Amorphous adsorbent from geothermal solid waste for methylene blue removal
- 1 January 2023
- journal article
- research article
- Published by Thomas Telford Ltd. in Journal of Environmental Engineering and Science
- Vol. 18 (1), 1-9
- https://doi.org/10.1680/jenes.21.00082
Abstract
Organic compounds like dyes and heavy metal ions are common pollutants in wastewater that have become a global problem. Adsorption has proven to be a successful technique in removing organic species such as methylene blue. Geothermal solid waste has the potential to be used as an adsorbent due to its silica content. Silica compound in the geothermal waste is the potential to be developed as porous material. Aluminum hydroxide and geothermal solid waste were added to the aqueous alkali (NaOH) in the continuous stirred tank reactor, then resulted an amorphous mesoporous material of the natrolite phase. The performance of the geoadsorbent was evaluated through the removal of various concentrations of methylene blue, and isotherm adsorption models evaluated the data. The adsorption mechanisms of the MB removal by geoadsorbent shown by FT-IR spectra are electrostatic attraction and hydrogen-bond formations. The geoadsorbent can remove methylene blue up to 84.449%, which the initial concentration of MB is highly dependent on adsorption. The Langmuir isotherm model provides the most accurate representation of methylene blue adsorption as a result of the physical process. with a correlation coefficient of 0.971.Keywords
This publication has 43 references indexed in Scilit:
- Removal of methylene blue by adsorption onto activated carbon developed from Ficus carica bastArabian Journal of Chemistry, 2017
- Adsorption of Methylene Blue by ultrasonic surface modified chitinJournal of Colloid and Interface Science, 2015
- Modified nanocrystalline natural zeolite for adsorption of arsenate from wastewater: Isotherm and kinetic studiesMicroporous and Mesoporous Materials, 2014
- Adsorption, chemisorption, and catalysisChemical Papers, 2014
- Zeolites and Other Structurally Microporous Solids as Acid–Base MaterialsPublished by Elsevier BV ,2014
- Adsorption characteristics for the removal of a toxic dye, tartrazine from aqueous solutions by a low cost agricultural by-productArabian Journal of Chemistry, 2013
- Removal of Methylene Blue from Wastewater by Adsorption onto ZnCl2Activated Corn Husk Carbon Equilibrium StudiesJournal of Chemistry, 2013
- Synthesis of NaP zeolite at room temperature and short crystallization time by sonochemical methodUltrasonics Sonochemistry, 2013
- Thermal Expansion of the Superhydrated Small-Pore Zeolite NatroliteThe Journal of Physical Chemistry C, 2012
- Introduction: Green Chemistry and CatalysisPublished by Wiley ,2007