Rosa damascena waste as biosorbent for co-existing pollutants removal: fixed-bed column study and ANN modeling by Batool, Fatima, Kurniawan, Tonni Agustiono, Mohyuddin, Ayesha, Othman, Mohd Hafiz Dzarfan, Ali, Imran, Abdulkareem-Alsultan, G., Anouzla, Abdelkader, Goh, Hui Hwang, Zhang, Dongdong, Aziz, Faissal, Wayne Chew, Kit