[논문]왕겨 바이오차와 유기농자재 혼합에 따른 주요 양분 용출 모델 적용 및 N2O 배출량 산정

이동건; 최재이; 심창기; 남주희; 윤석인; 송종석; 박도균; 신중두

doi:10.17137/korrae.2023.31.3.43

왕겨 바이오차와 유기농자재 혼합에 따른 주요 양분 용출 모델 적용 및 N2O 배출량 산정
Application of major plant nutrient releasing model and N2O emissions to the leachate from the mixtures of rice hull biochar and organic fertilizer materials 원문보기

유기물자원화 = Journal of the Korea Organic Resources Recycling Association, v.31 no.3, 2023년, pp.43 - 53

이동건 (전북테크노파크 전북과학기술센터 다학바이오택) , 최재이 (전북테크노파크 전북과학기술센터 다학바이오택) , 심창기 (농촌진흥청 국립농업과학원 유기농업과) , 남주희 (경기도농업기술원 친환경미생물연구소) , 윤석인 (원광대학교 생물환경화학과) , 송종석 (한국핵융합에너지연구원 플라즈마기술연구소) , 박도균 (충남대학교 생물환경화학과) , 신중두 (전북테크노파크 전북과학기술센터 다학바이오택)

Abstract ▼ AI-Helper

This batch experiment evaluated the impacts of major plant nutrient releases by applying the modified Hyperbola model on the leachates and N2O emissions from incorporated rice hull biochar with organic fertilizer materials. The treatments consisted of the control as incorporated with organic fertilizer materials, the incorporated rice hull biochar with organic fertilizer materials, and the incorporated plasma-activated rice hull biochar with organic fertilizer materials under redox conditions. The results indicated that the maximum release amount of NH4-N was 3486.3 mg L-1 in the control, and their reduction rates of NH4-N, NO3-N, PO4-P, and K were 8.0%, 17.5% 44.3.0% and 8.7%, respectively, relative to the control. In the control, the highest soluble amount of PO4-P was 681.0 mg L-1. The estimations for accumulated NH4-N, NO3-N, PO4-P, and K-releases in all the treatments were significantly (p<0.01) fitted with a modified Hyperbola model. For greenhouse gas emissions, the lowest cumulative N2O was 340.4 mg kg-1 in the soil incorporated with plasma-activated rice hull biochar, and the reduction rates were 27.8% and 86.4% in the rice hull biochar and plasma-activated rice hull biochar treatments, respectively, compared to the control. Therefore, it concluded that the incorporated rice hull biochar can be especially useful for controlling PO4-P release and N2O emissions for bio-fertilizer applications.

주제어

표/그림 (11)

표 Table 1. Chemical Characteristics of Rice Hull Biochar Fellet, Plasma-treated Rice Hull Biochar, Poultry Manure Compost, and Oil Cake Used in the Experiment
그림 Fig. 1. Scheme of the reactor for greenhouse gas emissions.
표 Table 2. Physicochemical Properties of Soil Used in the Experiment
그림 Fig. 2. Releasing curves of accumulated NH₄-N and NO₃-N in precipitation water from the treatments with a modified hyperbola model. The values are the means of triplicate samples. Error bars indicate the standard deviation.
표 Table 3. Estimation Model for NH₄-N Release from Different Types of the Blended Rice Hull Biochar
그림 Fig. 3. Releasing curves of accumulated PO₄-P precipitation water from the treatments with a modified hyperbola model.
표 Table 4. Estimation Model for PO₄-P Release from Different Types of the Blended Rice Hull Biochar
그림 Fig. 4. Releasing curves of accumulated K in precipitation water from the treatments with a modified hyperbola model.
표 Table 5. Estimation Model for K Release from Different Types of the Blended Biochar Pellet (Rice Hull Biochar)
그림 Fig. 5. Effect of accumulated N₂O emissions in the soil incorporated with plasma-treated rice hull biochar and activated rice hull biochar for organic bio-fertilizer. The values were average of the three replications, and error bars display standard deviation (p<0.05).
표 Table 6. Comparisons of Total Water-soluble Accumulated Major Nutrients from the Treatments

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