THUY, P. T. Evaluation of ion exchange material from sulfonated polystyrene waste synthesized for removal Cr3+ from aqueous solution by column experiment. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, [S. l.], v. 13, n. 2, p. 92–100, 2019. DOI: 10.31814/stce.nuce2019-13(2)-09. Disponível em: https://stce.vjst.net/index.php/en/article/view/1324. Acesso em: 18 sep. 2026.