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Please use this identifier to cite or link to this item: http://dspace.ucuenca.edu.ec/handle/123456789/33265
Title: Hot water extraction of anaerobic digested dairy fiber for wood plastic composite
Authors: Pereira Ferraz, Gabriela
Frear, Craig
Peláez Samaniego, Manuel Raúl
Englund, Karl
García Pérez, Manuel
metadata.dc.ucuenca.correspondencia: García Pérez, Manuel, mgarcia-perez@wsu.edu
Keywords: Anaerobic Digestion
Dairy Fiber
Hot Water Extraction
Wood Plastic Composites
metadata.dc.ucuenca.areaconocimientofrascatiamplio: 1. Ciencias Naturales y Exactas
metadata.dc.ucuenca.areaconocimientofrascatidetallado: 1.5.8 Ciencias del Medioambiente
metadata.dc.ucuenca.areaconocimientofrascatiespecifico: 1.5 Ciencias de la Tierra y el Ambiente
metadata.dc.ucuenca.areaconocimientounescoamplio: 05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas
metadata.dc.ucuenca.areaconocimientounescodetallado: 0521 - Ciencias Ambientales
metadata.dc.ucuenca.areaconocimientounescoespecifico: 052 - Medio Ambiente
Issue Date: 2016
metadata.dc.ucuenca.volumen: volumen 11, número 4
metadata.dc.source: BioResources
metadata.dc.identifier.doi: 
metadata.dc.type: ARTÍCULO
Abstract: 
Dairy farmers worldwide are facing the difficulty of managing or disposing of dairy manure. Anaerobic digestion (AD) is an option for treating dairy manure and producing biogas. A byproduct of AD is fiber, which is only partially being used despite its potential for different products, including wood plastic composites (WPCs). However, some properties of WPCs need to be improved to use them in high moisture content environments. This work evaluates the effect of hot water extraction (HWE) (at 160 °C for 60 min) of the AD dairy fiber on properties of WPCs. WPCs were produced using AD fiber via extrusion and tested for mechanical properties and water affinity. The WPCs produced with HWE fiber exhibited increased mechanical strength (36%) and stiffness (30%), and reduced strain at break (15%) compared to composites produced with untreated fiber. Water sorption and thickness swelling were reduced by 39% and 36%, respectively, after immersion in water for 98 days. The diffusion constant of WPCs produced with HWE fiber was also reduced by 64%. These results show that HWE is an effective method for enhancing mechanical properties and reducing hydrophilicity of WPCs produced from AD fiber.
Description: 
Dairy farmers worldwide are facing the difficulty of managing or disposing of dairy manure. Anaerobic digestion (AD) is an option for treating dairy manure and producing biogas. A byproduct of AD is fiber, which is only partially being used despite its potential for different products, including wood plastic composites (WPCs). However, some properties of WPCs need to be improved to use them in high moisture content environments. This work evaluates the effect of hot water extraction (HWE) (at 160 °C for 60 min) of the AD dairy fiber on properties of WPCs. WPCs were produced using AD fiber via extrusion and tested for mechanical properties and water affinity. The WPCs produced with HWE fiber exhibited increased mechanical strength (36%) and stiffness (30%), and reduced strain at break (15%) compared to composites produced with untreated fiber. Water sorption and thickness swelling were reduced by 39% and 36%, respectively, after immersion in water for 98 days. The diffusion constant of WPCs produced with HWE fiber was also reduced by 64%. These results show that HWE is an effective method for enhancing mechanical properties and reducing hydrophilicity of WPCs produced from AD fiber.
URI: http://dspace.ucuenca.edu.ec/handle/123456789/33265
http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_4_8139_Pereira_Hot_Water_Extraction_Dairy_Fiber/4697
metadata.dc.ucuenca.urifuente: https://bioresources.cnr.ncsu.edu/
ISSN: 1930-2126
Appears in Collections:Artículos

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