Biosorptive Detoxification of Cosmos Red Dye by Raphinus Sativus Leaves and Citrus sinensis Peels from Water in Cost Efective and Ecofriendly Way

Rabia Rehman,Maryam Qaseem,Liviu Mitu

doi:10.37358/rc.20.6.8188

Abstract

The purpose of this study was batch scale elimination of Cosmos Red dye from aqueous medium by low cost and environmentally friendly adsorbents. To study the dye removing capacity, leaves of Raphinus sativus (radish) and peels of Citrus sinensis (orange) were utilized. Two adsorption isotherms were studied to explain adsorption equilibrium. The Langmuir isotherm is compatible to adsorption data. Best adsorption capacities for Raphinus sativus and Citrus sinensis were: 3.437 mg/g and 5.844 mg/g correspondingly. Citrus sinensis peels showed more adsorption. The negative values of thermodynamic parameters ∆Go for both adsorbents have shown the feasibility of this process. The results had shown that for removal of Cosmos Red dye, Citrus sinensis (orange) peels are more efficient adsorbent as compared to Raphinus sativus leaves.

Highlights

Water contaminated from dyes need treatment before its discharge into fresh water reservoirs, because they are usually synthetic ones, which are not biodegradable [1]
The FT-IR spectra of Raphinus sativus leaves and Citrus sinensis peels was taken to find functional groups in them, which can in turn chelate with dye species in aqueous medium
From FT-IR of Raphinus sativus leaves before and after the adsorption of Cosmos Red dye it was indicated that there was a change in wave number 3250-3300 cm-1, 1588-1598 cm-1, 1407-1421 cm-1, 1144-1238 cm-1 and 1011-1009 cm-1 of O-H bond, N-H stretching, C=C bond, C-O

Summary

Introduction

Water contaminated from dyes need treatment before its discharge into fresh water reservoirs, because they are usually synthetic ones, which are not biodegradable [1]. Water is considered as polluted when anything by anthropogenic sources contaminates it. Waste water treatment is a process to convert waste water into usable form [4]. This involves the administration of human waste, solid waste, sewage and storm water controlling [5]. In a waste water treatment plant, the by products are treated [6]. For this purpose adsorption on activated charcoal is carried out mostly for removal of dyes [7, 8].

Objectives

Methods

Results

Conclusion