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Oladzad S, Fallah N, Mahboubi A, Afsham N, Taherzadeh MJ, Toghyani J. Comparison of acid and hydrothermal pretreatments of date waste for value creation. Sci Rep 2024; 14:18056. [PMID: 39103400 PMCID: PMC11300665 DOI: 10.1038/s41598-024-68879-6] [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: 04/30/2024] [Accepted: 07/29/2024] [Indexed: 08/07/2024] Open
Abstract
The production of date syrup yields a substantial amount of date press cake (DPC), fibrous and moisturising material with great potential for generating value through bioprocessing. However, the recalcitrant structure of DPC affects the yield of products in bioprocesses. To boost the accessibility of the structure as well as increase the soluble fraction of carbohydrates and facilitate further enzymatic hydrolysis, hydrothermal and dilute acid (0.5% (v/v) sulfuric acid) pretreatments as cost-effective and feasible methods were applied on DPC at relatively low temperatures (80, 100, 120 and 140 °C) and reaction times (60 and 90 min). The success in pretreatment was then evaluated by a post-enzymatic treatment using an enzyme cocktail of cellulases and hemicelluloses. Based on total accessible sugar with minimum produced inhibitors, an optimal operating condition was considered acid pretreatment at 120 °C for 90 min with a 55.02% increase in total sugar yield. To explore the potential use of pretreated DPC, an anaerobic digestion was conducted on untreated and acid-pretreated DPC at 120 °C for 90 min. The results showed that pretreatment increased the total bioproduct yield, including hydrogen, ethanol, and volatile fatty acid yields, by 59.75%. This demonstrates the significant impact of pretreatment on product yields in a bioprocess.
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Affiliation(s)
- Sepideh Oladzad
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, 15875-4413, Iran
| | - Narges Fallah
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, 15875-4413, Iran.
| | - Amir Mahboubi
- Swedish Centre for Resource Recovery, The University of Borås, 501 90, Borås, Sweden
| | - Neda Afsham
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, 15875-4413, Iran
| | - Mohammad J Taherzadeh
- Swedish Centre for Resource Recovery, The University of Borås, 501 90, Borås, Sweden
| | - Javad Toghyani
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, 15875-4413, Iran
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Ajmal M, Shao Y, Huo W, Lu W. Deep-dewatering of sewage sludge using double dielectric barrier discharge (DDBD) plasma technology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168887. [PMID: 38016553 DOI: 10.1016/j.scitotenv.2023.168887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/12/2023] [Accepted: 11/23/2023] [Indexed: 11/30/2023]
Abstract
Deep dewatering of sewage sludge is essential for optimizing disposal and resource recovery. This study explores the potential of Double Dielectric Barrier Discharge (DDBD) plasma for enhancing waste activated sludge (WAS) dewatering. Key operational parameters (applied voltage, treatment duration, and air feeding rate) were systematically investigated using a two-step approach: Single Factor-at-a-Time (SFAT) and central composite design (CCD) within the response surface methodology (RSM) framework. The aim was to identify influential factors and their optimal settings for maximizing dewatering efficiency while minimizing energy usage. Higher applied voltages (30 kV) and longer treatment durations (40 min) notably improved % moisture reduction (%MR) (92.92 % and 94.35 %, respectively). ANOVA analysis emphasized the equal and substantial impact of applied voltage and treatment duration on %MR and energy efficiency (EE), whereas the air feeding rate exhibited no significant effect. However, it's worth noting that %MR and EE did not display a strictly linear relationship, suggesting complex interactions. Furthermore, two soft sensing models were developed: a quadratic model for %MR and a linear model for energy efficiency (EE). Results showed minimal reductions in TOC content, maintaining values between 13.68 % and 14.28 % compared to untreated sludge 14.37 %. The study also revealed that ROS generated by DDBD plasma played a key role in sludge disintegration, as observed through SEM and FTIR, enhancing dewatering efficiency by the destruction of sludge flocs and the transformation of organic substances. In conclusion, DDBD plasma technology offers a sustainable solution for effective sludge dewatering in WWTPs, preserving organic content.
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Affiliation(s)
- Muhammad Ajmal
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Yuchao Shao
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Weizhong Huo
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing 100084, China.
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3
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Yan Sim X, He N, Mohamed Abdul P, Keong Yeap S, Woh Hui Y, Foong Tiang M, Amru Indera Luthfi A, Fairuz Abdul Manaf S, Adela Bukhari N, Silvamany H, Ping Tan J. Fermentable sugar recovery from durian peel by using ultrasound-assisted chemical pretreatment. ULTRASONICS SONOCHEMISTRY 2024; 104:106811. [PMID: 38394823 PMCID: PMC10906534 DOI: 10.1016/j.ultsonch.2024.106811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/30/2023] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Durian peel, an abundant waste in Malaysia could be a potential substrate for fermentable sugar recovery for value-added biochemical production. Common pretreatment such as acid or alkaline pretreatment resulted in the need for extensive solid washing which generated wastewater. Herein, this study aims to introduce sonication on top of chemical pretreatment to destruct lignin and reduce the chemical usage during the durian peel pretreatment process. In this study, the morphology and the chemical composition of the pretreated durian peels were studied. The sugar yield produced from the chemical pretreatment and the combined ultrasound and chemical pretreatment were compared. The morphology and chemical structure of durian peels were investigated by Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR) analysis and X-ray diffraction (XRD). The SEM images showed that the structural change became more significant when sonication was introduced. Second, XRD profile indicated a relatively higher crystallinity index and FTIR spectra displayed a lower intensity of lignin and hemicellulose for ultrasound plus alkaline (UB) pretreatment as compared to acid, alkaline and ultrasound plus acid (UA) pretreatment. UB and UA pretreatment portrayed higher yield (376.60 ± 12.14 and 237.38 ± 3.96 mg reducing sugar/g dry biomass, respectively) than their controls without the application of ultrasound. Therefore, it could be concluded that ultrasound was able to intensify the fermentable sugar recovery from durian peel by inducing physical and chemical effect of cavitation to alter the morphology of durian peel. Fermentation of UB treated durian peel resulted in 2.68 mol hydrogen/mol consumed sugar and 131.56 mL/Lmedium/h of hydrogen productivity. This study is important because it will shed light on a way to handle durian waste disposal problems and generate fermentable sugars for the production of high value-added products.
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Affiliation(s)
- Xue Yan Sim
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan, Malaysia
| | - Ning He
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Peer Mohamed Abdul
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
| | - Swee Keong Yeap
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan, Malaysia
| | - Yew Woh Hui
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan, Malaysia
| | - Ming Foong Tiang
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
| | - Abdullah Amru Indera Luthfi
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
| | - Shareena Fairuz Abdul Manaf
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Nurul Adela Bukhari
- Energy and Environment Unit, Engineering & Processing Research Division, Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia
| | - Hemavathi Silvamany
- Sime Darby Plantation Research, Jalan Pulau Carey, 42960 Pulau Carey, Selangor, Malaysia
| | - Jian Ping Tan
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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Rodriguez-Quiroz ES, Olivares-Xometl O, Santacruz-Vázquez V, Santacruz-Vázquez C, Arellanes-Lozada P, Rubio-Rosas E. Production of Cellulosic Microfibers from Coffee Pulp via Alkaline Treatment, Bleaching and Acid Hydrolysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7607. [PMID: 38138748 PMCID: PMC10744440 DOI: 10.3390/ma16247607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/27/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023]
Abstract
The present work deals with the production of cellulosic microfibers (CMFs) from coffee pulp. The experimental development corresponds to an experimental design of three variables (concentration, temperature and time) of alkaline treatment for delignification, finding that concentration, temperature and time were the most representative variables. Higher delignification was achieved by bleaching cellulosic fibers, followed by acid hydrolysis, thus producing cellulosic fibers with an average diameter of 5.2 µm, which was confirmed using scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS). An X-ray diffraction (XRD) analysis revealed, via the crystallinity index, the presence of Type I cellulose and removal of lignocellulosic compounds through chemical treatments. The proximate chemical analysis (PChA) of coffee pulp helped to identify 17% of the crude fiber corresponding to the plant cell wall consisting of lignocellulosic compounds. The initial cellulose content of 26.06% increased gradually to 48.74% with the alkaline treatment, to 57.5% with bleaching, and to 64.7% with acid hydrolysis. These results attested to the rich cellulosic content in the coffee pulp.
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Affiliation(s)
- Eliud S. Rodriguez-Quiroz
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Blvd. 18 sur, Puebla 72570, Mexico; (E.S.R.-Q.); (O.O.-X.); (V.S.-V.)
| | - Octavio Olivares-Xometl
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Blvd. 18 sur, Puebla 72570, Mexico; (E.S.R.-Q.); (O.O.-X.); (V.S.-V.)
| | - Verónica Santacruz-Vázquez
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Blvd. 18 sur, Puebla 72570, Mexico; (E.S.R.-Q.); (O.O.-X.); (V.S.-V.)
| | - Claudia Santacruz-Vázquez
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Blvd. 18 sur, Puebla 72570, Mexico; (E.S.R.-Q.); (O.O.-X.); (V.S.-V.)
| | - Paulina Arellanes-Lozada
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Blvd. 18 sur, Puebla 72570, Mexico; (E.S.R.-Q.); (O.O.-X.); (V.S.-V.)
| | - Efraín Rubio-Rosas
- Centro Universitario de Vinculación y Transferencia de Tecnología, Benemérita Universidad Autónoma de Puebla, Prol. 24 sur y Av. San Claudio, Puebla 72570, Mexico;
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Das A, Mohanty K. Optimization of lignin extraction from bamboo by ultrasound-assisted organosolv pretreatment. BIORESOURCE TECHNOLOGY 2023; 376:128884. [PMID: 36925081 DOI: 10.1016/j.biortech.2023.128884] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
For a sustainable biorefinery, reduction in the recalcitrance of lignocellulosic biomass is very crucial for the efficient utilization of each fraction. The present work investigated an integrated pretreatment method to recover high-quality lignin along with the cellulose-rich pulp. An optimization study employing response surface methodology investigated the synergistic effects of ultrasound and organosolv pretreatment from Bambusa tulda (bamboo). The optimal condition (180 °C, 55 min, and 30 min sonication) resulted in 65.81 ± 2.40% of lignin yield with 95.37 ± 1.17% purity. A reduction in 7.85% yield and 1.54% purity of lignin with organosolv pretreatment highlighted the efficacy of sonication in lignin extraction. Ultrasound resulted in homolytic cleavage of the lignin-carbohydrate bond that enhanced delignification and increase the cellulose crystallinity. NMR, FTIR, GPC, and TGA of lignin suggested the superiority of sonication in maintaining lignin quality. A significant amount of β-O-4 linkages in extracted lignin is favorable for its subsequent valorization.
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Affiliation(s)
- Anindita Das
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Kaustubha Mohanty
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.
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Zirconium Phosphate Assisted Phosphoric Acid Co-Catalyzed Hydrolysis of Lignocellulose for Enhanced Extraction of Nanocellulose. Polymers (Basel) 2023; 15:polym15020447. [PMID: 36679327 PMCID: PMC9865806 DOI: 10.3390/polym15020447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
The high mechanical strength, large specific surface area, favorable biocompatibility, and degradability of nanocellulose (CNC) enable it to be a potential alternative to petroleum-based materials. However, the traditional preparation of CNCs requires a large amount of strong acid, which poses a serious challenge to equipment maintenance, waste liquid recycling, and economics. In this study, a solid and easily recoverable zirconium phosphate (ZrP) was used to assist in the phosphoric acid co-catalyzed hydrolysis of lignocellulose for extracting CNCs. Due to the presence of acidic phosphate groups, ZrP has a strong active center with a high catalytic activity. With the assistance of ZrP, the amount of phosphoric acid used in the reaction is significantly reduced, improving the equipment's durability and economic efficiency. The effects of the process conditions investigated were the phosphate acid concentration, reaction temperature, and reaction time on the yield of CNCs. The Box-Behnken design (BBD) method from the response surface methodology (RSM) was applied to investigate and optimize the preparation conditions. The optimized pre-treatment conditions were 49.27% phosphoric acid concentration, 65.38 °C reaction temperature, and 5 h reaction time with a maximal cellulose yield (48.33%). The obtained CNCs show a granular shape with a length of 40~50 nm and a diameter of 20~30 nm, while its high zeta potential (-24.5 mV) make CNCs present a stable dispersion in aqueous media. Moreover, CNCs have a high crystallinity of 78.70% within the crystal type of cellulose Ⅰ. As such, this study may pioneer the horizon for developing a green method for the efficient preparation of CNC, and it is of great significance for CNCs practical production process.
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Madusari S, Jamari SS, Nordin NIAA, Bindar Y, Prakoso T, Restiawaty E, Steven S. Hybrid Hydrothermal Carbonization and Ultrasound Technology on Oil Palm Biomass for Hydrochar Production. CHEMBIOENG REVIEWS 2022. [DOI: 10.1002/cben.202200014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sylvia Madusari
- University Malaysia Pahang Faculty of Chemical and Process Engineering Technology Lebuh Persiaran Tun Khalil Yaakob 26300 Pekan Malaysia
- Politeknik Kelapa Sawit Citra Widya Edukasi Production Technology of Plantation Crop Program Jl. Gapura No. 8 17520 Bekasi Indonesia
| | - Saidatul Shima Jamari
- University Malaysia Pahang Faculty of Chemical and Process Engineering Technology Lebuh Persiaran Tun Khalil Yaakob 26300 Pekan Malaysia
| | - Noor Ida Amalina Ahamad Nordin
- University Malaysia Pahang Faculty of Chemical and Process Engineering Technology Lebuh Persiaran Tun Khalil Yaakob 26300 Pekan Malaysia
| | - Yazid Bindar
- Institut Teknologi Bandung Department of Chemical Engineering Jl. Ganesha No. 10 40132 Bandung Indonesia
- Institut Teknologi Bandung Department of Bioenergy and Chemurgy Engineering Kampus Jatinangor 45363 Sumedang West Java Indonesia
| | - Tirto Prakoso
- Institut Teknologi Bandung Department of Chemical Engineering Jl. Ganesha No. 10 40132 Bandung Indonesia
- Institut Teknologi Bandung Department of Bioenergy and Chemurgy Engineering Kampus Jatinangor 45363 Sumedang West Java Indonesia
| | - Elvi Restiawaty
- Institut Teknologi Bandung Department of Chemical Engineering Jl. Ganesha No. 10 40132 Bandung Indonesia
- Institut Teknologi Bandung Department of Bioenergy and Chemurgy Engineering Kampus Jatinangor 45363 Sumedang West Java Indonesia
| | - Soen Steven
- Institut Teknologi Bandung Department of Chemical Engineering Jl. Ganesha No. 10 40132 Bandung Indonesia
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Gong YZ, Niu QY, Liu YG, Dong J, Xia MM. Development of multifarious carrier materials and impact conditions of immobilised microbial technology for environmental remediation: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120232. [PMID: 36155222 DOI: 10.1016/j.envpol.2022.120232] [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: 05/20/2022] [Revised: 09/13/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Microbial technology is the most sustainable and eco-friendly method of environmental remediation. Immobilised microorganisms were introduced to further advance microbial technology. In immobilisation technology, carrier materials distribute a large number of microorganisms evenly on their surface or inside and protect them from external interference to better treat the targets, thus effectively improving their bioavailability. Although many carrier materials have been developed, there have been relatively few comprehensive reviews. Therefore, this paper summarises the types of carrier materials explored in the last ten years from the perspective of structure, microbial activity, and cost. Among these, carbon materials and biofilms, as environmentally friendly functional materials, have been widely applied for immobilisation because of their abundant sources and favorable growth conditions for microorganisms. The novel covalent organic framework (COF) could also be a new immobilisation material, due to its easy preparation and high performance. Different immobilisation methods were used to determine the relationship between carriers and microorganisms. Co-immobilisation is particularly important because it can compensate for the deficiencies of a single immobilisation method. This paper emphasises that impact conditions also affect the immobilisation effect and function. In addition to temperature and pH, the media conditions during the preparation and reaction of materials also play a role. Additionally, this study mainly reviews the applications and mechanisms of immobilised microorganisms in environmental remediation. Future development of immobilisation technology should focus on the discovery of novel and environmentally friendly carrier materials, as well as the establishment of optimal immobilisation conditions for microorganisms. This review intends to provide references for the development of immobilisation technology in environmental applications and to further the improve understanding of immobilisation technology.
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Affiliation(s)
- You-Zi Gong
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Qiu-Ya Niu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, PR China.
| | - Yun-Guo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Jie Dong
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Meng-Meng Xia
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, PR China
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Cousin E, Namhaed K, Pérès Y, Cognet P, Delmas M, Hermansyah H, Gozan M, Alaba PA, Aroua MK. Towards efficient and greener processes for furfural production from biomass: A review of the recent trends. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157599. [PMID: 35901885 DOI: 10.1016/j.scitotenv.2022.157599] [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: 04/29/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
As mentioned in several recent reviews, biomass-based furfural is attracting increasing interest as a feasible alternative for the synthesis of a wide range of non-petroleum-derived compounds. However, the lack of environmentally friendly, cost-effective, and sustainable industrial procedures is still evident. This review describes the chemical and biological routes for furfural production. The mechanisms proposed for the chemical transformation of xylose to furfural are detailed, as are the current advances in the manufacture of furfural from biomass. The main goal is to overview the different ways of improving the furfural synthesis process. A pretreatment process, particularly chemical and physico-chemical, enhances the digestibility of biomass, leading to the production of >70 % of available sugars for the production of valuable products. The combination of heterogeneous (zeolite and polymeric solid) catalyst and biphasic solvent system (water/GVL and water/CPME) is regarded as an attractive approach, affording >75 % furfural yield for over 80 % of selectivity with the possibility of catalyst reuse. Microwave heating as an activation technique reduces reaction time at least tenfold, making the process more sustainable. The state of the art in industrial processes is also discussed. It shows that, when sulfuric acid is used, the furfural yields do not exceed 55 % for temperatures close to 180 °C. However, the MTC process recently achieved an 83 % yield by continuously removing furfural from the liquid phase. Finally, the CIMV process, using a formic acid/acetic acid mixture, has been developed. The economic aspects of furfural production are then addressed. Future research will be needed to investigate scaling-up and biological techniques that produce acceptable yields and productivities to become commercially viable and competitive in furfural production from biomass.
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Affiliation(s)
- Elsa Cousin
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Kritsana Namhaed
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Yolande Pérès
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Patrick Cognet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Michel Delmas
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Heri Hermansyah
- Biorefinery Lab, Bioprocess Engineering Program, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.
| | - Misri Gozan
- Biorefinery Lab, Bioprocess Engineering Program, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.
| | - Peter Adeniyi Alaba
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization (CCDCU), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500 Petaling Jaya, Malaysia; Department of Engineering, Lancaster University, Lancaster LA1 4YW, United Kingdom; Sunway Materials Smart Science & Engineering Research Cluster (SMS2E), Sunway University, No. 5 Jalan Universiti, Bandar Sunway, 47500 Petaling Jaya, Selangor, Malaysia
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10
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Hoo DY, Low ZL, Low DYS, Tang SY, Manickam S, Tan KW, Ban ZH. Ultrasonic cavitation: An effective cleaner and greener intensification technology in the extraction and surface modification of nanocellulose. ULTRASONICS SONOCHEMISTRY 2022; 90:106176. [PMID: 36174272 PMCID: PMC9519792 DOI: 10.1016/j.ultsonch.2022.106176] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 05/17/2023]
Abstract
With rising consumer demand for natural products, a greener and cleaner technology, i.e., ultrasound-assisted extraction, has received immense attention given its effective and rapid isolation for nanocellulose compared to conventional methods. Nevertheless, the application of ultrasound on a commercial scale is limited due to the challenges associated with process optimization, high energy requirement, difficulty in equipment design and process scale-up, safety and regulatory issues. This review aims to narrow the research gap by placing the current research activities into perspectives and highlighting the diversified applications, significant roles, and potentials of ultrasound to ease future developments. In recent years, enhancements have been reported with ultrasound assistance, including a reduction in extraction duration, minimization of the reliance on harmful chemicals, and, most importantly, improved yield and properties of nanocellulose. An extensive review of the strengths and weaknesses of ultrasound-assisted treatments has also been considered. Essentially, the cavitation phenomena enhance the extraction efficiency through an increased mass transfer rate between the substrate and solvent due to the implosion of microbubbles. Optimization of process parameters such as ultrasonic intensity, duration, and frequency have indicated their significance for improved efficiency.
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Affiliation(s)
- Do Yee Hoo
- School of Energy and Chemical Engineering, Xiamen University Malaysia, 43900 Sepang, Selangor Darul Ehsan, Malaysia
| | - Zhen Li Low
- School of Energy and Chemical Engineering, Xiamen University Malaysia, 43900 Sepang, Selangor Darul Ehsan, Malaysia
| | - Darren Yi Sern Low
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Siah Ying Tang
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| | - Khang Wei Tan
- School of Energy and Chemical Engineering, Xiamen University Malaysia, 43900 Sepang, Selangor Darul Ehsan, Malaysia.
| | - Zhen Hong Ban
- School of Energy and Chemical Engineering, Xiamen University Malaysia, 43900 Sepang, Selangor Darul Ehsan, Malaysia.
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11
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Lentil protein: Impact of different extraction methods on structural and functional properties. Heliyon 2022; 8:e11775. [DOI: 10.1016/j.heliyon.2022.e11775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/10/2022] [Accepted: 11/14/2022] [Indexed: 11/25/2022] Open
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12
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Biomass valorization by integrating ultrasonication and deep eutectic solvents: Delignification, cellulose digestibility and solvent reuse. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108587] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Solís Rosales SG, Sifuentes-Nieves I, Naranjo Naranjo L, González Morones P, Yáñez Macías R, Hernández Gámez JF, García Hernández Z, Hernández Hernández E. Insights on the performance of modified agave fibers on polypropylene matrix: physicochemical and mechanical features. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03228-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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14
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Thu Ha Tran T, Khanh Thinh Nguyen P. Enhanced hydrogen production from water hyacinth by a combination of ultrasonic-assisted alkaline pretreatment, dark fermentation, and microbial electrolysis cell. BIORESOURCE TECHNOLOGY 2022; 357:127340. [PMID: 35598775 DOI: 10.1016/j.biortech.2022.127340] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
In this study, hydrogen (H2) production from water hyacinth (WH) was enhanced by the integration of the ultrasonic-assisted alkaline (UAA) pretreatment, dark fermentation (DF), and microbial electrolysis cell (MEC). The results showed that UAA pretreatment improved around 350% in H2 production in the DF stage and nearly 400% in the whole process compared to un-pretreated. The H2 yield in the DF stage reached the maximum value of 110.4 mL/g-VS at a WH concentration of 20 g-TS/L. However, high concentrations of co-produced soluble metabolite products (SMPs) and suspended solid in DF effluent adversely affected the efficiency of the MEC stage. Consequently, a WH concentration of 5 g-TS/L was optimal for the UAA-DF-MEC process that achieved the highest H2 yield of 565.8 mL/g-VS. It suggests that other auxiliary processes (e.g., dilution, centrifugation, effective methanogen inhibition, etc.) need to be developed to further improve the H2 production from WH via the UAA-DF-MEC process.
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Affiliation(s)
- Thi Thu Ha Tran
- Faculty of Environment, Ho Chi Minh City University of Natural Resources and Environment, Tan Binh District, Ho Chi Minh City, Viet Nam
| | - Phan Khanh Thinh Nguyen
- Department of Chemical and Biological Engineering, Gachon University, Seongnam, Gyeonggi-do 13120, Republic of Korea.
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15
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An Innovative, Green Cascade Protocol for Grape Stalk Valorization with Process Intensification Technologies. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Valorization of agri-food residues to produce bio-based platform chemicals will enhance the transition to the bio-economy era. To this end, a sustainable process has been developed for the overall valorization of grape stalks (GS) according to a circular approach, starting from the lignin fraction to further deal with the cellulose-rich residue. This non-conventional protocol fully adheres to green chemistry principles, exploiting the so-called enabling technologies—mainly ultrasound and microwaves—for energy-saving innovative processes. Firstly, ultrasound-assisted extraction (UAE, 40 kHz, 200 W) demonstrated to be an excellent technique for GS delignification combined with natural deep eutectic solvents (NaDESs). Delignification enables isolation of the pertinent lignin framework and the potential to obtain a polyphenol-rich liquid fraction, focusing on the valorization of GS as source of bioactive compounds (BACs). Among the NaDESs employed, the combination of choline chloride (ChCl) and levulinic acid (LevA) (ChLevA) presented noteworthy results, enabling a delignification higher than 70%. LevA is one of the top-value biobased platform chemicals. In this work, a flash microwave (MW)-assisted process was subsequently applied to the cellulose-rich fraction remained after delignification, yielding 85% LevA. The regeneration of this starting compound to produce ChLevA can lead to a further biomass delignification cycle, thus developing a new cascade protocol for a full valorization of GS.
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16
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Ultrasonic Processing of Food Waste to Generate Value-Added Products. Foods 2022; 11:foods11142035. [PMID: 35885279 PMCID: PMC9319240 DOI: 10.3390/foods11142035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/04/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Ultrasonic processing has a great potential to transform waste from the food and agriculture industry into value-added products. In this review article, we discuss the use of ultrasound for the valorisation of food and agricultural waste. Ultrasonic processing is considered a green technology as compared to the conventional chemical extraction/processing methods. The influence of ultrasound pre-treatment on the soluble chemical oxygen demand (SCOD), particle size, and cell wall content of food waste is first discussed. The use of ultrasonic processing to produce/extract bioactives such as oil, polyphenolic, polysaccharides, fatty acids, organic acids, protein, lipids, and enzymes is highlighted. Moreover, ultrasonic processing in bioenergy production from food waste such as green methane, hydrogen, biodiesel, and ethanol through anaerobic digestion is also reviewed. The conversion of waste oils into biofuels with the use of ultrasound is presented. The latest developments and future prospective on the use of ultrasound in developing energy-efficient methods to convert food and agricultural waste into value-added products are summarised.
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17
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Lee KH, Lee SK, Lee J, Kim S, Kim SW, Park C, Yoo HY. Energy-efficient glucose recovery from chestnut shell by optimization of NaOH pretreatment at room temperature and application to bioethanol production. ENVIRONMENTAL RESEARCH 2022; 208:112710. [PMID: 35026183 DOI: 10.1016/j.envres.2022.112710] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Biofuel policies are currently being implemented globally to reduce greenhouse gas emissions. The recent European regulation, Renewable Energy Directive (RED) II, states that renewable resources should be used as raw materials. In this study, chestnut shell (CNS), a food processing residue, was utilized as a feedstock for bioethanol production. Statistical optimization was performed to improve biomass-to-glucose conversion (BtG) from the CNS. In order to design an energy-efficient process, the pretreatment was fixed at room temperature in the numerical optimization. The optimal conditions derived from the predicted model are as follows: temperature of 25 °C, reaction time of 2.8 h, and NaOH concentration of 1.9% (w/w). Under optimal conditions, both predicted and experimental BtG were 31.0%, while BtG was approximately 3.3-fold improved compared to the control group (without pretreatment). The recovered glucose was utilized for bioethanol fermentation by Saccharomyces cerevisiae K35 and the ethanol yield was achieved to be 98%. Finally, according to the mass balance based on 1000 g CNS, glucose of 310 g can be recovered by the pretreatment; the bioethanol production was approximately 155 g. This strategy suggests a direction to utilize CNS as a potential feedstock for biorefinery through the design of an economical and energy-efficient pretreatment process by lowering the reaction temperature to room temperature.
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Affiliation(s)
- Kang Hyun Lee
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Soo Kweon Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul, 02841, Republic of Korea.
| | - Jeongho Lee
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Seunghee Kim
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
| | - Seung Wook Kim
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul, 02841, Republic of Korea.
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea.
| | - Hah Young Yoo
- Department of Biotechnology, Sangmyung University, 20 Hongjimun 2-Gil, Jongno-Gu, Seoul, 03016, Republic of Korea.
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18
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Delignification efficiency of various types of biomass using microwave-assisted hydrotropic pretreatment. Sci Rep 2022; 12:4561. [PMID: 35296788 PMCID: PMC8927152 DOI: 10.1038/s41598-022-08717-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/02/2022] [Indexed: 11/10/2022] Open
Abstract
The use of a method of an effective delignification of lignocellulosic biomass is a key stage of designing processes of its microbiological conversion e.g. for the purposes of the production of cellulosic ethanol. The study was aimed at evaluating the effectiveness of microwave-assisted hydrotropic pretreatment using sodium cumene sulfonate (NaCS) for the delignification of pine and beech chips and wheat straw. Research results presenting the impact of process parameters of microwave-assisted hydrotropic delignification confirm a high effectiveness of this method of pretreatment of lignocellulosic biomass. The observed effects included changes in the composition of the biomass and an increased susceptibility of cellulose to the subsequent enzymatic hydrolysis. The use of microwave heating combined with an addition of hydrotrope of 40% w/v NaCS and 117 PSI for 60 min enabled a reduction of the absolute concentration of lignins by 36.58% in pine chips, by 57.68% in beech chips, and by 74.08% in wheat straw. After enzymatic hydrolysis was conducted, the highest concentration of glucose: 463.27 ± 11.25 mg glucose/g (hydrolysis yield 46.76 ± 1.14%) was obtained from the wheat straw, while 327.70 ± 22.15 mg glucose/g (hydrolysis yield 35.13 ± 2.37%) was acquired from the beech chips, and only 50.77 ± 0.75 mg glucose/g (hydrolysis yield 6.63 ± 0.10%) was obtained from the pine chips. Microwave-assisted hydrotropic delignification in the optimum process conditions additionally allows a complete removal of hemicellulose from biomass, which improves the effectiveness of enzymatic hydrolysis. Due to a significant reduction of lignin and hemicellulose concentration in biomass, cellulose—which is susceptible to enzymatic hydrolysis and a source of carbon in biosynthesis processes—becomes the main biomass component.
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19
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Kininge MM, Gogate PR. Intensification of alkaline delignification of sugarcane bagasse using ultrasound assisted approach. ULTRASONICS SONOCHEMISTRY 2022; 82:105870. [PMID: 34920353 PMCID: PMC8683778 DOI: 10.1016/j.ultsonch.2021.105870] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 05/24/2023]
Abstract
Ultrasound-assisted approach has been investigated for delignification so as to develop green and sustainable technology. Combination of NaOH with ultrasound has been applied with detailed study into effect of various parameters such as time (operating range of 15-90 min), alkali concentration (0.25 M-2.5 M), solvent loading (1:15-1:30 w/v), temperature (50-90 ˚C), power (40-140 W) and duty cycle (40-70 %) at fixed frequency of 20 kHz. The optimized operating conditions established for the ultrasonic horn were 1 M as the NaOH concentration, 1 h as treatment time, 70˚C as the operating temperature, 1:20 as the biomass loading ratio, 100 W as the ultrasonic power and 70% duty cycle yielding 67.30% as the delignification extent. Comparative study performed using conventional and ultrasonic bath assisted alkaline treatment revealed lower delignification as 48.09% and 61.55% respectively. The biomass samples were characterized by SEM, XRD, FTIR and BET techniques to establish the role of ultrasound during the treatment. The morphological changes based on the ultrasound treatment demonstrated by SEM were favorable for enhanced delignification and also the crystallinity index was more in the case of ultrasound treated material than that obtained by conventional method. Specific surface area and pore size determinations based on BET analysis also confirmed beneficial role of ultrasound. The overall results clearly demonstrated the intensification obtained due to the use of ultrasonic reactors.
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Affiliation(s)
- Madhuri M Kininge
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Parag R Gogate
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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20
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Sifuentes-Nieves I, Yáñez Macías R, Neira Velázquez G, Velázquez G, Garcia Hernandez Z, Gonzalez Morones P, Hernández-Hernández E. Biobased sustainable materials made from starch and plasma/ultrasound modified Agave fibers: Structural and water barrier performance. Int J Biol Macromol 2021; 193:2374-2381. [PMID: 34798189 DOI: 10.1016/j.ijbiomac.2021.11.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 11/19/2022]
Abstract
This study aims to investigate the effect of green modification methods (ultrasound and plasma treatment) on a by-product of the tequila industry (Agave fibers), which can be useful as raw material to elaborate biodegradable and hydrophobic starch films. FTIR analysis indicated a decrease of hydrophilic lignocellulosic components, since the cavitation and etching effect of ultrasound/plasma treatment reduced the large number of hydroxyl groups of the fibers. The inclusion of ultrasound/plasma modified fibers in the starch matrix limited the starch-glycerol interactions, reducing the free volume of the starch and the binding sites for water. Therefore, the solubility (%S), swelling (%W) and water vapor permeance (WVPe) of the films decreased from 27 to 16%, 57 to 50% and 0.37 to 0.21 g/day m2Pa, respectively. Furthermore, the water contact angle (WCA) and relative crystallinity values increased. The results indicated that the treatments are suitable green technologies to obtain hydrophobic fillers useful to develop sustainable materials.
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Affiliation(s)
- Israel Sifuentes-Nieves
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico.
| | - Roberto Yáñez Macías
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico
| | - Guadalupe Neira Velázquez
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico
| | - Gonzalo Velázquez
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Cerro Blanco No. 141, Col. Colinas del Cimatario, C.P. 76090 Santiago de Querétaro, Querétaro, Mexico
| | - Zureima Garcia Hernandez
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico
| | - Pablo Gonzalez Morones
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico
| | - Ernesto Hernández-Hernández
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, C.P. 25253 Saltillo, Coahuila, Mexico.
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21
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Chu X, Cheng Q, Xu Y, Luo L, Wang M, Zheng G, Zhang H, Yi W, Liu X, Sun Y, Sun Y. Anaerobic digestion of corn straw pretreated by ultrasonic combined with aerobic hydrolysis. BIORESOURCE TECHNOLOGY 2021; 341:125826. [PMID: 34523568 DOI: 10.1016/j.biortech.2021.125826] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Corn straw (CS) was pretreated by ultrasonic combined aerobic with biogas slurry as medium for anaerobic digestion (AD), that strengthened the degradation efficiency CS, varied in the composition of digestion slurry, thereby the methane production was increased. Central combinatorial design (CCD) test was used to treat CS at ultrasonic power (200, 400, and 600 W), time (10, 20, and 30 min) and AD for 25 days, at 37 ± 1℃. According to data showed that the pH and volatile fatty acids (VFAs) affected methane production directly. With an ultrasonic power 309 W, time 26 min, it reached the maximum content of VFAs with 16.24 g/L, the cumulative methane production achieved the highest with 198.56 mL/g VS, which was 46.73% higher than unpretreated raw material as CK. Ultrasonic-aerobic hydrolysis pretreatment can obtain higher VFAs and methane production content in a short period of time that is great significance to biogas engineering.
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Affiliation(s)
- Xiaodong Chu
- College of engineering Northeast Agriculture University, Harbin 15000, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China
| | - Qiushuang Cheng
- College of engineering Northeast Agriculture University, Harbin 15000, PR China
| | - Yonghua Xu
- College of electrical and information Northeast Agriculture University, Harbin 15000, PR China
| | - Lina Luo
- College of engineering Northeast Agriculture University, Harbin 15000, PR China
| | - Ming Wang
- College of engineering Northeast Agriculture University, Harbin 15000, PR China
| | - Guoxiang Zheng
- College of engineering Northeast Agriculture University, Harbin 15000, PR China
| | - Hongqiong Zhang
- College of engineering Northeast Agriculture University, Harbin 15000, PR China
| | - Weiming Yi
- College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255000, PR China
| | - Xiaofeng Liu
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yongming Sun
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China
| | - Yong Sun
- College of engineering Northeast Agriculture University, Harbin 15000, PR China.
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22
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23
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Preparation of Heat-Sensitivity Proteins from Walnut Meal by Sweep Frequency Ultrasound-Assisted Alkali Extraction. J FOOD QUALITY 2021. [DOI: 10.1155/2021/9478133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Sweep frequency ultrasound- (SFU-) assisted alkali extraction was conducted to increase the yield and content of heat-sensitive protein of walnut meal under a relatively mild condition. The physicochemical and structural characteristics of the proteins obtained by SFU-assisted alkali extraction and the conventional alkali extraction were compared. It was found that the optimal parameters for the SFU-assisted extraction were the solid-liquid ratio of 1 : 12, pH value of 9, initial temperature of 25°C, ultrasonic frequency of 28 kHz, sweep frequency amplitude of 1.5 kHz, sweep frequency cycle of 100 ms, duty ratio of 77%, and ultrasonic time of 90 min. Under this condition, a vast improvement in the walnut protein yield (34.9%) and the walnut protein content (9.8%) was observed. Such improvement was due to the structural changes of the sonicated protein; e.g., SFU decreased the intermolecular/intramolecular hydrogen bond force of proteins and, therefore, caused more order secondary structures and more loosen microstructures. This helped to improve the thermoplastic and solubility of the heat-sensitivity protein. Thus, SFU treatment could be an effective auxiliary technology in the alkali extraction of heat-sensitivity walnut protein. It might also be a promising technology for the extraction of heat-sensitivity protein from other agricultural by-products.
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24
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Göncü B, Gülşen H, Hoşgün EZ. Bioethanol production from pistachio ( pistacia vera L.) shells applying ozone pretreatment and subsequent enzymatic hydrolysis. ENVIRONMENTAL TECHNOLOGY 2021; 42:2438-2446. [PMID: 33719935 DOI: 10.1080/09593330.2021.1903565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/06/2021] [Indexed: 06/12/2023]
Abstract
Pistachio (pistacia vera L.) is a lignocellulosic raw material. One of the most pistachio produced three countries in the World is Turkey and Şanlıurfa is the city that most pistachio production in Turkey. As a result of this production, a large amount of pistachio waste is generated. Therefore, this study was conducted considering the abundant pistachio waste and furthermore, the effects of ozone and combined (ozone and hot water) pretreatments for bioethanol production from pistachio shells were investigated. Initially, the ozone and combined pretreatments were applied to the pistachio shells. It has been observed that applying the combined pretreatment provides better lignin removal than only ozone pretreatment and on the other hand, the ozone pretreatment provides better lignin removal than the hot water pretreatment. Scanning electron microscopy (SEM) images of pretreated and untreated pistachio shells were compared. Enzyme activity was measured, and 30-60 FPU enzyme loading was applied in an enzymatic hydrolysis. The enzymatic hydrolysis was applied to obtain fermentable sugar from the pistachio shells after pretreatments. As a result of enzymatic hydrolysis, 2.34-8.24 g/L reducing sugar was obtained. On the other hand, 1.21-2.33 g/L ethanol concentration was obtained end of the fermentation process. Fermentation efficiency was calculated between 42% and 55%. As a result, this study showed that combined pretreatment was more effective than the single pretreatment in the ethanol production process.
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Affiliation(s)
- Betül Göncü
- Department of Environmental Engineering, Harran University, Şanlıurfa, Turkey
| | - Hakki Gülşen
- Department of Environmental Engineering, Harran University, Şanlıurfa, Turkey
| | - Emir Zafer Hoşgün
- Department of Chemical Engineering, Eskişehir Technical University, Eskişehir, Turkey
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25
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Cellulose Recovery from Agri-Food Residues by Effective Cavitational Treatments. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11104693] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Residual biomass from agri-food production chain and forestry are available in huge amounts for further valorisation processes. Delignification is usually the crucial step in the production of biofuels by fermentation as well as in the conversion of cellulose into high added-value compounds. High-intensity ultrasound (US) and hydrodynamic cavitation (HC) have been widely exploited as effective pretreatment techniques for biomass conversion and in particular for cellulose recovery. Due to their peculiar mechanisms, cavitational treatments promote an effective lignocellulosic matrix dismantling with delignification at low temperature (35–50 °C). Cavitation also promotes cellulose decrystallization due to a partial depolymerization. The aim of this review is to highlight recent advances in US and HC-assisted delignification and further cellulose recovery and valorisation.
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26
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Lahiri S, Mandal D, Gogate PR, Ghosh A, Bhardwaj RL. Cavitation-assisted decontamination of yttria from graphite of different densities. ULTRASONICS SONOCHEMISTRY 2021; 73:105520. [PMID: 33773435 PMCID: PMC8027900 DOI: 10.1016/j.ultsonch.2021.105520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/01/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Yttria coated graphite crucibles are widely used to handle molten refractory and radioactive metals like uranium and plutonium. However, the coated layer suffers damages like cracking and peeling off owing to thermal cycles. As a result, removal of the yttria layer from the graphite surface is essential to ensure reuse of the crucible and minimization of radioactive waste. The present work investigates intensified dissolution of yttria from the coated graphite samples using ultrasound as a non-destructive decontamination technique to recycle the graphite substrate. The optimum conditions established for maximum dissolution were 8 M as acid strength, frequency of 30 kHz, temperature of 45 °C and power density of 8 W cm-2 that resulted in maximum dissolution of 52% in 30 min. Use of an oxidant H2O2 to the acid, did not yield any improvement in the dissolution kinetics, instead, increased oxidation of the graphite substrate was observed, leading to the anomalous weight gain of the graphite substrate despite surface erosion. Effect of ultrasound on the dissolution was pronounced, with almost a threefold increase compared to dissolution performed under silent conditions. Rates of dissolution of yttria from the substrate of different densities and pore size distribution were also studied. The dissolution was slowest from graphite of density 1.82 g cm-3 as the pore size distribution was conducive to accommodate the yttria particles. The dissolution in nitric acid followed ash layer diffusion controlled kinetics. The study has demonstrated the efficacy of application of ultrasound for accelerated decontamination of graphite substrates.
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Affiliation(s)
- S Lahiri
- Laser & Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Anushaktinagar, Trombay, Mumbai 400094, India.
| | - D Mandal
- Homi Bhabha National Institute, Anushaktinagar, Trombay, Mumbai 400094, India; Alkali Material & Metal Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - P R Gogate
- Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - A Ghosh
- Glass & Advanced Materials Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - R L Bhardwaj
- Laser & Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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27
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Rashvanlou RB, Farzadkia M, Rezaee A, Gholami M, Kermani M, Pasalari H. The influence of combined low-strength ultrasonics and micro-aerobic pretreatment process on methane generation and sludge digestion: Lipase enzyme, microbial activation, and energy yield. ULTRASONICS SONOCHEMISTRY 2021; 73:105531. [PMID: 33799109 PMCID: PMC8044681 DOI: 10.1016/j.ultsonch.2021.105531] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 03/09/2021] [Accepted: 03/14/2021] [Indexed: 06/04/2023]
Abstract
Low-frequency ultrasonics is a potential technology to reduce the hydrolysis phase period in anaerobic digestion process. In this study, theinfluence of combined low frequency ultrasonics and micro-aerobic (MA) pretreatment on sewage sludge solubilization, enzyme activity and anaerobic digestion were assessed. Initially, the effect of ultrasonic density (0.012, 0.014, 0.016, 0.018, 0.1, 0.12 and 0.14 W/mL) and irradiation time (1, 3, 5, 8, 9, 10 and 12 min) of 20 kHz frequency waves were investigated. Accordingly, the effect of micro-aerobic pretreatment (Air flow rate (AFR) = 0.1, 0.2, 0.3 and 0.5 VVM) within 20, 30, 40.48 and 60 h were examined. In addition, the effect of combined pretreatment on COD solubilization, lipase enzyme activation, ATP, percentage of live bacteria and methane gas production during the anaerobic process were examined. The results showed that the highest lipase activity (14.9 Umol/mL) was obtained under the effect of ultrasonic density of 0.1 W/ml within 9 min. The highest solubilization (65%) was observed under optimal micro-aerobic conditions: AFR = 0.2 (VVM) and micro-aerobic time: 40 h. Combined ultrasonic and micro-aerobic (US + MA) pretreatment increases the solubilization (70%), microbial activity (2080%) and lipase enzymatic activity (129%) compared to individual pretreatment. The Biogas production during anaerobic digestion pretreated with combined methods increased by 193% compared to the control, while the elevated values of biogas production in reactors pretreated by ultrasonic and micro-aerobic pretreatment alone were observed to be 101% and 165%, respectively. The net energy in reactor with the combined pre-treatment methods was calculated to be 1.26 kWh, while this value for control, pretreated ultrasonic and micro-aerobic reactors were obtained to be 0.56, 0.67 and 1.2 kWh, respectively.
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Affiliation(s)
- Reza Barati Rashvanlou
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| | - Abbas Rezaee
- Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mitra Gholami
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Kermani
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hasan Pasalari
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Xie H, Li S, Guo Z, Xu Z. Extraction of lead from electrolytic manganese anode mud by microwave coupled ultrasound technology. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124622. [PMID: 33333391 DOI: 10.1016/j.jhazmat.2020.124622] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/14/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
In this work, extraction of lead from Electrolytic Manganese Anode Mud (EMAM) by microwave coupled ultrasound was studied. The results showed that microwave roasting promoted the conversion of MnO2 to Mn2O3 and Mn3O4, which greatly facilitated the subsequent leaching process of lead and the introduction of ultrasound effectively enhanced the leaching process. The leaching rate for lead from EMAM was arrived to 86.98% under the optimum conditions with the ammonium acetate concentration of 2 mol/L at 343 K and the stirring speed of 300 rpm for 60 min. With the introduction of specific power ultrasound, the leaching of lead was increased by about 10%. The microwave roasting combined with ultrasonic enhanced leaching can effectively for the reuse and reduction of EMAM which provides ideas for further investigation of lead pollution control and resource utilization in EMAM.
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Affiliation(s)
- Huimin Xie
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Shiwei Li
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| | - Zhi Xu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
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Yan D, Ji Q, Yu X, Li M, Abiola Fakayode O, Yagoub AEA, Chen L, Zhou C. Multimode-ultrasound and microwave assisted natural ternary deep eutectic solvent sequential pretreatments for corn straw biomass deconstruction under mild conditions. ULTRASONICS SONOCHEMISTRY 2021; 72:105414. [PMID: 33316733 PMCID: PMC7803819 DOI: 10.1016/j.ultsonch.2020.105414] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 10/09/2020] [Accepted: 11/24/2020] [Indexed: 05/29/2023]
Abstract
Mild and effective pretreatments are essential to deconstruct lignocellulosic biomass so as to reuse cellulose content for value-added products. In this study, sequential multimode-ultrasound and microwave with natural ternary deep eutectic solvent (NATDES) pretreatments were used to deconstruct corn straw and optimized factors such as NATDES, ultrasonic, and microwave parameters. Results indicated that the ultrasound-NATDES or microwave-NATDES pretreatment could remove 37.86% and 52.36% lignin, respectively. When using sequential multimode-ultrasound and microwave assisted NATDES pretreatment, the delignification efficiency increased to 61.50%, and the cellulose content increased from 34.70% to 76.08%. In addition, the delignification of sequential multimode-ultrasound and microwave assisted NATDES pretreatment (under the mild conditions of microwave heating at 60 °C and 60 min) increased to 57.39%, and the cellulose content increased to 59.98%, too. This highlighted the effect of the combined ultrasound and microwave technology. Finally, the microstructural changes of mercury intrusion porosimeters, scanning electron microscopy, thermogravimetric, X-ray diffraction and Fourier transform mid-infrared spectroscopy were conducted to confirm the effectiveness of this method to deconstruct corn straw. A mechanism of the deconstruction of corn straw biomass in NATDES with the assistance of the sequential multimode-ultrasound and microwave heating was proposed. This research could open a window for future use of biomass energy by deconstructing lignocellulosic biomasses using environmentally friendly pretreatment methods.
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Affiliation(s)
- Dong Yan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qinghua Ji
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaojie Yu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mo Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | | | | | - Li Chen
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Haizhou, Lianyungang 222005, China
| | - Cunshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; School of Biological and Food Engineering, Chuzhou University, Chuzhou 239000, China.
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Flores EMM, Cravotto G, Bizzi CA, Santos D, Iop GD. Ultrasound-assisted biomass valorization to industrial interesting products: state-of-the-art, perspectives and challenges. ULTRASONICS SONOCHEMISTRY 2021; 72:105455. [PMID: 33444940 PMCID: PMC7808943 DOI: 10.1016/j.ultsonch.2020.105455] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/15/2020] [Accepted: 12/24/2020] [Indexed: 05/04/2023]
Abstract
Nowadays, the application of ultrasound (US) energy for assisting the lignocellulosic biomass and waste materials conversion into value-added products has dramatically increased. In this sense, this review covers theoretical aspects, promising applications, challenges and perspectives about US and its use for biomass treatment. The combination of US energy with a suitable reaction time, temperature and solvent contributes to the destruction of recalcitrant lignin structure, allowing the products to be used in thermochemical and biological process. The main mechanisms related to US propagation and impact on the fragmentation of lignocellulosic materials, selectivity, and yield of conversion treatments are discussed. Moreover, the synergistic effects between US and alternative green solvents with the perspective of industrial applications are investigated. The present survey analysed the last ten years of literature, studying challenges and perspectives of US application in biorefinery. We were aiming to highlight value-added products and some new areas of research.
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Affiliation(s)
- Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin, Italy
| | - Cezar A Bizzi
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Daniel Santos
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Gabrielle D Iop
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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Silambarasan S, Logeswari P, Sivaramakrishnan R, Pugazhendhi A, Kamaraj B, Ruiz A, Ramadoss G, Cornejo P. Polyhydroxybutyrate production from ultrasound-aided alkaline pretreated finger millet straw using Bacillus megaterium strain CAM12. BIORESOURCE TECHNOLOGY 2021; 325:124632. [PMID: 33485084 DOI: 10.1016/j.biortech.2020.124632] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
In this study, finger millet straw (FMS) was utilized for the production of Polyhydroxybutyrate (PHB) by Bacillus megaterium strain CAM12. Ultrasound-assisted alkaline (NaOH) pretreatment of FMS under optimized conditions followed by enzymatic saccharification resulted in the maximum delignification (72%), hydrolysis yield (84%), glucose yield (86%) and xylose yield (61%). The effects of different pH, temperature, incubation period, inoculum concentration, agitation speed and FMS enzymatic hydrolysates concentration were investigated to improve the PHB production. Under optimized conditions, strain CAM12 used the FMS hydrolysates as the sole carbon source for their growth and produced 8.31 g L-1 of PHB. The extracted polymer on Fourier transform infrared (FTIR), X-ray diffraction (XRD) and Nuclear magnetic resonance (NMR) analyses were confirmed to be PHB. These results suggest the potential of combined ultrasound and alkaline pretreated FMS hydrolysates as a promising feedstock for PHB production.
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Affiliation(s)
- Sivagnanam Silambarasan
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile
| | - Peter Logeswari
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile
| | - Ramachandran Sivaramakrishnan
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Balu Kamaraj
- Department of Neuroscience Technology, College of Applied Medical Science in Jubail, Imam Abdulrahman Bin Faisal University, Jubail, Saudi Arabia
| | - Antonieta Ruiz
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile; Scientific and Technological Bioresource Nucleus, BIOREN-UFRO, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile
| | - Govindarajan Ramadoss
- School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, India
| | - Pablo Cornejo
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile; Scientific and Technological Bioresource Nucleus, BIOREN-UFRO, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile.
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Optimization of Microwave-Assisted Alkali Pretreatment for Enhancement of Delignification Process of Cocoa Pod Husk. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.1.8872.31-43] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, the optimization of microwave-assisted alkaline (MAA) pretreatment is performed to attain the optimal operating parameters for the delignification of cocoa pod husk (CPH). The MAA performance was examined by heating the CPH solid with different particle sizes (60–120 mesh) and NaOH solution with a different sample to a solvent (SS) ratio (0.02–0.05 g/L), for short irradiation time (1–4 min). Box-Behnken Design (BBD) was utilized to optimize the percentage of lignocellulose composition changes. The results show that by enlarging particle size, the content of lignin and cellulose decreased while hemicellulose increased. By prolong irradiation time, the content of lignin and hemicellulose decreased while cellulose elevated. On the other hand, increasing the SS ratio was not significant for hemicellulose content changes. From FTIR and SEM characterization, the MAA drove the removal of lignin and hemicellulose of CPH and increased cellulose slightly. Supported by kinetic study which conducted in this work, it was exhibited that MAA pretreatment technology is an effective delignification method of CPH which can tackle the bottleneck of its commercial biofuel production. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Sheng Y, Lam SS, Wu Y, Ge S, Wu J, Cai L, Huang Z, Le QV, Sonne C, Xia C. Enzymatic conversion of pretreated lignocellulosic biomass: A review on influence of structural changes of lignin. BIORESOURCE TECHNOLOGY 2021; 324:124631. [PMID: 33454445 DOI: 10.1016/j.biortech.2020.124631] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 05/09/2023]
Abstract
The demands of energy sustainability drive efforts to bio-chemical conversion of biomass into biofuels through pretreatment, enzymatic hydrolysis, and microbial fermentation. Pretreatment leads to significant structural changes of the complex lignin polymer that affect yield and productivity of the enzymatic conversion of lignocellulosic biomass. Structural changes of lignin after pretreatment include functional groups, inter unit linkages and compositions. These changes influence non-productive adsorption of enzyme on lignin through hydrophobic interaction and electrostatic interaction as well as hydrogen bonding. This paper reviews the relationships between structural changes of lignin and enzymatic hydrolysis of pretreated lignocellulosic biomass. The formation of pseudo-lignin during dilute acid pretreatment is revealed, and their negative effect on enzymatic hydrolysis is discussed.
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Affiliation(s)
- Yequan Sheng
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Su Shiung Lam
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Yingji Wu
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Shengbo Ge
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Jinglei Wu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Liping Cai
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Department of Mechanical Engineering, University of North Texas, Denton, TX 76207, USA
| | - Zhenhua Huang
- Department of Mechanical Engineering, University of North Texas, Denton, TX 76207, USA
| | - Quyet Van Le
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam
| | - Christian Sonne
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Changlei Xia
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark.
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Calcio Gaudino E, Canova E, Liu P, Wu Z, Cravotto G. Degradation of Antibiotics in Wastewater: New Advances in Cavitational Treatments. Molecules 2021; 26:617. [PMID: 33504036 PMCID: PMC7865544 DOI: 10.3390/molecules26030617] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 02/01/2023] Open
Abstract
Over the past few decades, antibiotics have been considered emerging pollutants due to their persistence in aquatic ecosystems. Even at low concentrations, these pollutants contribute to the phenomenon of antibiotic resistance, while their degradation is still a longstanding challenge for wastewater treatment. In the present literature survey, we review the recent advances in synergistic techniques for antibiotic degradation in wastewater that combine either ultrasound (US) or hydrodynamic cavitation (HC) and oxidative, photo-catalytic, and enzymatic strategies. The degradation of sulfadiazine by HC/persulfate (PS)/H2O2/α-Fe2O3, US/PS/Fe0, and sono-photocatalysis with MgO@CNT nanocomposites processes; the degradation of tetracycline by US/H2O2/Fe3O4, US/O3/goethite, and HC/photocatalysis with TiO2 (P25) sono-photocatalysis with rGO/CdWO4 protocols; and the degradation of amoxicillin by US/Oxone®/Co2+ are discussed. In general, a higher efficiency of antibiotics removal and a faster structure degradation rate are reported under US or HC conditions as compared with the corresponding silent conditions. However, the removal of ciprofloxacin hydrochloride reached only 51% with US-assisted laccase-catalysis, though it was higher than those using US or enzymatic treatment alone. Moreover, a COD removal higher than 85% in several effluents of the pharmaceutical industry (500-7500 mg/L COD) was achieved by the US/O3/CuO process.
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Affiliation(s)
- Emanuela Calcio Gaudino
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (E.C.G.); (E.C.); (P.L.); (Z.W.)
| | - Erica Canova
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (E.C.G.); (E.C.); (P.L.); (Z.W.)
- Huvepharma Italia Srl, Via Roberto Lepetit, 142, 12075 Garessio (CN), Italy
| | - Pengyun Liu
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (E.C.G.); (E.C.); (P.L.); (Z.W.)
| | - Zhilin Wu
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (E.C.G.); (E.C.); (P.L.); (Z.W.)
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (E.C.G.); (E.C.); (P.L.); (Z.W.)
- Institute for Translational Medicine and Biotechnology, First Moscow State Medical University (Sechenov), 8 Trubetskaya ul, Moscow 119048, Russia
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Ultrasound-assisted alkali-urea pre-treatment of Miscanthus × giganteus for enhanced extraction of cellulose fiber. Carbohydr Polym 2020; 247:116758. [DOI: 10.1016/j.carbpol.2020.116758] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 01/24/2023]
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Integrated Ozonation-Enzymatic Hydrolysis Pretreatment of Sugarcane Bagasse: Enhancement of Sugars Released to Expended Ozone Ratio. Processes (Basel) 2020. [DOI: 10.3390/pr8101274] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The combined effects of three key ozonation process parameters on the integrated ozonation-enzymatic hydrolysis pretreatment of sugarcane bagasse (SCB) were investigated, with emphasis on the relationship between sugar release and ozone consumption. A lab-scale fixed bed reactor was employed for ozonation at varying ozone doses (50, 75 and 100 mg O3/g SCB), particle sizes (420, 710 and 1000 µm) and moisture contents (30, 45 and 60% w/w) in multifactorial experiments, keeping a residence time of 30 min. The ozonated SCB showed a reduction in the content of acid-insoluble lignin from 26.6 down to 19.1% w/w, while those of cellulose and hemicellulose were retained above 45.5 and 13.6% w/w, with recoveries of 100–89.9 and 83.5–72.7%, respectively. Ozone-assisted enzymatic hydrolysis allowed attaining glucose and xylose yields as high as 45.0 and 37.8%, respectively. The sugars released/ozone expended ratio ranged between 2.3 and 5.7 g sugars/g O3, being the higher value achieved with an applied ozone input of 50 mg O3/g SCB and SCB with 420 µm particle size and 60% moisture. Such operating conditions led to efficient ozone utilization (<2% unreacted ozone) with a yield of 0.29 g sugars/g SCB. Overall, the amount of sugars released relative to the ozone consumed was improved, entailing an estimated cost of ozonation of USD 34.7/ton of SCB, which could enhance the profitability of the process.
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Jafari M, Botte GG. Electrochemical treatment of sewage sludge and pathogen inactivation. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01481-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Co-Ensiling of Wheat Straw as an Alternative Pre-Treatment to Chemical, Hydrothermal and Mechanical Methods for Methane Production. ENERGIES 2020. [DOI: 10.3390/en13164047] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Wheat straw without pre-treatment is only converted to methane to a low degree during anaerobic digestion for fuel production due to its low hydrolysis. Current pre-treatment technologies are challenged by high expenses to energy or chemical agents. We examined the low-tech co-ensiling pre-treatment as an alternative pre-treatment of wheat straw, and compared the results with hydrothermal, chemical and mechanical pre-treatment methods. The effects of co-ensiling duration and the mixing ratio between straw and sugar beet root on the methane yields, surface morphology and chemical composition were examined. It was found that co-ensiling could improve production of methane by 34.7%, while a combined hydrothermal and chemical pre-treatment could increase the production of methane by 25.4%. The study demonstrated that the effect of co-ensiling could overlap with hydrothermal and chemical pre-treatment by having similar effects to increase lignocellulosic hydrolysis and improve methane production.
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Evaluation of Hydrothermal Pretreatment on Lignocellulose-Based Waste Furniture Boards for Enzymatic Hydrolysis. Appl Biochem Biotechnol 2020; 192:415-431. [PMID: 32394318 DOI: 10.1007/s12010-020-03315-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
Three typical waste furniture boards, including fiberboard, chipboard, and blockboard, were pretreated with conventional hydrothermal method. The responses of chemical composition, physicochemical morphology, and performances of enzymatic hydrolysis were evaluated. Results indicated the almost complete hemicellulose removal at higher pretreatment temperatures, the enhanced crystallinity index, and disordered morphology of the pretreated substrates indicated that the hydrothermal pretreatment deconstructed these boards well. However, the very low enzymatic hydrolysis (< 8% after 72 h) of the pretreated substrates showed the poor biological conversion. Three hypotheses for the weakened enzymatic hydrolysis were investigated, and results indicated that the residual adhesives and their degraded fractions were mainly responsible for poor hydrolysis. When NaOH post-pretreatment was attempted, cellulose-glucose conversion of the hydrothermally pretreated fiberboard, chipboard and blockboard can be improved to 28.5%, 24.1%, and 37.5%. Herein, the process of NaOH hydrothermal pretreatment was integrated, by which the hydrolysis of pretreated fiberboard, chipboard and blockboard was greatly promoted to 47.1%, 37.3%, and 53.8%, suggesting a possible way to pretreat these unconventional recalcitrant biomasses.
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Devadasu S, Joshi SM, Gogate PR, Sonawane SH, Suranani S. Intensification of delignification of Tectona grandis saw dust as sustainable biomass using acoustic cavitational devices. ULTRASONICS SONOCHEMISTRY 2020; 63:104914. [PMID: 31945571 DOI: 10.1016/j.ultsonch.2019.104914] [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: 03/18/2019] [Revised: 11/27/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Delignification of sawdust was studied using ultrasound assisted alkali peroxide approach using longitudinal horn for the first time and the efficacy compared with more commonly used configurations of ultrasonic reactors. Comparison with the conventional approach based on stirring has also been presented to establish the process intensification benefits. Effect of different operating parameters such as sodium carbonate concentration (0.1, 0.15, 0.2, 0.25 M), hydrogen peroxide concentration (0.2, 0.4, 0.6, 0.8, 1 M) and biomass loading (2, 4, 6, 8, 10 wt%), on the efficacy of lignin extraction has been investigated for different ultrasonic reactors. The optimum conditions for probe type ultrasonic horn were established as 150 W, 50% duty cycle and 80% amplitude with optimum process conditions as Na2CO3 concentration as 0.2 M, H2O2 concentration as 1 M, biomass loading of 10 wt% and operating time of 70 min. Longitudinal horn resulted in best efficacy (both in terms of yield and energy requirements) followed by ultrasonic horn and ultrasonic bath whereas the conventional approach was least effective. The obtained lignin was also analyzed using different characterization techniques. The presence of peaks at wavelength range of 875-817, 1123-1110, and at 1599 cm-1 for the extracted sample confirmed the presence of lignin. Increase in the crystallinity index of the processed sample (maximum for longitudinal horn) also confirmed the lignin removal as lignin is amorphous in nature. Overall it has been concluded that ultrasound can be effectively used for delignification with longitudinal horn as best configuration.
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Affiliation(s)
- Sushmitha Devadasu
- Chemical Engineering Department, National Institute of Technology, Warangal 506004, India
| | - Saurabh M Joshi
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400109, India
| | - Parag R Gogate
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400109, India
| | - Shirish H Sonawane
- Chemical Engineering Department, National Institute of Technology, Warangal 506004, India
| | - Srinath Suranani
- Chemical Engineering Department, National Institute of Technology, Warangal 506004, India.
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Korai RM, Wachemo AC, Yue L, Jaffar M, Li Z, Shahbaz M, Yuan H, Li X. Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw. RSC Adv 2020; 10:9290-9298. [PMID: 35497248 PMCID: PMC9050064 DOI: 10.1039/d0ra00525h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/18/2020] [Indexed: 12/02/2022] Open
Abstract
The digester performance was enhanced by ultrasonic application during pretreatment and the anaerobic digestion (AD) process. Two setups (with and without ultrasonic application) were applied during pretreatment and AD, to untreated and potassium hydroxide (KOH) pretreated wheat straw. The results confirmed that the ultrasonic application enhanced the hydrolysis process during pretreatment. The highest total volatile fatty acid (TVFA) (3012 ± 18 mg L−1) production and overall lignin, hemicellulose, and cellulose (LHC) reductions (22.4 ± 0.5%) were obtained from ultrasonic assisted KOH pretreated (KOHU) samples, after 36 hours of pretreatment. Similarly, the SEM analysis showed obvious disruption in the outer structure of KOHU samples. However, the ultrasonic application during AD showed significant improvement in biodegradation rate, biogas and biomethane production. Obvious reduction in sonication time (76%) along with enhanced biogas (570 ± 9 mL gm−1 VS) and biomethane (306 ± 12 mL gm−1 VS) production were observed from KOH pretreated digesters, when ultrasonication was applied during AD. Moreover, the biodegradation rate reached up to 76% along with highest total solid (TS) and volatile solid (VS) reductions from digesters with single KOH pretreatment and ultrasonic influence during AD. Finally, the digester effluent ranged in between the stable values, confirming the completion of the AD process. These results suggested that ultrasonic application was more effective when applied during AD due to the higher liquid to solid ratio. The reduction in energy input can be beneficial for commercial applications and to recognize the better stage for ultrasonic application for enhanced biomethane yield. The effect of ultrasonic application during KOH pretreatment and anaerobic digestion of wheat straw.![]()
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Affiliation(s)
- Rashid Mustafa Korai
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281.,Department of Petroleum & Gas Engineering, Dawood University of Engineering & Technology New MA Jinnah Road Karachi-74800 Pakistan
| | - Akiber Chufo Wachemo
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281.,Department of Water Supply and Environmental Engineering, Arba Minch University P. O Box 21 Arba Minch Ethiopia
| | - Liu Yue
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281
| | - Muhammad Jaffar
- Department of Civil Engineering, Mehran University of Engineering & Technology (SZAB Campus) Khairpur Mir's Pakistan
| | - Zhengwei Li
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281
| | - Muhammad Shahbaz
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281
| | - Hairong Yuan
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281
| | - Xiujin Li
- Department of Environmental Engineering, Beijing University of Chemical Technology No. 15 Beisanhuan East Road, Chaoyang District Beijing 10029 PR China +861064432281 +861064432281
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Elalami D, Carrere H, Abdelouahdi K, Garcia-Bernet D, Peydecastaing J, Vaca-Medina G, Oukarroum A, Zeroual Y, Barakat A. Mild microwaves, ultrasonic and alkaline pretreatments for improving methane production: Impact on biochemical and structural properties of olive pomace. BIORESOURCE TECHNOLOGY 2020; 299:122591. [PMID: 31918150 DOI: 10.1016/j.biortech.2019.122591] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
This study aims to investigate the effects of microwaves, ultrasonic and alkaline pretreatments on olive pomace properties and its biomethane potential. Alkaline pretreatment was found to reduce lipid and fiber contents (especially lignin) and to increase soluble matter. The alkali pretreatment at a dose of 8% (w/w TS) under 25 °C and for 1 day removed 96% of initial lipids from the solid olive pomace. Unlike NaOH addition, mild microwaves and ultrasonic pretreatments had no impact on lignin. However, in the case of long microwaves pretreatment (450 W-10 min), cellulose and lignin contents were reduced by 50% and 26% respectively. Similarly, the combination of ultrasonic and alkali reagent showed a positive effect on fiber degradation and lipid solubilization as well as a positive impact on methane production. Statistical analysis highlighted the correlation between NaOH dose, solubilization and methane production. The alkaline pretreatment at ambient temperature appeared the most energetically efficient.
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Affiliation(s)
- Doha Elalami
- Montpellier University, INRAE, LBE, 102 Avenue des Etangs, 11100 Narbonne, France; LCME, Sciences and Techniques Faculty, Cadi Ayyad University, Marrakech, Morocco; Mohammed VI Polytechnic University,43,150 Benguerir, Morocco
| | - Helene Carrere
- Montpellier University, INRAE, LBE, 102 Avenue des Etangs, 11100 Narbonne, France.
| | - Karima Abdelouahdi
- LCME, Sciences and Techniques Faculty, Cadi Ayyad University, Marrakech, Morocco
| | - Diana Garcia-Bernet
- Montpellier University, INRAE, LBE, 102 Avenue des Etangs, 11100 Narbonne, France
| | - Jerome Peydecastaing
- Laboratoire de Chimie Agro-industrielle, Université de Toulouse, INRA, Toulouse, France
| | - Guadalupe Vaca-Medina
- Centre d'Application et de Traitement des Agroressources, Université de Toulouse, INPT, Toulouse, France
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Joshi SM, Gogate PR. Intensification of dilute acid hydrolysis of spent tea powder using ultrasound for enhanced production of reducing sugars. ULTRASONICS SONOCHEMISTRY 2020; 61:104843. [PMID: 31683236 DOI: 10.1016/j.ultsonch.2019.104843] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/30/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Spent tea (ST) powder is one of the potential sustainable sources available abundantly and can be utilized to produce reducing sugars required for production of platform chemicals. The current study aims at intensifying the reducing sugars production based on ultrasound assisted dilute acid hydrolysis (UADAH). The effects of reaction time, solid liquid ratio, acid concentration and temperature on the yield of reducing sugars were investigated initially for UADAH process based on ultrasonic (US) horn. The highest yield of 24.75 g/L for the reducing sugars was obtained at solid liquid ratio of 1:8, acid concentration of 1% w/v and temperature of 60 °C within 120 min. Use of oxidants like hydrogen peroxide (H2O2) and Fenton's reagent to further intensify the production has also been studied. Use of H2O2 at optimum loading of 0.75 g/L resulted in reducing sugars yield of 26.2 g/L within 75 min while using same H2O2 loading with FeSO4 at loading of 0.75 g/L along with UADAH reduced the reaction time to 60 min for almost similar yield. Large scale studies performed using US flow cell revealed that yield of reducing sugars as 22.4 g/L is obtained in 120 min in the case of only UADAH, while in the case of UADAH along with H2O2 and Fenton's reagent, similar yield of reducing sugars was obtained in only 90 and 60 min respectively. UADAH in combination with oxidants has been demonstrated as an effective and intensified approach to produce reducing sugars from spent tea powder available as sustainable source.
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Affiliation(s)
- Saurabh M Joshi
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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44
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Wahid R, Romero-Guiza M, Moset V, Møller HB, Fernández B. Improved anaerobic biodegradability of wheat straw, solid cattle manure and solid slaughterhouse by alkali, ultrasonic and alkali-ultrasonic pre-treatment. ENVIRONMENTAL TECHNOLOGY 2020; 41:997-1006. [PMID: 30149787 DOI: 10.1080/09593330.2018.1516802] [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: 04/03/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
Wheat straw and animal wastes are important feedstock for biogas production in Europe. Yet, the high content of lignocellulosic and refractory materials causes the process to be relatively slow. Therefore, pretreatment methods have been proposed to shorten the hydrolysis phase. The present study examined the effectiveness of alkali pre-treatment (AP), ultrasonic pre-treatment (UP), and alkali-ultrasonic pre-treatment (AUP) applied on wheat straw (WS), solid fraction of cattle manure (SCM) and solid fraction of slaughterhouse waste (SSHW), by monitoring solubilisation ratio, anaerobic biodegradability and methane yield. The results indicate that the solubilisation ratio of the substrates improved regardless of the types of pre-treatment applied. Though, AP was more effective on WS and SSHW than other pre-treatments (UP and AUP), with approximately 47% and 17% extra methane, respectively. Moreover, AP of SCM caused an increased in methane production rate by 100% and minimised lag phase from 16 days to 1 day during anaerobic digestion. Based on Danish conditions, only AP of WS was economical prior to the biogas process due to high extra methane yield. A positive energy budget of 8 € t-1 VS was calculated. High-energy consumption during UP and AUP in laboratory scale hindered the positive benefits of these pre-treatments.
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Affiliation(s)
- Radziah Wahid
- Department of Engineering, Aarhus University, Tjele, Denmark
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Maycoll Romero-Guiza
- IRTA, Institute of Agrifood Research and Technology, Barcelona, Spain
- Innovation and Technology Department, FCC Aqualia, Madrid, Spain
| | - Verónica Moset
- Department of Engineering, Aarhus University, Tjele, Denmark
| | | | - Belén Fernández
- IRTA, Institute of Agrifood Research and Technology, Barcelona, Spain
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45
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46
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Ultrasound-Ionic Liquid Pretreatment Enhanced Conversion of the Sugary Food Waste to 5-Hydroxymethylfurfural in Ionic Liquid/Solid Acid Catalyst System. Catal Letters 2019. [DOI: 10.1007/s10562-019-03059-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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47
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Joshi SM, Gogate PR. Intensifying the biogas production from food waste using ultrasound: Understanding into effect of operating parameters. ULTRASONICS SONOCHEMISTRY 2019; 59:104755. [PMID: 31479890 DOI: 10.1016/j.ultsonch.2019.104755] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/25/2019] [Accepted: 08/25/2019] [Indexed: 05/05/2023]
Abstract
The present work depicts the novel approach of using ultrasound (US) induced cavitation for feedstock pretreatment with an objective of improving the anaerobic digestion (AD) process for biogas production. Initially the critical analysis of literature based on US for improving the biogas production has been presented briefly followed by study on use of US in pretreatment of food waste (FW) as well as during AD to quantify the intensification in the biogas production. Effect of different operating parameters for pretreatment such as irradiation time (over the range 2-14 min), power density (0.2-1 W/mL), duty cycle (20-80%) and substrate loading (3-11%w/v) has been investigated. Highest increase in soluble chemical oxygen demand (sCOD) with final value as 18500 mg/L (±20) (increase of 61.5%) was obtained at optimum treatment conditions of 10 min as irradiation time, 0.4 W/mL as power density, 60% as duty cycle and 7% w/v as the substrate loading. Pretreated FW was further subjected to low intensity US assisted AD process. Parameters optimized for biogas production were power (over the range of 100-200 W), irradiation time (5-15 min) and duty cycle (10-60%). Increased biogas production (almost two times) with 80% sCOD removal after 15 days was obtained at best conditions of 200 W as the US power (0.04 W/mL as power density), 5 min as the US irradiation time and 10% of US duty cycle while AD process without US resulted in only 48% sCOD removal within same time period. The work demonstrated the effective application of US in the pretreatment of feedstock and subsequent AD process giving much higher yield of biogas in shorter time.
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Affiliation(s)
- Saurabh M Joshi
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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48
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Zaini NABM, Chatzifragkou A, Charalampopoulos D. Alkaline fractionation and enzymatic saccharification of wheat dried distillers grains with solubles (DDGS). FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Patil RS, Joshi SM, Gogate PR. Intensification of delignification of sawdust and subsequent enzymatic hydrolysis using ultrasound. ULTRASONICS SONOCHEMISTRY 2019; 58:104656. [PMID: 31450369 DOI: 10.1016/j.ultsonch.2019.104656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/28/2019] [Accepted: 06/21/2019] [Indexed: 06/10/2023]
Abstract
The current work investigates intensification of delignification of sawdust and subsequent enzymatic hydrolysis to produce reducing sugars with the use of ultrasound. Alkaline hydrolysis of sawdust was initially performed to remove lignin which hampers the rate of enzymatic hydrolysis. Effect of different parameters in the case of ultrasound (US) assisted and conventional processes such as alkali concentration (0.5-2.5 N), substrate loading (0.2-1.0% w/v) and temperature (40-80 °C) have been investigated. Optimized parameters obtained for US assisted process showed better trends as compared to conventional process with about 1.25 times higher yields and significant reduction in time by about 4 h. The process parameters for US assisted and conventional enzymatic hydrolysis to produce reducing sugars were also optimized by varying substrate loading (0.5-10% w/v), reaction temperature (30-70 °C) along with variation in US power (10-80 W) and US duty cycle (30-90%). US assisted enzymatic hydrolysis performed at 4% w/v substrate loading along with 50 W US power and 50% duty cycle at 50 °C resulted in 7.46 mg/mL of reducing sugars yield within 1 h while conventional stirring with 6% w/v substrate loading and 50 °C resulted in approximately same yield of reducing sugars within 3 h. The requirement of lower time for similar yields or in other words higher yield in same time clearly highlights the process intensification benefits due to the use of ultrasound. Overall it can be concluded from the study that US assisted processes resulted in efficient delignification along with higher yield of reducing sugars in lower treatment time as compared to conventional process.
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Affiliation(s)
- Rucha S Patil
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Saurabh M Joshi
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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50
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Ong VZ, Wu TY, Lee CBTL, Cheong NWR, Shak KPY. Sequential ultrasonication and deep eutectic solvent pretreatment to remove lignin and recover xylose from oil palm fronds. ULTRASONICS SONOCHEMISTRY 2019; 58:104598. [PMID: 31450331 DOI: 10.1016/j.ultsonch.2019.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/03/2019] [Accepted: 05/14/2019] [Indexed: 06/10/2023]
Abstract
This study demonstrated the effect of two-pot sequential pretreatment, comprising of ultrasound assisted deep eutectic solvent (DES) with the aim to investigate the effects of ultrasound amplitude and duration in enhancing delignification. Oil palm fronds (OPF) were ultrasonicated in a water medium, followed by a pretreatment using DES (choline chloride:urea). Fourier transform infra-red spectroscopy, X-ray diffraction, field emission scanning electron microscope, Brunauer-Emmet-Teller and solubilised lignin concentration were conducted to confirm the effectiveness of ultrasound assisted DES on the pretreatment of OPF. The recommended ultrasound conditions were determined to be 70% amplitude and duration of 30 min, where the sequential DES pretreatment was able to reduce lignin content of OPF to 14.01%, while improving xylose recovery by 58%.
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Affiliation(s)
- Victor Zhenquan Ong
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Ta Yeong Wu
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia; Monash-Industry Palm Oil Education and Research Platform (MIPO), School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
| | - Cornelius Basil Tien Loong Lee
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Nicholas Wei Ren Cheong
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Katrina Pui Yee Shak
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, 43000 Kajang, Selangor Darul Ehsan, Malaysia
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