Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure

Membranes

卷:10

MatiasB. Vanotti¹  MaríaCruz García-González²  David Hernández-González²  Beatriz Molinuevo-Salces²  Berta Riaño² 

[1] Agricultural Research Service, Coastal Plains Soil, Water and Plant Research Center, United States Department of Agriculture, 2611 W. Lucas St., Florence, SC 29501, USA;

[2] Agricultural Technological Institute of Castilla y León, Ctra. Burgos, km 119, 47071 Valladolid, Spain;

关键词: swine manure;    gas-permeable membranes;    ammonia recovery;    nitrogen recycling;   

DOI  :  10.3390/membranes10100270

来源: DOAJ

【 摘 要 】

Gas-permeable membranes technology presents a high potential for nitrogen (N) recovery from wastewaters rich in ammonia (NH₃). The EU project Ammonia Trapping (AT) is aimed at transferring knowledge from the lab-scale level to on-farm pilot-scale level, using this technology to recover NH₃ from livestock wastewaters. The goal of this study is to report the results of an on-farm pilot-scale demonstration plant using gas-permeable membranes to recover N from raw swine manure. After a setup optimization of the plant, stable, and continuous operation was achieved. The maximum NH₃ recovery rate obtained was 38.20 g NH₃-N m⁻² membrane day⁻¹. This recovery rate was greatly affected by the temperature of the process. In addition to its contribution to NH₃ emissions reduction, this technology contributes to the recovery of nutrients in the form of a concentrated stable ammonium sulphate solution. This solution contained 3.2% of N, which makes it suitable for fertigation. The economic approach revealed an economic feasibility of the technology, resulting in a cost of 2.07 € per kg N recovered.

【 授权许可】

Unknown