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Singh P, Dogra P, Kalamdhad AS. Effects of pelletization on biomethane production from wheat straw. ENVIRONMENTAL TECHNOLOGY 2024:1-12. [PMID: 38801058 DOI: 10.1080/09593330.2024.2359095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 05/16/2024] [Indexed: 05/29/2024]
Abstract
The high lignin content and low bulk density of wheat straw pose challenges for biogas production. To overcome these hurdles, pretreatment and biomass pelletization have emerged as viable options. Thus, this research aims to reduce the recalcitrant nature of WS by employing various thermal pretreatment techniques and identifying the optimum parameters (temperature and time). To prepare pellets, a mixture comprising wheat straw (subjected to the best pretreatment) and cow manure pellets (WCP) at varying substrate and binder (Svs/Bvs) ratios ranging from 0.5 to 2.5 were used. Parameters such as density, water absorption, and drop shattering were evaluated to evaluate the physical characteristics of produced WCP. Additionally, the biomethane yield test of WCP (exhibiting the most favourable physical characteristics) was performed with various total solids (TS) concentrations from 4 to 12%. The WS demonstrated the highest sCOD solubilisation of 9066 mg/L when subjected to a hot air oven pretreatment (90 min at 110°C). The physical qualities of WCP were found to be dependent on the Svs/Bvs ratio (with the optimal ratio being 2.0). It was also observed that a TS content of 6% yielded the highest biomethane production (253.85 mL/g-VSconsumed). In summary, this study's conclusion waves the path of management of wheat straw and cow dung while simultaneously generating bioenergy.
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Affiliation(s)
- Prakash Singh
- School of Agro and Rural Technology, Indian Institute of Technology Guwahati, Guwahati, India
| | - Pallavi Dogra
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, India
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2
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Singh P, Dogra P, Tg I, Kalamdhad AS. Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production. Sci Rep 2024; 14:5904. [PMID: 38467656 PMCID: PMC10928109 DOI: 10.1038/s41598-024-52122-3] [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: 10/20/2023] [Accepted: 01/14/2024] [Indexed: 03/13/2024] Open
Abstract
Agricultural residues such as rice straw (RS) are desirable raw materials for biogas generation. However, the recalcitrant nature of RS hinders biogas production, and its low bulk density increases storage space requirements, transportation needs, and overall costs. These challenges could be resolved by pretreatment and pelletization. In this study, various thermal pretreatments were performed, and the best conditions (temperature and time) were identified. Also, rice straw and cow dung pellets (RCP) at different food-to-microorganism (F/M) ratios (0.5-2.5) were prepared. Parameters such as bulk density, moisture absorption, and drop shatter tests were conducted to evaluate the physical properties. Finally, the biochemical methane potential (BMP) study of the best RCP with varying total solids (TS: 4-12%) content was investigated. The results indicate that hot air oven pretreatment (for 60 min at 120 °C) resulted in maximum solubilization. In physical characteristics, RCP with an F/M ratio of 2.5 pellets was ideal. The bulk density of RCP 2.5 was found to be around 25 times that of the raw. Also, the TS 8% yielded maximum biomethane (279 mL/g-VSconsumed) as compared to other TS contents. Overall, this study will propel the growth of bioenergy while simultaneously tackling the pressing issues related to RS management.
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Affiliation(s)
- Prakash Singh
- School of Agro and Rural Technology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Pallavi Dogra
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Induchoodan Tg
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
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Lu G, Li X, Li W, Liu Y, Wang N, Pan Z, Zhang G, Zhang Y, Lai B. Thermo-activated periodate oxidation process for tetracycline degradation: Kinetics and byproducts transformation pathways. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132696. [PMID: 37801979 DOI: 10.1016/j.jhazmat.2023.132696] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 09/27/2023] [Accepted: 10/01/2023] [Indexed: 10/08/2023]
Abstract
Periodate-based advanced oxidation processes have been diffusely practiced for pollutant decontamination. However, the thermo-activation of periodate process (heat/PI), an effective water pollution removal process, has been rarely discussed, and the degradation pathway of this heat/PI system requires investigation. In this work, tetracycline antibiotics were selected as the model micropollutant for the comprehensive evaluation of the heat/PI system. The heat/PI system exhibited good performance for tetracycline (TC) remediation with temperature increases. The principal reactive oxidative species in the heat/PI system was confirmed using quenching experiments and electron paramagnetic resonance experiments. Further, the potential reactive sites in the TC were identified based on the density functional theory calculation. Based on the detection results of intermediates, there was no significant difference in byproducts generated during TC degradation under various temperatures in the heat/PI system. The Toxicity Estimation Software Tool (T.E.S.T.) method was applied to calculate the individual toxicity of the byproducts. This study contributes to a comprehensive explanation of the process of the thermal activation of periodate, and in particular, it explains the source of oxidation power, the transformation of byproducts, and the toxicity of reaction systems.
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Affiliation(s)
- Gonggong Lu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiang Li
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Wei Li
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Yang Liu
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
| | - Ningruo Wang
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhicheng Pan
- Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group Co.,Ltd, Chengdu 610041, China.
| | - Guisheng Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yongli Zhang
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Bo Lai
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
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Show BK, Shivakumaran G, Koley A, Ghosh A, Chaudhury S, Hazra AK, Balachandran S. Effect of thermal and NaOH pretreatment on water hyacinth to enhance the biogas production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:120984-120993. [PMID: 37947930 DOI: 10.1007/s11356-023-30810-3] [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: 03/24/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Water hyacinth (WH) is used as the substrate for biogas production due to its high lignocellulosic composition and natural abundance. The present study used thermal and chemical (alkali) pretreatment techniques to enhance biogas production from water hyacinth used as a substrate by anaerobic digestion. Thermal pretreatment was done using an autoclave at 121 °C and 15 lb (2 bar) pressure and alkali pretreatment by NaOH at two concentrations (2% and 5% w/v). The inoculum:substrate ratio for biogas production was 2:1, where cow dung was used as inoculum. Results indicated that the pretreatments increased biomass degradability and improved biogas production. Water hyacinth pretreated with 5% NaOH produced the highest amount of biogas (142.61 L/Kg VS) with a maximum methane content of 64.59%. The present study found that alkali pretreatment can modify the chemical structure and enhance WH hydrolysis, leading to enhanced energy production.
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Affiliation(s)
- Binoy Kumar Show
- Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India
| | - Gaayathri Shivakumaran
- Department of Microbiology, PSG College of Arts and Sciences, Coimbatore, Tamil Nadu 641 014, India
| | - Apurba Koley
- Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India
| | - Anudeb Ghosh
- Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India
| | - Shibani Chaudhury
- Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India.
| | - Amit Kumar Hazra
- Department of Lifelong Learning and Extension, Palli-Samgathana Vibhaga, Visva-Bharati (A Central University), Sriniketan, West Bengal, 731236, India
| | - S Balachandran
- Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India
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Kumar N, Gupta SK, Yadav B. Optimisation of process parameters of a thermal digester for the rapid conversion of food waste into value-added soil conditioner. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2023; 41:1632-1648. [PMID: 37073807 DOI: 10.1177/0734242x231167078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A novel thermal digester for converting food waste (FW) into nutrient-rich soil conditioner was designed and explored. The process variables, that is, temperature, the volume of the digestion chamber and the rotational speed of the digester were optimised using response surface methodology (RSM). The study revealed that the digester temperature of 150°C and rotational speed of 40 RPM required minimum time (180 minutes) for attaining the equilibrium moisture with a minimum energy consumption of 0.218 kWh kg-1. The process resulted in 80 ± 2.5% reduction in total volume of the FW. Detailed characterisation revealed that the end product was comparable to the organic fertiliser as per the Fertiliser Association of India norms. The digestion helps in breakdown of cellulose content of FW into hemicellulose which supports formation of primary and secondary walls, seed storage carbohydrates, and facilitates plant growth. 1H-Nuclear magnetic resonance (1H-NMR) spectra of the end product revealed mineralisation of organics during digestion. Decrease in ultraviolet (UV) absorbance value at 280 nm also revealed the humification of the end product. X-ray diffraction (XRD) analysis disclosed extremely low crystallinity and non-recalcitrant nature of the end product. A low humification index value (HI-3.43), high fertilising index (FI-4.8), and clean index (CI-5.0) revealed that the end product could safely be utilised as an organic fertiliser. The cost-benefit analysis revealed that thermal digestion technique is profitable and economically viable with benefit-cost ratio (BCR) of 1.35. The study offers a unique approach for the rapid and hassle-free production of value-added soil conditioner from FW.
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Affiliation(s)
- Nitin Kumar
- Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
| | - Sunil Kumar Gupta
- Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
| | - Brahmdeo Yadav
- Birsa Institute of Technology, Sindri, Dhanbad, Jharkhand, India
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Xu J, Li X, Gao T. The Multifaceted Function of Water Hyacinth in Maintaining Environmental Sustainability and the Underlying Mechanisms: A Mini Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16725. [PMID: 36554606 PMCID: PMC9779344 DOI: 10.3390/ijerph192416725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/03/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Water hyacinth (Eichhornia crassipes) (WH) is a widespread aquatic plant. As a top invasive macrophyte, WH causes enormous economic and ecological losses. To control it, various physical, chemical and biological methods have been developed. However, multiple drawbacks of these methods limited their application. While being a noxious macrophyte, WH has great potential in many areas, such as phytoremediation, manufacture of value-added products, and so on. Resource utilization of WH has enormous benefits and therefore, is a sustainable strategy for its control. In accordance with the increasing urgency of maintaining environmental sustainability, this review concisely introduced up to date WH utilization specifically in pollution remediation and curbing the global warming crisis and discussed the underlying mechanisms.
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Affiliation(s)
- Jing Xu
- Correspondence: (J.X.); (T.G.)
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7
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Pas C, Brodeur D, Deschamps MH, Lebeuf Y, Adjalle K, Barnabé S, Eeckhout M, Vandenberg G, Vaneeckhaute C. Valorization of pretreated biogas digestate with black soldier fly (Hermetia illucens, L; Diptera: Stratiomyidae) larvae. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115529. [PMID: 35816966 DOI: 10.1016/j.jenvman.2022.115529] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Increasing concerns related to the negative environmental impacts of food waste havemotivated the development of new solutions to complete the waste cycle of organic residues. One particular "waste" product, the solid digestate from anaerobic digestion, has been identified for further bioprocessing. Black soldier fly (BSF, Hermetia illucens) larvae are known for their great potential in the processing of organic waste. In this study, this potential was investigated to further process the digestate waste stream. Digestate is considered a low potential source of nutrients for larvae due to the presence of different fiber fractions. However, the lignocellulosic matter in this residue could be enzymatically hydrolyzed to release residual carbohydrates. For this study, digestate from a full-scale anaerobic digestion plant in Quebec (Canada) which processes a range of feedstocks (fruits, vegetables, garden wastes, sludge derived from dairy processing and wastewater treatment) was sourced. Digestate was treated with Accelerase® DUET enzyme complex to hydrolyze lignocellulosic matter and compared to a standard diet. For each treatment, 600 four-day old larvae were fed daily with 160 g (70% relative humidity) of diets for 6 days and harvested 3 days later. Although their growth and total biomass were significantly lower than the standard diet, larvae fed on hydrolyzed digestate were almost two times larger than the larvae fed on crude digestate. Furthermore, the content of organic matter, lipids and minerals in the diets and frass were analyzed. Finally, the feasibility of applying BSF treatment for digestate valorization is discussed. According to this study, enzyme-treated digestate does not allow efficient larval growth compared to the standard diet. The development of a more effective method of pretreatment is required for BSF larvae to become an eco-friendly solution for digestate valorization.
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Affiliation(s)
- C Pas
- BioEngine Research Team on Green Process Engineering and Biorefineries, Chemical Engineering Department, Université Laval, 1065 avenue de la Médecine, Québec, G1V 0A6, Canada; Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec, G1V 0A6, Canada; Ghent University, Valentin Vaerwyckweg 1, Schoonmeersen, Ghent, 9000, Belgium.
| | - D Brodeur
- Institut national de la recherche scientifique, 490 rue de la Couronne, Québec, G1K 9A9, Canada
| | - M-H Deschamps
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec, G1V 0A6, Canada
| | - Y Lebeuf
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec, G1V 0A6, Canada
| | - K Adjalle
- Institut national de la recherche scientifique, 490 rue de la Couronne, Québec, G1K 9A9, Canada
| | - S Barnabé
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, Canada
| | - M Eeckhout
- Ghent University, Valentin Vaerwyckweg 1, Schoonmeersen, Ghent, 9000, Belgium
| | - G Vandenberg
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec, G1V 0A6, Canada
| | - C Vaneeckhaute
- BioEngine Research Team on Green Process Engineering and Biorefineries, Chemical Engineering Department, Université Laval, 1065 avenue de la Médecine, Québec, G1V 0A6, Canada.
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Ezzariai A, Hafidi M, Ben Bakrim W, Kibret M, Karouach F, Sobeh M, Kouisni L. Identifying Advanced Biotechnologies to Generate Biofertilizers and Biofuels From the World's Worst Aquatic Weed. Front Bioeng Biotechnol 2022; 9:769366. [PMID: 35004639 PMCID: PMC8727915 DOI: 10.3389/fbioe.2021.769366] [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: 09/01/2021] [Accepted: 11/25/2021] [Indexed: 11/13/2022] Open
Abstract
Water hyacinth (Eichhornia crassipes L.) was introduced as an invasive plant in freshwater bodies more particularly in Asia and Africa. This invasive plant grows rapidly and then occupies a huge layer of freshwater bodies. Hence, challenges are facing many countries for implementing suitable approaches for the valorization of the world's worst aquatic weed, and water hyacinth (WH). A critical and up-to-date review article has been conducted for more than 1 year, based on more than 100 scientific journal articles, case studies, and other scientific reports. Worldwide distribution of WH and the associated social, economic, and environmental impacts were described. In addition, an extensive evaluation of the most widely used and innovative valorization biotechnologies, leading to the production of biofertilizer and bioenergy from WH, and was dressed. Furthermore, an integrated search was used in order to examine the related advantages and drawbacks of each bioprocess, and future perspectives stated. Aerobic and anaerobic processes have their specific basic parameters, ensuring their standard performances. Composting was mostly used even at a large scale, for producing biofertilizers from WH. Nevertheless, this review explored some critical points to better optimize the conditions (presence of pollutants, inoculation, and duration) of composting. WH has a high potential for biofuel production, especially by implementing several pretreatment approaches. This review highlighted the combined pretreatment (physical-chemical-biological) as a promising approach to increase biofuel production. WH valorization must be in large quantities to tackle its fast proliferation and to ensure the generation of bio-based products with significant revenue. So, a road map for future researches and applications based on an advanced statistical study was conducted. Several recommendations were explored in terms of the choice of co-substrates, initial basic parameters, and pretreatment conditions and all crucial conditions for the production of biofuels from WH. These recommendations will be of a great interest to generate biofertilizers and bioenergy from WH, especially within the framework of a circular economy.
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Affiliation(s)
- Amine Ezzariai
- African Sustainable Agriculture Research Institute, Mohammed VI Polytechnic University, Laayoune, Morocco
| | - Mohamed Hafidi
- Laboratoire Biotechnologies Microbiennes, Agrosciences et Environnement (BioMagE), Unité de Recherche Labellisée, Faculty of Science Semlalia, Cadi Ayyad University, Marrakech, Morocco.,Agrobiosciences Department, Mohammed VI Polytechnic University, Benguérir, Morocco
| | - Widad Ben Bakrim
- African Sustainable Agriculture Research Institute, Mohammed VI Polytechnic University, Laayoune, Morocco.,Agrobiosciences Department, Mohammed VI Polytechnic University, Benguérir, Morocco
| | - Mulugeta Kibret
- African Sustainable Agriculture Research Institute, Mohammed VI Polytechnic University, Laayoune, Morocco.,Department of Biology, Bahir Dar University, Bahir Dar, Ethiopia
| | - Fadoua Karouach
- African Sustainable Agriculture Research Institute, Mohammed VI Polytechnic University, Laayoune, Morocco
| | - Mansour Sobeh
- Agrobiosciences Department, Mohammed VI Polytechnic University, Benguérir, Morocco
| | - Lamfeddal Kouisni
- African Sustainable Agriculture Research Institute, Mohammed VI Polytechnic University, Laayoune, Morocco
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Liu L, Sim SF, Lin S, Wan J, Zhang W, Li Q, Peng C. Integrated structural and chemical analyses for HCl-supported hydrochar and their adsorption mechanisms for aqueous sulfachloropyridazine removal. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126009. [PMID: 34229376 DOI: 10.1016/j.jhazmat.2021.126009] [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: 02/06/2021] [Revised: 04/09/2021] [Accepted: 04/24/2021] [Indexed: 06/13/2023]
Abstract
In this study, various HCl-supported hydrochar made from root powder of long-root Eichhornia crassipes were applied to adsorb aqueous sulfachloropyridazine (SCP). Adsorption capacity (qe μg g-1) was positively correlated with combined severity-CS. With CS increasing, carbonization degree, hydrophobicity, porosity and isoelectric point of hydrochar increased, but content of polar functional groups decreased. Hydrophobic interaction was important for SCP adsorption. A 24 × 36 peak area table was generated from 24 FT-IR absorbance spectra computed by peak detection algorithm. Afterwards, correlation analysis between qe μg g-1 and FT-IR peak area were conducted, indicating that wavenumbers at 555.4, 1227.47, 1374.51, 1604.5, 2901.4/2919.2 and 3514.63 cm-1 were helpful for SCP adsorption. Further, multivariate linear regression analyses showed that aromatic skeleton and phenolic hydroxyl were the two biggest contributors. Electrostatic attraction did not exist during the SCP adsorption process. Under strong acid condition, protonated amino groups in cationic SCP acting as a hydrogen donator interacted with electron-rich functional groups onto hydrochar by Hydrogen interaction. Under weak acid condition, neutral SCP served as an π electron donor to bond with hydrochar by π-π electron donator-acceptor interaction. This work could guide the functional groups modification strategy of hydrochar to make better use of it in water purification field.
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Affiliation(s)
- Lin Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Siong Fong Sim
- University Malaysia Sarawak, Faculty of Resource Science and Technology, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Sen Lin
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiang Wan
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Qiannan Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Peng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
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Jomnonkhaow U, Sittijunda S, Reungsang A. Influences of size reduction, hydration, and thermal-assisted hydration pretreatment to increase the biogas production from Napier grass and Napier silage. BIORESOURCE TECHNOLOGY 2021; 331:125034. [PMID: 33798860 DOI: 10.1016/j.biortech.2021.125034] [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: 01/24/2021] [Revised: 03/13/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Pretreatment of lignocellulose materials prior to biogas production is required to minimize biomass recalcitrance and increase biomass digestibility. In this study, the effects of particle size reduction, hydration, and thermal-assisted hydration on Napier grass and silage for methane production were evaluated. Compared to the 4.75-mm particle size Napier grass and silage, 0.425-mm Napier grass and silage showed 72% and 46% increases in methane yield, respectively, whereas hydration pretreatment using hydrogenic effluent increased the methane yields from Napier grass and silage by 23% and 56%, respectively. Superior effects were observed when Napier grass and silage were pretreated with thermal-assisted hydration using hydrogenic effluent for 60 and 15 min, respectively, resulting in methane yields of 385 and 331 mL CH4/g substrateadded. The results indicate that size reduction accompanied by thermal-assisted hydration using hydrogenic effluent as a hydration medium significantly improved the biodegradability of Napier grass and silage.
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Affiliation(s)
- Umarin Jomnonkhaow
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sureewan Sittijunda
- Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Alissara Reungsang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand; Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand; Academy of Science, Royal Society of Thailand, Bangkok 10300, Thailand.
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11
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Biomass and Lipid Productivity by Two Algal Strains of Chlorella sorokiniana Grown in Hydrolysate of Water Hyacinth. ENERGIES 2021. [DOI: 10.3390/en14051411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hydrolysate prepared from the chemical hydrolysis of water hyacinth biomass contains a high amount of solubilised carbohydrate and nutrients. This hydrolysate was utilised as a medium for the cultivation of two strains of Chlorella sorokiniana, isolated from a municipal wastewater treatment plant using two different media, i.e., BG-11 and Knop’s medium. Different light intensities, light–dark cycles, and various concentrations of external carbon sources (monosaccharides and inorganic carbon) were used to optimise the microalgal growth. For the accumulation of lipids and carbohydrates, the microalgal strains were transferred to nutrient amended medium (N-amended and P-amended). It was observed that the combined effect of glucose, inorganic carbon, and a 12:12 h light–dark cycle proved to be the optimum parameters for high biomass productivity (~200 mg/L/day). For Chlorella sorokiniana 1 (isolated from BG-11 medium), the maximum carbohydrate content (22%) was found in P-amended medium (N = 0 mg/L, P: 3 mg/L), whereas, high lipid content (17.3%) was recorded in N-amended medium (N = 5 mg/L, P = 0 mg/L). However, for Chlorella sorokiniana 2 (isolated from the Knop’s medium), both lipid (17%) and carbohydrate accumulation (12.3%) were found to be maximum in the N-amended medium. Chlorella sorokiniana 2 showed a high saturated lipid accumulation compared to other strains. Kinetic modelling of the lipid profile revealed that the production rate of fatty acids and their various constituents were species dependent under identical conditions.
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An Assessment of Different Integration Strategies of Hydrothermal Carbonisation and Anaerobic Digestion of Water Hyacinth. ENERGIES 2020. [DOI: 10.3390/en13225983] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Water hyacinth (WH) is an invasive aquatic macrophyte that dominates freshwater bodies across the world. However, due to its rapid growth rate and wide-spread global presence, WH could offer great potential as a biomass feedstock, including for bioenergy generation. This study compares different integration strategies of hydrothermal carbonisation (HTC) and anaerobic digestion (AD) using WH, across a range of temperatures. These include (i) hydrochar combustion and process water digestion, (ii) hydrochar digestion, (iii) slurry digestion. HTC reactions were conducted at 150 °C, 200 °C, and 250 °C. Separation of hydrochars for combustion and process waters for digestion offers the most energetically-feasible valorisation route. However, hydrochars produced from WH display slagging and fouling tendencies; limiting their use in large-scale combustion. AD of WH slurry produced at 150 °C appears to be energetically-feasible and has the potential to also be a viable integration strategy between HTC and AD, using WH.
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Saha B, Sathyan A, Kalamdhad AS, Khwairakpam M. Anaerobic biodegradability test for Lantana camara to optimize the appropriate food to microorganism (F/M) ratio. ENVIRONMENTAL TECHNOLOGY 2020; 41:3191-3198. [PMID: 30961439 DOI: 10.1080/09593330.2019.1604810] [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: 06/10/2018] [Accepted: 03/31/2019] [Indexed: 06/09/2023]
Abstract
Invasion of Lantana camara all over the world and its management is a global problematic issue. Its rapid growth and competition with natural resources such as space, water, and nutrients of other plants, reasons for the demand to manage this noxious weed. This study was done to optimize the ideal food to microorganism (F/M) ratio. Different food to microorganism (F/M) ratios of 1, 1.5, 2 and 2.5 were studied along with one control where only cow dung was kept. Highest methane production was obtained from the F/M ratio of 1.5 (195.5 ± 8 mL CH4/g VS) and cumulative methane production from it was 4801.5 mL followed by ratios 2 and 2.5 respectively. In control, methane production was relatively low as compared to all the F/M ratios (2151.5 ± 8 mL). 20 L capacity batch reactor was performed with a working volume of 15.5 L where substrate and cow dung were fed according to the best ratio found during biochemical methane potential trial (BMP). Maximum methane yield was observed on the 19th day (2650 ± 18 ml CH4/g VS). Maximum volatile solids (VS) reduction was observed in the F/M ratio 1.5 (49.63%) followed by 2 and 2.5 respectively. The maximum amount of volatile fatty acid (VFA) was produced in F/M ratio 1.5 (715 ± 10) and 2 (715 ± 15) followed by ratios 2.5 and 1 respectively. Maximum soluble chemical oxygen demand (sCOD) was found in F/M ratio 1.5 (8000 mg/L). Morphological changes were captured in FESEM and XRD.
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Affiliation(s)
- Biswanath Saha
- Centre for Rural Technology, Indian Institute of Technology, Guwahati, Assam, India
| | - Arun Sathyan
- Centre for Environment, Indian Institute of Technology, Guwahati, Assam, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology, Guwahati, Assam, India
| | - Meena Khwairakpam
- Centre for Rural Technology, Indian Institute of Technology, Guwahati, Assam, India
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Saratale RG, Cho SK, Ghodake GS, Shin HS, Saratale GD, Park Y, Lee HS, Bharagava RN, Kim DS. Utilization of Noxious Weed Water Hyacinth Biomass as a Potential Feedstock for Biopolymers Production: A Novel Approach. Polymers (Basel) 2020; 12:polym12081704. [PMID: 32751380 PMCID: PMC7464782 DOI: 10.3390/polym12081704] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 11/16/2022] Open
Abstract
This study aims to utilize a noxious weed water hyacinth biomass (WH) for polyhydroxybutyrate (PHB) production. Alkaline and peracetic acid pretreatment was employed for the hydrolysis of WH and consequently enzymatic saccharification to produce fermentable sugars for PHB production. The pretreatment competence was determined using various operational parameters. By applying ambient conditions, alkaline pretreatment gave higher lignin removal of 65.0%, with 80.8% hydrolysis yield, and on enzyme hydrolysis (40 FPU/g of dry WH), produced total reducing sugar of about 523 mg/g of WH. The resulted WH enzymatic hydolysates were evaluated for the production of PHB by Ralstonia eutropha (ATCC 17699). The WH hydrolysates cultivation was compared to synthetic hydrolysates that contain a similar carbon composition in terms of bacterial growth and PHB synthesis. The effects of various supplements to enhance PHB production were estimated. Supplementation of corn steep liquor (CSL) as a cheap nitrogen source with WH hydrolysates favored a higher amount of PHB synthesis (73%), PHB titer of 7.30 g/L and PHB yield of 0.429 g/g of reducing sugar. Finally, using standard analytical tools, the physical and thermal characteristics of the extracted PHB were evaluated. The findings revealed WH was a promising and technically feasible option for transforming biomass into sustainable biopolymer conversion on a large scale.
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Affiliation(s)
- Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Korea;
| | - Si-Kyung Cho
- Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea; (S.-K.C.); (G.S.G.)
| | - Gajanan S. Ghodake
- Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea; (S.-K.C.); (G.S.G.)
| | - Han-Seung Shin
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Korea; (H.-S.S.); (Y.P.)
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Korea; (H.-S.S.); (Y.P.)
- Correspondence:
| | - Yooheon Park
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Korea; (H.-S.S.); (Y.P.)
| | - Hee-Seok Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Korea;
| | - Ram Naresh Bharagava
- Department of Microbiology, School for Environmental Sciences Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Uttar Pradesh 226025, India;
| | - Dong-Su Kim
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul 120-750, Korea;
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15
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Wazeri A, Elsamadony M, Tawfik A. Carbon emissions reduction by catalyzing H2 gas harvested from water hyacinth fermentation process using metallic salts. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.egypro.2018.09.178] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Wazeri A, Elsamadony M, Roux SL, Peu P, Tawfik A. Potentials of using mixed culture bacteria incorporated with sodium bicarbonate for hydrogen production from water hyacinth. BIORESOURCE TECHNOLOGY 2018; 263:365-374. [PMID: 29763800 DOI: 10.1016/j.biortech.2018.05.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/02/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
The aim of this study is to assess the potentials of using mixed culture bacteria incorporated with different concentrations of NaHCO3 for hydrogen production from water hyacinth (WH). The lowest hydrogen yield (HY) of 30.4 ± 1.9 mL/gTVS, H2 content (HC) of 19.5 ± 1.5% and hydrogenase enzyme (HE) activity of 0.06 ± 0.01 mgM.Breduced/min were registered for the cultures without supplementation of NaHCO3. The HY, HC, and HE activity were maximized at levels of 69.2 ± 4.3 mL/gTVS, 58.4 ± 3.6% and 0.18 ± 0.01 mgM.Breduced/min. respectively for the anaerobes supplied with 3.0 g NaHCO3/L. Furthermore, cellulose, hemicellulose, and lignin destruction efficiencies were 37.2 ± 2.3, 30.0 ± 1.9 and 20.9 ± 1.3% respectively due to the increase of cellulase and xylanase activities up to 2.73 ± 0.17 and 1.87 ± 0.12 U/mL, respectively. Moreover, the abundance of Firmicutes was substantially increased and accounted for 71% of the total OTU's. Microbes belonging to the order Clostridiales and OPB54 were particularly enriched in the medium supplemented with NaHCO3.
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Affiliation(s)
- Alaa Wazeri
- Egypt-Japan University of Science and Technology (E-JUST), Environmental Engineering Department, P.O. Box 179, New Borg El-Arab City, Alexandria 21934, Egypt; South Valley University, Faculty of Engineering, Civil Engineering Department, 83523 Qena City, Egypt.
| | - Mohamed Elsamadony
- Egypt-Japan University of Science and Technology (E-JUST), Environmental Engineering Department, P.O. Box 179, New Borg El-Arab City, Alexandria 21934, Egypt; Tanta University, Faculty of Engineering, Public Works Engineering Department, 31521 Tanta City, Egypt.
| | - Sophie Le Roux
- Université Bretagne Loire, Irstea, UR OPAALE, 17 av. de Cucillé, CS 64427, F-35044 Rennes, France
| | - Pascal Peu
- Université Bretagne Loire, Irstea, UR OPAALE, 17 av. de Cucillé, CS 64427, F-35044 Rennes, France
| | - Ahmed Tawfik
- Egypt-Japan University of Science and Technology (E-JUST), Environmental Engineering Department, P.O. Box 179, New Borg El-Arab City, Alexandria 21934, Egypt; National Research Centre, Water Pollution Research Department, Giza 12622, Egypt.
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17
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Rajesh Banu J, Sugitha S, Kannah RY, Kavitha S, Yeom IT. Marsilea spp.-A novel source of lignocellulosic biomass: Effect of solubilized lignin on anaerobic biodegradability and cost of energy products. BIORESOURCE TECHNOLOGY 2018; 255:220-228. [PMID: 29427873 DOI: 10.1016/j.biortech.2018.01.103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
The present study concerns the liquefying potential of an unusual source of lignocellulosic biomass (Marsilea spp., water clover, an aquatic fern) during combinative pretreatment. The focus was on how the pretreatment affects the biodegradability, methane production, and profitability of thermochemical dispersion disintegration (TCDD) based on liquefaction and soluble lignin. The TCDD process was effective at 12,000 rpm and 11 min under the optimized thermochemical conditions (80 °C and pH 11). The results from biodegradability tests imply that 30% liquefaction was sufficient to achieve enhanced biodegradability of about 0.280 g-COD/g-COD. When biodegradability was >30% inhibition was observed (0.267 and 0.264 g-COD/g-COD at 35-40% liquefaction) due to higher soluble lignin release (4.53-4.95 g/L). Scalable studies revealed that achievement of 30% liquefaction was beneficial in terms of the energy and cost benefit ratios (0.956 and 1.02), when compared to other choices.
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Affiliation(s)
- J Rajesh Banu
- Department of Civil Engineering, Regional campus, Anna University, Tirunelveli, India.
| | - S Sugitha
- Department of Civil Engineering, Regional campus, Anna University, Tirunelveli, India
| | - R Yukesh Kannah
- Department of Civil Engineering, Regional campus, Anna University, Tirunelveli, India
| | - S Kavitha
- Department of Civil Engineering, Regional campus, Anna University, Tirunelveli, India
| | - Ick Tae Yeom
- Graduate School of Water Resource, Sungkyunkwan University, Suwon, South Korea
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18
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Priya P, Nikhitha SO, Anand C, Dipin Nath RS, Krishnakumar B. Biomethanation of water hyacinth biomass. BIORESOURCE TECHNOLOGY 2018; 255:288-292. [PMID: 29428784 DOI: 10.1016/j.biortech.2018.01.119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/22/2018] [Accepted: 01/24/2018] [Indexed: 05/25/2023]
Abstract
The aim of this study was to test practical solutions to improve biogas yield during the anaerobic digestion of water hyacinth (WH) biomass. Increasing the WH (whole plant) solid content to ∼40% through sun drying (6 h), and its subsequent digestion increased biogas yield by 14% with a higher biogas methane (75%) content. Ensilation of dried WH (40% moisture) was found effective for its preservation to ensure its continuous availability even during offseasons, but the biogas yield from six months ensilated biomass was 20% less compared with fresh WH. Co-digestion of WH with waste activated sludge and food waste revealed ∼150 and ∼400 ml biogas/g VS respectively against ∼140 ml/g VS of WH alone. The practical approaches tested in this study like pre-treatment, preservation, and co-digestion of WH found to be effective to make its bio methanation more feasible.
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Affiliation(s)
- P Priya
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology, Industrial Estate (PO), Thiruvananthapuram 695 019, India
| | - S O Nikhitha
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology, Industrial Estate (PO), Thiruvananthapuram 695 019, India
| | - C Anand
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology, Industrial Estate (PO), Thiruvananthapuram 695 019, India
| | - R S Dipin Nath
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology, Industrial Estate (PO), Thiruvananthapuram 695 019, India
| | - B Krishnakumar
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology, Industrial Estate (PO), Thiruvananthapuram 695 019, India.
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19
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Jain MS, Kalamdhad AS. A review on management of Hydrilla verticillata and its utilization as potential nitrogen-rich biomass for compost or biogas production. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.biteb.2018.03.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Huang L, Xie C, Liu J, Zhang X, Chang K, Kuo J, Sun J, Xie W, Zheng L, Sun S, Buyukada M, Evrendilek F. Influence of catalysts on co-combustion of sewage sludge and water hyacinth blends as determined by TG-MS analysis. BIORESOURCE TECHNOLOGY 2018; 247:217-225. [PMID: 28950129 DOI: 10.1016/j.biortech.2017.09.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
Effects of the three metal carbonates (K2CO3, Na2CO3, and MgCO3) were quantified on catalytic co-combustion of the sewage sludge and water hyacinth (SW) blend using a thermogravimetric-mass spectrometric (TG-MS) analysis and kinetics modeling. The main dominating steps of the catalysts were the organic volatile matter release and combustion stage. Weighted mean values of activation energy (Em) were estimated at 181.18KJ·mol-1, 199.76KJ·mol-1, 138.76KJ·mol-1, and 177.88KJ·mol-1 for SW, SW+5% K2CO3, SW+5% Na2CO3, and SW+5% MgCO3, respectively. The lowest Em occurred with SW+5% Na2CO3. Overall, catalyst effect on co-combustion appeared to be negligible as indicated by Gibbs free energy (ΔG). The normalized intensities of SW+MgCO3 were strongest. The addition of Na2CO3 and MgCO3 to SW increased flue gases emissions (CO2, NO2, SO2, HCN, and NH3) of SW, whereas the addition of K2CO3 to SW reduced flue gases emissions from the entire combustion process.
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Affiliation(s)
- Limao Huang
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Candie Xie
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jingyong Liu
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Xiaochun Zhang
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - KenLin Chang
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jiahong Kuo
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jian Sun
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wuming Xie
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Li Zheng
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Shuiyu Sun
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Musa Buyukada
- Department of Environmental Engineering, Abant Izzet Baysal University, Bolu 14052, Turkey
| | - Fatih Evrendilek
- Department of Environmental Engineering, Abant Izzet Baysal University, Bolu 14052, Turkey
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Barua VB, Raju VW, Lippold S, Kalamdhad AS. Electrohydrolysis pretreatment of water hyacinth for enhanced hydrolysis. BIORESOURCE TECHNOLOGY 2017; 238:733-737. [PMID: 28433584 DOI: 10.1016/j.biortech.2017.04.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 06/07/2023]
Abstract
This study investigates the use of electrohydrolysis pretreatment on water hyacinth to cut short the hydrolysis step and increase biogas production at the same time. Electrohydrolysis pretreatment of water hyacinth at 20V for 60min exhibited improved solubilisation (42.9%). Therefore, bio-chemical methane potential (BMP) test was carried out between water hyacinth pretreated at 20V for 60min and untreated water hyacinth. By the end of 30days, cumulative methane production of 2455±17mL CH4/g VS for electrohydrolysis pretreated substrate and 1936±27mL CH4/g VS for the untreated substrate was achieved. Compositional analysis and characterization study revealed the efficiency of electrohydrolysis pretreatment in melting the lignin and lowering the cellulose crystallinity of water hyacinth.
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Affiliation(s)
- Visva Bharati Barua
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - V Wilson Raju
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Sophia Lippold
- Department of Civil Engineering, RWTH Aachen University, Mies-Van-der-Role Str. 1, 52074 Aachen, Germany
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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Liu J, Ma Z, Zhu H, Caiyin Q, Liang D, Wu H, Huang X, Qiao J. Improving xylose utilization of defatted rice bran for nisin production by overexpression of a xylose transcriptional regulator in Lactococcus lactis. BIORESOURCE TECHNOLOGY 2017; 238:690-697. [PMID: 28499254 DOI: 10.1016/j.biortech.2017.04.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
Present investigation explores the potential of defatted rice bran (DRB) serving as sole carbon source and partial nitrogen source to support Lactococcus lactis growth and nisin production. To retain the nutrients in DRB, especially protein fractions, thermal pretreatment followed by enzymatic hydrolysis without washing step was applied for saccharification. A maximum of 45.64g reducing sugar mainly containing 30.26g glucose and 5.66g xylose from 100g DRB was attained in hydrolysates of DRB (HD). A novel strategy of xylR (xylose transcriptional regulator) overexpression followed by evolutionary engineering was proposed, which significantly increased the capacity of L. lactis to metabolize xylose. Subsequently, RT-PCR results indicated that xylR overexpression stimulated expression of xylose assimilation genes synergistically with exposure to xylose. In HD medium, the highest nisin titer of the engineered strain FEXR was 3824.53IU/mL, which was 1.37 times of that in sucrose medium by the original strain F44.
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Affiliation(s)
- Jiaheng Liu
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Zelin Ma
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Hongji Zhu
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Qinggele Caiyin
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Dongmei Liang
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Hao Wu
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Xu Huang
- China Oil & Foodstuffs Corporation (COFCO), Nutrition and Health Research Institute, China
| | - Jianjun Qiao
- Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
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