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Kumar N, Vach M, Saini VK, Zitkova A. Co-pyrolysis of orange peel and eggshell for oxygenated rich composite: Process optimization with response surface methodology. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119786. [PMID: 38109824 DOI: 10.1016/j.jenvman.2023.119786] [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: 07/07/2023] [Revised: 11/06/2023] [Accepted: 12/03/2023] [Indexed: 12/20/2023]
Abstract
Co-pyrolysis of orange peel and chicken eggshell was performed for the synthesis of the composite, a co-pyrolysis technique used to promote natural fabrication and to allow the raw material elemental combination effect and the preparatory conditions such as pyrolysis temperature, residence time, and eggshell/orange peel mixing ratio, to be optimized with the response surface methodology through Box-Behnken Design(BBD). BBD involved a randomized series of 17 experimental runs, and the best optimal conditions were found with a pyrolysis temperature of 300 °C, a residence time of 1 h, and 0.5 as the mixing ratio. These conditions gave a maximum adsorption capacity of 167 mg/g for removal of the modal pollutant methylene blue. FTIR spectra of the composite showed new functional peaks of oxygenated groups, at two different bands. XRD confirmed an amorphous surface with inorganic component peaks, while SEM-EDS revealed rich defects sites along with an enhanced percentage of oxygen elements on the surface; the surface area was enhanced from 1 m2 with unmodified peel to 64 m2 with composite. The adsorption behavior of the composite was studied for dye removal and the adsorption behavior was well explained by the Langmuir isotherm model.
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Affiliation(s)
- Nayan Kumar
- Department of Water Resources and Environmental Modelling, Czech University of Life Sciences, Prague, Czech Republic.
| | - Marek Vach
- Department of Water Resources and Environmental Modelling, Czech University of Life Sciences, Prague, Czech Republic
| | - Vipin Kumar Saini
- School of Environment & Natural Resources, Doon University, Dehradun, Uttarakhand, 248001, India
| | - Andrea Zitkova
- Departmental of Environmental Geoscience, Czech University of Life Sciences, Prague, Czech Republic
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2
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Mendoza-Gomora GJ, Gutierrez-Segura E, Solache-Rios M, López-Téllez G, Garcia-Fabila MM. Removal of tetracycline by natural and iron-modified orange peel from aqueous solutions: processes in batch, column, and mechanism. ENVIRONMENTAL TECHNOLOGY 2023:1-14. [PMID: 37970827 DOI: 10.1080/09593330.2023.2283785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/08/2023] [Indexed: 11/19/2023]
Abstract
Natural (OP) and iron modified orange peel (Fe-OP) were used for the removal of tetracycline from aqueous solutions in batch and fixed bed column systems. The adsorbents were characterized by infrared spectroscopy (IR) and the morphologies of the surfaces before and after tetracycline removal were determined by scanning electron microscope and the elemental analysis was performed by X-ray dispersive spectroscopy (EDS). The kinetic behaviour showed that the equilibrium was reached in 24 and 10 h for OP and Fe-OP respectively, the data were adjusted to both the pseudo second order and intraparticle diffusion models which indicate a chemisorption mechanism and the adsorption process is controlled by the intraparticle diffusion process. The isotherms showed that the adsorption capacity was eight times higher for Fe-OP than OP and the data were best fitted to the Freundlich model indicating that the materials are heterogeneous. The effect of flow rate, influent concentration and adsorbent mass were determined in the column system. The data were adjusted to the Thomas, Adams-Bohart and Yoon-Nelson models, and the best adjustment of data was with the first one. The adsorption capacities in the column system were about half of those obtained in the batch system. These adsorbents show good properties for the removal of tetracycline from water.
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Affiliation(s)
- G J Mendoza-Gomora
- Facultad de Química, Universidad Autónoma del Estado de México,Toluca Estado de México, México
| | - E Gutierrez-Segura
- Facultad de Química, Universidad Autónoma del Estado de México,Toluca Estado de México, México
| | - M Solache-Rios
- Departamento de Química, Instituto Nacional de Investigaciones Nucleares, Estado de México México
| | - G López-Téllez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM (CCIQS), Toluca Estado de México, México
| | - M M Garcia-Fabila
- Facultad de Química, Universidad Autónoma del Estado de México,Toluca Estado de México, México
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Kebaili M, Djellali S, Drouiche N, Lounici H. New biopolymer from biomass for conditioning and dehydration of sewage sludge: application on the sludge of Bouira WWTP. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66536-66546. [PMID: 35504992 DOI: 10.1007/s11356-022-20559-6] [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: 01/13/2022] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
Sewage treatment plants in Algeria produce huge quantities of sludge expressed in tons annually. This sludge produced is unfortunately contaminated because of the use of synthetic polyelectrolytes. Recently several kinds of research have been carried out on natural flocculants for sludge conditioning, because of several advantages they present such as their renewable source and their non-toxicity. This work aims to evaluate the potential use of protonated pectin extracted from orange waste of N'GAOUS juice factory as an eco-friendly flocculant in the chemical conditioning of sludge. Protonated pectin effectiveness was compared with synthetic cationic anionic and ionic polyelectrolytes (SUPERFLOC 8396, AF400, NF102). In this context, raw sludge samples from Bouira WWTP were tested. Specific resistance to filtration (SRF), cakes dry solid content were analyzed to determine filterability, dewatering capacity of conditioned sludge, and the optimum dose of each conditioner. So that our goal was to obtain greater dryness, which is the case with the addition of protonated pectin and even the addition of Superfloc, which allowed us to obtain dryness of 33.01% and 29.19%, respectively, for the same doses that gave the lowest SRF. Based on the results found and the analysis of the specific resistance to filtration (SRF) and the dryness, and compared with the values observed for the dewatered sludge by the method used in the Bouira WWTP. Band filters (18-22%) and raw sludge (4.8-5.7%).
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Affiliation(s)
- Maya Kebaili
- Centre de recherche Mécanique, Chaab Erssas, Route de Aïn ElBey, BP 73B, Constantine, Algeria
- Laboratory of Materials and Durable Development (M2D), University Akli Mohamed Oulhadj, 10000, Bouira, Bouira, Algeria
| | - Souad Djellali
- Laboratory of Physical-Chemistry of High Polymers, Faculty of Technology, University Ferhat Abbas, Setif 1, 1900, Sétif, Algeria
| | - Nadjib Drouiche
- CRTSE-Division CCPM- N°2, Bd Dr. Frantz FANON, P.O.Box 140, 16038, Alger, Sept Merveilles, Algeria.
| | - Hakim Lounici
- Laboratory of Materials and Durable Development (M2D), University Akli Mohamed Oulhadj, 10000, Bouira, Bouira, Algeria
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El Bouaidi W, Libralato G, Tazart Z, Enaime G, Douma M, Ounas A, Yaacoubi A, Lofrano G, Carotenuto M, Saviano L, Siciliano A, Romano Spica V, Guida M, Loudiki M. Nature-based coagulants for drinking water treatment: An ecotoxicological overview. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2022; 94:e10782. [PMID: 36029154 PMCID: PMC9545364 DOI: 10.1002/wer.10782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
The intensive human activities extensively contaminated water sources making its treatment a problem of paramount importance, especially with the increasing of global population and water scarcity. The application of natural coagulants has become a promising and environmentally friendly alternative to conventional ones. This study was aimed at evaluating the efficiency of four plant extracts namely Agave americana, Carpobrotus acinaciformis, Austrocylindropuntia subulate, and Senicio anteuphorbium as natural coagulants to remove Microcystis aeruginosa cyanobacterium from water. The effects of pH (4, 5, 6, 7, 8 9, and 10) and coagulant dose (5, 10, 15, 20, 25, and 30 mg/L) on the coagulation efficiency were investigated. Results showed that plant-based extracts exhibited high coagulant abilities significantly contributing to the removal of M. aeruginosa cells up to 80% on a case-by-case basis. The ecotoxicity (Daphnia magna, Aliivibrio fischeri, Raphidocelis subcapitata, and Sorghum saccharatum) was absent or presented very slight acute toxicity up to 12.5 mg/L being S. anteuphorbium the least toxic. PRACTITIONER POINTS: Nature-based plant extracts showed removal rates up to 80%. Lower pH and A. subulate and S. anteuphorbium were the most efficient coagulants Toxicity effects were plant extracts-based and dose function. A. subulate and S. anteuphorbium were the least toxic extracts.
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Affiliation(s)
- Widad El Bouaidi
- Laboratory of Water, Biodiversity and Climate Change; Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Department of BiologyCadi Ayyad UniversityMarrakeshMorocco
| | - Giovanni Libralato
- Department of BiologyUniversity of Naples Federico II, Complesso Universitario di Monte Sant'AngeloNaplesItaly
| | - Zakaria Tazart
- Laboratory of Water, Biodiversity and Climate Change; Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Department of BiologyCadi Ayyad UniversityMarrakeshMorocco
| | - Ghizlane Enaime
- Institute of Urban Water Management and Environmental EngineeringRuhr‐Universität BochumBochumGermany
| | - Mountasser Douma
- Polydisciplinary Faculty of Khouribga (FPK)Sultan Moulay Slimane UniversityKhouribgaMorocco
| | - Abdelaziz Ounas
- Laboratory of Applied Organic Chemistry, Faculty of Sciences Semlalia, Department of ChemistryCadi Ayyad UniversityMarrakeshMorocco
| | - Abdelrani Yaacoubi
- Laboratory of Applied Organic Chemistry, Faculty of Sciences Semlalia, Department of ChemistryCadi Ayyad UniversityMarrakeshMorocco
| | - Giusy Lofrano
- Department of Movement, Human and Health SciencesUniversity of Rome Foro ItalicoRomeItaly
| | - Maurizio Carotenuto
- Department of Chemistry and Biology “A. Zambelli”University of SalernoFisciano (SA)Italy
| | - Lorenzo Saviano
- Department of BiologyUniversity of Naples Federico II, Complesso Universitario di Monte Sant'AngeloNaplesItaly
| | - Antonietta Siciliano
- Department of BiologyUniversity of Naples Federico II, Complesso Universitario di Monte Sant'AngeloNaplesItaly
| | - Vincenzo Romano Spica
- Department of Movement, Human and Health SciencesUniversity of Rome Foro ItalicoRomeItaly
| | - Marco Guida
- Department of BiologyUniversity of Naples Federico II, Complesso Universitario di Monte Sant'AngeloNaplesItaly
| | - Mohammed Loudiki
- Laboratory of Water, Biodiversity and Climate Change; Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Department of BiologyCadi Ayyad UniversityMarrakeshMorocco
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El Bouaidi W, Libralato G, Douma M, Ounas A, Yaacoubi A, Lofrano G, Albarano L, Guida M, Loudiki M. A review of plant-based coagulants for turbidity and cyanobacteria blooms removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42601-42615. [PMID: 35384538 PMCID: PMC9148277 DOI: 10.1007/s11356-022-20036-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
In recent years, the proliferation of Harmful Cyanobacterial Blooms (CyanoHABs) has increased with water eutrophication and climate change, impairing human health and the environment in relation to water supply. In drinking water treatment plants (DWTPs), the bio-coagulation based on natural coagulants has been studied as an eco-friendly alternative technology to conventional coagulants for both turbidity and CyanoHABs removal. Plant-based coagulants have demonstrated their coagulation efficiency in turbidity removal, as reported in several papers but its ability in cyanobacterial removal is still limited. This paper mainly reviewed the application of plant-based coagulants in DWTPs, with focus on turbidity removal, including cyanobacterial cells. The future potential uses of these green coagulants to reduce noxious effects of cyanobacterial proliferation are presented. Green coagulants advantages and limitations in DWTPs are reviewed and discussed summarizing more than 10 years of knowledge.
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Affiliation(s)
- Widad El Bouaidi
- Laboratory of Water, Biodiversity and Climate Change; Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Department of Biology, Cadi Ayyad University, Av. Prince My Abdellah, P. O Box 2390, 40000 Marrakesh, Morocco
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, Complesso Universitario Di Monte Sant’Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Mountasser Douma
- Polydisciplinary Faculty of Khouribga (FPK), Sultan Moulay Slimane University, 25000 Khouribga, Morocco
| | - Abdelaziz Ounas
- Laboratory of Applied Organic Chemistry, Faculty of Sciences Semlalia, Department of Chemistry, Cadi Ayyad University, 40000 Marrakesh, Morocco
| | - Abdelrani Yaacoubi
- Laboratory of Applied Organic Chemistry, Faculty of Sciences Semlalia, Department of Chemistry, Cadi Ayyad University, 40000 Marrakesh, Morocco
| | - Giusy Lofrano
- Dipartimento Di Scienze Motorie, Umane E Della Salute, Università Degli Studi Di Roma Foro Italico, Piazza Lauro De Bosis, 15, 00135 Roma, Italy
| | - Luisa Albarano
- Department of Biology, University of Naples Federico II, Complesso Universitario Di Monte Sant’Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Marco Guida
- Department of Biology, University of Naples Federico II, Complesso Universitario Di Monte Sant’Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Mohammed Loudiki
- Laboratory of Water, Biodiversity and Climate Change; Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Department of Biology, Cadi Ayyad University, Av. Prince My Abdellah, P. O Box 2390, 40000 Marrakesh, Morocco
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Giraldo S, Robles I, Godínez LA, Acelas N, Flórez E. Experimental and Theoretical Insights on Methylene Blue Removal from Wastewater Using an Adsorbent Obtained from the Residues of the Orange Industry. Molecules 2021; 26:molecules26154555. [PMID: 34361706 PMCID: PMC8348386 DOI: 10.3390/molecules26154555] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/12/2021] [Accepted: 06/13/2021] [Indexed: 11/23/2022] Open
Abstract
Chemical and thermochemical transformations were performed on orange peel to obtain materials that were characterized and further tested to explore their potential as adsorbents for the removal of methylene blue (MB) from aqueous solutions. The results show the high potential of some of these materials for MB adsorption not only due to the surface area of the resulting substrate but also to the chemistry of the corresponding surface functional groups. Fitting of the kinetic as well as the equilibrium experimental data to different models suggests that a variety of interactions are involved in MB adsorption. The overall capacities for these substrates (larger than 192.31 mg g−1) were found to compare well with those reported for activated carbon and other adsorbents of agro-industrial origin. According to these results and complementary with theoretical study using Density Functional Theory (DFT) approximations, it was found that the most important adsorption mechanisms of MB correspond to: (i) electrostatic interactions, (ii) H-bonding, and (iii) π (MB)–π (biochar) interactions. In view of these findings, it can be concluded that adsorbent materials obtained from orange peel, constitute a good alternative for the removal of MB dye from aqueous solutions.
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Affiliation(s)
- Stephanie Giraldo
- Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín 050026, Colombia;
| | - Irma Robles
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C., Parque Tecnológico Querétaro, Sanfandila, Pedro Escobedo 76703, Querétaro, Mexico; (I.R.); (L.A.G.)
| | - Luis A. Godínez
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C., Parque Tecnológico Querétaro, Sanfandila, Pedro Escobedo 76703, Querétaro, Mexico; (I.R.); (L.A.G.)
| | - Nancy Acelas
- Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín 050026, Colombia;
- Correspondence: (N.A.); (E.F.)
| | - Elizabeth Flórez
- Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín 050026, Colombia;
- Correspondence: (N.A.); (E.F.)
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Orejuela-Escobar LM, Landázuri AC, Goodell B. Second generation biorefining in Ecuador: Circular bioeconomy, zero waste technology, environment and sustainable development: The nexus. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2021. [DOI: 10.1016/j.jobab.2021.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Chua SC, Show PL, Chong FK, Ho YC. Lentil waste as novel natural coagulant for agricultural wastewater treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1833-1847. [PMID: 33201847 DOI: 10.2166/wst.2020.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Increasing agricultural irrigation to counteract a soil moisture deficit has resulted in the production of hazardous agricultural wastewater with high turbidity and chemical oxygen demand (COD). An innovative, sustainable, and effective solution is needed to overcome the pollution and water scarcity issues caused by the agricultural anthropogenic processes. This research focused on a sustainable solution that utilized a waste (broken lentil) as natural coagulant for turbidity and COD removal in agricultural wastewater treatment. The efficiency of the lentil extract (LE), grafted lentil extract (LE-g-DMC) and aluminium sulphate (alum) coagulants was optimized through the response surface methodology. Three-level Box-Behnken design was used to statistically visualize the complex interactions of pH, concentration of coagulants and settling time. LE achieved a significant 99.55% and 79.87% removal of turbidity and COD at pH 4, 88.46 mg/L of LE and 6.9 minutes of settling time, whereas LE-g-DMC achieved 99.83% and 80.32% removal of turbidity and COD at pH 6.7, 63.08 mg/L of LE-g-DMC and 5 minutes of settling time. As compared to alum, LE-g-DMC required approximately 30% less concentration. Moreover, LE and LE-g-DMC also required 75% and 65% less settling time as compared to the alum. Both LE and LE-g-DMC produced flocs with excellent settling ability (5.77 mg/L and 4.48 mL/g) and produced a significant less volume of sludge (10.60 mL/L and 8.23 mL/L) as compared with the alum. The economic analysis and assessments have proven the feasibility of both lentil-based coagulants in agricultural wastewater treatment.
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Affiliation(s)
- Siong-Chin Chua
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia and Centre of Urban Resource Sustainability, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia E-mail:
| | - Pau Loke Show
- Malaysia Campus Department of Chemical and Environmental Engineering, University of Nottingham, Semenyih, Malaysia
| | - Fai-Kait Chong
- Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Yeek-Chia Ho
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia and Centre of Urban Resource Sustainability, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia E-mail:
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Lima JP, Alvarenga G, Goszczynski AC, Rosa GR, Lopes TJ. Batch adsorption of methylene blue dye using Enterolobium contortisiliquum as bioadsorbent: Experimental, mathematical modeling and simulation. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.08.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics. ENERGIES 2020. [DOI: 10.3390/en13184686] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With the increasing needs of clean water supplies, the use of biomass wastes and residues for environmental remediation is essential for environmental sustainability. In this study, the residues from winery and citrus juice industries, namely grape skin and orange peel, respectively, were first converted to hydrochars by hydrothermal carbonization (HTC) and then a cationic dye (methylene blue) adsorption was studied on hydrochars. Hydrochars from both feedstocks were produced at three different temperatures (180, 220, and 250 °C) and a fixed residence time (1 h) to evaluate the hydrochar’s performance on the dye adsorption. The hydrochars were characterized in terms of their pH, pH at point of zero charge (pHPZC), surface functionalities, and surface area. A batch adsorption study of the dye was carried out with variable adsorbate concentration, pH, and temperature. Two adsorption isotherms namely Langmuir and Freundlich models were fitted at 4, 20, and 36 °C. The thermodynamic properties of adsorption (Gibbs free energy (ΔG), enthalpy (ΔH) and entropy (ΔS)) were evaluated from the isotherms fittings. Results showed that the dye adsorption on both hydrochars was significant and followed Langmuir isotherm. The maximum adsorption capacity on citrus waste hydrochar was higher than the winery waste hydrochar at any corresponding HTC temperature. Although hydrochars showed the lowest surface area (46.16 ± 0.11 and 34.08 ± 1.23 m2/g for citrus and winery wastes, respectively) at 180 °C, their adsorption was the highest, owing to their maximum density of total oxygen functional groups (23.24 ± 0.22 and 32.69 ± 1.39 µmol/m2 for citrus and winery wastes, respectively), which decreased with the increase in HTC temperature. This research shows a sustainable route for the production of highly effective adsorbent materials at lower HTC temperatures from citrus and winery wastes.
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Guediri A, Bouguettoucha A, Chebli D, Chafai N, Amrane A. Molecular dynamic simulation and DFT computational studies on the adsorption performances of methylene blue in aqueous solutions by orange peel-modified phosphoric acid. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127290] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Arroub H, Hsissou R, Elharfi A. Investigation of modified chitosan as potential polyelectrolyte polymer and eco-friendly for the treatment of galvanization wastewater using novel hybrid process. RESULTS IN CHEMISTRY 2020. [DOI: 10.1016/j.rechem.2020.100047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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