| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Research Abstract |
We have studied the possibility of advanced water purification by using a high gradient superconducting magnetic separation HGSMS with magnetic adsorbents. We have developed magnetic mesoporous activated carbon MMPC for humic acid and other organic matters, oxidized magnetic activated carbon OxMAC for ammonia nitrogen, and magnetic zeolite MZL for ammonia nitrogen. By means of expanding micro-pores by heat treatment, the humic acid was able to be efficiently absorbed by MMPC. About 80 % of ammonia nitrogen can be adsorbed from 0.8 mg/L of ammonium chloride solution by Ox-MAC due to the acid functionalities fixed on the surface. Since the adsorbed humic acid and ammonia nitrogen were easily released by heating in atmosphere at low temperatures. MZL also effectively absorbed ammonia nitrogen by Na ion exchange. By using HGSMS, MMPC with a large magnetization can be collected from the solution by 99.95 % at a high speed flow velocity of 1 m/s and low magnetic fields under 2 T.
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