This research report on the effect of hydrothermal treatment temperature on morphology of obtained calcium silicate from Vietnam Rice Husk Ash (VRHA). VRHA is collected at the Mekong Delta River, burn to obtain the active silica which can be used for further step. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 19, SOÁ K6- 2016 Effect of hydrothermal treatment temperature on morphology of obtained calcium silicate from rice husk ash Pham Trung Kien1 - Email: phamtrungkien@ Tran Pham Quang Nguyen1 Nguyen Hoc Thang2 1 Faculty of Materials Engineering, Ho Chi Minh City University of Technology, VNU-HCM. 2 Faculty of Chemical Technology, Ho Chi Minh City University of Food Industry. (Manuscript Received on July, 2016, Manuscript Revised on September, 2016) ABSTRACT This research report on the effect of XRD and SEM of samples before and after hydrothermal treatment temperature on morphology of obtained calcium silicate from hydrothermal treatment confirm the present of nano-Calcium Silicate Hydrate (CSH) such as Vietnam Rice Husk Ash (VRHA). VRHA is collected at the Mekong Delta River, burn to Tobermorite and Xonotlite. These CSH can be used as inorganic light weight thermal insulator obtain the active silica which can be used for application. The obtained calcium silicate after further step. The obtained silica is hydrothermal treated in the present of Ca-source so that the hydrothermal treatment at high temperature have leave-like crystal, and these crystal Ca/Si molar ratio of for different treatment temperature such as 110, 130, 150 and 180oC. interlock together. Keywords: Hydrothermal, rice hush ash, calcium silicate, environmental materials treatment method [6-8]. However, the effect of 1. INTRODUCTION Vietnam is an agriculture producing country, in which produce lot of rice and its by product is rice husk ash (RHA). The RHA is consider as waste of agriculture industry, and treated by burn in the open air. This process cause air pollution, thus attracted researcher to find alternative method to reduce the impact of rice husk ash to environment [1-3]. The research group in Department of Ceramic Materials aim to reuse rice husk ash as source of Silica (SiO2) [4-5]. Our research group .
