Cerca
Ara mostrant els elements 1-10 de 12
Effectiveness of precision feeding in reducing N excretion in dairy cattle
(Elsevier, 2023-07-01)
Two periods enrolling 56 (milk yield 36.2 ± 7.91 kg/d) and 58 (milk yield 32.4 ± 4.99 kg/d) grouped-fed dairy cows were performed to evaluate nutrient adjustment and N emissions of a precision feeding ...
Towards a standardization of biomethane potential tests
(IWA Publishing, 2016-09-19)
Production of biogas from different organic materials is a most interesting source of renewable energy.
The biomethane potential (BMP) of these materials has to be determined to get insight in ...
Combined Acidification and Solar Drying of Pig Slurries for Nutrient Recovery and Controlled Atmospheric Emissions
(MDPI, 2021-01-25)
The solar drying of pig slurries was tested in a pilot-scale greenhouse (10 m2 footprint), operated with forced ventilation under low and high solar irradiation in Mediterranean conditions. Gaseous ...
Acidification and solar drying of manure-based digestate to produce improved fertilizing products
(Elsevier, 2023-03-13)
The increase in energy and fertilizer consumption makes it necessary to develop sustainable alternatives for
agriculture. Anaerobic digestion and digestates appeared to be suitable options. However, ...
Influence of pH and Temperature on Struvite Purity and Recovery from Anaerobic Digestate
(MDPI, 2021-09-27)
The precipitation of struvite (MgNH4PO4.6H2O) from wastewater streams simultaneosuly recovers nitrogen (N) and phosphorus (P) for reuse as fertilisers. Struvite crystallisation is controlled by pH, ...
Development of a modified plug-flow anaerobic digester for biogas production from animal manures
(MDPI, 2019-07-08)
Traditional plug-flow anaerobic reactors (PFRs) are characterized by lacking a mixing system and operating at high total solid concentrations, which limits their applicability for several kinds of ...
Use of wood and cork in biofilters for the simultaneous removal of nitrates and pesticides from groundwater
(Elsevier, 2022-12-07)
About 13% and 7% of monitored groundwater stations in Europe exceed the permitted levels of nitrates (50 mg NO3− L−1) or pesticides (0.1 μg L−1), respectively. Although slow sand filtration can remove ...
Improved anaerobic biodegradability of wheat straw, solid cattle manure and solid slaughterhouse by alkali, ultrasonic and alkali-ultrasonic pre-treatment
(Taylor & Francis, 2018-09-07)
Wheat straw and animal wastes are important feedstock for biogas production in Europe. Yet, the high content of lignocellulosic and refractory materials causes the process to be relatively slow. Therefore, ...
Assessment of a novel microalgae-cork based technology for removing antibiotics, pesticides and nitrates from groundwater
(Elsevier, 2022-04-29)
Groundwater pollution has increased in recent years due to the intensification of agricultural and livestock activities. This results in a significant reduction in available freshwater resources. Here, ...
A Metal-Free and Biotically Degradable Battery for Portable Single-Use Applications
(Wiley, 2017-05-16)
This article presents a new approach for environmentally benign, low-cost batteries intended for single-use applications. The proposed battery is designed and fabricated using exclusively organic materials ...