Phosphorus leaching from soils amended with thermally gasified piggery waste ash

TY - JOUR

T1 - Phosphorus leaching from soils amended with thermally gasified piggery waste ash

AU - Kuligowski, Ksawery

AU - Poulsen, Tjalfe Gorm

PY - 2009/9

Y1 - 2009/9

N2 - In regions with intensive livestock farming, thermal treatment for local energy extraction from the manure and export of the P rich ash as a fertilizer has gained interest. One of the main risks associated with P fertilizers is eutrophication of water bodies. In this study P and K mobility in ash from anaerobically digested, thermally gasified (GA) and incinerated (IA) piggery waste has been tested using water loads ranging from 0.1 to 200 ml g-1. Leaching of P from soil columns amended with GA was investigated for one P application rate (205 kg P ha-1 corresponding to 91 mg P kg-1 soil dry matter) as a function of precipitation rate (9.5 and 2.5 mm h-1), soil type (Jyndevad agricultural soil and sand), amount of time elapsed between ash amendment and onset of precipitation (0 and 5 weeks) and compared to leaching from soils amended with a commercial fertilizer (Na2HPO4). Water soluble P in GA and IA constituted 0.04% and 0.8% of total ash P. Ash amended soil released much less P (0.35% of total P applied in sand) than Na2HPO4 (97% and 12% of total P applied in Jyndevad and sand, respectively).

AB - In regions with intensive livestock farming, thermal treatment for local energy extraction from the manure and export of the P rich ash as a fertilizer has gained interest. One of the main risks associated with P fertilizers is eutrophication of water bodies. In this study P and K mobility in ash from anaerobically digested, thermally gasified (GA) and incinerated (IA) piggery waste has been tested using water loads ranging from 0.1 to 200 ml g-1. Leaching of P from soil columns amended with GA was investigated for one P application rate (205 kg P ha-1 corresponding to 91 mg P kg-1 soil dry matter) as a function of precipitation rate (9.5 and 2.5 mm h-1), soil type (Jyndevad agricultural soil and sand), amount of time elapsed between ash amendment and onset of precipitation (0 and 5 weeks) and compared to leaching from soils amended with a commercial fertilizer (Na2HPO4). Water soluble P in GA and IA constituted 0.04% and 0.8% of total ash P. Ash amended soil released much less P (0.35% of total P applied in sand) than Na2HPO4 (97% and 12% of total P applied in Jyndevad and sand, respectively).

UR - http://www.scopus.com/inward/record.url?scp=67650214878&partnerID=8YFLogxK

U2 - 10.1016/j.wasman.2009.04.004

DO - 10.1016/j.wasman.2009.04.004

M3 - 文章

C2 - 19427189

AN - SCOPUS:67650214878

VL - 29

SP - 2500

EP - 2508

JO - Waste Management

JF - Waste Management

SN - 0956-053X

IS - 9

ER -