| Title |
Environmental Fate Tracking of Manure-borne NH3-N in Paddy Field Based on a Fugacity Model |
| Authors |
김미숙 ( Mi-sug Kim ) ; 곽동희 ( Dong-heui Kwak ) |
| DOI |
https://doi.org/10.15681/KSWE.2019.35.3.224 |
| Keywords |
Ammonium-Nitrogen; Fertilizer; Fugacity; Liquid manure; Livestock excretions |
| Abstract |
Nitrogen components in liquid manure can reduce safety and quality of environment harmfully. To minimize the environmental risks of manure, understanding fate of manure in environment is necessary. This study aimed at investigating applicability of a simplified Level Ⅲ fugacity model for simulating NH3-N component to analyze environmental fate and transport of NH3-N in liquid manure and to provide basis for improving management of N in the liquid manure system and for minimizing the environmental impacts of N. The model simulation conducted for four environmental compartments (air, water, soil, and rice plants) during rice-cropping to trace NH3-N component and provided applicability of the Level Ⅲ fugacity model in studying the environmental fate of NH3-N in manure. Most of NH3-N was found in water body and in rice plants depending upon the physicochemical properties and proper removal processes. For more precise model results, the model is needed to modify with the detailed removal processes in each compartment and to collect proper and accurate information for input parameters. Further study should be about simulations of various N-typed fertilizers to compare with the liquid manure based on a modified and relatively simplified Level Ⅲ fugacity model. |