Authors:T. Hongo, J. Sugiyama, A. Yamazaki and A. Yamasaki
Large amounts of rice husk ash (RHA) are discharged from rice husk power plants, and the development of an effective system for recycling this RHA waste would be desirable. In the current study, the silica component of RHA obtained from a rice husk power plant in Myanmar was successfully used as raw material for the synthesis of the aluminosilicate nanotube (ASNT) material. The RHA used contained over 90 wt% of silica. The synthesized ASNT had a web-like structure formed of fi brous bundles, each containing many individual ASNT.
Authors:K. Shiraishi, T. Nakajima, Y. Takaku, A. Tsumura, S. Yamasaki, I. Los, I. Kamarikov, M. Buzinny and A. Zelensky
Approximately 100 freshwater samples (ground water, surface water, etc.) collected in the former USSR were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). Standard water, NBS SRM 1643b, was used for quality control. By using the semi-quantitative analysis mode, analytical data and certified values (or informative values) were in agreement within ±30%. Concentrations of B, Ni, Se, Sr and Ba were found to be higher than global means. Concentration levels of Ag and Pb tended to be lower. For Be, V, Cr, Mn, Co, Cu, Zn, As, Mo, Cd, Tl, and Bi, the concentrations were almost equal to the global levels.