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Biosorption of Basic Green 4 from aqueous solution by Ananas comosus (pineapple) leaf powder.
Shamik Chowdhury1, Sagnik Chakraborty, Papita Saha
1Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, Durgapur (WB)-713209, India. chowdhuryshamik@gmail.com
Colloids and Surfaces. B, Biointerfaces
|February 26, 2011
Summary
Pineapple leaf powder effectively removes Basic Green 4 dye from water. This low-cost biosorbent shows efficient decolorization, making it a sustainable option for wastewater treatment.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Wastewater contamination by cationic dyes poses environmental risks.
- Developing cost-effective and sustainable adsorbents is crucial for dye removal.
Purpose of the Study:
- To investigate the biosorption potential of Ananas comosus (pineapple) leaf powder for decolorizing Basic Green 4 (BG 4) dye.
- To optimize biosorption conditions and characterize the adsorbent material.
Main Methods:
- Batch biosorption experiments were conducted to study the influence of pH, biosorbent dosage, contact time, initial dye concentration, and temperature.
- Biosorbent characterization included FTIR, SEM, and BET surface area analysis.
- Biosorption data were modeled using Langmuir, Freundlich, and D-R isotherms, and kinetic studies were performed.
Main Results:
- Optimal conditions for BG 4 removal were pH 9.0, 150 min contact time, 5.0 g L(-1) biosorbent dosage, and 50 mg L(-1) initial dye concentration.
- The biosorption process followed the Langmuir isotherm model and pseudo-second-order kinetics.
- Calculated activation energy (45.79 kJ mol(-1)) indicated chemisorption, and thermodynamic parameters suggested a spontaneous, exothermic process.
Conclusions:
- Ananas comosus leaf powder is an efficient, low-cost, and environmentally friendly biosorbent for BG 4 dye removal.
- The study demonstrates the feasibility of using agricultural waste for wastewater treatment.
- Pineapple leaf powder offers a sustainable solution for decolorizing cationic dyes from aqueous solutions.
