Bacterial bioleaching of low grade nickel limonite and saprolite ores by mixotrophic bacteriaSiti Khodijah Chaerun, Siti Aisyah Alting, Mohammad Zaki Mubarok and Edy SanwaniE3S Web Conf., 8 (2016) 01029DOI: https://doi.org/10.1051/e3sconf/20160801029