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Quaternized wood as sorbent for reactive dyes.
1Chemistry Department, Faculty of Science and Environmental Studies, Universiti Putra Malaysia, Selangor. kslow@fsas.upm.edu.my
Applied Biochemistry and Biotechnology
|September 12, 2000
Summary
Modified wood effectively sorbs hydrolyzed Reactive Blue 2 (HRB) dye, enhancing removal from industrial textile effluent. This quaternized wood shows high sorption capacity and successful color removal under batch conditions.
Area of Science:
- Materials Science
- Environmental Chemistry
- Water Treatment
Background:
- Textile industry effluent often contains persistent dyes like hydrolyzed Reactive Blue 2 (HRB).
- Conventional wastewater treatment methods may struggle with efficient removal of such recalcitrant dyes.
- Developing cost-effective and efficient sorbent materials is crucial for environmental remediation.
Purpose of the Study:
- To investigate the efficacy of locally sourced wood modified with N-(3-chloro-2-hydroxypropyl)-trimethylammonium chloride as a sorbent for hydrolyzed Reactive Blue 2 (HRB).
- To evaluate the sorption characteristics, including capacity and thermodynamic properties, of the modified wood.
- To assess the performance of the modified wood in removing color from industrial textile effluent.
Main Methods:
- Modification of various local wood species using N-(3-chloro-2-hydroxypropyl)-trimethylammonium chloride.
- Sorption experiments using hydrolyzed Reactive Blue 2 (HRB) under batch and continuous flow conditions.
- Analysis of sorption data using Langmuir isotherm and thermodynamic parameters.
- Application of the modified wood to treat a real industrial textile effluent sample.
Main Results:
- Wood modified with N-(3-chloro-2-hydroxypropyl)-trimethylammonium chloride exhibited enhanced sorption capacity for HRB compared to untreated wood.
- The enthalpy of sorption for HRB on Simpoh (Dillenia suffruticosa) wood was endothermic.
- Maximum sorption capacity reached 250.0 mg/g, as determined by the Langmuir isotherm.
- Successful HRB removal was achieved under both continuous flow and batch conditions, with dye removal influenced by bed depth and flow rate.
- The Bohart and Adams bed depth service time model was not applicable to this modified wood system.
- The modified wood effectively removed color from an industrial textile effluent sample in batch tests.
Conclusions:
- Quaternized local wood species are effective sorbents for hydrolyzed Reactive Blue 2 (HRB).
- The modified wood demonstrates significant potential for decolorization of industrial textile wastewater.
- Further investigation into continuous flow system modeling may be warranted for optimization.