This is a peer-reviewed, accepted author manuscript of the following article: Azat, S., Korobeinyk, A. V., Moustakas, K., & Inglezakis, V. J. (2019). Sustainable production of pure silica from rice husk waste in Kazakhstan. Journal of Cleaner Production, 217, 352-359. https://doi.org/10.1016/j.jclepro.2019.01.142 Sustainable production of pure silica from rice husk waste in Kazakhstan S. Azat a,b , A.V. Korobeinyk a,c , K. Moustakas d , V.J. Inglezakis a,e* a Environmental Science & Technology Group (ESTg), Chemical and Materials Engineering Department, School of Engineering, Nazarbayev University, Kabanbay Batyr, Ave. 53, Astana, Kazakhstan b al-Farabi Kazakh National University, Almaty, Kazakhstan c O.O. Chuiko Institute of Surface Chemistry of NAS of Ukraine, Kyiv, Ukraine d School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zographou Campus, Athens, Greece e The Environment and Resource Efficiency Cluster, Nazarbayev University, Kabanbay Batyr, Ave. 53, Astana, Kazakhstan *Corresponding author: [email protected] Keywords: rice husk; rice husk ash; white rice husk; silica; agricultural waste; Research highlights: Rice husk – an agricultural waste was successfully converted into pure amorphous silica; Three different locally grown samples of rice hull were utilized for silica extraction;