Degradation Rate and Velocity under Different Acidic and Alkaline Degradation Agents for Liquid Fertilizer of Rendering By-product

Abstract

In order to develop liquid fertilizer using rendering by-product, rates and velocities of degradation from rendering by-product using pig cadaver investigated under different amount of injection and time with degradation agents (KOH, NaOH, HNO 3 and H 2 SO 4 ). The amount of residue by degradation agent of HNO 3 treatment method was higher than that in KOH, NaOH and H 2 SO 4 treatment methods. The degradation velocities (K; hr -1 ) of rendering by-product in KOH treatment method were higher in the order of 25% (0.0309 hr -1 ) > 30% (0.0268 hr -1 ) > 20% (0.0142 hr -1 ) > 15% (0.0111 hr -1 ) > 10% (0.0102 hr -1 ) of weight of rendering by-product. In all conditions, the degradation velocity of rendering by-product using H 2 SO 4 30% of weight of rendering by-product was rapid than that for KOH, NaOH and HNO 3 treatment methods. Degradation rates of rendering by-product using NaOH were similar to that of KOH and H 2 SO 4 except for HNO 3 under injecting 25% and 30% of rendering by-product weight.

Analysis of livestock carcass management in Japan: A case study of the rendering plant in Gunma Prefecture

“…국내에서도 가축 폐사체의 처리와 관련된 다양한 연구 가 시도된 바 있다. 농업적 재활용을 위한 연구로는 가축 폐사체의 비료가치 평가 (Seo et al, 2011), 가축 폐사체 랜 더링 부산물의 산 ‧ 알칼리분해 특성 분석 (Seo et al, 2012) 및 가축 폐사체 유래 액상부산물의 액비 활용 가능성 평가 (Seo et al, 2013), 랜더링 방법으로 처리된 가축 폐사체의 퇴비화 재활용을 위한 톱밥 배합 비율 특성 평가 , 고온혐기성 소화에 의한 가축 폐사체 처리 타당 성 검토 (Kim and Sung, 2008) Table 2. The characteristics of the manufacturing department of rendering plant in Gunma Prefecture, Japan.…”