Modelling and optimization for methylene blue adsorption using graphene oxide/chitosan composites via artificial neural network-particle swarm optimization by Goh, Kheng Khiam, Karri, Rama Rao, Mubarak, Nabisab Mujawar, Mohammad Khalid, Mohammad Khalid, Walvekar, Rashmi, Abdullah, Ezzat Chan, Rahman, Muhammad Ekhlasur