KEKANA, Paul; SITHOLE, Bruce; RAMJUGERNATH, Deresh. Stirred cell ultrafiltration of lignin from black liquor generated from South African kraft mills. South African Journal of Science, [S. l.], v. 112, n. 11/12, p. 7, 2016. DOI: 10.17159/sajs.2016/20150280. Disponível em: https://sajs.co.za/article/view/3682. Acesso em: 6 may. 2024.