Alkaline treatment of timber sawdust: A straightforward route toward effective low-cost adsorbent for the enhanced removal of basic dyes from aqueous solutions

Djilali, Yamina; Elandaloussi, El Hadj; Aziz, A.; Ménorval, Louis-Charles de

doi:10.1016/j.jscs.2012.10.013

Cited by 49 publications

(18 citation statements)

References 38 publications

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“…Weakly bonded molecules are likely to detach from the surface of the adsorbent at high temperature. 46,47,48 3.2.5. Adsorption Isotherms Figure 9 shows the plots of the Langmuir, Freundlich, Temkin and D-R isotherms for the uptake of RhB onto DN and ADN and Table 3 lists the various isotherm parameters as calculated from the slopes and intercepts of the plots.…”

Section: Effect Of Temperature On the Uptake Of Rhb Onto Dn And Adnmentioning

confidence: 99%

Adsorption of Rhodamine B dye from aqueous solution on Irvingia gabonensis biomass: Kinetics and thermodynamics studies

Inyinbor¹,

Adekola²,

Olatunji³

2015

S.Afr.j.chem

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Section: Effect Of Temperature On the Uptake Of Rhb Onto Dn And Adnmentioning

confidence: 99%

Adsorption of Rhodamine B dye from aqueous solution on Irvingia gabonensis biomass: Kinetics and thermodynamics studies

Inyinbor¹,

Adekola²,

Olatunji³

2015

S.Afr.j.chem

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“…Each reuse cycle was followed up by checking for weight loss of the sorbent: this was below 1% for careful filtration and careful transfers between laboratory glassware containers used. Such favourable findings are better than those relating to the couples: sawdust/MB [34] and macroalga/MB [35], each study mentions ~32% decline in capacity for a second use of the sorbent.…”

Section: Reuse Of Sorbent and Sorption Performancesmentioning

confidence: 84%

Effects of Some Operating Parameters on Sorption and Desorption Kinetics Related to Spotted Golden Thistle Stalks and Methylene Blue; Isotherm Study at Optimal pH and Sorbent Regeneration

Bereksi

Benaïssa

2018

Progress in Reaction Kinetics and Mechanism

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In this work, the sorptive removal assessment of methylene blue by spotted golden thistle stalks was enhanced. Sorption was positively impacted by increasing temperature, initial pH or ionic strength. The sorbent isoelectrical point is 2.6 according to zeta potential measurements. The Elovich and Avrami models best fitted the sorption kinetic data; and an original prediction of equilibrium time is proposed. At 25 °C and for optimal initial pH = 7, the experimental maximal sorption capacity is 75 mg g−1. The Langmuir, Redlich–Peterson, Sips and Tóth models led to good correlations of isothermal data. Desorption percentages are important in both mineral and organic acidic media; the highest levels up to 91% were recorded for 1 × 10−2 M HCl solutions. The pseudo second-order model fitted satisfactorily the desorption kinetics. An innovative concept of regeneration is proposed, which promises significant savings of eluent and operating time. The sorbent regeneration assessment showed constant uptake abilities after five cycles of use.

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“…Using adsorbent has great adsorption capability and needs little processing. 19-22 Diverse natural materials such as timber sawdust, 23 pine cone, 24 chitosan, 25 and natural clay 8 have a fair adsorption efficiency of dyes from aqueous solutions, but they are incompetent in dealing with such hard complex real textile wastewaters. For raw textile wastewaters, activated carbon (AC) is one of the extensively used adsorbents rather than other materials for COD and color reduction, thanks to its great surface area and marvelous adsorption capability.…”

Section: Introduction and Backgroundsmentioning

confidence: 99%

Comparative Studies of Using Nano Zerovalent Iron, Activated Carbon, and Green Synthesized Nano Zerovalent Iron for Textile Wastewater Color Removal Using Artificial Intelligence, Regression Analysis, Adsorption Isotherm, and Kinetic Studies

Karam

Zaher

Mahmoud

2020

Air, Soil and Water Research

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Daily, a big extent of colored, partially treated textile effluents drained into the sanitation systems causing serious environmental concerns. Therefore, the decolorization treatment process of wastewater is crucial to improve effluent quality. In the present study, 3 different sorbent materials, nano zerovalent iron (nZVI), activated carbon (AC), and green-synthesized nano zerovalent iron (GT-nZVI), have been prepared for raw textile wastewater decolourization. The prepared nanomaterials were characterized via X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, and UV-Vis absorption spectroscopy. In addition, the effect of different operating parameters such as pH, contact time, and stirring rate on the color removal efficiency was extensively studied to identify the optimum removal conditions. The reaction temperature, adsorbent dose, and initial color concentration were fixed during the experiments at room temperature, 0.7 g/L, and 350 and 50 mg/L Pt/Co color unit, respectively. Moreover, adsorption and reaction kinetics were analyzed using different isotherms and models. For simulating the adsorption process, artificial neural network (ANN) data were compatible with the result of regression analysis derived from response surface methodology (RSM) optimization. Our results showed the higher ability of nZVI, AC, and GT-nZVI in textile wastewater color removal. At pH 5, contact time 50 minutes, and stirring rate 150 rpm, nZVI showed good color removal efficiency of about 71% and 99% for initial color concentrations of 350 and 50 mg/L Pt/Co color unit, respectively. While slightly higher color removal ability of about 72% and 100% was achieved by using AC at pH 8, contact time 70 minutes, and stirring rate 250 rpm. Finally, the largest ability of color removal about 85% and 100% was recorded for GT-nZVI at pH 7, contact time 40 minutes, and stirring rate 150 rpm. This work shows the enhanced color removal ability of GT-nZVI as a potential textile wastewater decolourization material, opening the way for many industrial and environmental applications.

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Alkaline treatment of timber sawdust: A straightforward route toward effective low-cost adsorbent for the enhanced removal of basic dyes from aqueous solutions

Cited by 49 publications

References 38 publications

Adsorption of Rhodamine B dye from aqueous solution on Irvingia gabonensis biomass: Kinetics and thermodynamics studies

Adsorption of Rhodamine B dye from aqueous solution on Irvingia gabonensis biomass: Kinetics and thermodynamics studies

Effects of Some Operating Parameters on Sorption and Desorption Kinetics Related to Spotted Golden Thistle Stalks and Methylene Blue; Isotherm Study at Optimal pH and Sorbent Regeneration

Comparative Studies of Using Nano Zerovalent Iron, Activated Carbon, and Green Synthesized Nano Zerovalent Iron for Textile Wastewater Color Removal Using Artificial Intelligence, Regression Analysis, Adsorption Isotherm, and Kinetic Studies

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