Integrated Processing of Secondary Raw Materials as the Main Direction of Ecologization of Beet Sugar Production In The Republic of KazakhstanGulzira Zhaxygulova, Maiya Myrzabekova and Guzel SadykovaE3S Web Conf., 159 (2020) 03002DOI: https://doi.org/10.1051/e3sconf/202015903002