1
|
Qin D, He C, Gao Y, Lyu B. Optimization of total flavonoids purification process in rose by uniform design method. Prep Biochem Biotechnol 2024; 54:946-957. [PMID: 38334942 DOI: 10.1080/10826068.2024.2311918] [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] [Indexed: 02/10/2024]
Abstract
This study aims to establish a method for purifying total flavonoids in roses using macroporous resin columns, intending to leverage and harness their potential. We screened six macroporous resins to evaluate their capacity for their adsorption and desorption, ultimately identifying X5 macroporous resin as the most effective. To comprehensively understand the adsorption behavior, we analyzed it using various models, such as pseudo-first-order and pseudo-second-order kinetic models, particle diffusion models, and Langmuir, Freundlich, and Temkin isotherm models. Employing both single-factor and uniform design, approaches, the focus of this work was on maximizing the total flavonoid recovery rate. A 3-factor and 10-level uniform design table was utilized for optimizing the optimal process parameters and exploring the antioxidant properties of the purified flavonoids. The optimal process conditions for purifying total flavonoids from roses can be summarized as follows: a sample concentration of 2 mg/mL, pH at 2, 55 mL sample volume, eluent ethanol concentration of 75%, eluent volume of 5 BV, and the elution rate set at 1 mL/min. Following purification, the total flavonoid content peaked at 57.82%, achieving an 84.93% recovery rate, signifying substantial antioxidant potential. Consequently, the method established for purifying TFR using X5 macroporous resin in this study proves to be a dependable and reliable method consistent approach.
Collapse
Affiliation(s)
- Dongmei Qin
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, China
| | - Cui He
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, China
| | - Yuefeng Gao
- College of Applied Engineering, Henan University of Science and Technology, Sanmenxia, China
| | - Bo Lyu
- The First Affiliated Hospital of School of Medicine, Shihezi University, Shihezi, China
| |
Collapse
|
2
|
Wang X, Wu Y, Yue C, Song Y, Shen Z, Zhang Y. Enhanced adsorption of dye wastewater by low-temperature combined NaOH/urea pretreated hydrochar: Fabrication, performance, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32800-32812. [PMID: 38664320 DOI: 10.1007/s11356-024-33230-z] [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: 01/09/2024] [Accepted: 04/02/2024] [Indexed: 05/29/2024]
Abstract
The highly stable biomass structure formed by cellulose, hemicellulose, and lignin results in incomplete conversion and carbonization under hydrothermal conditions. In this study, pretreated corn straw hydrochar (PCS-HC) was prepared using a low-temperature alkali/urea combination pretreatment method. The Mass loss rate of cellulose, hemicellulose, and lignin from pretreated biomass, as well as the effects of the pretreatment method on the physicochemical properties of PCS-HC and the adsorption performance of PCS-HC for alkaline dyes (rhodamine B and methylene blue), were investigated. The results showed that the low-temperature NaOH/urea pretreatment effectively disrupted the stable structure formed by cellulose, hemicellulose, and lignin. NaOH played a dominant role in solubilizing cellulose and the combination of low temperature and urea enhanced the ability of NaOH to remove cellulose, hemicellulose, and lignin. Compared to the untreated hydrochar, PCS-HC exhibited a rougher surface, a more abundant pore structure, and a larger specific surface area. The unpretreated hydrochar exhibited an adsorption capacity of 64.8% for rhodamine B and 66.32% for methylene blue. However, the removal of rhodamine B and methylene blue by PCS-BC increased to 89.12% and 90.71%, respectively, under the optimal pretreatment conditions. The PCS-HC exhibited a favorable adsorption capacity within the pH range of 6-9. However, the presence of co-existing anions such as Cl-, SO42-, CO32-, and NO3- hindered the adsorption capacity of PCS-HC. Among these anions, CO32- exhibited the highest level of inhibition. Chemisorption, including complexation, electrostatic attraction, and hydrogen bonding, were the primary mechanism for dye adsorption by PCS-HC. This study provides an efficient method for utilizing agricultural waste and treating dye wastewater.
Collapse
Affiliation(s)
- Xiaoxia Wang
- Institute of New Rural Development, School of Electronics and Information Engineering, Tongji University, Shanghai, 201804, China
| | - Yuhao Wu
- Institute of New Rural Development, School of Electronics and Information Engineering, Tongji University, Shanghai, 201804, China
| | - Chang Yue
- Institute of New Rural Development, School of Electronics and Information Engineering, Tongji University, Shanghai, 201804, China
| | - Yuanbo Song
- Institute of New Rural Development, School of Electronics and Information Engineering, Tongji University, Shanghai, 201804, China
| | - Zheng Shen
- Institute of New Rural Development, School of Electronics and Information Engineering, Tongji University, Shanghai, 201804, China.
- Shanghai Research Institute of Pollution Control and Ecological Safety, Tongji University, Shanghai, China.
- Key Laboratory of Rural Toilet and SewageTreatment Technology, Ministry of Agricultureand Rural Affairs, Tongji University, Shanghai, China.
| | - Yalei Zhang
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
- Shanghai Research Institute of Pollution Control and Ecological Safety, Tongji University, Shanghai, China
- Key Laboratory of Rural Toilet and SewageTreatment Technology, Ministry of Agricultureand Rural Affairs, Tongji University, Shanghai, China
| |
Collapse
|
3
|
Wasilewska M, Derylo-Marczewska A, Marczewski AW. Comprehensive Studies of Adsorption Equilibrium and Kinetics for Selected Aromatic Organic Compounds on Activated Carbon. Molecules 2024; 29:2038. [PMID: 38731529 PMCID: PMC11085397 DOI: 10.3390/molecules29092038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/17/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
This work presents a comprehensive analysis of the adsorption of selected aromatic organic compounds on activated carbons. Both the equilibrium and kinetics of adsorption were studied using UV-Vis spectrophotometry. The influence of a number of factors: pH, contact time, presence of an accompanying substance, adsorbate concentration, as well as the mass and size of adsorbent grains, on the adsorption process from aqueous solutions was investigated. Phenol, 2-nitrophenol, 3-nitrophenol, 4-nitrophenol and methylene blue (as an accompanying substance) were selected as adsorbates. GAC 1240W and RIAA activated carbons were used as adsorbents. The equilibrium data were analyzed using the generalized Langmuir isotherm equation (R2 = 0.912-0.996). Adsorption rate data were fitted using a multi-exponential kinetic equation (1 - R2 = (1.0 × 10-6)-(8.2 × 10-4)). As an additional parameter, the half-time was also used to present the influence of selected factors on the adsorption kinetics. An increase in the amount of adsorption was demonstrated with increasing contact time as well as with decreasing solution pH and adsorbent grain size. For selected systems, an increase in the adsorption rate was observed with increasing adsorbate concentration, adsorbent mass and at lower pH values. In some cases, the presence of an accompanying substance also resulted in an increase in adsorption kinetics. In the tested experimental systems, optimal conditions for adsorption were established (T = 298 K, pH = 2, contact time: 7 days, grain diameter: >0.5 mm and the ratio of the mass of the adsorbent to the volume of the adsorbate solution: 1 g/L). Additionally, the acid-base properties (potentiometric titration), morphology (SEM) and structure (TEM) of the used adsorbents were also examined.
Collapse
Affiliation(s)
- Małgorzata Wasilewska
- Department of Physical Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | - Anna Derylo-Marczewska
- Department of Physical Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | | |
Collapse
|
4
|
Salehi Nasab F, Ahmadi Azqhandi MH, Ghalami-Choobar B. Evaluating the efficacy of recyclable nanostructured adsorbents for rapid removal of methylparaben from aqueous solutions. ENVIRONMENTAL RESEARCH 2024; 244:117964. [PMID: 38135102 DOI: 10.1016/j.envres.2023.117964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 12/12/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
In this study, we evaluate the efficiency of two novel nanostructured adsorbents - chitosan-graphitic carbon nitride@magnetite (CS-g-CN@Fe3O4) and graphitic carbon nitride@copper/zinc nanocomposite (g-CN@Cu/Zn NC) - for the rapid removal of methylparaben (MPB) from water. Our characterization methods, aimed at understanding the adsorbents' structures and surface areas, informed our systematic examination of influential parameters including sonication time, adsorbent dosage, initial MPB concentration, and temperature. We applied advanced modeling techniques, such as response surface methodology (RSM), generalized regression neural network (GRNN), and radial basis function neural network (RBFNN), to evaluate the adsorption process. The adsorbents proved highly effective, achieving maximum adsorption capacities of 255 mg g-1 for CS-g-CN@Fe3O4 and 218 mg g-1 for g-CN@Cu/Zn NC. Through genetic algorithm (GA) optimization, we identified the optimal conditions for the highest MPB removal efficiency: a sonication period of 12.00 min and an adsorbent dose of 0.010 g for CS-g-CN@Fe3O4 NC, with an MPB concentration of 17.20 mg L-1 at 42.85 °C; and a sonication time of 10.25 min and a 0.011 g dose for g-CN@Cu/Zn NC, with an MPB concentration of 13.45 mg L-1 at 36.50 °C. The predictive accuracy of the RBFNN and GRNN models was confirmed to be satisfactory. Our findings demonstrate the significant capabilities of these synthesized adsorbents in effectively removing MPB from water, paving the way for optimized applications in water purification.
Collapse
Affiliation(s)
- Farshad Salehi Nasab
- Department of Chemistry, Faculty of Science, University of Guilan, P.O. Box: 19141, Rasht, Iran
| | | | - Bahram Ghalami-Choobar
- Department of Chemistry, Faculty of Science, University of Guilan, P.O. Box: 19141, Rasht, Iran.
| |
Collapse
|
5
|
Gnanasekaran L, Manoj D, Rajendran S, Gracia F, Jalil AA, Chen WH, Soto-Moscoso M, Gracia-Pinilla MA. Mesoporous NiO/Ni 2O 3 nanoflowers for favorable visible light photocatalytic degradation of 4-chlorophenol. ENVIRONMENTAL RESEARCH 2023; 236:116790. [PMID: 37517483 DOI: 10.1016/j.envres.2023.116790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/18/2023] [Accepted: 07/28/2023] [Indexed: 08/01/2023]
Abstract
The present study highlights the treatment of industrial effluent, which is one of the most life-threatening factors. Herein, for the first time, two types of NiO (green and black) photocatalysts were prepared by facile chemical precipitation and thermal decomposition methods separately. The synthesized NiO materials were demonstrated with various instrumental techniques for finding their characteristics. The X-ray diffraction studies (XRD) and X-ray photoelectron spectroscopy (XPS) revealed the presence of Ni2O3 in black NiO material. The transmission electron microscopic (TEM) images engrained the nanospherical shaped green NiO and nanoflower shaped black NiO/Ni2O3 materials. Further, the band gap of black NiO nanoflower was 2.9 eV compared to green NiO having 3.8 eV obtained from UV-vis spectroscopy. Meanwhile, both NiO catalysts were employed for visible light degradation, which yields a 60.3% efficiency of black NiO comparable to a 4.3% efficiency of green NiO within 180 min of exposure. The higher degrading efficiency of black NiO was due to the presence of Ni2O3 and the development of pores, which was evident from the Barrett-Joyner-Halenda (BJH) method. Type IV hysteresis was observed in black NiO nanoflowers with high surface area and pore size measurements. This black NiO/Ni2O3 synthesized from the thermal decomposition method has promoted better photocatalytic degradation of 4-chlorophenol upon exposure to visible light and is applicable for other industrial pollutants.
Collapse
Affiliation(s)
- Lalitha Gnanasekaran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile; University Centre for Research & Development, Department of Mechanical Engineering, Chandigarh University, Mohali, Punjab, 140413, India
| | - Devaraj Manoj
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore, 641021, Tamil Nadu, India; Centre for Material Chemistry, Karpagam Academy of Higher Education, Coimbatore, 641021, Tamil Nadu, India
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile.
| | - F Gracia
- Department of Chemical Engineering, Biotechnology and Materials, University of Chile, Beauchef 851, 6th Floor, Santiago, Chile
| | - A A Jalil
- Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM Johor Bahru, Johor, Malaysia; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung, 411, Taiwan
| | | | - M A Gracia-Pinilla
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Físico-Matemáticas, Av. Universidad, Cd. Universitaria, San Nicolás de los Garza, NL, Mexico; University of Twente, Mesoscale Chemical System, MESA+ Institute, Enschede 7500AE, The Netherlands
| |
Collapse
|
6
|
Ton-That L, Huynh TNL, Duong BN, Nguyen DK, Nguyen NA, Pham VH, Ho TH, Dinh VP. Kinetic studies of the removal of methylene blue from aqueous solution by biochar derived from jackfruit peel. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1266. [PMID: 37787870 DOI: 10.1007/s10661-023-11867-6] [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: 05/31/2023] [Accepted: 09/11/2023] [Indexed: 10/04/2023]
Abstract
Kinetic studies play an instrumental role in determining the most appropriate reaction rate model for industrial-scale applications. This study focuses on the kinetics of methylene blue (MB) adsorption from aqueous solutions by biochar derived from jackfruit peel. Various kinetic models, including pseudo-first-order (PFO), pseudo-second-order (PSO), intra-diffusion, and Elovich models, were applied to study MB adsorption kinetics of jackfruit peel biochar. The experiments were performed with two initial concentrations of MB (24.23 mg/L and 41.42 mg/L) over a span of 240 min. Our findings emphasized that the Elovich model provided the best fit of the experimental data for MB adsorption. When compared to other materials, biochar from jackfruit peel emerges as an eco-friendly adsorbent for dye decolorization, with potential applications in the treatment of environmental pollution.
Collapse
Affiliation(s)
- Loc Ton-That
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang City, 550000, Vietnam
| | | | - Bich-Ngoc Duong
- Institute of Interdisciplinary Social Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 700000, Vietnam
| | - Duy-Khoi Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang City, 550000, Vietnam
| | - Ngoc-An Nguyen
- Institute of Interdisciplinary Social Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 700000, Vietnam
| | - Van-Hien Pham
- Institute of Applied Materials Science, VAST, TL29, Thanh Loc Ward, Dist. 12, Ho Chi Minh City, 700000, Vietnam
| | - Thien-Hoang Ho
- Dong Nai University, 09 Le Quy Don Street, Tan hiep Ward, Bien Hoa City, Ddong Nai province, 76100, Vietnam
| | - Van-Phuc Dinh
- Institute of Interdisciplinary Social Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 700000, Vietnam.
| |
Collapse
|
7
|
Zhang Y, Plesner TJ, Ouyang Y, Zheng YC, Bouhier E, Berentzen EI, Zhang M, Zhou P, Zimmermann W, Andersen GR, Eser BE, Guo Z. Computer-aided discovery of a novel thermophilic laccase for low-density polyethylene degradation. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131986. [PMID: 37413797 DOI: 10.1016/j.jhazmat.2023.131986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/21/2023] [Accepted: 07/01/2023] [Indexed: 07/08/2023]
Abstract
Polyethylene (PE) and industrial dyes are recalcitrant pollutants calling for the development of sustainable solutions for their degradation. Laccases have been explored for removal of contaminants and pollutants, including dye decolorization and plastic degradation. Here, a novel thermophilic laccase from PE-degrading Lysinibaccillus fusiformis (LfLAC3) was identified through a computer-aided and activity-based screening. Biochemical studies of LfLAC3 indicated its high robustness and catalytic promiscuity. Dye decolorization experiments showed that LfLAC3 was able to degrade all the tested dyes with decolorization percentage from 39% to 70% without the use of a mediator. LfLAC3 was also demonstrated to degrade low-density polyethylene (LDPE) films after eight weeks of incubation with either crude cell lysate or purified enzyme. The formation of a variety of functional groups was detected using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Damage on the surfaces of PE films was observed via scanning electron microscopy (SEM). The potential catalytic mechanism of LfLAC3 was disclosed by structure and substrate-binding modes analysis. These findings demonstrated that LfLAC3 is a promiscuous enzyme that has promising potential for dye decolorization and PE degradation.
Collapse
Affiliation(s)
- Yan Zhang
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | - Thea Jess Plesner
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | - Yi Ouyang
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | - Yu-Cong Zheng
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Straße10, 35043 Marburg, Germany
| | - Etienne Bouhier
- Department of Biological Engineering, University of Technology of Compiegne, Compiegne, France
| | | | - Mingliang Zhang
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark; Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Pengfei Zhou
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark; Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Product Processing, Guangzhou 510610, China
| | - Wolfgang Zimmermann
- Institute of Analytical Chemistry, Leipzig University, 04103 Leipzig, Germany
| | - Gregers Rom Andersen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark
| | - Bekir Engin Eser
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | - Zheng Guo
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark.
| |
Collapse
|