Adsorptive Removal of Rhodamine B with Activated Carbon Obtained from Okra Wastes

Üner, Osman; Geçgel, Ünal; Kolancılar, Hakan; Bayrak, Yüksel

doi:10.1080/00986445.2017.1319361

Cited by 61 publications

(12 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore ACs from agricultural origins has been utilized as potential adsorbent for remediating various kinds of dyes. Many authors in past decades have studied the adsorption of various dyes onto numerous agricultural materials which include rice husk [51,52] , neem [53,54] , rambutan seed [55] , durian seed [56,57] , watermelon rinds [58] , lime peel [59] , Okra [60] , banana stalk [61] mango [62] , walnut shells [63,64] , cocoa husk [44] , orange peel [65][66][67] , Prunus dulcis [68,69] , berry leaves [70] , de-oiled soya [71] bagasse fly ash [72] and Moringa oleifera leaf and pod [73,74] .…”

Section: Rationalementioning

confidence: 99%

Sorption studies of methyl red dye removal using lemon grass (Cymbopogon citratus)

Ahmad

Ahmed

Adegoke

et al. 2019

Chemical Data Collections

View full text Add to dashboard Cite

Lemongrass leaf based activated carbon (LGLAC) was prepared using physico-chemical methods for methyl red (MR) dye removal from aqueous solutions. The surface chemistry of LGLAC before adsorption revealed the presence of different functional groups: O-H, C-H, C = O, CH 3 , C = C, NO , CO and C-N which were shifted after methyl red dye adsorption. Brunauer-Emmett-Teller surface and mesopore areas are 836.04 m 2 /g and 598.6 04 m 2 /g, whereas, the average pore diameter and total pore volume of LGLAC are 3.62 nm and 0.472 cm 3 /g respectively. Batch adsorption was studied using different parameters: initial dye concentrations (25-500 mg/L), contact time (0-24 h), solution temperature (30-60 °C) and solution pH (2-12). Adsorption of methyl red dye was observed to increase with increase in initial dye concentration, contact time and solution temperature. The methyl red dye adsorption uptake and percentage removal at equilibrium showed that the adsorption process is majorly dependent on the initial dye concentration. Optimum percentage of methyl red dye removed was observed at pH 2. The adsorption process of methyl red dye onto LGLAC was endothermic in nature. Thermodynamic parameters, including entropy change (S 0), enthalpy change (H 0), and Gibbs free energy change (G 0) were evaluated. The adsorption process was endothermic and the mechanism followed a physisorption process.

show abstract

Section: Rationalementioning

confidence: 99%

Sorption studies of methyl red dye removal using lemon grass (Cymbopogon citratus)

Ahmad

Ahmed

Adegoke

et al. 2019

Chemical Data Collections

View full text Add to dashboard Cite

show abstract

“…However, in view of the low cost, regeneration potential and high adsorption capacity, agricultural wastes have been employed [3,24,25,26]. Various researchers have exploited adsorbents such as ackee apple (Blighia sapida) seeds [15], oil palm fruit [7,17,27], Imperata cylindrical [28], durian seed [29,30] watermelon rinds [31], lime peel [32], Okra [33], fly ash [34,35,36], banana stalk [37,38], etc for this purpose. A capable approach is increasing the adsorbents' porosity sites for enhancement of interactions between adsorbents and dyes.…”

Section: Introductionmentioning

confidence: 99%

Rhodamine B dye sequestration using Gmelina aborea leaf powder

Bello

Alabi

Adegoke

et al. 2020

Heliyon

View full text Add to dashboard Cite

Chemically prepared activated carbon derived from Gmelina aborea leaves (GALAC) were used as adsorbent for the removal of Rhodamine B (Rh-B) dye from aqueous solutions. The adsorptive characteristics of activated carbon (AC) prepared from Gmelina aborea leaves (GAL) were studied using SEM, FTIR, pH point of zero charge (pH pzc) and Boehm Titration (BT) techniques respectively. The effects of pH, contact time, initial dye concentration and solution temperature were also examined. Experimental data were analyzed using four different isotherm models: Langmuir, Freundlich, Temkin and Dubinin-Radushkevich. Four adsorption kinetic models: Pseudo-first-order (PFO), Pseudo-second-order (PSO), Elovich and Intraparticle diffusion models to establish the kinetics of adsorption process. The RhB dye adsorption on GALAC was best described by Langmuir isotherm model with maximum monolayer coverage of 1000 mg g À1 and R 2 value of 0. 9999. The EDX analysis revealed that GALAC contained 82.81% by weight and 91.2% by atom of carbon contents which are requisites for high adsorption capacity. Adsorption kinetic data best fitted the PSO kinetic model. Thermodynamic parameters obtained for GALAC are (ΔG o ranged from-22.71 to-18.19 kJmol-1 ; ΔH o : 1.51 kJmol-1 ; and ΔS o : 0.39 kJmol-1 K À1 respectively) indicating that the RhB dye removal from aqueous solutions by GALAC was spontaneous and endothermic in nature. The cost analysis established that GALAC is approximately eleven times cheaper than CAC thereby providing a saving of 351.41USD/kg. Chemically treated GAL was found to be an effective absorbent for the removal of RhB dye from aqueous solution.

show abstract

“…where qe (mg/g) and Ce (mg/L) are the quantity of Congo red dye retained at equilibrium and concentration at equilibrium of dye solution, respectively. The degree of sorption Kf and intensity of adsorption 1/n were obtained from the gradient and intercept log qe versus log Ce [14]. Furthermore, if n > 1, this represents a favourable adsorption isotherm [13].The Temkin isotherm model [15] was determined the relationship between adsorbent and adsorbate interaction as shown in eqn.…”

Section: Kinetics and Adsorption Parametermentioning

confidence: 99%

Removal of Congo Red Dye from Aqueous Solution by Using Limonia acidissima Shell as Adsorbent

Yadav¹,

Tiwari²,

Bhagat³

2018

Asian J. Chem.

View full text Add to dashboard Cite

In the era of industrialization, large quantities of various dyes can be used in many industries, like paper and pulp manufacturing, textiles, printing, food products, leather treatment, etc. [1]. The effluent contains various colourful materials from industries, which further mixed with the surface and groundwater system. It causes a problem to human health such as kideny, liver, brain, and central nervous system due to toxic and carcinogenic dyes [2]. Therefore, it is required to eliminate dye contamination. Due to complex aromatic structures, it can't easily degrade [3]. Therefore, it is necessary to design an appropriate treatment method. Recently, various methods have been developed which includes biological treatment, reverse osmosis, coagulation, flocculation, chemical oxidation, photodegradation [4] and adsorption [5] for the wastewater treatment containing colour impurities. Among this adsorption is one of best technique due to its effortlessness operation and lower cost compared to other processes. Recently, great attention has been focused on use

show abstract

Adsorptive Removal of Rhodamine B with Activated Carbon Obtained from Okra Wastes

Cited by 61 publications

References 60 publications

Sorption studies of methyl red dye removal using lemon grass (Cymbopogon citratus)

Sorption studies of methyl red dye removal using lemon grass (Cymbopogon citratus)

Rhodamine B dye sequestration using Gmelina aborea leaf powder

Removal of Congo Red Dye from Aqueous Solution by Using Limonia acidissima Shell as Adsorbent

Contact Info

Product

Resources

About