[{"command":"settings","settings":{"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"user":{"uid":0,"permissionsHash":"d9587e6f410d2e7f476e3da6cb10a457c78ab82347f962bf83d9020620f901dd"}},"merge":true},{"command":"add_css","data":[{"rel":"stylesheet","media":"all","href":"\/modules\/contrib\/addtocal\/addtocal.css?t2408i"},{"rel":"stylesheet","media":"all","href":"\/themes\/custom\/cest2025\/css\/components\/node.css?t2408i"}]},{"command":"add_js","selector":"body","data":[{"src":"\/core\/assets\/vendor\/jquery\/jquery.min.js?v=3.7.1"},{"src":"\/core\/assets\/vendor\/once\/once.min.js?v=1.0.1"},{"src":"\/core\/misc\/drupalSettingsLoader.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.init.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal-download.js?v=10.5.1"}]},{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\n\u003Carticle class=\u0022node node--type-presentation node--promoted node--view-mode-modal\u0022\u003E\n      \u003Cdiv\u003ESession 12 - Wastewater treatment (3)\u003C\/div\u003E\n  \n      \u003Cb\u003E\u003Cspan\u003EKinetics and Isotherm Studies of Methyl Orange Adsorption using Metal Organic Framework-based Composite Beads Functionalized with Polyethyleneimine\u003C\/span\u003E\n\u003C\/b\u003E\n  \n      \u003Cdiv\u003E\u003Cb\u003ECEST ID: cest2025_00010\u003C\/b\u003E\u003C\/div\u003E\n  \n        \u003Cdiv class=\u0022mb-3\u0022\u003E\n      \u003Cb\u003ERoom Aegle B | Thu 4 Sep 2025 | 16:55 - 17:05 pm\u003C\/b\u003E\n    \u003C\/div\u003E\n  \n          \n    \n  \n      \u003Cdiv class=\u0022mt-10\u0022\u003E\n            \u003Cdiv class=\u0022clearfix text-formatted field field--name-presentation-body field--type-text-long field--label-hidden field__item\u0022\u003ETo further improve the adsorption performance of our synthesized metal organic framework (MOF)-based composite beads, components with favorable functional groups are introduced. In this study, polyethyleneimine (PEI), a suitable polymer with plenty of amine functional groups in its structure, was incorporated to increase the number of active sites for methyl orange (MO) adsorption.  The effects of operating parameters such as pH and initial MO concentration on the MO adsorption performance of our previously optimized beads composed of chitosan (CS), MIL-101 (Fe), and PEI were investigated. In addition, kinetic and isotherm modelling using adsorption equilibrium data were performed using non-linear regression. High MO removal of at least 93% was achieved across a wide range of pH, while kinetic data followed a pseudo-second order equation with a coefficient of determination (R-squared) of 0.981, suggesting that chemisorption limits the rate of the reaction. Furthermore, isotherm studies revealed that the adsorption equilibrium data were best described by the Sips isotherm model (R-squared = 0.993), suggesting MO adsorption on the heterogeneous surface of the beads. With a maximum adsorption capacity of 1253.44 mg\/g, results showed superior performance of the beads in removing MO from water. Finally, regeneration studies proved that the beads have a high regenerative ability, being able to maintain MO removal of over 98% throughout five cycles of adsorption and desorption.\u003C\/div\u003E\n      \u003C\/div\u003E\n  \n  \u003Cdiv class=\u0022mt-5 mb-5\u0022\u003E\n          \u003Cspan\u003E\n          \u003Cb\u003EPresenter:\u003C\/b\u003E\n                      \u003Cp\u003E\n            Dr Jem Valerie Perez\n            \u003C\/p\u003E\n                  \u003C\/span\u003E\n      \u003C\/div\u003E\n\n  \u003Cdiv class=\u0022mb-5\u0022\u003E\n          \u003Cdiv class=\u0022field__label\u0022\u003E\n        Authors\n      \u003C\/div\u003E\n              \u003Cp\u003E\n          Nathaniel Saporsantos\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Isaac Dela Cruz\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Jem Valerie Perez\n        \u003C\/p\u003E\n            \u003C\/div\u003E\n\n\u003C\/article\u003E\n","dialogOptions":{"width":"700","position":{"my":"right top","at":"right top"},"closeOnEscape":true,"dialogClass":"presentation-dialog","modal":true,"title":"","classes":{"ui-dialog":"presentation-dialog"}}}]