objective is to treat textile effluents efficiently using agricultural natural fiber waste. Generation of agricultural lignocellulosic fibrous waste increases every year due to growing population demand. Its use in the modern world is limited due to synthetic products. An alternative has enumerated to avoid wastage of fibrous resources and its clean disposal. OBJECTIVE The main objective of this review paper discussed the feasibility of lignocellulosic fibers and other lignocellulosic materials as natural low-cost adsorbent. METHODS The literature study was performed using Web of Science and Scopus indexed journals. The main factors considered to increase the adsorption ability, including the types of lignocellulosic surface modification techniques were searched with utmost importance for quality results. Intending to summarize the literature survey and provide persuasive content, systematic review process was considered for this novel article. RESULTS Out of 230 valuable publications, 159 published articles were considered for the present study until March 2022. The articles surplus with factors affecting adsorption (pH, adsorption dosage, surface area, temperature, initial concentration, contact time, physical and chemical properties of pollutants) and surface modification techniques (physical, chemical, and biological) were considered for this manuscript. CONCLUSION Overall, the physical and chemical modification methods are widely used instead of biological methods due to various factors as discussed briefly. Furthermore, the finding of this article supports the fact that the fibrous by-product resources are wasted in various occasions due to the modern lifestyle. Even though there is evidential possibility to implement the low-cost adsorbents, the industries limit their application prospects due to existing technology and financial compromises.
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Affiliation(s)
- R Shiam Babu
- Department of Civil Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu Dist., Tamil Nadu, 603203, India.
| | - K Prasanna
- Department of Civil Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu Dist., Tamil Nadu, 603203, India.
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, 603110, India.
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32
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Haq F, Farid A, Ullah N, Kiran M, Khan RU, Aziz T, Mehmood S, Haroon M, Mubashir M, Bokhari A, Chuah LF, Show PL. A study on the uptake of methylene blue by biodegradable and eco-friendly carboxylated starch grafted polyvinyl pyrrolidone. ENVIRONMENTAL RESEARCH 2022; 215:114241. [PMID: 36100100 DOI: 10.1016/j.envres.2022.114241] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/24/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
This study is based on the removal of methylene blue (MB) from aqueous solution by cost effective and biodegradable adsorbent carboxymethyl starch grafted polyvinyl pyrolidone (Car-St-g-PVP). The Car-St-g-PVP was synthesized by grafting vinyl pyrolidone onto carboxymethyl starch by free radical polymerization reaction. The structure and different properties of Car-St-g-PVP were determined by 1H NMR, FT-IR, XRD, TGA and SEM. A series of batch experiments were conducted for the removal of MB, The adsorption affecting factors such as temperature, contact time, initial concentration of MB dye, dose of Car-St-g-PVP and pH were studied in detail. The other parameters like the thermodynamic study, kinetics and isothermal models were fitted to the experimental data. The results showed that pseudo 2nd order kinetics and Langmuir's adsorption isotherms were best fitted to experimental data with regression coefficient R2 viz. 0.99 and 0.97. The kinetic study showed that the adsorption mechanism favored chemisorption. The Gibbs free energy (ΔG°) for the adsorption process was found to be -7.31 kJ/mol, -8.23 kJ/mol, -9.00 kJ/mol and -10.10 kJ/mol at 25 °C, 35 °C, 45 °C and 55 °C respectively. The negative values of ΔG° suggested the spontaneous nature of the adsorption process. Similarly, the positive values of entropy (ΔS°) and enthalpy (ΔH°) 91.27 J/k.mol and 19.90 kJ/mol showed the increasing randomness and endothermic nature of the adsorption process. The value of separation factor (RL) was found to be less than one (RL < 1), which supported the feasibility of the adsorption process. The maximum MB removal percentage (% R) was found to be 98.6%. So, these findings show that Car-St-g-PVP can be meritoriously used for the treatment of MB from wastewater.
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Affiliation(s)
- Fazal Haq
- Institute of Chemical Sciences, Gomal University, D.I.Khan, 29050, Pakistan
| | - Arshad Farid
- Gomal Center of Biochemistry and Biotechnology, Gomal University, D.I.Khan, 29220, Pakistan
| | - Naveed Ullah
- Institute of Chemical Sciences, Gomal University, D.I.Khan, 29050, Pakistan
| | - Mehwish Kiran
- Faculty of Agriculture, Gomal University, D.I.Khan, 29050, Pakistan
| | - Rizwan Ullah Khan
- Institute of Chemical Sciences, Gomal University, D.I.Khan, 29050, Pakistan
| | - Tariq Aziz
- School of Engineering, Westlake University, Hangzhou, 310024, China
| | - Sahid Mehmood
- State Key Laboratory, Zhejiang University, Hangzhou, 310027, China
| | - Muhammad Haroon
- Department of Chemistry, University of Turbat, Balochistan, 92600, Pakistan
| | - Muhammad Mubashir
- Department of Petroleum Engineering, School of Engineering, Asia Pacific University of Technology and Innovation, 57000, Kuala Lumpur, Malaysia
| | - Awais Bokhari
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Punjab, 54000, Lahore, Pakistan; Sustainable Process Integration Laboratory - SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology - VUT Brno, Technická 2896/2, 616 69, Brno, Czech Republic.
| | - Lai Fatt Chuah
- Faculty of Maritime Studies, Universiti Malaysia Terengganu, Terengganu, Malaysia.
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor, Malaysia.
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Dosa M, Grifasi N, Galletti C, Fino D, Piumetti M. Natural Zeolite Clinoptilolite Application in Wastewater Treatment: Methylene Blue, Zinc and Cadmium Abatement Tests and Kinetic Studies. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8191. [PMID: 36431678 PMCID: PMC9695311 DOI: 10.3390/ma15228191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
In recent decades, several abatement techniques have been proposed for organic dyes and metal cations. In this scenario, adsorption is the most known and studied. Clinoptilolite was considered, since it is a zeolite with a relatively low cost (200-600 $ tons-1) compared to the most well-known adsorbent used in wastewater treatment. In this work, Clinoptilolite was used for the adsorption of Methylene Blue (MB) at three different concentrations, namely, 100, 200, and 250 ppm. Furthermore, the adsorption capacity of the natural zeolite was compared with that of Activated Charcoal (250 ppm of MB). The two adsorbents were characterized by complementary techniques, such as N2 physisorption at -196 °C, X-ray diffraction, and field emission scanning electron microscopy. During the adsorption tests, Clinoptilolite exhibited the best adsorption capacities at 100 ppm: the abatement reached 98% (t = 15 min). Both Clinoptilolite and Activated Charcoal, at 250 ppm, exhibited the same adsorption capacities, namely, 96%. Finally, at 250 ppm MB, the adsorption capacity of Clinoptilolite was analyzed with the copresence of Zn2+ and Cd2+ (10 ppm), and the adsorption capacities were compared with those of Activated Charcoal. The results showed that both adsorbents achieved 100% MB abatement (t = 40 min). However, cation adsorption reached a plateau after 120 min (Zn2+ = 86% and 57%; Cd2+ = 53% and 50%, for Activated Charcoal and Clinoptilolite, respectively) due to the preferential adsorption of MB molecules. Furthermore, kinetic studies were performed to fully investigate the adsorption mechanism. It was evidenced that the pseudo-second-order kinetic model is effective in describing the adsorption mechanism of both adsorbents, highlighting the chemical interaction between the adsorbent and adsorbate.
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Matveev AT, Varlamova LA, Konopatsky AS, Leybo DV, Volkov IN, Sorokin PB, Fang X, Shtansky DV. A New Insight into the Mechanisms Underlying the Discoloration, Sorption, and Photodegradation of Methylene Blue Solutions with and without BNO x Nanocatalysts. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15228169. [PMID: 36431653 PMCID: PMC9693246 DOI: 10.3390/ma15228169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 05/13/2023]
Abstract
Methylene blue (MB) is widely used as a test material in photodynamic therapy and photocatalysis. These applications require an accurate determination of the MB concentration as well as the factors affecting the temporal evolution of the MB concentration. Optical absorbance is the most common method used to estimate MB concentration. This paper presents a detailed study of the dependence of the optical absorbance of aqueous methylene blue (MB) solutions in a concentration range of 0.5 to 10 mg·L-1. The nonlinear behavior of optical absorbance as a function of MB concentration is described for the first time. A sharp change in optical absorption is observed in the range of MB concentrations from 3.33 to 4.00 mg·L-1. Based on the analysis of the absorption spectra, it is concluded that this is due to the formation of MB dimers and trimers in the specific concentration range. For the first time, a strong, thermally induced discoloration effect of the MB solution under the influence of visible and sunlight was revealed: the simultaneous illumination and heating of MB solutions from 20 to 80 °C leads to a twofold decrease in the MB concentration in the solution. Exposure to sunlight for 120 min at a temperature of 80 °C led to the discoloration of the MB solution by more than 80%. The thermally induced discoloration of MB solutions should be considered in photocatalytic experiments when tested solutions are not thermally stabilized and heated due to irradiation. We discuss whether MB is a suitable test material for photocatalytic experiments and consider this using the example of a new photocatalytic material-boron oxynitride (BNOx) nanoparticles-with 4.2 and 6.5 at.% of oxygen. It is shown that discoloration is a complex process and includes the following mechanisms: thermally induced MB photodegradation, MB absorption on BNOx NPs, self-sensitizing MB photooxidation, and photocatalytic MB degradation. Careful consideration of all these processes makes it possible to determine the photocatalytic contribution to the discoloration process when using MB as a test material. The photocatalytic activity of BNOx NPs containing 4.2 and 6.5 at.% of oxygen, estimated at ~440 μmol·g-1·h-1. The obtained results are discussed based on the results of DFT calculations considering the effect of MB sorption on its self-sensitizing photooxidation activity. A DFT analysis of the MB sorption capacity with BNOx NPs shows that surface oxygen defects prevent the sorption of MB molecules due to their planar orientation over the BNOx surface. To enhance the sorption capacity, surface oxygen defects should be eliminated.
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Affiliation(s)
- Andrei T. Matveev
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
- Correspondence: (A.T.M.); (D.V.S.)
| | - Liubov A. Varlamova
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Anton S. Konopatsky
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Denis V. Leybo
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Ilia N. Volkov
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Pavel B. Sorokin
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Xiaosheng Fang
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Dmitry V. Shtansky
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
- Correspondence: (A.T.M.); (D.V.S.)
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Methylene Blue Removal by Chitosan Cross-Linked Zeolite from Aqueous Solution and Other Ion Effects: Isotherm, Kinetic, and Desorption Studies. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/1853758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Developing innovative technology for removing methylene blue (MB) from water is essential since the widespread discharge of MB from industrial effluents causes problems for humans and the environment. In this study, we conducted the adsorption method, a simple technique that utilizes an adsorbent. Chitosan is cross-linked with zeolite as a promising adsorbent material and environmentally friendly. For the characterization, FTIR, SEM-EDS, DLS, and pHzpc were analyzed. It was discovered that the removal percentage reached 97% with an adsorption capacity of 242.51 mg/g for 60 minutes at pH 10. The adsorption isotherm and kinetic model were investigated. As a result, the Freundlich model and pseudo-second-order model were fitted to the adsorption process. Moreover, the effect of other ions was investigated for 5 minutes of mixing time. The results showed that the removal percentage increased in the presence of H2O2 ion. Contrary to sodium chloride, glucose, and citric acid ions, the effectiveness of H2SO4 as a desorbing agent was 99.65% for 30 minutes at 45°C.
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Singh K, Krishna Paidi M, Kulshrestha A, Bharmoria P, Kumar Mandal S, Kumar A. Deep eutectic solvents based biorefining of Value-added chemicals from the diatom Thalassiosira andamanica at room temperature. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Goren A, Recepoğlu YK, Edebali̇ Ö, Sahin C, Genisoglu M, Okten HE. Electrochemical Degradation of Methylene Blue by a Flexible Graphite Electrode: Techno-Economic Evaluation. ACS OMEGA 2022; 7:32640-32652. [PMID: 36119975 PMCID: PMC9476165 DOI: 10.1021/acsomega.2c04304] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
In this study, electrochemical removal of methylene blue (MB) from water using commercially available and low-cost flexible graphite was investigated. The operating conditions such as initial dye concentration, initial solution pH, electrolyte dose, electrical potential, and operating time were investigated. The Box-Behnken experimental design (BBD) was used to optimize the system's performance with the minimum number of tests possible, as well as to examine the independent variables' impact on the removal efficiency, energy consumption, operating cost, and effluent MB concentration. The electrical potential and electrolyte dosage both improved the MB removal efficiency, since increased electrical potential facilitated production of oxidizing agents and increase in electrolyte dosage translated into an increase in electrical current transfer. As expected, MB removal efficiency increased with longer operational periods. The combined effects of operating time-electrical potential and electrical potential-electrolyte concentration improved the MB removal efficiency. The maximum removal efficiency (99.9%) and lowest operating cost (0.012 $/m3) were obtained for initial pH 4, initial MB concentration 26.5 mg/L, electrolyte concentration 0.6 g/L, electrical potential 3 V, and operating time 30 min. The reaction kinetics was maximum for pH 5, and as the pH increased the reaction rates decreased. Consequent techno-economic assessment showed that electrochemical removal of MB using low-cost and versatile flexible graphite had a competitive advantage.
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Affiliation(s)
- Aysegul
Yagmur Goren
- Department
of Environmental Engineering, Izmir Institute
of Technology, İzmir 35430, Turkey
| | - Yaşar Kemal Recepoğlu
- Department
of Chemical Engineering, Izmir Institute
of Technology, İ zmir 35430, Turkey
| | - Özge Edebali̇
- Department
of Environmental Engineering, Izmir Institute
of Technology, İzmir 35430, Turkey
| | - Cagri Sahin
- Department
of Environmental Engineering, Izmir Institute
of Technology, İzmir 35430, Turkey
| | - Mesut Genisoglu
- Department
of Environmental Engineering, Izmir Institute
of Technology, İzmir 35430, Turkey
| | - Hatice Eser Okten
- Department
of Environmental Engineering, Izmir Institute
of Technology, İzmir 35430, Turkey
- Environmental
Development Application and Research Centre, İzmir Institute of Technology, İzmir 35430, Turkey
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Krishnamoorthy M, Mohamed MA, Kaus NHM, Yusoff SFM. Adsorption and Photocatalytic Degradation of Cationic Dyes over Bismuth Ferrite (BFO) Intercalated on Liquid Natural Rubber-based Hydrogel Compound. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Evaluation of Zn Adenine-Based Bio-MOF for Efficient Remediation of Different Types of Dyes. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/6818348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
As an eco-friendly material, Zn-adeninate bio-metal-organic framework (bio-MOF) was investigated as an efficient adsorbent for both anionic and cationic dyes. The adsorption capability of the synthesized Zn-adeninate bio-MOF was confirmed by its notable surface area of 52.62 m2 g−1 and total pore volume of 0.183 cm3 g−1. The bio-MOF adsorption profiles of anionic direct red 81 (DR-81) and cationic methylene blue (MB) dyes were investigated under different operating parameters. The optimum dosages of Zn-adeninate bio-MOF were 0.5 g L−1 and 1 g L−1 for MB and DR-81 decolorization, respectively. The pHPZC of Zn-adeninate bio-MOF was 7.2, and maximum monolayer adsorption capacity was 132.15 mg g–1 for MB, which decreased to 82.54 mg g–1 for DR-81 dye. Thermodynamic data indicated the spontaneous and endothermic nature of the decolorization processes. Additionally, the adsorption processes were in agreement with the Langmuir and pseudo-second-order kinetic models. The synthesized Zn-adeninate bio-MOF could be reused several times with high decolorization ability. These findings demonstrated that the synthesized Zn bio-MOF is an effective and promising adsorbent material for the removal of both cationic and anionic dyes from polluted water.
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Synthesis, characterization and photocatalytic properties of nanostructured lanthanide doped β-NaYF 4/TiO 2 composite films. Sci Rep 2022; 12:13748. [PMID: 35961994 PMCID: PMC9374679 DOI: 10.1038/s41598-022-17256-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/22/2022] [Indexed: 11/28/2022] Open
Abstract
The photocatalytic approach is known to be one of the most promising advanced oxidation processes for the tertiary treatment of polluted water. In this paper, β-NaYF4/TiO2 composite films have been synthetized through a novel sol–gel/spin-coating approach using a mixture of β-diketonate complexes of Na and Y, and Yb3+, Tm3+, Gd3+, Eu3+ as doping ions, together with the TiO2 P25 nanoparticles. The herein pioneering approach represents an easy, straightforward and industrially appealing method for the fabrication of doped β-NaYF4/TiO2 composites. The effect of the doped β-NaYF4 phase on the photocatalytic activity of TiO2 for the degradation of methylene blue (MB) has been deeply investigated. In particular, the upconverting TiO2/β-NaYF4: 20%Yb, 2% Gd, x% Tm (x = 0.5 and 1%) and the downshifting TiO2/β-NaYF4: 10% Eu composite films have been tested on MB degradation both under UV and visible light irradiation. An improvement up to 42.4% in the degradation of MB has been observed for the TiO2/β-NaYF4: 10% Eu system after 240 min of UV irradiation.
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41
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Khan S, Sadiq M, Muhammad N. Enhanced photocatalytic potential of TiO 2 nanoparticles in coupled CdTiO 2 and ZnCdTiO 2 nanocomposites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:54745-54755. [PMID: 35304723 DOI: 10.1007/s11356-022-19807-6] [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: 06/15/2021] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Photodegradation of organic pollutants is the most suitable and cheaper technique to counter decontamination issues. Among the metal-based nanoparticles, TiO2 is considered to be the most effective heterogeneous photocatalyst for the photodegradation of organic pollutants. However, the large band gap and the high electron-hole pair recombination rate limit its practical applications. Herein, an approach was introduced to minimize the mentioned limitations by preparing CdTiO2 and ZnCdTiO2 nanocomposites by co-precipitation method. The as-synthesized TiO2, CdTiO2, and ZnCdTiO2 were characterized by scanning electron microscopy, transmission electron microscopy (TEM), energy dispersive X-ray, X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and UV-visible spectrophotometry. Morphological analysis revealed that TiO2 are mostly agglomerated with different shapes and sizes and the nanocomposites are mostly in dispersed form. The components of the nanocomposites are strongly intercalated in the ternary nanocomposite as confirmed from TEM analysis. XRD analysis confirmed the anatase TiO2 while the UV-visible analysis showed the shifting toward higher wavelength. The band gap energy of TiO2 (2.65) decreased to 2.6 and 2.56 eV for CdTiO2 and ZnCdTiO2, respectively. BET analysis has shown a 47.2 m2/g surface area for the ternary ZnCdTiO2 nanocomposite. The photodegradation results revealed that TiO2, CdTiO2, and ZnCdTiO2 degraded about 74%, 86%, and 97.61% methylene blue dye, respectively, within 2 h. Maximum photodegradation is achieved in the basic medium and the ternary ZnCdTiO2 nanocomposite degraded 98% dye at pH 10.
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Affiliation(s)
- Shakeel Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan
| | - Muhammad Sadiq
- Department of Chemistry, University of Malakand, Chakdara, Dir (Lower), Pakistan
| | - Niaz Muhammad
- Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan.
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Sharma AK, Dhiman A, Nayak AK, Mishra R, Agrawal G. Environmentally benign approach for the efficient sequestration of methylene blue and coomassie brilliant blue using graphene oxide emended gelatin/κ-carrageenan hydrogels. Int J Biol Macromol 2022; 219:353-365. [PMID: 35926676 DOI: 10.1016/j.ijbiomac.2022.07.216] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 01/16/2023]
Abstract
Herein, we report the synthesis and characterization of gelatin/κ-carrageenan crosslinked polyacrylic acid hydrogel (GT-CAG-cl-polyAA) and graphene oxide incorporated hydrogel nanocomposite (GOHNC) through a free radical crosslinking pathway. Under optimized reaction conditions, GT-CAG-cl-polyAA displayed 486 % maximum swelling percentage. TEM image depicted wrinkled silk veil wave-type surface morphology of graphene oxide (GO), whereas, the SEM analysis indicated the porous nature of the GT-CAG-cl-polyAA and GOHNC capable of accumulating a large number of water/dye molecules. GT-CAG-cl-polyAA exhibited 96.11 % and 82.16 % dye removal potential for the adsorption of methylene blue (MB) and coomassie brilliant blue (CB), respectively under optimized conditions. GOHNC enhanced the % dye removal efficiency (98.39 % for MB and 94.50 % for CB). The maximum adsorption capacity of GOHNC for the removal of CB and MB was 312.7 mg/g and 94.9 mg/g, respectively. The adsorption of CB and MB exhibited best fitting with Flory-Huggins adsorption isotherms data. The negative values of ΔG° and positive values of ΔS° which were obtained from the adsorption isotherm plot suggested the thermodynamic feasibility of the adsorption. Also, the samples were reusable for up to five consecutive cycles without any degradation and hence suggested a considerable pathway for the separation of textile dyes.
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Affiliation(s)
- Amit Kumar Sharma
- School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P. 175075, India
| | - Ankita Dhiman
- School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P. 175075, India
| | - Amit Kumar Nayak
- School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P. 175075, India
| | - Rishabh Mishra
- School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P. 175075, India
| | - Garima Agrawal
- School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P. 175075, India.
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43
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Shelke BN, Jopale MK, Kategaonkar AH. Exploration of biomass waste as low cost adsorbents for removal of methylene blue dye: A review. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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44
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Sulfonated graphene oxide impregnated cellulose acetate floated beads for adsorption of methylene blue dye: optimization using response surface methodology. Sci Rep 2022; 12:9339. [PMID: 35660768 PMCID: PMC9167308 DOI: 10.1038/s41598-022-13105-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/20/2022] [Indexed: 12/04/2022] Open
Abstract
New multi-featured adsorbent beads were fabricated through impregnation of sulfonated graphene (SGO) oxide into cellulose acetate (CA) beads for fast adsorption of cationic methylene blue (MB) dye. The formulated SGO@CA composite beads were thoroughly characterized by several tools including FTIR, TGA, SEM, XRD, XPS and zeta potential. The optimal levels of the most significant identified variables affecting the adsorption process were sequential determined by the response surface methodology (RSM) using Plackett–Burman and Box–Behnken designs. The gained results denoted that the surface of SGO@CA beads displayed the higher negative charges (− 42.2 mV) compared to − 35.7 and − 38.7 mV for pristine CA and SGO, respectively. In addition, the floated SGO@CA beads demonstrated excellent floating property, fast adsorption and easy separation. The adsorption performance was accomplished rapidly, since the adsorption equilibrium was closely gotten within 30 min. Furthermore, the adsorption capacity was greatly improved with increasing SGO content from 10 to 30%. The obtained data were followed the pseudo-second order kinetic model and agreed with Langmuir adsorption isotherm model with a maximum adsorption capacity reached 234.74 mg g−1. The thermodynamic studies designated the spontaneity and endothermic nature of MB dye adsorption. Besides, the floated beads exposed acceptable adsorption characteristics for six successive reuse cycles, in addition to their better adsorption selectivity towards MB dye compared to cationic crystal violet and anionic Congo red dyes. These findings assume that the formulated SGO@CA floated beads could be used effectively as highly efficient, easy separable and reusable adsorbents for the fast removal of toxic cationic dyes.
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de Paula FDC, Effting L, Arízaga GGC, Giona RM, Tessaro AL, Bezerra FM, Bail A. Spherical mesoporous silica designed for the removal of methylene blue from water under strong acidic conditions. ENVIRONMENTAL TECHNOLOGY 2022; 43:2278-2289. [PMID: 33390095 DOI: 10.1080/09593330.2021.1871662] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
This work proposes a novel technology for environmental remediation based on mesoporous silica spheres, which were successfully synthesized by the solvothermal method using the cetyltrimethylammonium bromide as a structuring agent. The adsorbent was designed to remove cationic dyes at strong acidic conditions. The surface was modified by a careful thermal treatment aiming at the condensation of silanol to siloxane groups. The adsorbent was characterized by XRD, SEM, FTIR, N2 adsorption/desorption and the equilibrium technique to determine the pHpzc. The kinetic of the adsorption followed a pseudo-second-order model and the process was ruled by physical forces. The isotherms were fitted to Freundlich and Temkin models, indicating that the physisorption occurred with multilayer formation, with the interaction adsorbate-adsorbate being relevant to the whole process. The adsorption capacity was approximately 60 mg g-1 and the adsorbents performance in the fast-contact system showed removal of 65%wt. of a 93 mg L-1 methylene blue (MB) solution in a single application.
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Affiliation(s)
- Felipe do Casal de Paula
- Grupo de Química de Materiais e Tecnologias Sustentáveis (GQMATS), Universidade Tecnológica Federal do Paraná (UTFPR), Londrina, Brazil
| | - Luciane Effting
- Departamento de Química, Universidade Estadual de Londrina (UEL), Londrina, Brazil
| | | | - Renata Mello Giona
- LaMaFi - Laboratório de Materiais e Fenômenos Interfaciais, Universidade Tecnológica Federal do Paraná (UTFPR), Medianeira, Brazil
| | - Andre Luiz Tessaro
- Grupo de Química de Materiais e Tecnologias Sustentáveis (GQMATS), Universidade Tecnológica Federal do Paraná (UTFPR), Londrina, Brazil
- Programa de Pós-Graduação em Engenharia Ambiental (PPGEA), Universidade Tecnológica Federal do Paraná, Apucarana, Brazil
| | - Fabricio Maestá Bezerra
- Grupo de Química de Materiais e Tecnologias Sustentáveis (GQMATS), Universidade Tecnológica Federal do Paraná (UTFPR), Londrina, Brazil
- Programa de Pós-Graduação em Engenharia Ambiental (PPGEA), Universidade Tecnológica Federal do Paraná, Apucarana, Brazil
| | - Alesandro Bail
- Grupo de Química de Materiais e Tecnologias Sustentáveis (GQMATS), Universidade Tecnológica Federal do Paraná (UTFPR), Londrina, Brazil
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Removal of Methylene Blue by Metal Oxides Supported by Oily Sludge Pyrolysis Residues. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
As a typical pollutant, methylene blue poses a serious threat to the environment and human health. Oily sludge pyrolysis residue loaded with metal oxides could be used to prepare composite materials, which is not only an effective way to treat oily sludge, but also a possible method to treat methylene blue pollutants. In this paper, composite materials (AC-CuO, AC-ZnO, and AC-TiO2) were prepared by oily sludge pyrolysis residue-loaded CuO, ZnO, and TiO2 directly, and characterized by XRD, SEM, EDS, BET, FT-IR, and XPS, and it was shown that the metal oxides were successfully supported on the pyrolysis residue. Then, the composite materials were applied to the removal of methylene blue solution. The removal effect of composite materials on methylene blue with respect to the impregnation time, impregnation ratio and dosage, and the contact time and number of regenerations were investigated, and the removal parameters were optimized by response surface methodology. The removal process for methylene blue was described by applying Lagergren, McKay, Langmuir isotherm, Freundlish isotherm and intraparticle diffusion models. According to the response surface methodology and the main factors affecting the removal effect of methylene blue, the results indicate that the removal effect of 5 mg/L methylene blue could reach 95.28%, 94.95%, and 96.96%, respectively, and the corresponding removal capacities were 4.76, 4.75, and 4.85 mg/g. In addition, kinetic studies showed that the removal process of methylene blue was mainly constituted by chemical adsorption. The intraparticle diffusion showed that the removal of methylene blue may be controlled by both liquid film diffusion and intraparticle diffusion. The isotherms showed that the adsorption sites of composites for methylene blue were uniformly distributed and had the same affinity. Furthermore, regeneration experiments showed that the composite materials were stable and had relatively reusability.
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47
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Setthaya N, Pimraksa K, Damrongwiriyanupap N, Panias D, Mekrattanachai P, Chindawong C. Modified zeolite from metakaolin and fly ash as efficient adsorbent for cationic methylene blue dye removal. CHEM ENG COMMUN 2022. [DOI: 10.1080/00986445.2022.2067748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Kedsarin Pimraksa
- Department of Industrial Chemistry, Chiang Mai University, Chiang Mai, Thailand
| | | | - Dimitrios Panias
- School of Mining and Metallurgical Engineering, National Technical University of Athens, Athens, Greece
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Biodegradation of Methylene Blue Using a Novel Lignin Peroxidase Enzyme Producing Bacteria, Named Bacillus sp. React3, as a Promising Candidate for Dye-Contaminated Wastewater Treatment. FERMENTATION 2022. [DOI: 10.3390/fermentation8050190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The emission of methylene blue (MB) from common industries causes risks to human health by making clean drinking water unavailable and hampering environmental safety. A biological approach offering a more cost-efficient and sustainable alternative solution has been studied and demonstrated to be significantly effective for the removal of MB using promising microbial isolates. Therefore, this study targeted bacterial candidates, namely Bacillus sp. React3, isolated from soil with the potential to decolorize MB. The phenogenic identification of strain React3 was performed by 16S rRNA sequencing, showing a similarity of 98.86% to Bacillus velezensis CR-502T. The ability of this bacterial strain to decolorize MB was proven through both the lignin peroxidase efficiency and accumulation in the biomass of the living cells. MB removal was determined by the reduction in the maximum absorption at a wavelength of 665 nm, which was observed to be up to 99.5% after 48 h of incubation. The optimal conditions for the MB degradation of strain React3 were pH 7, 35 °C, static, 4% inoculum, and 1000 mg/L of MB, with tryptone as a carbon source and yeast extract as a nitrogen source.
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Ali H, Ismail AM. Honeycomb-like V2O5 Based Films: Synthesis, Structural, Thermal, and Optical Properties for Environmental Applications. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02331-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractIn the present study, new composite films consisting of hierarchical nanobelt V2O5 and polymer mixture were prepared via a simple casting method. The incorporation of 30 wt.% of V2O5 into the polymer matrix yielded a honeycomb like structure with abundant micro-voids (5.5 μm), higher roughness average by 45.8%, and a higher root mean square roughness by 52%, which are beneficial for the enhancement of active surface area for dye adsorption. Furthermore, optical property studies have shown that the incorporation of V2O5 has made the nanocomposite film a suitable UV–visible light-sensitive material, and thus the application of films can be expanded towards photocatalytic degradation of various toxic pollutants such as nitrophenol, Cr(VI), antibiotects, and so on. Finally, the composite film exhibited enhanced thermostability in comparison to unmodified film, as confirmed by TGA and DSC analysis. The optimal film showed 96.3% removal efficiency and 27.02 mg/g adsorption capacity. The dye sorption performance of V2O5 based films is studied at various times, dosages, and initial dye concentrations. The experimental data more closely fit the Langmuir isotherm model (R2 = 0.997) than the Freundlich, Temkin, and Dubinin–Radushkevich isotherm models, demonstrating a monolayer adsorption mechanism. The MB adsorption process on V2O5 film was controlled by the chemical adsorption step, which was evidenced by the good-fitting of kinetic adsorption results to the pseudo second order model (R2 = 0.991). The obtained results indicated that the V2O5 based films in this work are hopeful candidates for environmental applications.
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Taguchi L25 (54) Approach for Methylene Blue Removal by Polyethylene Terephthalate Nanofiber-Multi-Walled Carbon Nanotube Composite. WATER 2022. [DOI: 10.3390/w14081242] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A membrane composed of polyethylene terephthalate nanofiber and multi-walled carbon nanotubes (PET NF-MWCNTs) composite is used to adsorb methylene blue (MB) dye from an aqueous solution. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction techniques are employed to study the surface properties of the adsorbent. Several parameters affecting dye adsorption (pH, MB dye initial concentration, PET NF-MWCNTs dose, and contact time) are optimized for optimal removal efficiency (R, %) by using the Taguchi L25 (54) Orthogonal Array approach. According to the ANOVA results, pH has the highest contributing percentage at 71.01%, suggesting it has the most significant impact on removal efficiency. The adsorbent dose is the second most affected (12.08%), followed by the MB dye initial concentration of 5.91%, and the least affected is the contact time (1.81%). In addition, experimental findings confirm that the Langmuir isotherm is well-fitted, suggesting a monolayer capping of MB dye on the PET-NF-MWCNT surface with a maximum adsorption capacity of 7.047 mg g−1. Also, the kinetic results are well-suited to the pseudo-second-order model. There is a good agreement between the calculated (qe) and experimental values for the pseudo-second-order kinetic model.
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