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Mahmoud AED, Ali R, Fawzy M. Insights into levofloxacin adsorption with machine learning models using nano-composite hydrochars. CHEMOSPHERE 2024; 355:141746. [PMID: 38522673 DOI: 10.1016/j.chemosphere.2024.141746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 02/08/2024] [Accepted: 03/16/2024] [Indexed: 03/26/2024]
Abstract
Hydrothermal carbonization was applied to taro peel wastes to produce hydrochars using a facile and environmentally friendly process. Four different entities were prepared: hydrochar (TPh), phosphoric-activated hydrochar (P-TPh), and silver@hydrochars (Ag@TPh, Ag@P-TPh). The elemental compositions of the single and composite hydrochars were confirmed by EDX. Among the produced hydrochars, the morphology of the Ag@hydrochar composites demonstrated more wrinkled structure, and Ag nanoparticles decorated the surface. The optimal experimental conditions for levofloxacin adsorption were determined to be a contact time of 45 min, hydrochar dose of 0.15 g L-1, and pH of 7. The best adsorption performances were assigned to Ag@hydrochars. Two machine learning models were applied to predict the levofloxacin adsorption efficiency of the Ag@hydrochars. A central composite design (CCD) and a 3-10-1 artificial neural network (ANN) model were developed to estimate the removal performance of levofloxacin using Levenberg-Marquardt backpropagation algorithm based on correlation and error analysis of the adopted training functions. Furthermore, the ANN sensitivity analysis revealed the order of the relative importance variable as initial concentration> hydrochar dose> pH. The predicted values of the CCD and ANN models fitted the experimental results with R2> 0.989. Therefore, the applied models were effective in predicting levofloxacin removal under different operating conditions. This work provides an open option for the sustainable management of food industry wastes and the possibility of waste valorization to effective hydrochar composites to be applied in water treatment processes.
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Affiliation(s)
- Alaa El Din Mahmoud
- Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt; Green Technology Group, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt.
| | - Radwa Ali
- Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt; Green Technology Group, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
| | - Manal Fawzy
- Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt; Green Technology Group, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt; National Egyptian Biotechnology Experts Network, National Egyptian Academy for Scientific Research and Technology, Cairo, Egypt
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2
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Jacob JAE, Antony R, Ivan Jebakumar DS. Synergistic effect of silver nanoparticle-embedded calcite-rich biochar derived from Tamarindus indica bark on 4-nitrophenol reduction. CHEMOSPHERE 2024; 349:140765. [PMID: 38006917 DOI: 10.1016/j.chemosphere.2023.140765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/27/2023] [Accepted: 11/17/2023] [Indexed: 11/27/2023]
Abstract
Calcite-biochar composites are attractive materials with outstanding adsorption capabilities for removing various recalcitrant contaminants in wastewater treatment, however, the complexity of their synthesis limits their practical applications. In this work, we have prepared calcite-rich biochar (Ca-BC) from a single precursor (Tamarindus indica bark), which simplifies the synthetic route for preparing calcite-biochar composite. The as-synthesized composite is utilized to make a heterogeneous catalytic system containing the supported silver nanoparticles (Ag@Ca-BC) formed by the reduction of Ag+ ions on the surface of the composite. The formation of Ag@Ca-BC is confirmed by various characterization techniques such as PXRD, FT-IR, UV-Vis, cyclic voltammetry, impedance measurement, SEM, and TEM analyses. Especially, the TEM analysis confirms the presence of Ag nanoparticles with size ranging between 20 and 50 nm on the surface of Ca-BC composite. The nano-catalyst Ag@Ca-BC efficiently promotes the conversion of 4-nitrophenol to 4-aminophenol using NaBH4 as the reductant in water within 24 minutes at room temperature, suggesting that Ag@Ca-BC can be an efficient catalyst to remove nitroaromatics from the industrial effluents. The straightforward synthesis of Ca-BC from a single precursor along with its utility as a catalytic support presents a compelling proposition for application in the field of materials synthesis, catalysis, and green chemistry.
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Affiliation(s)
- J Amala Ebi Jacob
- Postgraduate Department of Chemistry, St. John's College, Palayamkottai, 627002, Tamil Nadu, India
| | - R Antony
- Department of Chemistry, Mepco Schlenk Engineering College (Autonomous), Sivakasi, 626005, Tamil Nadu, India.
| | - D S Ivan Jebakumar
- Postgraduate Department of Chemistry, St. John's College, Palayamkottai, 627002, Tamil Nadu, India.
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Behera M, Alqahtani FO, Chakrabortty S, Nayak J, Banerjee S, Kumar R, Jeon BH, Tripathy SK. CuO/TiO 2/ZnO NPs Anchored Hydrogen Exfoliated Graphene: To Comprehend the Role of Graphene in Catalytic Reduction of p-Nitrophenol. ACS OMEGA 2023; 8:42164-42176. [PMID: 38024706 PMCID: PMC10652271 DOI: 10.1021/acsomega.3c03859] [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: 06/01/2023] [Revised: 09/15/2023] [Accepted: 09/27/2023] [Indexed: 12/01/2023]
Abstract
The present study deals with sonochemically in situ synthesis of a novel functional catalyst using hydrogen exfoliated graphene (HEG) supported titanium dioxide (TiO2) and copper sulfate (CuSO4) doped with zinc oxide (ZnO) (abbreviated as Ti/Cu/Zn-HEG). The synthesis of the Ti/Cu/Zn-HEG nanocomposite (NCs) catalyst was confirmed through its characterizations by XRD, SEM-EDX, TEM, XPS, FTIR, and BET methods. It was assessed for catalytic conversion of a model aromatic compound para-nitrophenol (p-NP) in an aqueous solution. The p-NP is a nitroaromatic compound that has a toxic and mutagenic effect. Its removal from the water system is necessary to protect the environment and living being. The newly synthesized Ti/Cu/Zn-HEG NCs were applied for their higher stability and catalytic activity as a potential candidate for reducing p-NP in practice. The operating parameters, such as p-NP concentration, catalyst dosage, and operating time were optimized for 150 ppm, 400 ppm, and 10 min through response surface methodology (RSM) in Design-Expert software to obtain the maximum reduction p-NP up to 98.4% at its normal pH of 7.1 against the controls (using HEG, Ti/Cu-HEG, and Zn-HEG). Analysis of variance of the response suggested the regression equation to be significant for the process with a major impact on catalyst concentration and operating time. The model prediction data (from RSM) and experimental data were corroborated well as reflected through model's low relative error (RE < 0.10), high regression coefficient (R2 > 0.97), and Willmott d-index (dwill-index > 0.95) values.
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Affiliation(s)
- Meerambika Behera
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Fatimah Othman Alqahtani
- Department
of Chemistry, College of Science, King Faisal
University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia
| | - Sankha Chakrabortty
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Jayato Nayak
- Centre
for Life Science, Mahindra University, Bahadurpally, Jeedimetla, Hyderabad, Telangana 500043, India
| | - Shirsendu Banerjee
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Ramesh Kumar
- Department
of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic
of Korea
| | - Byong-Hun Jeon
- Department
of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic
of Korea
| | - Suraj K Tripathy
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
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Bhandari G, Gangola S, Dhasmana A, Rajput V, Gupta S, Malik S, Slama P. Nano-biochar: recent progress, challenges, and opportunities for sustainable environmental remediation. Front Microbiol 2023; 14:1214870. [PMID: 37547682 PMCID: PMC10400457 DOI: 10.3389/fmicb.2023.1214870] [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: 04/30/2023] [Accepted: 06/28/2023] [Indexed: 08/08/2023] Open
Abstract
Biochar is a carbonaceous by-product of lignocellulosic biomass developed by various thermochemical processes. Biochar can be transformed into "nano-biochar" by size reduction to nano-meters level. Nano-biochar presents remarkable physico-chemical behavior in comparison to macro-biochar including; higher stability, unique nanostructure, higher catalytic ability, larger specific surface area, higher porosity, improved surface functionality, and surface active sites. Nano-biochar efficiently regulates the transport and absorption of vital micro-and macro-nutrients, in addition to toxic contaminants (heavy metals, pesticides, antibiotics). However an extensive understanding of the recent nano-biochar studies is essential for large scale implementations, including development, physico-chemical properties and targeted use. Nano-biochar toxicity on different organisms and its in-direct effect on humans is an important issue of concern and needs to be extensively evaluated for large scale applications. This review provides a detailed insight on nanobiochar research for (1) development methodologies, (2) compositions and properties, (3) characterization methods, (4) potentiality as emerging sorbent, photocatalyst, enzyme carrier for environmental application, and (5) environmental concerns.
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Affiliation(s)
- Geeta Bhandari
- Department of Biosciences, Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Saurabh Gangola
- School of Agriculture, Graphic Era Hill University, Bhimtal Campus, Uttarakhand, India
| | - Archna Dhasmana
- Department of Biosciences, Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Vishal Rajput
- Department of Biosciences, Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Sanjay Gupta
- Department of Biosciences, Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand, India
- Guru Nanak College of Pharmaceutical Sciences, Dehradun, Uttarakhand, India
| | - Petr Slama
- Laboratory of Animal Immunology and Biotechnology, Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
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A Review on Chemoselective Reduction of Nitroarenes for Wastewater Remediation Using Biochar Supported Metal Catalysts: Kinetic and Mechanistic Studies. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00534-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Oh S, Yu H, Han Y, Jeong HS, Hong HJ. 3-D porous cellulose nanofibril aerogels with a controllable copper nanoparticle loading as a highly efficient non-noble-metal catalyst for 4-nitrophenol reduction. CHEMOSPHERE 2022; 301:134518. [PMID: 35395257 DOI: 10.1016/j.chemosphere.2022.134518] [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: 01/20/2022] [Revised: 03/21/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Nitrophenols(NPs) are highly toxic compounds that occur in various industrial effluents. Herein, we investigated Cu nanoparticle-loaded cellulose nanofibril (CNF/PEI-Cu) aerogels as a catalyst for degrading 4-nitrophenol (4NP) in the wastewater. Non-noble metal based low-cost catalyst material and easily scalable preparation method make CNF/PEI-Cu aerogel as an appropriate catalyst for practical application in 4NP wastewater treatment. Our strategy to improve the loading amount of homogeneously distributed Cu nanoparticles was to functionalize a CNF aerogel using polyethylene imine (PEI), which can bind Cu2+ ions. Porous CNF aerogels with homogenously distributed 20-40 nm Cu nanoparticles were obtained by adsorbing Cu2+ ions and chemically reducing them to Cu metal. The FTIR, XRD, SEM, XPS and ICP-OES analysis were used to confirm the in-situ formation of Cu nanoparticles. In the presence of the CNF/PEI-Cu aerogels, 4NP was effectively reduced to 4-aminophenol (4AP) without loss of the Cu nanoparticles. The activation energy (Ea) and reaction rate constant (kapp) of the catalytic 4NP reduction reaction by the CNF/PEI2-Cu aerogels were calculated to be Ea = 39.56 kJ mol-1 and kapp = 0.770 min-1, respectively. The Ea is similar or even smaller than the Ea values of the corresponding reactions involving noble-metal catalysts, demonstrating that the CNF/PEI-Cu aerogels developed in the present study have strong potential as practical and economical catalysts.
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Affiliation(s)
- Suryun Oh
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Chemdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Hayoung Yu
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Yosep Han
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Hyeon Su Jeong
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Hye-Jin Hong
- Department of Environmental Engineering, Chungbuk National University, Chungdae-ro 1, Seowon-Gu, Cheongju, Chungbuk, 28644, Republic of Korea.
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Shabana N, Arjun AM, Rasheed PA. Exploring the catalytic activity of Nb 4C 3T x MXene towards the degradation of nitro compounds and organic dyes by in situ decoration of palladium nanoparticles. NEW J CHEM 2022. [DOI: 10.1039/d2nj02315f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the catalytic activity of Nb4C3Tx based composites towards the catalytic reduction of nitro compounds and organic dyes for the first time.
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Affiliation(s)
- Neermunda Shabana
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala, 678 557, India
| | - Ajith Mohan Arjun
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala, 678 557, India
| | - P. Abdul Rasheed
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala, 678 557, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala, 678 557, India
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