Adsorption of anionic dyes on spent tea leaves modified with polyethyleneimine (PEI-STL)

• Main Authors: Wong, Syieluing, H. Tumari, Hasnaa, Ngadi, Norzita, Mohamed, Nurul Balqis, Hassan, Onn, Mat, Ramli, Saidina Amin, Nor Aishah
• Format: Article
• Published: Elsevier Ltd. 2019
• Subjects: TP Chemical technology
• Online Access: http://eprints.utm.my/id/eprint/87582/; http://dx.doi.org/10.1016/j.jclepro.2018.09.201

This paper investigates the adsorption performance of spent tea leaves (STL) modified with polyethylenimine (PEI) on two anionic dyes, namely Reactive Black 5 (RB5) and Methyl Orange (MO), from simulated wastewater. Modification of STL surface with PEI reduced the STL surface area. Abundant basic gr...