Aguilar Manuel Jimenez
Research and Development, Instituto de Investigación y Formación Agraria y Pesquera, Consejería de Innovación, Ciencia y Empresa, Junta de Andalucía, Granada, Spain.
J Environ Manage. 2009 Jun;90(8):2845-8. doi: 10.1016/j.jenvman.2009.02.015. Epub 2009 Mar 31.
In this work the application of two levels of N fertilizer (NH(4)NO(3)) dissolved in water or olive oil mill wastewater (OOMW) diluted 10 or 20 times in water, has been studied in relation to the properties of two soils (Loam and Silt-Clay-Loam). Also, the effect of irrigation water bubbled with CO(2) (Dissolved Inorganic Carbon, DIC) was studied. Nitrate N, ammonium N, total N, organic C (OC), and CaCO(3) contents were determined in the soil as well as pH, electrical conductivity (EC), oxidation-reduction potential (ORP), and absorbance at 250 and 360 nm. Our data provide evidence that inorganic-N fertilizer dissolved in OOMW significantly reduced the emission of nitrates from soils for two months, increasing OC values. Moreover, OOMW significantly lowered the ORP. The irrigation with DIC also increased soil OC. Thus, the application of inorganic-N fertilizers dissolved in OOMW diluted with water on soils and the irrigation with water bubbled with CO(2) could reduce the environmental impact of OOMW, nitrates, and CO(2).
在这项工作中，研究了将两级氮肥（硝酸铵）溶解于水或用水稀释10倍或20倍的橄榄油厂废水（OOMW）中，并与两种土壤（壤土和粉质粘壤土）的性质相关联。此外，还研究了用二氧化碳（溶解无机碳，DIC）鼓泡灌溉水的效果。测定了土壤中的硝态氮、铵态氮、总氮、有机碳（OC）和碳酸钙含量，以及pH值、电导率（EC）、氧化还原电位（ORP）和250及360nm处的吸光度。我们的数据表明，溶解于OOMW中的无机氮肥在两个月内显著降低了土壤中硝酸盐的排放，提高了OC值。此外，OOMW显著降低了ORP。用DIC灌溉也增加了土壤OC。因此，将溶解于用水稀释的OOMW中的无机氮肥施用于土壤以及用二氧化碳鼓泡的水灌溉，可以减少OOMW、硝酸盐和二氧化碳对环境的影响。
