Correction to: Anaerobic production of valeric acid from crude glycerol via chain elongation (International Journal of Environmental Science and Technology, (2019), 10.1007/s13762-019-02562-6) - Veras S; Cavalcante W; Gehring T; Ribeiro A; Ferreira T; Kato M; Rojas-Ojeda P; Sanz-Martin J; Leitão R (International Journal Of Environmental Science And Technology, 2020)