Redirigiendo al acceso original de articulo en 22 segundos...
Inicio  /  Applied Sciences  /  Vol: 9 Par: 13 (2019)  /  Artículo
ARTÍCULO
TITULO

Physical Properties of Dairy Manure Pre- and Post-Anaerobic Digestion

Hui Wang    
Horacio A. Aguirre-Villegas    
Rebecca A. Larson and Asli Alkan-Ozkaynak    

Resumen

Manure characteristics change through processing, including anaerobic digestion (AD). These changes can alter handling of manure during downstream operations. This study analyzed the density, total solids (TS) content, and volatile solids (VS) content of pre-digested and anaerobically digested dairy manure from seven dairy farms in Wisconsin. The density of pre-digested manure increased from 990 to 1065 kg m-3 as the TS level increased from 1.5% to 13.0%. Density and TS for pre-digested manure from facilities using separated solids as bedding were related with a linear model for TS ranging from 1.5% to 13.0% and with a polynomial model for TS ranging from 1.5% to 50%. The model shows that density decreases with an increasing TS content when TS is greater than 8.0%. Manure from dairy facilities that used sand bedding had a VS/TS ratio of 0.87. This ratio was higher than the ratio when manure solids were used as bedding (0.81) and when food waste was incorporated into the digester (0.77). This study also provides a simple methodology to estimate biogas yield by using the density of pre- and post-digested manure.

 Artículos similares

       
 
Laura Moretti, Leonardo Palozza and Antonio D?Andrea    
No theoretical model effectively explains the blistering process, which provokes functional distress in asphalt pavements worldwide. This study focuses on the possible causes of blistering, the physical processes that drive blistering, the role of asphal... ver más
Revista: Applied Sciences

 
Jun Yeong Kim, Chang Geun Song, Jung Lee, Jong-Hyun Kim, Jong Wan Lee and Sun-Jeong Kim    
In this paper, we propose a learning model for tracking the isolines of fluid based on the physical properties of particles in particle-based fluid simulations. Our method involves analyzing which weights, closely related to surface tracking among the va... ver más
Revista: Applied Sciences

 
Emin Mercan    
This study aimed to determine the effects of the ozone treatment of film-forming solutions (FFSs) containing whey protein concentrate (WPC) and gelatine on biopolymer films? physical, mechanical, and thermal properties. Film samples were produced from a ... ver más
Revista: Applied Sciences

 
Shengbo Hu, Zhijun Li, Peng Lu, Qingkai Wang, Jie Wei and Qiuming Zhao    
In their natural state, snow crystals are influenced by the atmosphere during formation and multiple factors after landing, resulting in varying particle sizes and unstable particle morphologies that are challenging to quantify. The current research main... ver más
Revista: Water

 
Oksana Kurkina, Efim Pelinovsky and Andrey Kurkin    
The higher-order nonlinear Schrödinger equation with combined nonlinearities is derived by an asymptotic reduction from the (2+4) Korteweg?de Vries model for weakly nonlinear wave packets for the context of interfacial waves in a three-layer symmetric me... ver más
Revista: Water