1
|
Vinayagam R, Nagendran V, Goveas LC, Narasimhan MK, Varadavenkatesan T, Samanth A, Selvaraj R. Machine learning, conventional and statistical physics modeling of 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicide removal using biochar prepared from Vateria indica fruit biomass. CHEMOSPHERE 2024; 350:141130. [PMID: 38185425 DOI: 10.1016/j.chemosphere.2024.141130] [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: 11/09/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
The adsorption properties of 2,4-Dichlorophenoxyacetic acid (2,4-D) onto biochar, obtained through HCl-assisted hydrothermal carbonization process of Vateria indica fruits (VI-BC), were extensively studied using traditional and statistical physics approaches. The traditional adsorption investigations encompassed kinetics, equilibrium, and thermodynamics studies. Subsequently, the Hill statistical physics model was employed to interpret the mechanism. Also, artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) machine learning tools were successfully employed to model the adsorption data wherein both models had high prediction potential (R2 > 0.99). The outcomes demonstrated that the produced VI-BC exhibited remarkable adsorptive traits, having a considerable specific surface area (111.54 m2/g), pore size (5.89 nm), a variety of functional groups, and appropriate attributes for efficiently adsorbing 2,4-D. For 10 mg/L 2,4-D, at pH 2.0 and with 0.3 g/L dose, an impressive 91.67% adsorption efficiency was achieved within a 120-min. Pseudo-second-order model aptly depicted the kinetic behavior of 2,4-D adsorption, while the Freundlich model provided a more accurate representation of the isotherms. 2,4-D maximum adsorption capacity stood at 131.39 mg/g at 303 K. The Hill statistical physics model elucidated that the adsorption primarily occurred via physisorption mechanisms, involving electrostatic attractions, π-π conjugation, and pore filling. This conclusion was further substantiated by post-adsorption characterization of the VI-BC. Thermodynamic analysis indicated that the interactions between VI-BC and 2,4-D were favorable, spontaneous, and exothermic. The calculated low energy of adsorption (1.255 kJ/mol) and ΔH° value (-20.49 kJ/mol) further supported physisorption as the dominant mechanism. In summary, this study underscores the significant potential of the newly developed biochar as a promising alternative material for efficiently removing the 2,4-D herbicide from polluted environments.
Collapse
Affiliation(s)
- Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Vasundra Nagendran
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Louella Concepta Goveas
- Nitte (Deemed to Be University), Department of Biotechnology Engineering, NMAM Institute of Technology (NMAMIT), Nitte, India
| | - Manoj Kumar Narasimhan
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Potheri, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India
| | - Thivaharan Varadavenkatesan
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Adithya Samanth
- Department of Chemical Engineering, 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.
| |
Collapse
|
2
|
Lima ETG, Sales ÉDS, Saraiva RDA, Rachide Nunes R. Study on the auxin-like activity of organic compounds extracted from corn waste hydrochar prepared by hydrothermal carbonization. ENVIRONMENTAL TECHNOLOGY 2024:1-10. [PMID: 38190259 DOI: 10.1080/09593330.2023.2298663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 12/15/2023] [Indexed: 01/10/2024]
Abstract
This work studied the auxin-like activity of liquid and solid hydrochar from aboveground corn biomass prepared using hydrothermal carbonization (HTC). Understanding the action of organic compounds in regulating plant metabolism is important to develop strategies to improve plant growth and production. Bioassays were performed by testing liquid hydrochar concentrations in the range of 0.0557-5570.0 mg carbon L-1; and solid hydrochar (via extracted dissolved organic matter, DOM) in the range of 0.026-2600.0 mg carbon L-1, using seeds of Lactuca sativa. SEM, ATR-FTIR, and Py-GC/MS were applied to assess the effect of HTC on hydrochar production/composition. Liquid hydrochar presented an intense bioactivity, completely inhibiting the germination of testing seeds at higher concentrations. Liquid hydrochar also was considerably more bioactive. Py-GC/MS allowed the identification of the molecules involved in IAA-like effects: carboxylic acids (linear and aromatic) and amino acids. The concentration of more bioactive molecules, rather than their simple presence in the hydrochar fraction, determined the bio-stimulating effect, besides an excellent linear regression between the auxin-like effect and the concentration of active molecules.
Collapse
Affiliation(s)
| | | | | | - Ramom Rachide Nunes
- Department of Chemistry, Federal Rural University of Pernambuco, Recife, Brazil
| |
Collapse
|
3
|
Si H, Zhao C, Wang B, Liang X, Gao M, Jiang Z, Yu H, Yang Y, Gu Z, Ogino K, Chen X. Liquid-solid ratio during hydrothermal carbonization affects hydrochar application potential in soil: Based on characteristics comparison and economic benefit analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 335:117567. [PMID: 36857889 DOI: 10.1016/j.jenvman.2023.117567] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/28/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Returning straw-like agricultural waste to the field by converting it into hydrochar through hydrothermal carbonization (HTC) is an important way to realize resource utilization of waste, soil improvement, and carbon sequestration. However, the large-scale HTC is highly limited by the large water consumption and waste liquid pollution. Here, we propose strategies to optimize the liquid-solid ratio (LSR) of HTC, and comprehensively evaluate the stability, soil application potential, and economic benefits of corn stover-based hydrochar under different LSRs. The results showed that the total amount of dissolved organic carbon of hydrochars increased by 55.0% as LSR reducing from 10:1 to 2:1, while the element content, thermal stability, carbon fixation potential, specific surface area, pore volume, and functional group type were not obviously affected. The specific surface area and pore volume of hydrochar decreased by 61.8% and 70.9% as LSR reduced to 1:1, due to incomplete carbonization. According to the gray relation, hydrochar derived at LSR of 10:1 and followed by 2:1 showed greatest relation degree of 0.80 and 0.70, respectively, indicating better soil application potential. However, reducing LSR from 10:1 to 2:1 made the income of single process production increased from -388 to 968 ¥, and the wastewater generation decreased by 80%. Considering the large-scale application of HTC in fields for farmland improvement and environmental remediation, the comprehensive advantages of optimized LSR will be further highlighted.
Collapse
Affiliation(s)
- Hongyu Si
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Changkai Zhao
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Bing Wang
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China; Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi, Tokyo, 184-8588, Japan.
| | - Xiaohui Liang
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Mingjie Gao
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Zhaoxia Jiang
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Hewei Yu
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Yuanyuan Yang
- Shandong Artificial Intelligence Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Zhijie Gu
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi, Tokyo, 184-8588, Japan
| | - Kenji Ogino
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi, Tokyo, 184-8588, Japan
| | - Xiuxiu Chen
- Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China.
| |
Collapse
|
4
|
Lin Z, Wang R, Tan S, Zhang K, Yin Q, Zhao Z, Gao P. Nitrogen-doped hydrochar prepared by biomass and nitrogen-containing wastewater for dye adsorption: Effect of nitrogen source in wastewater on the adsorption performance of hydrochar. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 334:117503. [PMID: 36796192 DOI: 10.1016/j.jenvman.2023.117503] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Dye wastewater has become one of the main risk sources of environmental pollution due to its high toxicity and difficulty in degradation. Hydrochar prepared by hydrothermal carbonization (HTC) of biomass has abundant surface oxygen-containing functional groups, and therefore is used as an adsorbent to remove water pollutants. The adsorption performance of hydrochar can be enhanced after improving its surface characteristics through nitrogen-doping (N-doping). In this study, wastewater rich in nitrogen sources such as urea, melamine and ammonium chloride were selected as the water source for the preparation of HTC feedstock. The N atoms were doped in the hydrochar with a content of 3.87%-5.70%, and mainly in the form of pyridinic-N, pyrrolic-N and graphitic-N, which changed the acidity and basicity of the hydrochar surface. The N-doped hydrochar adsorbed methylene blue (MB) and congo red (CR) in wastewater through pore filling, Lewis acid-base interaction, hydrogen bond, and π-π interaction, and the maximum adsorption capacities of those were obtained with 57.52 mg/g and 62.19 mg/g, respectively. However, the adsorption performance of N-doped hydrochar was considerably affected by the acid-base property of the wastewater. In a basic environment, the surface carboxyl of the hydrochar exhibited a high negative charge and thus an enhanced electrostatic interaction with MB. Whereas, the hydrochar surface was positively charged in an acid environment by binding H+, resulting in an enhanced electrostatic interaction with CR. Therefore, the adsorption efficiency of MB and CR by N-doped hydrochar can be tuned by adjusting the nitrogen source and the pH of the wastewater.
Collapse
Affiliation(s)
- Zhaohua Lin
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Ruikun Wang
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China.
| | - Shiteng Tan
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Kai Zhang
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Qianqian Yin
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Zhenghui Zhao
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| | - Peng Gao
- Department of Power Engineering, North China Electric Power University, Baoding, 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China; Baoding Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding, 071003, Hebei, China
| |
Collapse
|
5
|
Gajera ZR, Mungray AA, Rene ER, Mungray AK. Hydrothermal carbonization of cow dung with human urine as a solvent for hydrochar: An experimental and kinetic study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 327:116854. [PMID: 36455439 DOI: 10.1016/j.jenvman.2022.116854] [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: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Hydrothermal carbonization (HTC) is the most cost-effective, environmentally friendly, and efficient physicochemical and biochemical process for converting biomass to products with added value. The objective and novelty of this work is to produce and investigate the qualities of hydrochar fuel (as a solid fuel) from cow manure using human urine as a solvent in order to find a suitable replacement for conventional fuel (i.e., coal). HTC based studies were conducted in batch, at three different reaction temperatures (180 °C, 200 °C, and 220 °C) and two different reaction periods (2 and 4 h). For kinetic analysis and reaction mechanism of the combustion behavior of the produced hydrochar, the model free kinetic methods and the z-master plot were used. From the model free kinetics methods, it was observed that the resultant optimum average activation energy and pre-exponential factor for the produced hydrochar at 180 °C and 2 h reaction period (HTC_180_2) were ∼120 kJ/mol and ∼5.59 × 1025 sec-1, respectively. In addition, the little variation between ΔEα and ΔHα (∼10 kJ/mol) suggests that the combustion of produced hydrochar (HTC_180_2) occurred with minimal energy use. Furthermore, the hydrochar exhibited its highest heating value at 200 °C for 4 h (HTC_200_4) which was 1.44 times higher than the raw dung (13.4 MJ/kg) due to the HTC process. The produced hydrochar demonstrated a significant improvement compared to the conventional solvent, i.e. water.
Collapse
Affiliation(s)
- Zavin R Gajera
- Department of Chemical Engineering, S.V. National Institute of Technology, Surat, 395007, Gujarat, India
| | - Alka A Mungray
- Department of Chemical Engineering, S.V. National Institute of Technology, Surat, 395007, Gujarat, India
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Arvind Kumar Mungray
- Department of Chemical Engineering, S.V. National Institute of Technology, Surat, 395007, Gujarat, India.
| |
Collapse
|
6
|
Nayak S, Goveas LC, Selvaraj R, Vinayagam R, Manickam S. Advances in the utilisation of carbon-neutral technologies for a sustainable tomorrow: A critical review and the path forward. BIORESOURCE TECHNOLOGY 2022; 364:128073. [PMID: 36216285 DOI: 10.1016/j.biortech.2022.128073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
Global industrialisation and overexploitation of fossil fuels significantly impact greenhouse gas emissions, resulting in global warming and other environmental problems. Hence, investigations on capturing, storing, and utilising atmospheric CO2 create novel technologies. Few microorganisms, microalgae, and macroalgae utilise atmospheric CO2 for their growth and reduce atmospheric CO2 levels. Activated carbon and biochar from biomasses also capture CO2. Nanomaterials such as metallic oxides, metal-organic frameworks, and MXenes illustrate outstanding adsorption characteristics, and convert CO2 to carbon-neutral fuels, creating a balance between CO2 production and elimination, thus zeroing the carbon footprint. The need for a paradigm shift from fossil fuels and promising technologies on renewable energies, carbon capture mechanisms, and carbon sequestration techniques that help reduce CO2 emissions for a better tomorrow are reviewed to achieve the world's sustainable development goals. The challenges and possible solutions with future perspectives are also discussed.
Collapse
Affiliation(s)
- Sneha Nayak
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Louella Concepta Goveas
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Raja Selvaraj
- 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
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Jalan Tungku Link Gadong, Bandar Seri Begawan BE1410, Brunei Darussalam.
| |
Collapse
|
7
|
Wang L, Li D, Li X, Liang H, Yue W, Wang L, Pan Y, Huang Y. Recirculation of activated sludge for coagulant synthesis under hydrothermal conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66519-66535. [PMID: 35503154 DOI: 10.1007/s11356-022-20490-w] [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: 02/28/2022] [Accepted: 04/24/2022] [Indexed: 06/14/2023]
Abstract
A hypothesis was proposed that the activated sludge was converted into hydrochar full of phenolic hydroxyl and then was made into coagulant by graft copolymerization. The results show that under the addition of HCl, the content of phenolic hydroxyl on the surface of hydrochar (SBC) under hydrothermal conditions increased sharply, up to 1.586 mmol/g, showing that HCl dosage of 0.10 g/g dry sludge and holding time of 4 h was recommended. Under graft copolymerization with the addition of DMC, the coagulant was synthesized. Based on the analysis by FTIR, XPS, zeta potential, etc., the possible synthesis route of coagulant from SBC was that phenolic hydroxyl on SBC was activated by the initiator and then the polymerization between SBC and DMC was triggered. The optimal grafting conditions are gotten. It was named as SBCHCl0.10 g, 4 h-g-DMC0.7. The removal by SBCHCl0.10 g, 4 h-g-DMC0.7 on COD and turbidity in domestic wastewater is up to 69% and 93%, respectively. The component of COD indicated that almost all particulate COD and most of colloidal COD are removed. On the contrary, the removal on dissolved COD can be neglected. Most of NH3-N and P is kept in the wastewater. This is in favor of subsequent reuse and biological treatment.
Collapse
Affiliation(s)
- Lu Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Dapeng Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China.
| | - Xueying Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Hui Liang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Wei Yue
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Lingzhi Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Yang Pan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| | - Yong Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No.1 Kerui Road, Hi-tech Development District, No.99 Xuefu Road, Suzhou, Jiangsu, China
| |
Collapse
|
8
|
Núñez-Delgado A, Dominguez JR, Zhou Y, Race M. New trends on green energy and environmental technologies, with special focus on biomass valorization, water and waste recycling: editorial of the special issue. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115209. [PMID: 35533594 DOI: 10.1016/j.jenvman.2022.115209] [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: 03/22/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
In this editorial piece, the Editors of the Virtual Special Issue (VSI) "New Trends on Green Energy and Environmental Technologies, with Special Focus on Biomass Valorization, Water and Waste Recycling", present summarized data corresponding to the accepted submissions, as well as additional comments regarding the thematic of the VSI. Overall, 83 manuscripts were received, with final publication of those having the highest quality, accepted after peer-reviewing. The Editors think that the result is a set of very interesting papers that increase the knowledge on the matter, and which would be useful for researchers and the whole society.
Collapse
Affiliation(s)
- Avelino Núñez-Delgado
- Dept. Soil Sci. and Agric. Chem., Univ. Santiago de Compostela, Engineering Polytech. School, Campus Univ. S/n, 27002, Lugo, Spain.
| | - Joaquín R Dominguez
- Department of Chemical Engineering and Physical Chemistry, University of Extremadura, Spain
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan Province, China
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via di Biasio 43, 03043, Cassino, Italy
| |
Collapse
|
9
|
Bijla L, Aissa R, Laknifli A, Bouyahya A, Harhar H, Gharby S. Spent coffee grounds: A sustainable approach toward novel perspectives of valorization. J Food Biochem 2022; 46:e14190. [PMID: 35553079 DOI: 10.1111/jfbc.14190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/03/2022] [Accepted: 03/14/2022] [Indexed: 12/30/2022]
Abstract
Coffee is one of the most popular and preferred drinks in the world, being consumed for its refreshing and energizing properties. As a result, the consumption of coffee generates millions of tons of waste, in particular, spent coffee grounds (SCG). On the contrary, food waste recovery is an incredibly sustainable and convenient solution to the growing need for materials, fuels, and chemicals. SCG has been developed as a precious resource of several high value-added products (oil, proteins, minerals, fatty acids, sterols….). Thus, a transformative pathway to a circular economy that involves the valorization of coffee wastes and by-products is currently attracting the attention of researchers worldwide. The potential growth of scientific papers and publications promotes a comprehensive review to determine the research hotspots, knowledge structure, and to consider future avenues and challenges. Therefore, in this paper, we conducted a systematic review based on 275 indexed papers on the composition and valorization of SCG as a prospective environmental source. PRACTICAL APPLICATIONS: SCG can be applied in agro-food industries.
Collapse
Affiliation(s)
- Laila Bijla
- Laboratory Biotechnology, Materials and Environment Team, LBME, Faculty Polydisciplinary of Taroudant, University Ibn Zohr, Agadir, Morocco
| | - Rabha Aissa
- Bioprocesses and Environment Team, LASIME, Ecole Supérieure de Technologie d'Agadir, Ibnou Zohr University, Agadir, Morocco
| | - Abdellatif Laknifli
- Laboratory Biotechnology, Materials and Environment Team, LBME, Faculty Polydisciplinary of Taroudant, University Ibn Zohr, Agadir, Morocco
| | - Abdelhakim Bouyahya
- Laboratoire de Materiaux, Nanotechnologie et Environnement LMNE, Faculte des Sciences, Universite Mohammed V de rabat, Rabat, Morocco
| | - Hicham Harhar
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Genomic Center of Human Pathologies, Mohammed V University, Rabat, Morocco
| | - Said Gharby
- Laboratory Biotechnology, Materials and Environment Team, LBME, Faculty Polydisciplinary of Taroudant, University Ibn Zohr, Agadir, Morocco
| |
Collapse
|