River Water Treatment and Biomass Production Using Forage Rice and its Mathematical Modeling
Forage rice has high potential to produce biomass, and water treatment system using forage rice is one of the effective methods to achieve purifying the eutrophicated water and biomass production, simultaneously. To design and management the system adequately, the growth of rice and its nutrient uptake behaviors should be understood quantitatively. In this study, we performed a series of experiment to clarify the growth of forage rice and behavior of nitrogen compounds in the soil-water-rice system. In these experiments, a forage rice (KUSAHONAMT) was grown in pot type experimental apparatuses with supplying river water. In this pot, penetrated water is discharged from the bottom of the soil. The river water supplying rate was set as 10, 20, and 60 cm3/(cm2·day). Experimental results showed that the rice biomass was increased with the river water supplying rate within the range performed in this study. And the concentration of inorganic nitrogen (ammonium, nitrate and nitrite nitrogen) in discharged water was low in each case. A mathematical model includes physiochemical and biological processes of inorganic nitrogen compounds and rice growth was developed based on these experimental observations.
forage rice eutrophication river water biomass mathematical modeling
Masaki SAGEHASHI Sheng ZHOU Tatsuro NARUSE Mari OSADA Masaaki HOSOMI
Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Kog (Former Affiliation) Graduate School of Engineering, Tokyo University of Agriculture and Technology,
国际会议
第八届中日水环境暨NSFC-JST重大国际合作项目成果交流会
苏州
英文
19-23
2008-11-29（万方平台首次上网日期，不代表论文的发表时间）