2010 Fiscal Year Final Research Report

HYDROGEN PRODUCTION BY MECHANOCHEMICAL REACTION OF ALUMINIUM IN WATER AND ITS LIFE CYCLE ASSESSMENT

Research Project

Project/Area Number	20560758
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Recycling engineering
Research Institution	Kyushu University
Principal Investigator	FURUYAMA Takashi Kyushu University, 公益学部, 准教授 (90284546)
Project Period (FY)	2008 – 2010
Keywords	メカノケミカル / 炭酸ガス排出抑制 / 水中粉砕 / 水素 / アルミニウム / 遊星ボールミル
Research Abstract	In this study, experiments on the hydrogen production by wet grinding of aluminum through planetary ball mill were carried out with 100 alumina balls. Fine grinding speed and time in this work were fixed at 200 rpm and 1 hour, respectively. 280 ml of hydrogen gas was generated through the wet grinding with 3 g of aluminum powder in 100 ml of water. It is considered that surface temperature of aluminum increases from attrition and percussion with alumina medium, and water reacts with the surface of aluminum whose surface temperature reaches more than 100 degree to generate hydrogen gas. 280 ml of hydrogen could be obtained for 1 hour by electric power from window power generator with window speed of 5.27 m/s. Comparing former hydrogen generation method with water electrolysis (electric power : 3 W, generation time : 18.7 minutes, volume of hydrogen : 280 ml), it is found that 0.380 g of CO_2 could be reduced.

(4 results)