Fermentation Efficiency and Effect on Morphological Change of Nitrogen and Phosphorous with the Litter Types of Cowshed

Journal of the Korean Chemical Society

article

Keon Sang Ryoo¹ 

[1] Department of Applied Chemistry, Andong National University

关键词: N;    P;    Litter;    Manure;    Struvite;    Calcium phosphate;   

DOI  :  10.5012/jkcs.2022.66.2.86

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The manure made of chaff and sawdust as litter was collected separately at a cowshed of a livestock farm inAndondg city. The fermentation efficiency of excreta is greatly influenced by the type and characteristics of litter and a factorto be considered for reducing N and P, the causes of eutrophication. Changes in weight with temperature and constituents ofsample were examined using TG-DTA and XRF, respectively. NO2−, NO3− , and PO43− ions and NH4+, T-P and T-N eluted frommanure by rain were analyzed using ion chromatograph and UV/Vis spectrometry, respectively. As a result, the fermentationefficiency of excreta in sawdust manure is three times higher as compared with chaff manure. The higher the fermentationefficiency, ammonia nitrogen was highly de-nitrogenated and organic phosphorous were also changed into phosphorous ions.Furthermore, phosphorous ions can be removed by transforming insoluble salts such as calcium phosphate (CaHPO4·3H2O)and struvite (NH4MgPO4·6H2O) with addition of Ca and Mg.

【 授权许可】

Unknown