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Production of chitosan-based composite film reinforced with lignin-rich lignocellulose nanofibers from rice husk

Journal of Bioresources and Bioproducts 2024年第2期9卷 174-184页

作者： Hye Jee Kang Yeon Ju Lee Jin Kyoung Lee Irnia Nurika Sri Suhartini Deokyeong Choe Dong Hyun Kim Hoon Choi Natasha P.Murphy Ho Yong Kim Young Hoon Jung School of Food Science and Biotechnology Kyungpook National UniversityDaegu 41566Republic of Korea CPR S&T Co. Ltd.Gunpo 15880Republic of Korea Department of Agroindustrial Technology Faculty of Agricultural TechnologyUniversitas BrawijayaMalang 65145Indonesia Renewable Resources and Enabling Sciences Center National Renewable Energy LaboratoryGoldenCO 80401United States Center for Bio-based Chemistry Korea Research Institute of Chemical TechnologyUlsan 44429Republic of Korea

Lignocellulosic nanofibers(LCNFs),implying lignin-containing cellulose fibers,maintain the prop-erties of both lignin and cellulose,which are hydrophobic and hydrophilic,*** pres-ence of hydrophobic lignin in LCNFs is expected to be an economical and attractive option that can improve the thermal and mechanical properties of ***,this study was conducted to produce lignin-rich LCNFs from sugar-rich waste obtained from rice husks after acidic *** LCNFs were produced from the lignin-rich solid fractions obtained after pretreatment and enzymatic hydrolysis,which were then incorporated as an additive into a chitosan-based *** variations in lignin content in the range of approximately 50.6%-66.8%in differently obtained LCNFs gave significantly different optical strengths and mechanical *** controllable processes may allow for customized film ***,the glucose-rich liquid fractions obtained after pretreatment and enzymatic hydrolysis were used as a substrate for ethanol fermentation to achieve total utilization of rice husk biomass *** conclusion,the lignin-rich biomass fraction holds promise as a suitable material for chitosan-LCNF film and has the potential to increase the economic feasibility of the biomaterial industry.

关键词： rice husk Lignocellulose nanofiber Lignin-based material Chitosan film Upcycling

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Investigation of the Fermentation Mode of rice husk for the Stabilization of Earth Plaster

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Journal of Minerals and Materials Characterization and Engineering 2024年第1期12卷 17-36页

作者： Nafissatou Savadogo Yasmine Binta Traore Nathael Lankoande Philbert Nshimiyimana Adamah Messan Département de Génie Civil Ecole Supérieure d’Ingénierie de Fada (ESI-F) Université de Fada N’Gourma (UFDG) Fada N’Gourma Burkina Faso Laboratoire Eco-Matériaux et Habitats Durables (LEMHaD) Institut International d’Ingénierie de l’Eau et de l’Environnement (Institut 2iE) Ouagadougou Burkina Faso

Despite its low resistance to humidity, adobe remains the most widely used material for housing construction, particularly in developing countries. The present study aims to assess different modes of use of fermented RH and to evaluate their influence on the behavior of raw earth for application in plaster. The influences of two types of RH are evaluated: granular rice husk (RHg) and powdered RH (RHp). The clay mainly consists of clay (40%), silt (22%), and sand (38.4%), with a small proportion of gravel (0.24%). Its liquidity limit is 40% and the plasticity index is 26.5%. The mixtures were designed using earth and each of the two rice husks at the volumetric content of 10%, 15% and 20% of the total volume mixed with water 36.5%, 38.5% and 40.3% and fermented for three weeks. Each fermented mixture was added to the soil to form the paste, and 40 × 40 × 160 mm3 test speciments were made for characterization. The results generally show an improvement in the physico-mechanical properties and water resistance of the mortars containing fermented RH, with an optimal content between 10% and 15%. The powdered RH improved the performance of the mortar better than granular RH.

关键词： Earth Plaster rice husk Clay Fermentation Adobe

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rice husk Bio-Chars as Adsorbent for Methylene Blue and Ethinylestradiol from Water

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Journal of Renewable Materials 2020年第3期8卷 275-287页

作者： Jonathan Lacuesta Iris Beatriz Vega Erramuspe Liji Sobhana Dennis Kronlund Jouko Peltonen Soledad Gutiérrez Pedro Fardim Department of Chemical Engineering University of the RepublicJulio Herrera y Reissig 565Montevideo11300Uruguay Laboratory of Fibre and Cellulose Technology Åbo Akademi UniversityPorthansgatan 3Turku/ÅboFI-20500Finland Laboratory of Physical Chemistry and Center of Excellence for Functional Materials Åbo Akademi UniversityPorthansgatan 3Turku/ÅboFI-20500Finland Department of Chemical Engineering KU LeuvenCelestijnenlaan 200FLeuvenB-3001Belgium

Biobased adsorbents are eco-friendly materials used for water and wastewater treatment and air *** research work explores the potential use of rice husk chars as a low-cost adsorbent for pollutants from water,such as methylene blue and *** husk chars are prepared by combustion of rice husks(RH-Char)or pre-treated rice husks(PT-Char).A third char(M-Char)supplied by a local company which uses rice husks as combustion material is also *** chars are characterized by field emission scanning electron microscopy(FE-SEM)in conjunction with energy dispersive X-ray spectroscopy(EDX),X-ray powder diffraction(XRD),and zeta-potential *** three bio-chars are tested as adsorbent for the removal of two wastewater contaminants:methylene blue(MB)and ethinylestradiol(EE2).According to the results,RH-Char and PT-Char present zeta-potential values near−52 mV,whereas M-Char shows a zeta-potential value of−32 *** RH-Char and PTChar are rich in amorphous SiO_(2) and M-Char has crystalline SiO_(2)(cristobalite).The bio-chars remove MB and EE2 efficiently showing the following results for the adsorption capacity of MB(inμmol g^(−1)):769.2(RH-Char),41.2(PT-Char),and 31.7(M-Char).The adsorption capacity values for EE2(inμmol g^(−1))are:33.1(RH-Char),19.1(PT-Char),and 16.9(M-Char).The information gathered in the present work evidences the potential of rice husks bio-chars for bio-remediation and may in future contribute to the conversion of a side-stream from the rice industry into value-added materials.

关键词： rice husk bio-char thermal treatment adsorption methylene blue ethinylestradiol

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Pyrolysis of rice husk and sawdust for liquid fuel

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Journal of Environmental Sciences 2006年第2期18卷 392-396页

作者： ZHU Xi-feng ZHENG Ji-lu GUO Qing-xiang ZHU Qing-shi Biomass Clean Energy Laboratory University of Science and Technology of China Hefei-230026 China

The paper is focused on studying how to convert rice husk and sawdust into liquid fuel. rice husk, sawdust and their mixture were pyrolyzed at the temperature between 420℃ and 540℃, and the main product of liquid fuel was obtained. The experimental result showed that the yield of liquid fuel heavily depended on the kind of feedstock and pyrolysis temperature. In the experiments, the maximum liquid yields for rice husk, sawdust and their mixture were 56% at 465 ℃, 61% at 490℃ and 60% at 475℃ respectively. Analysis with GC-MS and other apparatus indicated that the liquid fuel is a complicated organic compound with low caloric value and can be directly used as fuel oil without any up-grading. As a crude oil, the liquid fuel can be refined to be vehicle oil.

关键词： solid organic waste rice husk sawdust pyrolysis liquid fuel

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Mechanical properties of a clay soil reinforced with rice husk under drained and undrained conditions

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第10期15卷 2676-2686页

作者： Claudia Regina Bernardi Baldin Maiky Yamato Kawanami Weiner Gustavo Silva Costa Vitor Reinaldo Bordignon Cristhyano Cavali da Luz Ronaldo Luis dos Santos Izzo Federal University of Technology-Paraná CuritibaBrazil

Fiber-reinforced soils have been increasingly used in geotechnical *** the years,research has sought to understand and investigate the influences of fibers as reinforcement in soilefiber *** study assessed the behavior of clayey soil in the city of Curitiba(Paraná,Brazil),adding rice husk fiber(RHF),an industrial waste from Cooperativa Agroindustrial in Alegrete(Rio Grande do Sul,Brazil).To evaluate the effect of the presence of natural RHF on the mechanical behavior of compacted soil,aspects such as the influence of fiber content and the drained and undrained behaviors of the soil were evaluated through unconfined triaxial compression *** following tests were realized:soil granulometry,specific mass of solids and Atterberg *** were produced in quadruplicate for the soil and mixtures using the RHF contents of 0.5%,0.75%,1%and 1.5%to determine the unconfined compressive strength(UCS).Triaxial tests were realized on a pure soil specimen and the specimens with 1%RHF under confining pressures of 50 kPa,100 kPa,200 kPa and 400 *** interactions at the interface between husk surface and soil were analyzed using scanning electron microscopy(SEM).In UCS tests,specimens with RHF percentages of 1%and 1.5%presented the highest results,with an increment of 36%compared to the soil without *** results of the consolidated drained triaxial compression tests show that in terms of effective stress,there was a small difference in the strength of the compacted pure soil and soil with the addition of *** the undrained tests,the strength increased with the inclusion of husk,with a reduction of 50%in cohesion and an increment of 22%in friction angle for specimens containing RHF compared to the soil without RHF additions.

关键词： Clay soil rice husk Soil reinforcemen

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Influence of La_2O_3 on preparation and performance of porous cordierite from rice husk

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Journal of Rare Earths 2010年第4期28卷 614-617页

作者：郭伟陆洪彬冯春霞 Department of Materials Engineering Yancheng Institute of Technology

A porous cordierite was synthesized at 1350 ℃ using rice husk as silica source and pore forming agent, and La2O3 as fluxing agent. The crystal phases of the cordierite were analyzed by X-ray diffraction (XRD) and their microstructures were observed by scanning electronic microscopy (SEM). The flexural strength, porosity and thermal expansion coefficient of the porous cordierite samples were inves- tigated in detail. Results showed that when 5 wt.% La2O3 was added, the flexural strength, porosity and thermal...

关键词： porous ceramic cordierite rice husk lanthana

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Biorefinery of rice husk to Obtain Functionalized Bioactive Compounds

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Journal of Renewable Materials 2019年第4期7卷 313-324页

作者： M.Lopretti N.Lecot A.Rodriguez G.Lluberas F.Orozco L.Bolaños G.Montes De Oca H.Cerecetto J.Vega-Baudrit Laboratorio de Técnicas Nucleares Aplicadas a Bioquímica y Biotecnología Centro de Investigaciones Nucleares-Facultad de CienciasMataojo 2055Montevideo CP 11400Uruguay Área de Radiofarmacia Centro de Investigaciones Nucleares-Facultad de CienciasMataojo 2055Montevideo CP 11400Uruguay Química Bioanalítica Instituto Polo Tecnológico de Pando-Facultad de QuímicaUdelaRBy Pass de Pando y Ruta 8Pando-Canelones CP 91000Uruguay Laboratorio de Nacional de Nanotecnología-CeNAT-CONARE Costa Rica 1174-1200San JoséCP 10109Costa Rica Laboratorio de Polímeros POLIUNA-Escuela de Química Universidad NacionalHerediaSan JoséCP 86-3000Costa Rica

The biomass industrialization valorisation of grains and cereals is considered an opportunity for the countries where agro-industrial activity is one of its main economic activities,rendering new higher-value products with a concomitant solution to waste accumulation *** that end,in this work we describe and characterise bioactive compounds generation from rice husk by semisolid fermentation,obtained from 500 g of the material at room temperature and 60%humidity with mixed cultures of Phanerochaete chrysosporium and Gloeophyllum *** extract was evaluated in different situations:murine mammary tumour cells(4T1),normal cells(NIH 3T3)and in Lactobacillus acidophilus,and Trichoderma *** results exhibited that the extract inhibited 4T1 cells at concentrations higher than 20μg/mL,but did not inhibit normal cells,and displayed germicide activity after 3 days *** propose that these functionalized compounds have a potential application in industry/agriculture/medicine obtained from rice husk waste.

关键词： Biorefinery rice husk bioactive compounds valorisation of biomass veratryl alcohol

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Preparation and properties of low cost porous titanium by using rice husk as hold space

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Progress in Natural Science:Materials International 2017年第3期27卷 344-349页

作者： Xinsheng Wang Zhenlin Lu Lei Jia Feizhou Li School of Materials Science and Engineering Xi'an University of Technology Department of Mechanical Baoji University of Arts and Sciences

The present study demonstrates an effective low cost effective process for the production of porous titanium with 50-60 vol% porosity using 20 wt% rice husk(RH) with the hold spaces in the size ranges of 100-180,180-250,250-380,and 380-550 μ*** analysis of the samples revealed an interconnected pore microstructure consisting of a mixture of coarse channel pores,created during burnout of *** compressive strength of the developed samples was in the range of 17-70 MPa and depended strongly on their porosity and pore *** amounts of cleavage steps appeared on the brittle fracture surface after compression of the *** 3D morphology of porous titanium surface with rice husk sizes of 100-180μm and 380-550μm can be characterized by the micro-hole surface of pore size,and the size of the hole diameter and *** developed porous titanium is considered potentially useful in future medical or industrial application of biomass.

关键词： Porous Titanium rice husk Mechanical properties 3D morphology Biomass

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Pyrolysis of rice husk in a Fluidized Bed Reactor:Evaluate the Characteristics of Fractional Bio-Oil and Particulate Emission of Carbonaceous Aerosol(CA)

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Journal of Renewable Materials 2020年第3期8卷 329-346页

作者： Ning Li Weiming Yi Zhihe Li Lihong Wang Yongjun Li Xueyuan Bai Mei Jiang School of Agricultural Engineering and Food Science Shandong University of TechnologyZibo255000China Shandong Research Center of Engineering and Technology for Clean Energy Zibo255000China

Bio-oil production via pyrolysis is one of promising technologies for renewable energy production from ***,the complicated biooil is still a challenge for high-valued application and during biomass pyrolysis,the emission of non-cleaned aerosol,the potential emission,namely carbonaceous aerosol(CA)increased the difficulty of the commercial *** this study,rice husk pyrolysis was performed in a semi-continuous fluidized bed reactor coupled with fractional *** effects of pyrolysis and condensation temperature on the properties of bio-oil and emission of CAwere investigated *** indicated that the in-situ separation of vapors was accomplished via condensers of different temperatures(85℃and−10℃).The bio-oil with different physiochemical properties were obtained in the high content of phenols and lower acids of BO1 and high content of acids and better *** size distribution of CA was found primarily classified as sub-micrometer grade particles,which have a diameter of less than 1.1μ*** particular,CA existed in three representative forms:bead,granular aggregate,and *** results of light absorption of total organic carbon(TOC)and non-volatile organic carbon(NVOC)indicated that the absorption per mass increased in the single temperature with the decrement of wavelength and it improved as the pyrolysis temperature increased at the specified *** absorption per mass was to maximum value(3.7 m^(2)/g)at 360 nm wavelength and 600℃.TOC demonstrated a strong light absorption and a wide spectral range dependence(AAE:5.08-10.05)which enhanced the light absorption in the ultra-violet and low-visible regions.

关键词： rice husk pyrolysis bio-oil aerosol size distribution light absorption

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Preparation and characterization of rice husk/ferrite composites

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Chinese Chemical Letters 2010年第1期21卷 122-126页

作者： Chen, Xue Gang Lv, Shuang Shuang Ye, Ying Cheng, Ji Peng Yin, Su Hang Zhejiang Univ Dept Ocean Sci & Engn Hangzhou 310027 Zhejiang Peoples R China Zhejiang Inst Geol & Mineral Resources Hangzhou 310007 Zhejiang Peoples R China Zhejiang Univ Dept Mat Sci & Engn Hangzhou 310027 Zhejiang Peoples R China

A novel ferrite composite using rice husk as substrate has been prepared via high temperature treatment under nitrogen *** rice husk substrate consists of porous activated carbon and silica,where spinel ferrite particles with average diameter of 59 nm are *** surface area of the composite is greater than 170 m^2 g^(-1) and the bulk density is less than 0.6 g cm^(-3).Inert atmosphere is indispensable for the synthesis of pure ferrite composites,while different preparation temperatures ...

关键词： Spinel ferrite rice husk Composite materials Catalysts Adsorbent

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