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Scavenging methyl orange dye from aqueous solution using an effective low-cost activated carbon prepared from delonix Regia seeds

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Title Scavenging methyl orange dye from aqueous solution using an effective low-cost activated carbon prepared from delonix Regia seeds
 
Creator Ushanandhini, G
Anbarasan, V
Kalicharan, A Alvin
Arivalagan, K
 
Subject Activated carbon
Gulmohar (Delonix Regia)
Isotherms
Methyl Orange
 
Description 631-636
An increasing textile industry has exacerbated the serious problem of dealing with industrial effluent that contains toxic
dye molecules. Despite the development of various techniques for adsorbing dyes in wastewater, many researchers have yet
to expand a highly efficient technique for the revival of dye molecules from textile waste water. However, adsorption
techniques using low cost, eco-friendly, effective adsorbents are extensively used due to their simplicity and good
efficiency. A novel approach for the capture of dye molecules using a composite inexpensive activated carbon (AC)
adsorbent synthesized from Gulmohar (GM) plant seeds has been proposed in this study. Prepared AC before and after
adsorption of Methyl Orange (MO) has been characterized by SEM, EDX and FT-IR. Experimental adsorption data of
chosen anionic dyes fits several kinetic and isotherm models. Kinetic studies reveal that a pseudo-second order is the mainly
suitable model in the adsorption process. The equilibrium adsorption data of anionic dye show that the system followed the
Langmuir adsorption isotherm. In addition, through thermodynamic calculations the negative value of ΔG° and negative
value of ΔH° show that the adsorption is a spontaneous and exothermic process. All the above results conclude that the
GMAC can be used as an effective absorbent for removing dyes from wastewater.
 
Date 2021-12-24T05:03:33Z
2021-12-24T05:03:33Z
2021-09
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/58680
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.28(5) [September 2021]