NDLI: Adsorption of anionic azo dye from aqueous solution using Strychnos potatorum Linn seeds: isotherm and kinetic studies

Content Provider	Springer Nature Link
Author	Kirupa Sankar, M. Ranganathan, B. V. Muthu Kumar, K.
Copyright Year	2014
Abstract	Dyes from several industry effluents are major concern of environmental pollution. In this study, the efficiency of a cost-effective natural adsorbent Strychnos potatorum Linn (Fam: Loganiaceae) seeds on removing reactive orange-M2R dye from aqueous solution was investigated using batch adsorption isotherms at 30 ± 1 °C and 120 rpm. The efficacy of the adsorbent system was also studied at various parameters viz. contact time, pH, adsorbent dosage and initial dye concentration. Maximum adsorption (q $_{e}$ = 9 mg/g) was observed at pH 2.0, equilibrium time 6 h, initial dye concentration of 100 mg/L and adsorbent dosage of 0.2 g/100 mL. The unit adsorption of dye, q $_{e}$ (mg/g) increased with increase in contact time and initial dye concentration, while it decreased with increase in adsorbent dosage. The adsorption kinetic studies revealed that it follows pseudo-second-order reaction model. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms with good agreement. These investigations suggest that Strychnos potatorum Linn seeds (SPS) could be used as a low-cost adsorbent in treating textile effluents for dye removal applications. The adsorbent (SPS) was also characterized using Fourier transform infrared spectroscopy, powder X-ray diffraction, and scanning electron microscopic technique.
Starting Page	2957
Ending Page	2964
Page Count	8
File Format	PDF
ISSN	17351472
Journal	International Journal of Environmental Science & Technology
Volume Number	12
Issue Number	9
e-ISSN	17352630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-08-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reactive orange-M2R Strychnos potatorum Linn seeds Ecotoxicology Water Management Waste Water Technology Dye removal Adsorption Aquatic Pollution Environment Water Pollution Control Environmental Chemistry Environmental Science and Engineering Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Environmental Engineering Agricultural and Biological Sciences

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