alicyclobacillus aeris alicyclobacillus aeris alicyclobacillus aeris is a species of gram positive/gram variable, strictly aerobic, bacterium. the bacteria are acidophilic and produced endospores. it was first isolated from a copper mine in inner mongolia, china. the species was first described in 2009, and the name is derived from the latin aeris (of ore). alicyclobacillus aeris scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: alicyclobacillaceae genus: alicyclobacillus species: a. aeris binomial name alicyclobacillus aerisguo et al. 2009 the optimum growth temperature for a. aeris is 30 °c, and can grow in the 25-35 °c range. the optimum ph is 3.5, and can grow in ph 2.0-6.0. alicyclobacillus aeris can oxidize iron and sulfur, as can alicyclobacillus disulfidooxidans, a. ferrooxydans, and a. tolerans. alicyclobacillus fodiniaquatilis was isolated from a different copper mine.