Kinetic modeling of methylene blue adsorption onto acid-activated spent tea: A comparison between linear and non-linear regression analysis Journal title: Journal of Advances in Environmental Health Research (JAEHR) Authors: Ali-Akbar Babaei, Zahra Alaee, Elham Ahmadpour, Amirhosein Ramazanpour-Esfahani Subject(s): Environmental Sciences, Environmental Toxicology, Environmental Protection, Public, Environmental & Occupational Health, Engineering, Environmental