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Dada AO, Inyinbor AA, Tokula BE, Bayode AA, Obayomi KS, Ajanaku CO, Adekola FA, Ajanaku KO, Pal U. Zinc oxide decorated plantain peel activated carbon for adsorption of cationic malachite green dye: Mechanistic, kinetics and thermodynamics modeling. ENVIRONMENTAL RESEARCH 2024; 252:119046. [PMID: 38704004 DOI: 10.1016/j.envres.2024.119046] [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: 02/10/2024] [Revised: 03/19/2024] [Accepted: 04/28/2024] [Indexed: 05/06/2024]
Abstract
Reports have shown that malachite green (MG) dye causes various hormonal disruptions and health hazards, hence, its removal from water has become a top priority. In this work, zinc oxide decorated plantain peels activated carbon (ZnO@PPAC) was developed via a hydrothermal approach. Physicochemical characterization of the ZnO@PPAC nanocomposite with a 205.2 m2/g surface area, porosity of 614.68 and dominance of acidic sites from Boehm study established the potency of ZnO@PPAC. Spectroscopic characterization of ZnO@PPAC vis-a-viz thermal gravimetric analyses (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Powdered X-ray Diffraction (PXRD), Scanning Electron Microscopy and High Resolution - Transmission Electron Microscopy (HR-TEM) depict the thermal stability via phase transition, functional group, crystallinity with interspatial spacing, morphology and spherical and nano-rod-like shape of the ZnO@PPAC heterostructure with electron mapping respectively. Adsorption of malachite green dye onto ZnO@PPAC nanocomposite was influenced by different operational parameters. Equilibrium data across the three temperatures (303, 313, and 323 K) were most favorably described by Freundlich indicating the ZnO@PPAC heterogeneous nature. 77.517 mg/g monolayer capacity of ZnO@PPAC was superior to other adsorbents compared. Pore-diffusion predominated in the mechanism and kinetic data best fit the pseudo-second-order. Thermodynamics studies showed the feasible, endothermic, and spontaneous nature of the sequestration. The ZnO@PPAC was therefore shown to be a sustainable and efficient material for MG dye uptake and hereby endorsed for the treatment of industrial effluent.
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Affiliation(s)
- Adewumi Oluwasogo Dada
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India; Landmark University Sustainable Development Goal 6: Clean Water and Sanitation, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 7: Affordable and Clean Energy, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 11: Sustainable Cities and Communities, P.M.B.1001, Omu-Aran, Kwara, Nigeria.
| | - Abosede Adejumoke Inyinbor
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 6: Clean Water and Sanitation, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 11: Sustainable Cities and Communities, P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Blessing Enyojo Tokula
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 6: Clean Water and Sanitation, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 11: Sustainable Cities and Communities, P.M.B.1001, Omu-Aran, Kwara, Nigeria.
| | - Abiodun Ajibola Bayode
- Department of Chemical Sciences, Redeemer's University, P.M.B 230, Ede, Osun State, Nigeria
| | - Kehinde Shola Obayomi
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia; Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee, VIC, 3030, Australia
| | - Christiana Oluwatoyin Ajanaku
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria; Landmark University Sustainable Development Goal 6: Clean Water and Sanitation, P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Folahan Amoo Adekola
- Department of Industrial Chemistry, University of Ilorin, P.M.B. 1515, Ilorin, Kwara State, Nigeria
| | - Kolawole Oluseyi Ajanaku
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Ujjwal Pal
- Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.
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Chen Z, Tian X, Hou J, Li Z. Adsorption performance of mineral-carbon adsorbents derived from coal gasification fine ash: Prepared via low-temperature alkali fusion method. ENVIRONMENTAL RESEARCH 2024; 248:118311. [PMID: 38278511 DOI: 10.1016/j.envres.2024.118311] [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: 10/29/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 01/28/2024]
Abstract
To address the solid waste challenges associated with coal gasification fine ash, this study conducted a low-temperature alkali fusion de-ashing treatment to transform coal gasification fine ash into mineral-carbon adsorbent. The preparation process was simplified without grinding, carbonization and high-temperature (500-800 °C) activation treatment. The results demonstrate a positive linear correlation between the ash removal rate of the samples (measured during the preparation process, i.e., low-temperature alkaline fusion treatment of coal gasification fine ash) and their maximum equilibrium adsorption capacity for methylene blue. For the samples with an ash removal rate of 95.71 %, which exhibit a maximum adsorption capacity of 161.36 mg/g for methylene blue. The adsorption behavior of methylene blue on mineral-carbon adsorbent was a monolayer adsorption on the surface of homogeneous medium, involving both physical and chemical adsorption. The main adsorb rate-controlling steps for the samples with ash removal rates of 27.91-59.33 % and 95.71 % were the intra particle diffusion process and the liquid film diffusion process, respectively. The adsorption mechanism of methylene blue on the surface of mineral-carbon adsorbent involved electrostatic attraction and hydrogen bonding. The aforementioned results demonstrated the potential of coal gasification fine ash as an adsorbent material, providing new options for promoting the resource utilization and high-value applications of coal gasification fine ash.
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Affiliation(s)
- Zhichao Chen
- School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, China; Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, 450046, China.
| | - Xiaodong Tian
- School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, China; Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, 450046, China.
| | - Jian Hou
- School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, China; Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, 450046, China.
| | - Zhengqi Li
- School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, China; Zhengzhou Research Institute of Harbin Institute of Technology, Zhengzhou, 450046, China.
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Dubey S, Mishra RK, Kaya S, Rene ER, Giri BS, Sharma YC. Microalgae derived honeycomb structured mesoporous diatom biosilica for adsorption of malachite green: Process optimization and modeling. CHEMOSPHERE 2024; 355:141696. [PMID: 38499077 DOI: 10.1016/j.chemosphere.2024.141696] [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: 06/20/2023] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024]
Abstract
The present study investigated the removal of malachite green dye from aquifers by means of microalgae-derived mesoporous diatom biosilica. The various process variables (dye concentration, pH, and adsorbent dose) influencing the removal of the dye were optimized and their interactive effects on the removal efficiency were explored by response surface methodology. The pH of the solution (pH = 5.26) was found to be the most dominating among other tested variables. The Langmuir isotherm (R2 = 0.995) best fitted the equilibrium adsorption data with an adsorption capacity of 40.7 mg/g at 323 K and pseudo-second-order model (R2 = 0.983) best elucidated the rate of dye removal (10.6 mg/g). The underlying mechanism of adsorption was investigated by Weber-Morris and Boyd models and results revealed that the film diffusion governed the overall adsorption process. The theoretical investigations on the dye structure using DFT-based chemical reactivity descriptors indicated that malachite green cations are electrophilic, reactive and possess the ability to accept electrons, and are strongly adsorbed on the surface of diatom biosilica. Also, the Fukui function analysis proposed the favorable adsorption sites available on the adsorbent surface.
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Affiliation(s)
- Shikha Dubey
- Department of Chemistry, School of Sciences, Hemvati Nandan Bahuguna Garhwal University, Srinagar (Garhwal) 246174, India; Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India.
| | - Rakesh K Mishra
- Department of Chemistry, National Institute of Technology, Uttarakhand (NITUK), Srinagar (Garhwal) 246174, India
| | - Savaş Kaya
- Department of Pharmacy, Health Services Vocational School, Sivas Cumhuriyet University, Sivas 58140, Turkey
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, Delft 2601DA, the Netherlands
| | - Balendu Shekher Giri
- Sustainability Cluster, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand 248007, India
| | - Yogesh C Sharma
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
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Hegde V, Uthappa UT, Mane P, Ji SM, Suneetha M, Wang B, Altalhi T, Subrahmanya TM, Kurkuri MD. Design of low-cost natural casein biopolymer based adsorbent for efficient adsorption of multiple anionic dyes and diclofenac sodium from aqueous solutions. CHEMOSPHERE 2024; 353:141571. [PMID: 38423148 DOI: 10.1016/j.chemosphere.2024.141571] [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: 09/18/2023] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
The treatment of various organic pollutants from industrial wastewater using bio-based materials has gained significant attention owing to their excellent properties such as low-cost, eco-friendly, non-toxic, and biodegradability. In this perspective, casein (Cn), a protein-based biopolymer, was extracted from the cow milk as a low-cost adsorbent, and the adsorption performances were determined for the pristine Cn. The adsorbent was employed for the removal of two different classes of targeted pollutant anionic dyes such as Congo red (CR), Eriochrome Black T (EBT), Eosin Y (EY), and pharmaceutical waste i.e., diclofenac sodium (DS) and displayed better adsorption performances with the maximum adsorption capacity of 85.54, 31.72, 70.42 and 358.42 mg g-1 respectively. The interactions between Cn and pollutants are mainly ascribed to the electrostatic interaction, hydrogen bonding, hydrophobic interaction, and π-π interactions. Furthermore, to validate with realistic application the adsorbent proved with an excellent removal efficiency of 91.43% for fabric whitener i.e., Ujala Supreme®. These obtained results suggest that the Cn could be the potential adsorbent to effectively eliminate toxic pollutants from the aqueous solutions.
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Affiliation(s)
- Vinayak Hegde
- Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru-562112, Karnataka, India
| | - U T Uthappa
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, China.
| | - PadmajaV Mane
- Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru-562112, Karnataka, India
| | - Seong Min Ji
- School of Chemical Engineering, Yeungnam University, 280, Daehak-ro, Gyeongsan 38541, Republic of Korea
| | - Maduru Suneetha
- School of Chemical Engineering, Yeungnam University, 280, Daehak-ro, Gyeongsan 38541, Republic of Korea
| | - Ben Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, China.
| | - Tariq Altalhi
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - T M Subrahmanya
- Advanced Membrane Materials Research Center, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Mahaveer D Kurkuri
- Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru-562112, Karnataka, India.
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