Removal of Dyes From Wastewater by Adsorption Onto Low-Cost Adsorbents

2020 ◽  
pp. 239-257
Author(s):  
Victor Odhiambo Shikuku ◽  
George Oindo Achieng' ◽  
Chrispin O. Kowenje
Keyword(s):  
Activated Carbons ◽  
Low Cost ◽  
Dye Adsorption ◽  
Environmental Parameters ◽  
Isotherm Models ◽  
Treatment Technique ◽  
Operational Conditions ◽  
Adsorption Isotherm Models ◽  
Inorganic Adsorbents

This chapter describes an up-to-date critique of the use of adsorption as a wastewater treatment technique for the removal of dyes. The topics range from the classification of dyes, their occurrence in water and toxicity, various treatment methods, and dye adsorption dynamics onto agricultural wastes and inorganic adsorbents such as clay and metal oxides and adsorption onto microbial biomass under varying operational conditions. It is demonstrated that the discussed materials form alternative adsorbents for dye adsorption from aqueous solutions with comparable or better removal efficiencies relative to the non-renewable coal-based granular activated carbons; they are cheap and abundant. The relative performance of the adsorbents under different environmental parameters for dye removal has also presented. The deductions made and alluded to from various kinetic and adsorption isotherm models are also discussed. The chapter presents the past, present, and suggestions for future considerations in search of non-conventional adsorbents for dye sequestration from aqueous solution.

Dynamic Study of Adsorption for the Removal of Bismark Brown – Using Activated Carbons

2011 ◽  
Vol 671 ◽  
pp. 187-204
Author(s):  
A. Xavier ◽  
R Sathya ◽  
J. Gandhi Rajan ◽  
R. Nagarathnam
Keyword(s):  
Activated Carbon ◽  
Adsorption Process ◽  
Activated Carbons ◽  
Low Cost ◽  
Kinetic Equations ◽  
Dye Adsorption ◽  
Industrial Wastes ◽  
Isotherm Models ◽  
Before And After ◽  
Intra Particle Diffusion

Many industries use dyes and pigments to colorize their products. Large amount different types of dyes enter in to the environment. These dyes are invariably left in the industrial wastes. As a part of removal of Bismark Brown dye from textile and leather industrial wastes, using activated carbon as adsorbents namely, commercial activated carbon (CAC), rose apple carbon (RAC), coconut shell carbon (CSC) and saw dust carbon (SDC). The percentage removal of Bismark-Brown adsorbed increases with decrease in initial concentration and particle size of adsorbent and increased with increase in contact time, temperature and dose of adsorbent. The pH is highly sensitive for dye adsorption process. The adsorption process followed first order kinetics and the adsorption data with Freundlich and Langmuir isotherm models. The first kinetic equations like Natarajan Khalaf, Lagergren, Bhattacharya and Venkobhachar and intra-particle diffusion were found to be applicable. A comparative account of the adsorption capacity of various carbons has been made. These activated carbons are alternative to commercial AC for the removal dyes in General and Bismark-brown (BB) is particular. These results are reported highly efficient and effective and low cost adsorbent for the BB. The thermodynamics parameters are also studied and it obeys spontaneous process. The results are confirmed by before and after adsorption process with the help of the following instrumental techniques viz., FT-IR, UV-Visible Spectrophotometer and SEM analyze.

scholarly journals Efficiency of Sawdust as Low-Cost Adsorbent for Dyes Removal

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
R. Chikri ◽  
N. Elhadiri ◽  
M. Benchanaa ◽  
Y. El maguana
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Low Cost ◽  
Base Material ◽  
Isotherm Models ◽  
Extensive Literature ◽  
Effective Technique ◽  
Adsorption Isotherm Models ◽  
Harmful Effects ◽  
Dyes Removal

In recent years, the removal of dyes from wastewater has attracted considerable attention due to their harmful effects to ecosystem and human health. Adsorption as a facile and effective technique has been widely used to eliminate a large variety of dyes from aqueous solutions. Activated carbon is the most preferred adsorbent to treat wastewater but its use is limited because of high cost. Therefore, several low-cost and natural materials and wastes have been used as precursors for the preparation of alternative adsorbents. Among them, sawdust as an abundant and low-cost by-product has been explored as adsorbent for the removal of dyes from wastewater. This review focuses on the various sawdust used as a precursor for the preparation of activated carbons. Extensive literature information about sawdust, its compositions, activation methods, its efficiency for dyes removal, and environmental conditions effects has been reviewed. The applicability of various adsorption kinetic models and adsorption isotherm models for dye removal by sawdust-derived activated carbons has been also reported. Finally, this paper highlights the use of sawdust as base material for various composites and mixture which can be used as granular activated carbon.

Removal of Methylene Blue by Adsorption Process - A Comparative Study

2011 ◽  
Vol 699 ◽  
pp. 245-264 ◽  
Author(s):  
A. Xavier ◽  
J. Gandhi Rajan ◽  
D. Usha ◽  
R Sathya
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Adsorption Process ◽  
Activated Carbons ◽  
Low Cost ◽  
Kinetic Equations ◽  
Dye Adsorption ◽  
Industrial Wastes ◽  
Blue Dye ◽  
Molecular Formula

Methylene blue is a heterocyclic aromatic chemical compound with the molecular formula C16H18N3SCl. It has used in the biology and chemistry field. At room temperature, it appears as a solid, odourless dark green powder that yields blue solution when dissolved in water. As a part of removal of methylene blue dye from textile and leather industrial wastes, using activated carbon as adsorbents namely, commercial activated carbon (CAC), rose apple carbon (RAC), coconut shell carbon (CSC) and saw dust carbon (SDC). The percentage of Methylene blue adsorbed increases with decrease in initial concentration and particle size of adsorbent and increased with increase in contact time, temperature and dose of adsorbents. The pH is highly sensitive for dye adsorption process. The adsorption process followed first order kinetics and the adsorption data the modeled with Freundlich and Langmuir isotherms. The first kinetic equations like Natarajan Khalaf, Lagergren, Bhattacharya and Venkobhachar and intra particle diffusion were found to be applicable. A comparative account of the adsorption capacity of various carbons has been made. These activated carbons are alternative to commercial AC for the removal dyes in General and MB is particular. These results are reported highly efficient and effective and low cost adsorbent for the MB. The thermodynamics parameters are also studied and it obeys spontaneous process. The results are confirmed by before and after adsorption process with the help of the following instrumental techniques viz., FT-IR, UV-Visible Spectrophotometer and SEM photos.

scholarly journals Simultaneous Adsorption of Cr(VI) and Phenol from Binary Mixture Using Iron Incorporated Rice Husk: Insight to Multicomponent Equilibrium Isotherm

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Ankur Gupta ◽  
Chandrajit Balomajumder
Keyword(s):  
Experimental Data ◽  
Rice Husk ◽  
Low Cost ◽  
Binary Solution ◽  
Multicomponent System ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Order Model ◽  
Adsorption Isotherm Models ◽  
Pseudo Second Order

Fe modified rice husk was prepared as a low cost biosorbent for the removal of Cr(VI) and phenol both singly and in combination from single and binary simulated synthetic waste water. Rice husk was modified by treating with FeSO4·7H2O. The results showed that impregnation of iron onto the surface of rice husk improved the adsorption capability of both Cr(VI) and phenol. The effects of process parameters for multicomponent system such as pH, adsorbent dose, and contact time onto the percentage removal of both Cr(VI) and phenol were investigated. The experimental data for the adsorption of both Cr(VI) and phenol onto the surface of Fe modified rice husk applied to various kinetic and adsorption isotherm models. Multicomponent isotherm models such as Nonmodified Langmuir, Modified Langmuir, Extended Langmuir, Extended Freundlich, Competitive Nonmodified Redlich Peterson, Competitive Modified Redlich Peterson were applied. The results show that Extended Freundlich model best described the experimental data for both Cr(VI) and phenol from binary solution. Pseudo second-order model agreed well with Cr(VI) while pseudo first-order model agreed well with phenol. Maximum adsorption capacity in synthetic binary solution of Cr(VI) and phenol was found to be 36.3817 mg g−1for Cr(VI) and 6.569 mg g−1for phenol, respectively.

scholarly journals Reactive Blue 203 dye Removal Using Biosorbent: A Study of Isotherms, Kinetics, and Thermodynamics

2018 ◽  
Vol 5 (2) ◽  
pp. 91-99
Author(s):  
Marzieh Bagheri ◽  
Mohammad Nasiri ◽  
Bahareh Bahrami
Keyword(s):  
Activated Carbon ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Industrial Wastes ◽  
Isotherm Models ◽  
Characterization Methods ◽  
Pine Cone ◽  
Adsorption Isotherm Models ◽  
Ft Ir ◽  
Maximum Removal

Nowadays, due to increasing usage of dye in various industries and its destructive effects on health and environment, it is necessary to remove dyes from industrial wastes. Although few studies can be found on using pine cone for removal of different dyes, it has not been used yet to remove Reactive Blue 203 (RB203) dye. The purpose of this study is to investigate RB203 dye adsorption using activated carbon produced from pine cone. Optimal values of influencing factors for RB203 dye removal were obtained. The results showed that the maximum removal was occurred at a pH of 2, temperature of 30˚C, dye concentration of 30 mg/L, adsorbent dosage of 100 mg/L, and contact time of 15 min. The maximum removal percentage was 98.48%. In order to study the synthesized activated carbon, some characterization methods including scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) have been used. Investigation of adsorption isotherm models revealed that adsorption of RB203dye can be described through D-R and Temkin isotherm models. Additionally, RB203 dye removal follows the pseudo-firstorder kinetic equation.

scholarly journals Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

2016 ◽  
Vol 18 (2) ◽  
pp. 402-415 ◽  
Keyword(s):  
Activated Carbon ◽  
Sugarcane Bagasse ◽  
Contact Time ◽  
Dye Adsorption ◽  
Isotherm Models ◽  
Adsorptive Capacity ◽  
Adsorption Isotherm Models ◽  
Equilibrium Data ◽  
Agriculture Wastes ◽  
Physical Preparation

<div> <p>Agriculture wastes like sugarcane bagasse are available in large quantities in Egypt. Various adsorbents from natural materials, industrial waste materials, agricultural by-products, and biomass based activated carbon can be used in the removal of various dyes. Raw Bagasse pith (RBP) was used to prepare activated carbon (AC) using phosphoric acid (H<sub>3</sub>PO<sub>4</sub>) as a chemical activating agent. C The raw BP and the synthesized adsorbent were characterized by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM). The effectiveness of AC prepared in adsorption of methylene blue (MB) has been studied as a function of adsorbent type, initial dye concentration and contact time. The effects of the initial dye concentration and contact time were evaluated. Adsorption isotherm models - Langmuir, Freundlich and Temkin were used to simulate the equilibrium data. Langmuir equation was found to have the highest value of R<sup>2</sup> compared with other models. Furthermore, it was found that sugarcane bagasse have a high adsorptive capacity towards MB.</p> </div> <p>&nbsp;</p>

Adsorption of Aqueous Using Granular Adsorbents from Accanthospermum hispendum DC

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Sunusi A. Zubair ◽  
◽  
Umar Ibrahim Gaya ◽  
Keyword(s):  
Activated Carbons ◽  
Low Cost ◽  
Kinetic Scheme ◽  
Freundlich Isotherm ◽  
Sub Saharan Africa ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Lead Uptake ◽  
Effects Of Ph ◽  
Sub Saharan

Granular activated carbons have been important adsorbents for the decontamination of aqueous environmental contaminants. Acanthospermum hispidum weed represents a ready available source of low-cost adsorbents in sub-Saharan Africa that has barely been paid attention. The effects of pH, contact time, concentration, adsorbent dosage, particle size and temperature on the adsorptive removal of Pb (II) from aqueous solutions over activated carbon granules from the thorns of Accanthospermum hispindum (AC-T) were for the first time investigated and compared with those of the leaves (L), the sodium hydroxide modified thorns (NaOH-T) and regular thorns (T) of this plant. These adsorbents were characterised by the surface charge analysis, scanning electron microscopy (SEM) and the Attenuated Total Reflectance Fourier Transform infrared (ATR FTIR) spectroscopy. The SEM revealed a wafer-like appearance for the AC-T with a large distribution of open pores. The adsorption data of lead uptake onto the adsorbents were examined using two pseudo-order kinetic schemes and three isotherm models. To fully understand the adsorption capacities of the adsorbents, batch desorption recoveries were studied. The FTIR depicted the various functionalities responsible for the adsorption. Adsorption over AC-T was found to agree with pseudo second-order kinetic scheme, the Langmuir and Freundlich isotherm. This material exhibited the highest adsorption capacity. The order of reusability of the adsorbents is T < AC-T < NaOH-T.

scholarly journals Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1764 ◽  
Author(s):  
Amir Muhammad ◽  
Anwar-ul-Haq Ali Shah ◽  
Salma Bilal ◽  
Gul Rahman
Keyword(s):  
Aqueous Solution ◽  
Dye Adsorption ◽  
Isotherm Models ◽  
Blue Dye ◽  
Adsorption Parameters ◽  
Magnetic Oxide ◽  
Magnetite Fe3o4 ◽  
Adsorption Isotherm Models ◽  
Pseudo Second Order ◽  
Enhanced Adsorption

Owing to its exciting physicochemical properties and doping–dedoping chemistry, polyaniline (PANI) has emerged as a potential adsorbent for removal of dyes and heavy metals from aqueous solution. Herein, we report on the synthesis of PANI composites with magnetic oxide (Fe3O4) for efficient removal of Basic Blue 3 (BB3) dye from aqueous solution. PANI, Fe3O4, and their composites were characterized with several techniques and subsequently applied for adsorption of BB3. Effect of contact time, initial concentration of dye, pH, and ionic strength on adsorption behavior were systematically investigated. The data obtained were fitted into Langmuir, Frundlich, Dubbanin-Rudiskavich (D-R), and Tempkin adsorption isotherm models for evaluation of adsorption parameters. Langmuir isotherm fits closely to the adsorption data with R2 values of 0.9788, 0.9849, and 0.9985 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The maximum amount of dye adsorbed was 7.474, 47.977, and 78.13 mg/g for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The enhanced adsorption capability of the composites is attributed to increase in surface area and pore volume of the hybrid materials. The adsorption followed pseudo second order kinetics with R2 values of 0.873, 0.979, and 0.999 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The activation energy, enthalpy, Gibbs free energy changes, and entropy changes were found to be 11.14, −32.84, −04.05, and −0.095 kJ/mol for Fe3O4, 11.97, −62.93, −07.78, and −0.18 kJ/mol for PANI and 09.94, −74.26, −10.63, and −0.210 kJ/mol for PANI/Fe3O4 respectively, which indicate the spontaneous and exothermic nature of the adsorption process.

scholarly journals Design and Evaluation of a New Natural Multi-Layered Biopolymeric Adsorbent System-Based Chitosan/Cellulosic Nonwoven Material for the Biosorption of Industrial Textile Effluents

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 322
Author(s):  
Yassine EL-Ghoul ◽  
Chiraz Ammar ◽  
Fahad M. Alminderej ◽  
Md. Shafiquzzaman
Keyword(s):  
Low Cost ◽  
Nonwoven Material ◽  
Isotherm Models ◽  
Good Efficiency ◽  
Modified Chitosan ◽  
Reactive Red 198 ◽  
Adsorption Isotherm Models ◽  
Dta Analysis ◽  
Pseudo Second Order ◽  
Temperature Time

The adsorption phenomenon using low-cost adsorbents that are abundant in nature is of great interest when the adsorbed capacity is significant. A newly designed natural polyelectrolyte multi-layered (PEM) biopolymeric system-based chitosan/modified chitosan polymer and functionalized cellulosic nonwoven material was prepared and used as an effective adsorbent for Reactive Red 198 (RR198) dye solutions. The bio-sorbent was characterized by FTIR, SEM, and thermal (TGA/DTA) analysis. The swelling behavior was also evaluated, showing the great increase of the hydrophilicity of the prepared adsorbent biopolymer. The effect of various process parameters on the performance of RR198 dye removal such as pH, contact time, temperature, and initial dye concentration was studied. The biopolymeric system has shown good efficiency of adsorption compared to other adsorbents based on chitosan polymer. The highest adsorption capacity was found to be 722.3 mgg−1 at pH = 4 (ambient temperature, time = 120 min and dye concentration = 600 mg L−1). The adsorption process fitted well to both pseudo-second-order kinetics and Freundlich/Temkin adsorption isotherm models. Regarding its low cost, easy preparation, and promising efficient adsorption results, this new concepted multi-layered bio-sorbent could be an effective solution for the treatment of industrial wastewater.

scholarly journals REACTIVE AZO DYE ADSORPTION USING ZEOLITIC MATERIAL: CONTACT TIME, pH, TEMPERATURE AND EFFECT OF SALTS

2012 ◽  
Vol 09 (17) ◽  
pp. 48-59
Author(s):  
Carina Pitwak MAGDALENA ◽  
Denise Alves FUNGARO ◽  
Patricia CUNICO
Keyword(s):  
Contact Time ◽  
Low Cost ◽  
Dye Adsorption ◽  
Correlation Coefficients ◽  
Coal Ash ◽  
Freundlich Isotherm ◽  
Reactive Dye ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Synthetic Dyes

Textile effluents, when not correctly treated, cause a high impact to the environment. The synthetic dyes are used in the fibber dying process, but part of them is discarded to receiving water body. The adsorption is a technique that has been used successfully for an effective removal of color. In this work, the adsorption of reactive dye Remazol Red RB from aqueous solution using zeolite of coal ash as low cost adsorbent was studied. The zeolite was synthesized by hydrothermal treatment with NaOH solution. The effect of experimental parameters such as contact time, pH, temperature and adding salt was investigated. The kinetics studies indicated that the adsorption followed the pseudo-second-order model with correlation coefficients > 0.99. The equilibrium was reached after 360 min of contact time. The experimental data were analyzed using Langmuir and Freundlich isotherm models and the data fitted well to the Langmuir isotherm. The maximum adsorption capacity of zeolite of coal ash for Remazol Vermelho RB was 1.20 mg g-1 with adsorption efficiency between 75 and 91%. The dye adsorption was more efficient in the presence of salts.

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