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Hu M, Chen J, Liu Y. Structural properties and adsorption performance relationship towards three categories of lignin and their derived biochar. BIORESOURCE TECHNOLOGY 2024; 401:130712. [PMID: 38641300 DOI: 10.1016/j.biortech.2024.130712] [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: 03/10/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
The growing interest in utilizing lignin for dye removal has gained momentum, but there is limited information on the intricate relationship between lignin structural characteristics and adsorption efficacy, especially for its biochar derivatives. This study focused on three types of lignin and their corresponding biochar derivatives. Among them, ZnCl2-activated acidic/alkali densified lignin preparation of lignin-derived active carbon exhibited superior adsorption performance, achieving 526.32 mg/g for methylene blue and 2156.77 mg/g for congo red. Its exceptional adsorption capacity was attributed to its unique structural properties, including low alkyl and O-alkyl group content and high aromatic carbon levels. Furthermore, the adsorption mechanisms adhered to pseudo-second-order kinetics and the Langmuir model, signifying a spontaneous process. Intriguingly, lignin-derived active carbon also demonstrated remarkable recovery capabilities. These findings provide valuable insights into the impact of structural attributes on lignin and its biochar's adsorption performance.
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Affiliation(s)
- Mingyang Hu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Jiangwei Chen
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yun Liu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
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2
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Lobo WV, Loureiro Paes OADR, Pinheiro W, Soares ER, de Souza MP, Dos Santos Sousa A, Kumar V, Iglauer S, de Freitas FA. Application of chemically modified waste tucumã (Astrocaryum aculeatum) seeds in the biosorption of methylene blue: kinetic and thermodynamic parameters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34097-34111. [PMID: 38693458 DOI: 10.1007/s11356-024-33517-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 04/26/2024] [Indexed: 05/03/2024]
Abstract
Dye effluents cause diverse environmental problems. Methylene blue (MB) dye stands out since it is widely used in the textile industry. To reduce the pollution caused by the MB, we developed biosorbents from tucumã seeds, where the in natura seeds were treated with NaOH (BT) and H3PO4 (AT) solutions and characterized by Boehm titration, point of zero charges, FTIR, TGA, BET, and SEM. It was observed that the acid groups predominate on the surface of the three biosorbents. The process was optimized for all biosorbents at pH = 8, 7.5 g/L, 240 min, C0 = 250 mg/L, and 45 ℃. BT was more efficient in removing MB (96.20%; QMax = 35.71 mg/g), while IT and AT removed around 60% in similar conditions. The adsorption process best fits Langmuir and Redlich-Peterson isotherms, indicating a hybrid adsorption process (monolayer and multilayer) and pseudo-second-order kinetics. Thermodynamic data confirmed an endothermic and spontaneous adsorption process, mainly for BT. MB was also recovered through a desorption process with ethanol, allowing the BT recycling and reapplication of the dye. Thus, an efficient and sustainable biosorbent was developed, contributing to reducing environmental impacts.
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Affiliation(s)
- Wyvirlany Valente Lobo
- Programa de Pós-Graduação Em Química, Universidade Federal Do Amazonas, Setor Norte, Manaus, AM, 69080-900, Brazil
| | | | - William Pinheiro
- Programa de Pós-Graduação Em Química, Universidade Federal Do Amazonas, Setor Norte, Manaus, AM, 69080-900, Brazil
| | - Elzalina Ribeiro Soares
- Centro de Estudos Superiores de Tefé, Universidade Do Estado Do Amazonas, Estrada Do Bexiga, 1085, Bairro Jerusalém, Tefé, AM, 69470-000, Brazil
| | - Mayane Pereira de Souza
- Centro de Biotecnologia da Amazônia, Av. Gov. Danilo de Matos Areosa, 690 - Distrito Industrial I, Manaus, AM, 69075-351, Brazil
| | - Airi Dos Santos Sousa
- Centro de Biotecnologia da Amazônia, Av. Gov. Danilo de Matos Areosa, 690 - Distrito Industrial I, Manaus, AM, 69075-351, Brazil
| | - Vineet Kumar
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan, 305817, India
| | - Stefan Iglauer
- School of Engineering, Edith Cowan University, 270 Joondalup Dr., Joondalup, WA, 6027, Australia
| | - Flávio A de Freitas
- Programa de Pós-Graduação Em Química, Universidade Federal Do Amazonas, Setor Norte, Manaus, AM, 69080-900, Brazil.
- Centro de Biotecnologia da Amazônia, Av. Gov. Danilo de Matos Areosa, 690 - Distrito Industrial I, Manaus, AM, 69075-351, Brazil.
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Yang W, Chen Y, Li K, Jin W, Zhang Y, Liu Y, Ren Z, Li Y, Chen P. Optimization of microwave-expanding pretreatment and microwave-assisted extraction of hemicellulose from bagasse cells with the exploration of the extracting mechanism. Carbohydr Polym 2024; 330:121814. [PMID: 38368097 DOI: 10.1016/j.carbpol.2024.121814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/22/2023] [Accepted: 01/09/2024] [Indexed: 02/19/2024]
Abstract
Hemicellulose is mainly distributed in the tightly packed S2 layer of the plant cell wall and the middle lamella. This rigid microstructure of wood and interactions among hemicellulose, lignin, and cellulose jointly restrict the separation and transformation of hemicellulose in the wood matrix. To address this issue, a method combined with microwave-expanding pretreatment (MEP) and microwave-assisted extraction (MAE) with a NaOH solution was carried out. We found that the MEP could effectively create new pathways for bagasse cells in mass transferring. More specifically, 195 % of the specific surface area (m2/g) with 193 % of the pores (>50 nm) increased after MEP; the SEM images also confirmed that the microstructure of bagasse was modified. MAE could considerably exfoliate hemicellulose from cellulose fiber and accelerate mass transfer. Additionally, we optimized MEP and MAE by using response surface methodology (RSM). The optimal parameters were 370 K, 3.7 min, 1081 W microwave power, and 9.9 wt% NH4HCO3 consumption for the MEP and 1100 W microwave power, 2.5 wt% NaOH concentration, 34.6 min reaction time for MAE, respectively. Moreover, molecular dynamics (MD) simulation suggests that NaOH could significantly lower the work needed to peel off the xylan chain from cellulose nanofibril.
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Affiliation(s)
- Wenjin Yang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yu Chen
- School of Materials Science & Engineering, Beijing Institute of Technology, 100081, Beijing, China
| | - Kai Li
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Wen Jin
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Ya Zhang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yuxin Liu
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China.
| | - Zixing Ren
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yuke Li
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Pan Chen
- School of Materials Science & Engineering, Beijing Institute of Technology, 100081, Beijing, China.
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Wang Q, Mu J. Baking-inspired pore regulation strategy towards a hierarchically porous carbon for ultra-high efficiency cationic/anionic dyes adsorption. BIORESOURCE TECHNOLOGY 2024; 395:130324. [PMID: 38228220 DOI: 10.1016/j.biortech.2024.130324] [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: 11/04/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/18/2024]
Abstract
Converting waste resource into porous carbon toward contaminant capturing is a crucial strategy for realizing "treating waste with waste". Inspired by bread baking process, the soybean meal activated carbon (SAC) with multimodal pore structures was developed via thermally remodeling the pores of waste soybean meal. The obtained SAC-3-800 has ultra-high specific surface area (3536.952 m2/g), as well as a hierarchically porous structure. SAC-3-800 exhibits extremely high adsorption capacity for methylene blue (MB) (3015.59 mg/g), methyl orange (MO) (6486.30 mg/g), and mixed dyes (8475.09 mg/g). The hierarchically porous structure enabled fast adsorption kinetics of SAC-3-800 for MB and MO (∼30 min). Additionally, SAC-3-800 shows excellent dynamic adsorption and regeneration performance, exhibiting great potential for industrial applications. This work showcases a feasible method for synthesizing hierarchically porous carbon with outstanding adsorption performance that can simultaneously achieve efficient treatment of dye-wastewater and value-added utilization of waste resources.
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Affiliation(s)
- Qihang Wang
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China; Center for Water and Ecology, Tsinghua University, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jun Mu
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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Bouzikri S, Ouasfi N, Khamliche L. Statistical physics modeling study of an environmentally friendly and efficient adsorbent derived from the brown macroalgae Bifurcaria bifurcata for the removal of Bisphenol A. MARINE POLLUTION BULLETIN 2024; 199:116025. [PMID: 38232650 DOI: 10.1016/j.marpolbul.2024.116025] [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: 10/19/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024]
Abstract
The brown macroalgae Bifurcaria bifurcata was valued and used to develop a carbonaceous material activated by H2SO4 (AC-BB@H2SO4), with the goal of assessing its adsorption ability against Bisphenol A (BPA). During the adsorption experiments, the effects of the adsorbent dose, solution pH, and contact time were examined, and the results were m = 0.4 g/L, pH = 8.3, and t = 120 min, with an elimination yield of 91.6 %. With comparatively high R2 values, the pseudo-second-order kinetic model perfectly fitted the experimental data. Langmuir's model was found to be the best appropriate for describing the adsorption equilibrium of BPA on AC-BB@H2SO4. The thermodynamic findings show that BPA adsorption on AC-BB@H2SO4 was spontaneous, favorable, and endothermic in nature. Even after six cycles of reuse, regeneration testing demonstrated that our adsorbent could eliminate BPA by >50 %. The BPA adsorption mechanism's statistical physics control parameters were determined and analyzed. BPA's adsorption energies were <40 kJ/mol, indicating that the interactions between BPA and AC-BB@H2SO4 were governed by physical forces (i.e., hydrogen bonding and van der Waals and electrostatic interactions). All of these intriguing findings indicate that our carbonaceous material might have direct ramifications in the field of wastewater treatment, notably for the clearance of BPA, which is difficult to biodegrade.
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Affiliation(s)
- Said Bouzikri
- Laboratory of Organic Chemistry, Bioorganic and Environment, Chemistry Department, Faculty of Sciences, University Chouaïb Doukkali, 24000 El Jadida, Morocco.
| | - Nadia Ouasfi
- Laboratory of Organic Chemistry, Bioorganic and Environment, Chemistry Department, Faculty of Sciences, University Chouaïb Doukkali, 24000 El Jadida, Morocco; Higher Institute of Nursing Professions and Health Techniques, ISPITS of Agadir, Morocco
| | - Layachi Khamliche
- Laboratory of Organic Chemistry, Bioorganic and Environment, Chemistry Department, Faculty of Sciences, University Chouaïb Doukkali, 24000 El Jadida, Morocco
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Zhang L, Yang L, Chen J, Zhang Y, Zhou X. Enhancing efficient reclaim of phosphorus from simulated urine by magnesium-functionalized biochar: Adsorption behaviors, molecular-level mechanistic explanations and its potential application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167293. [PMID: 37742963 DOI: 10.1016/j.scitotenv.2023.167293] [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] [Received: 07/05/2023] [Revised: 09/04/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
Magnesium-functionalized Magnolia grandiflora Linn leaf-derived biochar (MBC) capable of efficiently reclaiming phosphorus from urine was synthesized by slow co-pyrolysis. Four adsorption kinetic and seven adsorption isotherm models were fitted to the batch adsorption and desorption experimental data, and it was found that pseudo-first-order kinetic model and multilayer model with saturation best described the phosphate-phosphorus (PO43--P) adsorption process by MBC. MBC and phosphorus-saturated MBC (P-MBC) were found to offer outstanding phosphorus adsorption and slow release properties, respectively. Based on material characterization, statistical physics, adsorption energy distribution and statistical thermodynamics, a multi-ionic, inclined orientation, entropy-driven spontaneous endothermic process of MBC on PO43--P was proposed, involving physicochemical interactions (porous filling, electrostatic attraction, ligand exchange and surface precipitation). Further, seed germination and early seedling growth experiments proved that P-MBC can be used as a slow-release fertilizer. Overall, MBC offers prospective applications as an efficient phosphorus adsorbent and then as a slow-release fertilizer.
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China
| | - Libin Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China.
| | - Jiabin Chen
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China; Key Laboratory of Rural Toilet and Sewage Treatment Technology, Ministry of Agriculture and Rural Affairs, Shanghai 200092, PR China.
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El-Shafie AS, Karamshahi F, El-Azazy M. Turning waste avocado stones and montmorillonite into magnetite-supported nanocomposites for the depollution of methylene blue: adsorbent reusability and performance optimization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:118764-118781. [PMID: 37919500 PMCID: PMC10698139 DOI: 10.1007/s11356-023-30538-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/13/2023] [Indexed: 11/04/2023]
Abstract
The existence of methylene blue (MB) in wastewater even as traces is raising environmental concerns. In this regard, the performances of four adsorbents, avocado stone biochar (AVS-BC), montmorillonite (MMT), and their magnetite Fe3O4-derived counterparts, were compared. Results showed the superior performance of Fe3O4@AVS-BC and Fe3O4@MMT nanocomposites with removal percentages (%R) of 95.59% and 88%. The morphological features of AVS-BC as revealed by SEM analysis showed a highly porous surface compared to a plane and smooth surface in the case of MMT. Surface analysis using FT-IR and Raman spectroscopies corroborated the existence of the Fe-O peaks upon loading with magnetite. The XRD analysis confirmed the formation of cubic magnetite nanoparticles. The adsorption process in the batch mode was optimized using central composite design (CCD). Equilibrium and kinetic isotherms showed that the adsorption of MB onto Fe3O4@AVS-BC fitted well with the Langmuir isotherm and the pseudo-second-order (PSO) model. The maximum adsorption capacity (qm) was 118.9 mg/g (Fe3O4@AVS-BC) and 72.39 mg/g (Fe3O4@MMT). The Fe3O4@AVS-BC showed a higher selectivity toward MB compared to other organic contaminants. The MB-laden adsorbent was successfully used for the remediation of Cr (III), Ni (II), and Cd (II) with removal efficiencies hitting 100% following thermal activation.
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Affiliation(s)
- Ahmed S El-Shafie
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Fatima Karamshahi
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Marwa El-Azazy
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar.
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Sellaoui L, Dhaouadi F, Abdulaziz F, Alsehli AH, M Alsowayigh M, Dotto GL, da Boit Martinello K, Silva LFO, Rtimi S, Bonilla-Petriciolet A. Adsorption of perfluorooctanoic carboxylic and heptadecafluorooctane sulfonic acids via magnetic chitosan: isotherms and modeling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:118410-118417. [PMID: 37910375 DOI: 10.1007/s11356-023-30600-x] [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: 07/26/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
This paper evaluates the adsorption mechanism of perfluorooctanoic carboxylic acid (PFCA) and heptadecafluorooctane sulfonic acid (HFOSA) on magnetic chitosan for the first time via a statistical physics modeling. Magnetic chitosan (MC-CoFe2O4) was produced from shrimp wastes and used in standard batch adsorption systems to remove PFCA and HFOSA. The experimental isotherms indicated that the maximum adsorption capacities ranged from 14 to 27.12 mg/g and from 19.16 to 45.12 mg/g for PFCA and HFOSA, respectively, where an exothermic behavior was observed for both compounds. The adsorption data were studied via an advanced model hypothesizing that a multilayer process occurred for these adsorption systems. This theoretical approach indicated that the total number of formed layers of PFCA and HFOSA adsorbates is about 3 (Nt = 2.83) at high temperatures (328 K) where a molecular aggregation process was noted during the adsorption. The maximum saturation-multilayer adsorption of PFCA and HFOSA on magnetic chitosan was 30.77 and 50.26 mg/g, respectively, and the corresponding adsorption mechanisms were successfully investigated. Two energies were responsible for the formed adsorbate layer directly on the surface and the vertical layers were computed and interpreted, reflecting that physical interactions were involved to bind these molecules on the adsorbent surface at different temperatures where the calculated adsorption energies ranged from 14 to 31 kJ/mol. Overall, this work provides theoretical insights to understand the adsorption mechanism of PFCA and HFOSA using the statistical physics modeling and its results can be used to improve the adsorbent performance for engineering applications.
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Affiliation(s)
- Lotfi Sellaoui
- CRMN, Centre for Research on Microelectronics and Nanotechnology of Sousse, NANOMISENE, LR16CRMN01, Code Postal 4054, Sousse, Tunisia.
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, Monastir University, LR18ES18, Monastir, Tunisia.
| | - Fatma Dhaouadi
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, Monastir University, LR18ES18, Monastir, Tunisia
| | - Fahad Abdulaziz
- Department of Chemistry, College of Science, University of Ha'il, 81451, Ha'il, Saudi Arabia
| | - Amal H Alsehli
- Chemistry Department, College of Science, Taibah University, 42353, Madinah, Saudi Arabia
| | - Marwah M Alsowayigh
- Chemistry Department, College of Science, King Faisal University, 31982, Al-Ahsa, Saudi Arabia
| | - Guilherme Luiz Dotto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Kátia da Boit Martinello
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Luis F O Silva
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Sami Rtimi
- Global Institute for Water, Environment, And Health (GIWEH), 1210, Geneva, Switzerland
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Wang C, Lin M, Yang Q, Fu C, Guo Z. The Principle of Steam Explosion Technology and Its Application in Food Processing By-Products. Foods 2023; 12:3307. [PMID: 37685239 PMCID: PMC10486971 DOI: 10.3390/foods12173307] [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: 08/16/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
Steam explosion technology is an emerging pretreatment method that has shown great promise for food processing due to its ability to efficiently destroy the natural barrier structure of materials. This narrative review summarizes the principle of steam explosion technology, its similarities and differences with traditional screw extrusion technology, and the factors that affect the technology. In addition, we reviewed the applications in food processing by-products in recent years. The results of the current study indicate that moderate steam explosion treatment can improve the quality and extraction rate of the target products. Finally, we provided an outlook on the development of steam explosion technology with a reference for a wider application of this technology in the food processing field.
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Affiliation(s)
- Changrong Wang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (C.W.); (M.L.); (Q.Y.); (C.F.)
- Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou 350002, China
| | - Mengfan Lin
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (C.W.); (M.L.); (Q.Y.); (C.F.)
- Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou 350002, China
| | - Qingyu Yang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (C.W.); (M.L.); (Q.Y.); (C.F.)
- Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou 350002, China
| | - Chenying Fu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (C.W.); (M.L.); (Q.Y.); (C.F.)
- Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou 350002, China
| | - Zebin Guo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (C.W.); (M.L.); (Q.Y.); (C.F.)
- Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou 350002, China
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Samanth A, Vinayagam R, Murugesan G, Varadavenkatesan T, Selvaraj R, Pugazhendhi A. Enhanced adsorption of 2,4-dichlorophenoxyacetic acid using low-temperature carbonized Peltophorum pterocarpum pods and its statistical physics modeling. CHEMOSPHERE 2023:139143. [PMID: 37285973 DOI: 10.1016/j.chemosphere.2023.139143] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/09/2023] [Accepted: 06/04/2023] [Indexed: 06/09/2023]
Abstract
The usage of various herbicides in the agricultural field leads to water pollution which is a big threat to the environment. Herein, the pods of the Peltophorum pterocarpum tree were used as a cheap resource to synthesize activated carbon (AC) by low-temperature carbonization to remove 2,4-dichlorophenoxyacetic acid (2,4-D) - an abundantly used herbicide. The exceptional surface area (1078.34 m2/g), mesoporous structure, and the various functional groups of the prepared AC adsorbed 2,4-D effectively. The maximum adsorption capacity was 255.12 mg/g, significantly higher than the existing AC adsorbents. The adsorption data satisfactorily modelled using Langmuir and pseudo-second-order models. Also, the adsorption mechanism was studied using a statistical physics model which substantiated the multi-molecular interaction of 2,4-D with the AC. The adsorption energy (<20 kJ/mol) and thermodynamic studies (ΔH°: -19.50 kJ/mol) revealed the physisorption and exothermicity. The practical application of the AC was successfully tested in various waterbodies by spiking experiments. Hence, this work confirms that the AC prepared from the pods of P. pterocarpum can be applied as a potential adsorbent to remove herbicides from polluted waterbodies.
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Affiliation(s)
- Adithya Samanth
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Gokulakrishnan Murugesan
- Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bengaluru, 560054, Karnataka, India
| | - Thivaharan Varadavenkatesan
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Raja Selvaraj
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Arivalagan Pugazhendhi
- Emerging Materials for Energy and Environmental Applications Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
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Abd-Elhamid AI, Ali HH, Nayl AA. Modification of sugarcane bagasse as a novel lignocellulosic biomass adsorbent nanocomposite to improve adsorption of methylene blue. CELLULOSE 2023; 30:5239-5258. [DOI: 10.1007/s10570-023-05205-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/13/2023] [Indexed: 09/02/2023]
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Liu Y, Song Y, Li H, Ma Z, Yang Z. Enhanced removal of organophosphate esters by iron-modified biochar with developed mesoporous: Performance and mechanism based on site energy distribution theory. CHEMOSPHERE 2023; 330:138722. [PMID: 37084903 DOI: 10.1016/j.chemosphere.2023.138722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/19/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Removing the widely concerned pollutant of organophosphate esters (OPEs) by agriculture waste biochar is an effective way to address the waste and pollutant problem simultaneously. In this work, an iron-modified coconut shell biochar (MCSB) was prepared by co-pyrolysis method and used to adsorb tris(2-chloroethyl) phosphate (TCEP) and tris(1-chloro-2-propyl) phosphate (TCPP), which were two typical OPEs. The attention was focused on comprehensively investigating the adsorption behaviors to study the adsorption mechanisms of TCEP and TCPP onto MCSB. With the development of mesoporous and formation of γ-Fe2O3 in MCSB, the adsorption equilibrium was quickly reached in 60 min with the Langmuir maximum adsorption capacities of 211.3 mg/g for TCEP and 223.7 mg/g for TCPP, respectively. Results of adsorption kinetics and isotherm showed the heterogeneous and multilayer of the adsorption process. Pore-filling interaction, the Lewis acid-base interaction, and the hydrophobic interaction were considered to drive the adsorption. And the site energy distribution theory was introduced to further reveal that the physisorption was the main adsorption mechanism, while the Lewis acid-base interaction was responsible for the differences in adsorption of TCEP and TCPP onto MCSB. Additionally, the excellent adsorption performances of MCSB in various circumstances and fixed-bed column experiments suggested that the MCSB would be a promising adsorbent for OPEs removal.
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Affiliation(s)
- Yang Liu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, China
| | - Yang Song
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, China
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, China.
| | - Zhizi Ma
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, China
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13
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Luo M, Wang L, Li H, Bu Y, Zhao Y, Cai J. Hierarchical porous biochar from kelp: Insight into self-template effect and highly efficient removal of methylene blue from water. BIORESOURCE TECHNOLOGY 2023; 372:128676. [PMID: 36706822 DOI: 10.1016/j.biortech.2023.128676] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 06/18/2023]
Abstract
Biochar is known to efficiently remove dyes especially for biochar with hierarchical pores and partial N-species. Here, a facile pyrolysis is used to yield N-doped biochar from kelp without additives, showing surface areas of 771 m2/g as temperature up to 1000 °C and hierarchical small-sized mesopores (2-4 nm) and wide meso-macropores (8-60 nm). A possible self-template mechanism from inorganics is proposed to form hierarchical pore architecture in biochar and used for methylene blue (MB) removal. Biochar pyrolyzed at 1000 °C is found to be efficient for MB removal with uptake of 379.8 mg/g under ambient conditions, one of the largest ever recorded uptakes for other biochar without activation, owing to synergistic effects of high surface areas, mesopores, and graphitized N-species. These results confirm that a facile pyrolysis for transformation of kelp into efficient dyes adsorbent is a cost-effective process for economic and environmental protection.
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Affiliation(s)
- Mingyu Luo
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Liuting Wang
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Haixia Li
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Yu Bu
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Yinxu Zhao
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Jinjun Cai
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China; School of Engineering Materials & Science, Queen Mary University of London, London E1 4NS, United Kingdom.
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14
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Zhang T, Zuo S. Drying enables multiple reuses of activated carbon without regeneration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:45097-45111. [PMID: 36701054 DOI: 10.1007/s11356-023-25481-z] [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: 10/28/2022] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Traditional regeneration of activated carbon is usually carried out by high-temperature oxidation in industrial processes, which reduces the quality and performance of the adsorbent, thereby increasing costs and damaging the environment. In this study, a simple drying process is proposed to enable reuse of spent activated carbon. The feasibility and merits of this method were evaluated in batch and continuous adsorption modes using dyes as adsorbates. The batch adsorption results showed that the activated carbon could be reused seven times after a simple drying process, because it led to full occupancy of the activated carbon pores by adsorbate molecules. The cumulative adsorption capacities of the activated carbon were as high as 1005.3 mg/g for methyl orange (MO) and 954.8 mg/g for methylene blue (MB). Continuous adsorption experiments in a fixed-bed column demonstrated that the activated carbon column could be reused more than three times after simply drying. Moreover, dye molecules adsorbed by the activated carbon were not leached by the stream of dye solution during reuse. This drying method exhibits three main merits for reuse of activated carbon, including (1) remarkably reduced consumption of fresh activated carbon to 51.5% or below, (2) significantly increased recovery of high-value adsorbate from the liquid phase, and (3) potential integration of multiple steps for industrial adsorption processes.
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Affiliation(s)
- Tao Zhang
- College of Chemical Engineering, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China
| | - Songlin Zuo
- College of Chemical Engineering, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China.
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15
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A novel Mg-doped pyro-hydrochars as methylene blue adsorbents: Adsorption behaviors and mechanism. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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16
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He E, Liu N, Zhou Y, Wang Z, Lu X, Yu L. Adsorption properties and mechanism of zinc acrylic carbon nanosphere aggregates for perfluorooctanoic acid from aqueous solution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120540. [PMID: 36370977 DOI: 10.1016/j.envpol.2022.120540] [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: 09/04/2022] [Revised: 10/19/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
This study found that the cross-linkable zinc acrylic nanosphere aggregates (NAs) as precursors were successfully prepared by a simple one-step synthesis route, and Zn,O dopped-carbon nanocomposites were obtained through temperature-controllable engineering, which showed excellent adsorption capacities for perfluorooctanoic acid (PFOA). A series of experiments were performed to investigate and compare carbon materials for the efficient removal of PFOA. The maximum adsorption capacities of PFOA absorbed on carbon nanospheres aggregates (CNAs) were calculated by the Langmuir (360.98 mg/g) and Sips models (309.65 mg/g). The kinetic model indicated there was chemical adsorption and physical adsorption in the adsorption process. Van der Waals force and electrostatic interactions might be the dominant mechanism of the adsorption process. Additionally, pore-filling also played a role in the adsorption process. Furthermore, the adsorption efficiency was still above 90% after five cycles. The selective adsorption ability was tested through various pollutants (metal ions and dye solutions) absorbed by the CNAs. Our results proved that carbon nanosphere aggregates (CNAs) are expected to be outstanding adsorption materials for the decontamination of PFOA from wastewater.
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Affiliation(s)
- Enhui He
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Ning Liu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Yu Zhou
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Zheng Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Xiaolan Lu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Liangmin Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China.
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17
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Alvarez-Galvan Y, Minofar B, Futera Z, Francoeur M, Jean-Marius C, Brehm N, Yacou C, Jauregui-Haza UJ, Gaspard S. Adsorption of Hexavalent Chromium Using Activated Carbon Produced from Sargassum ssp.: Comparison between Lab Experiments and Molecular Dynamics Simulations. Molecules 2022; 27:6040. [PMID: 36144787 PMCID: PMC9503432 DOI: 10.3390/molecules27186040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/06/2022] [Accepted: 09/10/2022] [Indexed: 12/04/2022] Open
Abstract
Adsorption is one of the most successful physicochemical approaches for removing heavy metal contaminants from polluted water. The use of residual biomass for the production of adsorbents has attracted a lot of attention due to its cheap price and environmentally friendly approach. The transformation of Sargassum-an invasive brown macroalga-into activated carbon (AC) via phosphoric acid thermochemical activation was explored in an effort to increase the value of Sargassum seaweed biomass. Several techniques (nitrogen adsorption, pHPZC, Boehm titration, FTIR and XPS) were used to characterize the physicochemical properties of the activated carbons. The SAC600 3/1 was predominantly microporous and mesoporous (39.6% and 60.4%, respectively) and revealed a high specific surface area (1695 m2·g-1). To serve as a comparison element, a commercial reference activated carbon with a large specific surface area (1900 m2·g-1) was also investigated. The influence of several parameters on the adsorption capacity of AC was studied: solution pH, solution temperature, contact time and Cr(VI) concentration. The best adsorption capacities were found at very acid (pH 2) solution pH and at lower temperatures. The adsorption kinetics of SAC600 3/1 fitted well a pseudo-second-order type 1 model and the adsorption isotherm was better described by a Jovanovic-Freundlich isotherm model. Molecular dynamics (MD) simulations confirmed the experimental results and determined that hydroxyl and carboxylate groups are the most influential functional groups in the adsorption process of chromium anions. MD simulations also showed that the addition of MgCl2 to the activated carbon surface before adsorption experiments, slightly increases the adsorption of HCrO4- and CrO42- anions. Finally, this theoretical study was experimentally validated obtaining an increase of 5.6% in chromium uptake.
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Affiliation(s)
- Yeray Alvarez-Galvan
- Laboratoire COVACHIM-M2E, EA 3592, Campus de Fouillole, Université des Antilles, 97157 Pointe à Pitre, France
- NBC SARL Company, 8, Rue Saint Cyr, Résidence Océane—Apt no. 5, 97300 Cayenne, France
| | - Babak Minofar
- Laboratory of Structural Biology and Bioinformatics, Institute of Microbiology of the Czech Academy of Sciences, Zamek 136, 37333 Nové Hrady, Czech Republic
| | - Zdeněk Futera
- Faculty of Science, University of South Bohemia České Budějovice, Branišovská 1760/31a, 37005 České Budějovice, Czech Republic
| | - Marckens Francoeur
- Laboratoire COVACHIM-M2E, EA 3592, Campus de Fouillole, Université des Antilles, 97157 Pointe à Pitre, France
| | - Corine Jean-Marius
- Laboratoire COVACHIM-M2E, EA 3592, Campus de Fouillole, Université des Antilles, 97157 Pointe à Pitre, France
| | - Nicolas Brehm
- NBC SARL Company, 8, Rue Saint Cyr, Résidence Océane—Apt no. 5, 97300 Cayenne, France
| | - Christelle Yacou
- Laboratoire COVACHIM-M2E, EA 3592, Campus de Fouillole, Université des Antilles, 97157 Pointe à Pitre, France
| | | | - Sarra Gaspard
- Laboratoire COVACHIM-M2E, EA 3592, Campus de Fouillole, Université des Antilles, 97157 Pointe à Pitre, France
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18
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Wang M, Cai Y, Zhou B, Yuan R, Chen Z, Chen H. Removal of PFASs from water by carbon-based composite photocatalysis with adsorption and catalytic properties: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155652. [PMID: 35508243 DOI: 10.1016/j.scitotenv.2022.155652] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/24/2022] [Accepted: 04/28/2022] [Indexed: 05/27/2023]
Abstract
Per- and polyfluoroalkyl substances (PFASs) are a class of persistent organic pollutants widely distributed in aquatic environments. The adsorption and photocatalytic methods have been widely used to remove PFASs in water because of their respective advantages. Still, they have apparent defects when used alone. Therefore, the adsorption and photocatalytic technologies are combined through suitable preparation methods, and the excellent properties of the two are used to synergize the treatment of organic pollutants. This strategy of "concentrating" pollutants and then degrading them in a centralized manner plays an essential role in removing trace PFASs. Nevertheless, a review focusing on this kind of adsorption photocatalyst system is lacking. This review will fill this gap and provide a reference for developing a carbon-based composite photocatalyst. Firstly, different carbon-based composite photocatalysts are reviewed in detail, focusing on the differences in various composite materials' excellent adsorption and catalytic properties. Secondly, the factors influencing the removal effect of carbon-based composite photocatalysts are discussed. Thirdly, the removal mechanism of carbon-based composite photocatalysts is summarized in detail. The removal process involves two steps: adsorption and photodegradation. The adsorption process involves multiple cooperative adsorption mechanisms, and photocatalytic degradation includes oxidative and reductive degradation. Fourthly, the comparison of adsorption-photocatalysis with common treatment techniques (including removal rate, range of adaptation, cost, and the possibility of expanding application) is summarized. Finally, the prospects of carbon-based composite photocatalysts for repairing PFASs are given by evaluating the performance of different composites.
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Affiliation(s)
- Mingran Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yanping Cai
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Beihai Zhou
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Rongfang Yuan
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhongbing Chen
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
| | - Huilun Chen
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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19
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Wang Q, Luo C, Lai Z, Chen S, He D, Mu J. Honeycomb-like cork activated carbon with ultra-high adsorption capacity for anionic, cationic and mixed dye: Preparation, performance and mechanism. BIORESOURCE TECHNOLOGY 2022; 357:127363. [PMID: 35618189 DOI: 10.1016/j.biortech.2022.127363] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Herein, the cork activated carbon (CAC) with excellent adsorption performance for cationic dye, anionic dye, and mixed dye was obtained by a two-step pyrolysis method. The CAC exhibits a fluffy honeycomb structure consisted of porous carbon nanosheets (100-200 nm), ultra-high specific surface area (3402.68 m2/g), and well-developed hierarchical porous structure, which offers a great deal of adsorption sites and transport channels to dye molecules. The adsorption process of all the dyes onto CAC is better described by Langmuir isotherm model and pseudo-2nd-order kinetic model. The CAC shows ultra-high adsorption capacity for methylene blue (1283.99 mg/g), rhodamine B (4067.57 mg/g), methyl orange (2666.2 mg/g), and congo red (8920.61 mg/g), with an extremely low equilibrium adsorption time (∼10 min). Collectively, this study demonstrated the potential of converting waste cork into high value-added adsorbent for the efficient purification of dye wastewater.
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Affiliation(s)
- Qihang Wang
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China
| | - Cuimei Luo
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China
| | - Zongyuan Lai
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China
| | - Shiqing Chen
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China
| | - Danwei He
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China
| | - Jun Mu
- Key Laboratory of Wood Material Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, PR China.
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20
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Inkoua S, Li C, Kontchouo FMB, Sun K, Zhang S, Gholizadeh M, Wang Y, Hu X. Activation of waste paper: Influence of varied chemical agents on product properties. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 146:94-105. [PMID: 35588650 DOI: 10.1016/j.wasman.2022.05.003] [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: 02/19/2022] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Waste paper (WP) is rich in cellulose, which can be activated to produce porous carbon, bio-oil, and combustible gases. During chemical activation of WP, the use of varied chemical agents not only generates activated carbon of distinct pore structure but also bio-oil/gases of different property. In this study, the activation of WP with varied chemical agents was conducted. The distinct characteristics of activated carbon and also bio-oil/gases were correlated with the different nature of the used chemical agents. The results indicated that H3PO4 and ZnCl2 catalyzed polymerization reactions for producing more bio-oil while less gases owing to their Brønsted and Lewis acidic sites. K2C2O4 showed high activity for cracking/gasification reactions, forming bio-oil with higher abundance of organics with smaller π-conjugated structures. In addition, ZnCl2 could create a very coarse porous structure with abundant macropores via destroying fiber structure in WP and promoting the growth of graphitic crystals. In comparison, K2C2O4 hindered the aromatization and facilitated the formation of amorphous activated carbon. K2C2O4 and ZnCl2 were much more effective than H3PO4 for creating micropores and mesopores from WP, the derived activated carbon showed superior performances as the electrode of supercapacitor and adsorbent for adsorption of oxytetracycline from aqueous solution. In addition, K2C2O4 as activating agent showed lower environmental impact than ZnCl2 in terms of energy consumption, environmental pollution and the greenhouse effect.
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Affiliation(s)
- Stelgen Inkoua
- School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China
| | - Chao Li
- School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China
| | | | - Kai Sun
- School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China
| | - Shu Zhang
- Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China
| | - Mortaza Gholizadeh
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Yi Wang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Xun Hu
- School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China.
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21
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Xia J, Marthi R, Twinney J, Ghahreman A. A Review on Adsorption Mechanism of Gold Cyanide Complex onto Activation Carbon. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Optimization of the Preparation of Activated Carbon from Prickly Pear Seed Cake for the Removal of Lead and Cadmium Ions from Aqueous Solution. SUSTAINABILITY 2022. [DOI: 10.3390/su14063245] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, we evaluated the use of prickly pear seed cake, a by-product of prickly pear seed oil extraction, as a new precursor for producing activated carbon by phosphoric acid activation, and the obtained carbon’s capacity for heavy metal removal from aqueous solution. Response surface methodology based on the full factorial design at two levels (24) was developed to reduce the number of experiments and reach optimal preparation conditions for the removal of cadmium and lead ions from aqueous solutions. Design Expert 11.1.2.0 Trial software was used for generating the statistical experimental design and analyzing the observed data. Factors influencing the activation process, such as carbonization temperature, activation temperature, activation time, and impregnation ratio, were studied. Responses were studied in depth with an analysis of variance to estimate their significance. Each response was outlined by a first-order regression equation demonstrating satisfactory correspondence between the predicted and experimental results as the adjusted coefficients of correlation. Based on the statistical data, the best conditions for the removal of heavy metals from aqueous solution by the obtained activated carbon were indicated. The maximum iodine number and methylene blue index were 2527.3 mg g−1 and 396.5 mg g−1, respectively, using activated carbon obtained at the following conditions: Tc = 500 °C, Ta = 500 °C, impregnation ratio = 2:1 (g H3PO4: g carbon), and activation time of two hours. The maximum adsorption reached 170.2 mg g−1 and 158.4 mg g−1 for Cd2+ and Pb2+, respectively, using activated carbon obtained at the following conditions: Tc = 600 °C, Ta = 400 °C, impregnation ratio = 2:1 (g H3PO4: g carbon), and activation time of one hour. The activated carbon obtained was characterized by Boehm titration, pH of point of zero charge (pHPZC), Brunauer–Emmett–Teller surface area (SBET), and scanning electron microscopy. Adsorption was performed according to different parameters: pH solution, adsorbent dosage, temperature, contact time, and initial concentration. Regeneration experiments proved that the obtained activated carbon still had a high removal capacity for Cd2+ and Pb2+ after five regeneration cycles.
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