检索结果-内蒙古大学图书馆

Converting hydroponic effluent into high PUFA-rich biomass by mixotrophically cultivated microalga Chlorella sp. through light regulation for sustainable production of bioingredient and bioenergy

引用

Journal of Environmental chemical engineering 2025年第3期13卷

作者： Nanthakrit Sriket Antira Wichaphian Apiwit Kamngoen Jeeraporn Pekkoh Wasu Pathom-aree Yupa Chromkaew Benjamas Cheirsilp Wageeporn Maneechote Yoong Kit Leong Sirasit Srinuanpan Master of Science Program in Applied Microbiology (International Program) Department of Biology Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand Department of Biology Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand Microbial Biorefinery and Biochemical Process Engineering Research Group Chiang Mai University Chiang Mai 50200 Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization Chiang Mai University Chiang Mai 50200 Thailand Department of Plant and Soil Sciences Faculty of Agriculture Chiang Mai University Chiang Mai 50200 Thailand Program of Biotechnology Faculty of Agro-Industry Prince of Songkla University Hat Yai Songkhla 90110 Thailand Office of Research Administration Office of the University Chiang Mai University Chiang Mai 50200 Thailand Department of Chemical and Materials Engineering Tunghai University Taichung 407 Taiwan

Currently, addressing global environmental challenges—particularly the management of nutrients and resource recovery from hydroponic effluent (HE)—is crucial for promoting sustainable agriculture and fostering circularity in the pursuit of a net-zero future. This study aimed to evaluate the potential of Chlorella sp. to convert HE into high-value biomass rich in polyunsaturated fatty acids (PUFAs) under mixotrophic conditions with optimized light illumination. The results demonstrated that supplementing HE with half the concentration of commercial JM medium, and optimizing with blue light, a 16-hour light/8-hour dark photoperiod, and a light intensity of 50 µmol/m 2 /s resulted in a biomass production of 4.04 g/L, containing 16.81 % lipids and 34.04 % PUFAs. These conditions also achieved significant pollutant removal from HE, including 93.33 % nitrate reduction, 100 % ammonia removal, 99.08 % phosphate removal, and 92.68 % reduction in chemical oxygen demand. The nutritional profile of the fatty acids suggests potential applications in the functional ingredient sector, while their characteristics indicate strong potential as biodiesel feedstock, meeting international biodiesel fuel standards. Overall, this study presents an eco-friendly model for nutrient recovery from hydroponic effluent using Chlorella sp., promoting sustainable agriculture, reducing environmental impact, and contributing to bioresource innovation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Hydrolysis of Banana Tree Pseudostem and Second-Generation Ethanol Production by Saccharomyces Cerevisae

引用

Journal of Environmental Science and engineering(A) 2013年第1期2卷 65-69页

作者： Luiz Carlos Goncaives Filho Gustavo Alexandre Achilles Fischer Noeli Sellin Cintia Marangoni Ozair Souza Masters Program in Process Engineering University of the Region of Joinville-Univille Joinville 89200-000 Brazil Department of Chemical Engineering University of the Region of Joinville-Univille Joinville 89200-000 Brazil

The alcoholic fermentation of substrates rich in free soluble sugars is well known and has been industrially developed. However, the production of second-generation ethanol from lignocellulosic biomass, which is abundantly available worldwide, remains under development. The aim of this study was to evaluate the possibility of using the Musa cavendischii banana tree pseudostem as a substrate for alcoholic fermentation. Hydrolisis methods using dilute sulfuric acid （1% and 2% H2SO4; 15 and 30 min; 90 ℃, 100 ℃ and 120 ℃） and enzymes （pH 5.5; and 45 ℃ for 24 h reaction time） were evaluated both separately and in combination. The effect of chemical pre-treatment of the substrate using 1% and 3% m/m NaOH （120 ℃, 15 min） was verified for both methods. The highest yield coefficient of fermentable sugars from dry biomass （Yrs = 74%） was obtained using enzymatic hydrolysis and pre-treatment with 3% NaOH. Using acid hydrolysis, the maximum yield obtained was 22% （1% H2SO4, 120 ℃, 30 min）. Fermentation of the hydrolysates was satisfactory, and the maximum yield of ethanol formed per unit of substrate consumed, total productivity and efficiency values were 0.35 g, 0.90 g ethanol L^-1·h^-1 and 65.9%, respectively. This demonstrates the utility of banana tree pseudostems in second-generation ethanol production.

关键词： Bioethanol biofuel biomass saccharification agricultural waste

来源：评论

学校读者我要写书评

暂无评论

Study of passenger vessels design in Berau Regency, East Kalimantan, Indonesia for public transportation 2

Study of passenger vessels design in Berau Regency, East Kal...

引用

2nd Maritime Safety International Conference, MASTIC 2020

作者： Utami, S.D. Haripamudya, H. Kurniawan, S.B. Department of Marine Engineering Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Sukolilo Surabaya60111 Indonesia Study Program of Ship Design and Construction Department of Shipbuilding Politeknik Perkapalan Negeri Surabaya Sukolilo Surabaya60111 Indonesia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Bangi Selangor43600 Malaysia

Globalization had increased global economic activity, including production, trade and distribution activities in developing countries, especially in Asia. The increasing of trade traffic and cargo transportation in archipelago country like Indonesia, requires the utilization of sea lanes. This study was aimed to present the suitability of ship design to be passengers transportation in Berau Regency, East Kalimantan, Indonesia. The proposed design should be in accordance with the conditions of Berau which has 6 districts crossed by the river which still lack of transportation facilities. This research proposed an optimal ship design that can be used as a reference for renewable ships in Berau waters. This study produced a watershed design analysis concept as part of the reference and boundary dimensions of the ship. The obtained main size of the ship using linear regression method was total length of 12.5 meters, 3 meters wide, 1.5 meters high, and 0.6 meters full of water. Resistance analysis using the Savitsky method showed the engine capacity of 2x150 pk with a service speed of 25 knots. Maximum speed of 30 knots with a distance of 57.32 mill can be reached with 2 hours service speed and 1 hour 40 minutes at a maximum speed of 30 knots with the resistance value 12.8 kN. The total estimated budget for the production of this ship was Rp 1.773.656.800. This design may be adopted as an integrated reference for the procurement of transportation facilities for passenger ships, especially in the Berau river. © Published under licence by IOP Publishing Ltd.

关键词： Ships

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Molecularly imprinted polymers for the detection of volatile biomarkers” [Trends Anal. Chem. 177 (2024) 117783]

引用

TrAC Trends in Analytical Chemistry 2025年 184卷

作者： Tomasz Wasilewski Sinem Orbay Nathália F. Brito Karol Sikora Ana Claudia A. Melo Matias E. Melendez Bartosz Szulczyński Amitav Sanyal Wojciech Kamysz Jacek Gębicki Department of Inorganic Chemistry Faculty of Pharmacy Medical University of Gdańsk Hallera 107 Gdańsk 80-416 Poland Biomedical Engineering Institute Boğaziçi University Çengelköy 34684 Istanbul Turkey Biomedical Engineering Erzincan Binali Yıldırım University Erzincan 24002 Turkey Program of Cell and Gene Therapy Brazilian National Cancer Institute Rio de Janeiro RJ 20231-050 Brazil Instituto de Química Universidade Federal do Rio de Janeiro Rio de Janeiro RJ 21941-909 Brazil Department of Process Engineering and Chemical Technology Chemical Faculty Gdańsk University of Technology Narutowicza 11/12 Gdańsk 80-233 Poland Department of Chemistry Boğaziçi University Bebek 34342 Istanbul Turkey

来源：评论

学校读者我要写书评

暂无评论

Enhancing the mixotrophic production of PUFA lipid-rich microalga Chlorella biomass using hydroponic effluent and its application in a zero-waste multiproduct biorefinery to promote a circular bioeconomy

引用

Energy Conversion and Management: X 2025年

作者： Nanthakrit Sriket Antira Wichaphian Apiwit Kamngoen Jeeraporn Pekkoh Tawanchai Khuendee Yupa Chromkaew Benjamas Cheirsilp Wageeporn Maneechote Supakit Chaipoot Gochakorn Kanthakat Kuan Shiong Khoo Yoong Kit Leong Sirasit Srinuanpan Master of Science Program in Applied Microbiology (International Program) Department of Biology Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand Department of Biology Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand Microbial Biorefinery and Biochemical Process Engineering Research Group Chiang Mai University Chiang Mai 50200 Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization Chiang Mai University Chiang Mai 50200 Thailand Department of Plant and Soil Sciences Faculty of Agriculture Chiang Mai University Chiang Mai 50200 Thailand Program of Biotechnology Faculty of Agro-Industry Prince of Songkla University Hat Yai Songkhla 90110 Thailand Office of Research Administration Office of the University Chiang Mai University Chiang Mai 50200 Thailand Multidisciplinary Research Institute Chiang Mai University Chiang Mai 50200 Thailand Faculty of Agro-Industry Chiang Mai University Chiang Mai 50100 Thailand Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung 407 Taiwan

This study optimized the mixotrophic cultivation of Chlorella sp. G049 using hydroponic effluent to maximize biomass, lipid, and polyunsaturated fatty acid accumulation. Optimal conditions, identified through response surface methodology, included 20-hour light exposure, 60.03 µmol/m 2 /s light intensity, and supplementation with 7.21 g/L glucose and 14.22 mg/L indole-3-acetic acid. Under these conditions, Chlorella sp. G049 achieved 3.77 g/L dry cell weight, 23.78 % lipid content, and 27.78 % polyunsaturated fatty acid (PUFA). Nutrient removal efficiencies were 100 % for ammonium, 63.10 % for nitrate, 98.85 % for phosphate, and 71.30 % for chemical oxygen demand, with carbon dioxide fixation reaching 1.00 g/L/day. A sequential biorefinery approach enabled sustainable biomass valorization, with high polyunsaturated fatty acid content for biodiesel and protein extraction yielding an amino acid profile with notable antioxidant activity. The residual biomass served as a biofertilizer, enhancing soil quality and promoting plant growth in lettuce. These results highlight the potential of Chlorella sp. G049 for sustainable wastewater treatment, carbon sequestration, and multiproduct biorefinery applications.

关键词： Hydroponic Effluent Biorefinery Zero-waste Microalgae PUFA

来源：评论

学校读者我要写书评

暂无评论

Transient heat transfer in a packed-bed elliptic cylindrical reactor: A finite-volume approach

引用

Defect and Diffusion Forum 2017年第1期380卷 79-85页

作者： Moura da Silva, R. Barbosa de Lima, A.G. Gomes de Oliveira, L. Vasconcellos Araújo, M. Sousa Santos, R. Federal University of Campina Grande Center of Science and Technology Process Engineering Postgraduate Program Campina Grande Paraíba58429-900 Brazil Federal Institute of Education Science and Technology of Paraíba Princesa Isabel Paraíba58755-000 Brazil Federal University of Campina Grande Center of Science and Technology Mechanical Engineering Department Campina Grande Paraíba58429-900 Brazil Federal University of Campina Grande Center of Science and Technology Chemical Engineering Department Campina Grande Paraíba58429-900 Brazil

This work aims to develop a transient three-dimensional mathematical model using the elliptic cylindrical coordinate system, to predict heat transfer in a elliptic cylindrical packed fixed bed reactor. The model considers variable thermo physical properties and a parabolic temperature profile at the fluid inlet. The governing equation is solved using the finite volume method. Results of temperature profile along the reactor are presented and discussed at different *** was verified that the maximum heat transfer rate inside the reactor occurs near the extreme region close to minor semi-axis of the ellipse;the higher temperatures at the reactor surface are also in this region, along the entire height of the bed;the steady-state regime is reached at t = 4.5 s of process, presenting after this time interval,small axial temperature gradients and high radial gradients along of the reactor bed;the parabolic temperature profile give to the bed a predominance of radial temperature gradients, and the radial porosity profile favours a higher heat transfer rate at reactor surface. © 2017 Trans Tech Publications, Switzerland

关键词： Heat transfer

来源：评论

学校读者我要写书评

暂无评论

Development of Supported Catalyst for Hydrogen Production from Sodium Borohydride

Development of Supported Catalyst for Hydrogen Production fr...

引用

2024 IEEE Global Energy Conference, GEC 2024

作者： Sayilgan, Ahmet Onat, Erhan Ekinci, Selma Izgi, Mehmet Sait Tatvan Vocational School Electricity and Energy Program Bitlis Eren University Bitlis Turkey Organized Industrial Zone Vocational School Electricity and Energy Program Bitlis Eren University Bitlis Turkey Vocational School of Technical Sciences Department of Chemistry and Chemical Process Technology Batman University Batman Turkey Faculty of Engineering Architecture Siirt University Siirt Turkey

ISBN: (纸本)9798331532611

The best solution to the problems caused by fossil fuels and the limitations of renewable energy sources is the conversion of hydrogen into energy in fuel cells. The transportation and storage problems, which are the main obstacles to the conversion of hydrogen into energy in fuel cells, can be overcome by storing hydrogen in boron compounds. The recovery of hydrogen stored in boron compounds when needed is carried out through catalytic processes. In this study, a supported catalyst was synthesized for use in hydrogen production from sodium borohydride (SBH), which is one of the main boron compounds used in the solid storage of hydrogen, and the dehydrogenation parameters of the synthesized catalyst were investigated. In this context, chenopodium botrys plant extract was used as a support material for nickel (Ni) metal atoms. At the end of the extraction carried out through a hydrothermal process, Ni atoms were decorated using the impregnation method in the extract, and the Ni@KBHE catalyst was produced via reduction under SBH. After the washing, filtration, and drying processes were carried out under a nitrogen atmosphere, the solution medium, catalyst amount, SBH concentration, and temperature parameters of SBH hydrolysis with the crumbled catalyst were optimized. Optimum values for hydrogen production were obtained using 5% NaOH, 60 mg of catalyst, and 2% SBH. The hydrogen production rate (HGR) at these values was 4664 mL/g min. As a result of the catalytic reaction kinetic calculations, it was determined that the reaction was nth order, and the reaction activation energy was 49.4 kJ/mol. ©2024 IEEE.

关键词： Activation energy

来源：评论

学校读者我要写书评

暂无评论

Renewable Biodiesel Production from Oleaginous Yeast Biomass Using Industrial Wastes

Renewable Biodiesel Production from Oleaginous Yeast Biomass...

引用

2019 Research, Invention, and Innovation Congress, RI2C 2019

作者： Kongruang, Sasithorn Roytrakul, Sittiruk Sriariyanun, Malinee Bioprocess Engineering and Biotechnology Center Department of Biotechnology Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Electrical and Computer Engineering Faculty of Engineering King Mongkut' S University of Technology North Bangkok Bangkok Thailand Chemical and Process Engineering Program Sirindhorn International Thai-German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

The accumulation lipid from oleaginous microorganisms is recognized as a second generation fuel. Biooil is known to as intracellular product of oily yeast utilizing various carbon substrates and converting different quantities of lipids in the form of triacylglycerols. This second generation fuel can be used to make biodiesel via a transesterification process. This study investigated the morphological characteristics of eight strains of Thai oleaginous yeasts via microscopy and analyzed the fatty acid profiling of yeasts cultured in three carbon sources: glucose, sugar cane molasses and crude glycerol in order to estimate biodiesel properties. To approach this goal, batch fermentations were used to culture eight yeast strains, Rhodosporidium toruloides TISTR 5123, TISTR 5154, TISTR 5149, Yarrowia lipolytica TISTR 5054, TISTR 5151, TISTR 5621, Rhodotorula glutinis TISTR 5159 and Rhodotorula graminis TISTR 5124 for 96 h under 30°C at 250 rpm. Result revealed that eight yeast strains contained significant amounts of fatty acids and lipids and accumulated mainly palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C 18:1) and linoleic acid (C18:2), and they are suitable for the production of biodiesel. Fatty acid productions and profiles indicated that these yeast strains can be potentially used as the triacylglycerols producers for biodiesel production. © 2020 The Authors, published by EDP Sciences.

关键词： Lipids

来源：评论

学校读者我要写书评

暂无评论

Bacterial Cellulose Films for Biodegradable Packaging with Essential Oils

引用

Macromolecular Symposia 2024年第6期413卷

作者： Teixeira, Stefani Regina Zibetti Garcia, Michele Cristina Formolo Silva, Denise Abati Kasper Kurek, Ana Paula Schneider, AndréaLima dosSantos Pezzin, Ana Paula Testa Postgraduate Program in Process Engineering University of the Joinville Region – UNIVILLE SC Joinville89219-710 Brazil Department of Chemical Engineering University of the Joinville Region – UNIVILLE SC Joinville89219-710 Brazil

Petrochemical polymers provide most packaging materials in the food industry and cause environmental problems due to their non-biodegradability. Developing biodegradable polymers with additives is a strategy, and bacterial cellulose (BC) presents favorable properties for this application. This work aims to evaluate the effect of essential oils (EOs) of clove, cinnamon, basil, and oregano as additives in BC matrix for application in food packaging. BC membranes are synthesized by the bacteria Komagataeibacter hansenii and incorporated into EOs using ethanol as a solvent. The membranes are characterized by fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), antibacterial activity, and soil biodegradation. Furthermore, the samples are also tested for their antifungal potential on the surface of bread slices. FTIR analyses confirm the incorporation of EOs into BC membranes. TGA analysis indicates a slight increase in thermal stability for the incorporated samples. All samples show antibacterial potential, except BC, incorporated with the essential basil oil. The fungal analysis is performed by visually evaluating the appearance of filamentous fungi on the surface of the bread pieces. Soil biodegradation tests demonstrate mass loss for all membranes. © 2024 Wiley-VCH GmbH.

关键词： Cellulose

来源：评论

学校读者我要写书评

暂无评论

Groundwater Salt-Dissolution Distribution on Salt Producing process Involved in chemical Speciation in Sakon Nakhon Basin, Thailand

Groundwater Salt-Dissolution Distribution on Salt Producing ...

引用

2013 International Conference on Frontiers of Environment,Energy and Bioscience(ICFEEB 2013)

作者： SARUNYA PROMKOTRA TAWIWAN KANGSADAN Department of Geotechnology Faculty of Technology Khon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process Engineering The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok (KMUTNB)

Salinity contamination of brine to natural groundwater affecting from the local salt productions is investigated to assess the distribution of chemical speciation and behaviors related to groundwater flow in Sakon Nakhon Basin, northeast of Thailand. Hydrochemical species are applied to study the variation of chemical stability involved and the source and flow paths of groundwater transporting in salt-dissolution region. Hydraulic head relationship and chemical constituents indicate that groundwater flows from the southern highland to the west-eastern lowland. Groundwater dissolving rock salts and gypsum (or evaporites) flows downward to the lowland following the flow direction influenced by topography, where is located as the salt evaporating fields. Hydrogeological cross-section model is designed for evaluating the salt-dissolution zones depending on the range of the total dissolved solids.

关键词： Groundwater Salt-Dissolution Distribution on Salt Producing process Involved in chemical Speciation in Sakon Nakhon Basin Thailand

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：