scholarly journals Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Tadele Assefa Aragaw ◽  
Fekadu Mazengiaw Bogale
Keyword(s):  
Dye Removal ◽  
Low Cost ◽  
Dye Adsorption ◽  
Multilayer Adsorption ◽  
Experimental Conditions ◽  
Biosorption Process ◽  
Electrochemical Technology ◽  
Basic Operating ◽  
Treatment Technologies ◽  
Best Fit

Dyes, especially azo dyes contained in wastewaters released from textile, pigment, and leather industries, are entering into natural waterbodies. This results in environmental deterioration and serious health damages (for example carcinogenicity and mutagenesis) through food chains. Physiochemical, membrane processes, electrochemical technology, advanced oxidation processes, reverse osmosis, ion exchange, electrodialysis, electrolysis, and adsorption techniques are commonly used conventional treatment technologies. However, the limitations of most of these methods include the generation of toxic sludge, high operational and maintenance costs. Thus, technological advancements are in use to remediate dyes from effluents. Adsorption using the nonconventional biomass-based sorbents is the greatest attractive alternatives because of their low cost, sustainability, availability, and eco-friendly. We present and reviewed up-to-date publications on biomass-based sorbents used for dye removal. Conceptualization and synthesizing their state-of-the-art knowledge on their characteristics, experimental conditions used were also discussed. The merits and limitations of various biosorbents were also reflected. The maximum dye adsorption capacities of various biosorbents were reviewed and synthesized in the order of the biomass type (algae, agricultural, fungal, bacterial, activated carbon, yeast, and others). Surface chemistry, pH, initial dye concentration, temperature, contact time, and adsorbent dose as well as the ways of the preparations of materials affect the biosorption process. Based on the average dye adsorption capacity, those sorbents were arranged and prioritized. The best fit of the adsorption isotherms (for example Freundlich and Langmuir models) and basic operating parameters on the removal dyes were retrieved. Which biomass-based adsorbents have greater potential for dye removal based on their uptake nature, cost-effectiveness, bulk availability, and mono to multilayer adsorption behavior was discussed. The basic limitations including the desorption cycles of biomass-based adsorbent preparation and operation for the implementation of this technology were forwarded.

scholarly journals Highly Effective Covalently Crosslinked Composite Alginate Cryogels for Cationic Dye Removal

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 178
Author(s):  
Serap Sezen ◽  
Vijay Kumar Thakur ◽  
Mehmet Murat Ozmen
Keyword(s):  
Adsorption Capacity ◽  
Dye Removal ◽  
Low Cost ◽  
Dye Adsorption ◽  
Maximum Adsorption Capacity ◽  
High Porosity ◽  
Order Model ◽  
Removal Capacity ◽  
Pseudo Second Order ◽  
The One

Currently, macroporous hydrogels have been receiving attention in wastewater treatment due to their unique structures. As a natural polymer, alginate is used to remove cationic dyes due to its sustainable features such as abundance, low cost, processability, and being environmentally friendly. Herein, alginate/montmorillonite composite macroporous hydrogels (cryogels) with high porosity, mechanical elasticity, and high adsorption yield for methylene blue (MB) were generated by the one-step cryogelation technique. These cryogels were synthesized by adding montmorillonite into gel precursor, followed by chemical cross-linking employing carbodiimide chemistry in a frozen state. The as-prepared adsorbents were analyzed by FT-IR, SEM, gel fraction, swelling, uniaxial compression, and MB adsorption tests. The results indicated that alginate/montmorillonite cryogels exhibited high gelation yield (up to 80%), colossal water uptake capacity, elasticity, and effective dye adsorption capacity (93.7%). Maximum adsorption capacity against MB was 559.94 mg g−1 by linear regression of Langmuir model onto experimental data. The Pseudo-Second-Order model was fitted better onto kinetic data compared to the Pseudo-First-Order model. Improved porosity and mechanical elasticity yielding enhanced dye removal capacity make them highly potential alternative adsorbents compared to available alginate/montmorillonite materials for MB removal.

scholarly journals Fabrication of a cost-effective lemongrass (Cymbopogon citratus) membrane with antibacterial activity for dye removal

RSC Advances ◽  
2019 ◽  
Vol 9 (58) ◽  
pp. 34076-34085 ◽  
Author(s):  
Zengxiao Cai ◽  
Rechana Remadevi ◽  
Md Abdullah Al Faruque ◽  
Mohan Setty ◽  
Linpeng Fan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Antibacterial Property ◽  
Low Cost ◽  
Dye Adsorption ◽  
Cost Effective ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Dye Wastewater ◽  
Cymbopogon Citratus

Dye wastewater has caused severe environmental and health problems. In this work, we have fabricated a novel low-cost membrane with good methylene blue dye adsorption and antibacterial property from naturally sustainable lemongrass (Cymbopogon citratus).

scholarly journals Use of activated carbon from Sapindus for the adsorption of methylene blue

2018 ◽  
Vol 19 (1) ◽  
pp. 112-122 ◽  
Author(s):  
Taous Hamad ◽  
◽  
Zoubir Benmaamar ◽  
Mohamad Nedjioui ◽  
Ahmed Boucherit ◽  
...  
Keyword(s):  
Experimental Data ◽  
Methylene Blue ◽  
Activated Carbon ◽  
Adsorption Kinetics ◽  
Low Cost ◽  
Distribution Functions ◽  
Blue Dye ◽  
Experimental Conditions ◽  
Effects Of Ph ◽  
Best Fit

Activated carbon was produced from Sapindusfruitresidue and wasused for the adsorption of methylene blue dye from simulated aqueous solution. Adsorption kinetics of methylene blue onto actived carbonwerestudied in a batch system. The effects of pH and contact time were examined. The goal of the present study was the determination of the optimal experimental conditions. The maximum adsorption of methylene blue occurredat pH 6.0(4.83 mg/g) and the lowest adsorption occurred at pH 2.0(4.35 mg/g).120 min was the time needed for apparent equilibrium.Adsorption modelling was determined by using theFreundlich and Langmuir isotherms.Data were interpreted based on R2and various error distribution functions. Adsorption isotherm was best described bynon linear Freundlichisotherm model. In order to determine the best-fit-adsorption kinetics, the experimental data were analyzed using pseudo-first-order, pseudo-second-order, pseudo-third-order, Esquivel, and Elovichmodels. The needed relative parameters were determined bylinear and non-linear regressive methods. The statistical functions were estimated to find the suitable method which fit the experimental data. Both methods were suitable to obtain the required parameters. The model that best fit the present equilibrium data was the linear Elovichmodel (type 1 and 2). The present work showed that activated carbon can be used as a low cost adsorbent for the methylene blue removal from aqueous solutions.

scholarly journals Equilibrium and Kinetics Study of Adsorption of Crystal Violet onto the Peel ofCucumis sativaFruit from Aqueous Solution

2012 ◽  
Vol 9 (3) ◽  
pp. 1091-1101 ◽  
Author(s):  
T. Smitha ◽  
S. Thirumalisamy ◽  
S. Manonmani
Keyword(s):  
Crystal Violet ◽  
Dye Removal ◽  
High Efficiency ◽  
Ph Value ◽  
Dye Adsorption ◽  
Second Order ◽  
Maximum Adsorption Capacity ◽  
Experimental Conditions ◽  
Pseudo Second Order ◽  
Cucumis Sativa

The use of low-cost, locally available, high efficiency and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of the peel ofCucumis sativafruit for the removal of crystal violet (CV) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was determined as 7.0. The adsorption of crystal violet followed pseudo-second order rate equation and fit well Langmuir and Freundlich equations. The maximum removal of CV was obtained at pH 7 as 92.15% for adsorbent dose of 0.2 g/50 mL and 25 mg L-1initial dye concentration at room temperature. The maximum adsorption capacity obtained from Langmuir equation was 34.24 mg g-1. Furthermore, adsorption kinetics of (CV) was studied and the rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation (R2> 0.9739). The peel ofCucumis sativafruit can be attractive options for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater show better removal percentage of (CV).

Kinetics and Equilibrium Modeling of Single and Binary Adsorption of Aluminum(III) and Copper(II) Onto Calamansi (Citrofortunella microcarpa) Fruit Peels

2021 ◽  
Author(s):  
Melanie G. Binauhan ◽  
Adonis P. Adornado ◽  
Lemmuel L. Tayo ◽  
Allan N. Soriano ◽  
Rugi Vicente C. Rubi
Keyword(s):  
Heavy Metal ◽  
Low Cost ◽  
Batch Adsorption ◽  
Spectroscopic Techniques ◽  
Aqueous Systems ◽  
Electron Microscopic ◽  
Experimental Conditions ◽  
Biosorption Process ◽  
Future System ◽  
Kinetics And Isotherms

The introduction of heavy metal wastes in the environment has posed health risks to both human and animals due to their toxicity. Since then, different studies have been explored for the possibility of utilizing new, low–cost, and sustainable adsorbent materials to get rid of heavy metals in the wastewater streams and aqueous solutions. This present study aimed to investigate and compare the adsorption ability of powdered calamansi (Citrofortunella microcarpa) fruit peels (PCFP) for the elimination of both Al(III) and Cu(II) ions in single (non–competitive) and binary (competitive) aqueous systems by batch adsorption techniques. Scanning electron microscopic and spectroscopic techniques were used to characterize the surface morphologies for the biosorbent and quantify the removal rates of heavy metal, respectively. Models were then used to describe in detail about the adsorption kinetics and isotherms for both single and binary metal systems. The influence and dependency of different experimental conditions on adsorption performance were also analyzed. The PCFP derived biosorbent was successful in removal of both Al(III) and Cu(II) ions in single (non–competitive) and binary (competitive) aqueous systems with 99, 70 and 91% adsorption rates, respectively. The biosorption process follows the Ho’s pseudo–second order kinetics. Furthermore, the Langmuir isotherm model was found helpful in explaining the adsorption mechanism. The dominating electrostatic interaction between adsorbents and adsorbates demonstrates monolayer adsorption at the binding sites on the surface of the peeling. Finally, the findings of this study will contribute to a better understanding of the adsorption process, as well as future system design applications in the treatment of heavy metal containing waste effluents.

scholarly journals Biosorptive Removal of Lead (II), Cadmium (II) and Arsenic (III) from Aqua Media on Vigna Unguiculata Leaf Powders

2018 ◽  
Vol 15 (3) ◽  
pp. 567-575
Author(s):  
K.G. Akpomie ◽  
C.C. Ezeofor ◽  
S.I. Eze ◽  
C.N. Okey ◽  
P.I. Ebiem-Kenechukwu
Keyword(s):  
Metal Ions ◽  
Vigna Unguiculata ◽  
Contact Time ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Biosorption Process ◽  
Pseudo Second Order ◽  
Best Fit ◽  
Scatchard Model

The biosorption of Cd (II), As (III) and Pb (II) ions from solution utilizing Vigna unguiculata leaf powders (VULP) as a low cost biosorbent was studied. The influence of temperature, metal ion concentration, biosorbent dose, contact time and pH on the sequestration process was examined by batch procedure. Increase in the biosorption of the three metal ions with increased pH and biosorbent dosage was obtained in this study.Equilibrium contact time of 20, 40 and 50min was achieved for Cd(II), As (III) and Pb(II) ions and biosorption was in the order As(III)> Cd(II) >Pb(II). Isotherm analysis was performed by the application of Langmuir, Freundlich, Flory-Huggins and Scatchard models. The Langmuir model gave the best fit with maximum monolayer biosorption capacity of 109.1, 105 and 119.3 mg/g for Cd (II), Pb (II) and As (III) respectively. Scatchard model confirmed a homogenous surface of VULP and monolayer biosorption of metal ions. Pseudo second order model showed the best fit compared to pseudo first order, Elovich and Banghams kinetic models according to kinetic analysis. Thermodynamics study revealed a feasibly, spontaneous exothermic biosorption process. The result showed good potentials of VULP as suitable cheap biosorbent for attenuation of Cd (II), Pb(II) and As (III) ions from polluted wastewaters.

scholarly journals Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1107 ◽  
Author(s):  
Camila B. Paz ◽  
Rinaldo S. Araújo ◽  
Lais F. Oton ◽  
Alcineia C. Oliveira ◽  
João M. Soares ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photoelectron Spectroscopy ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Nitrogen Adsorption ◽  
Carbon Layer ◽  
Synthetic Dyes ◽  
Experimental Conditions ◽  
Paramagnetic Resonance ◽  
X Ray

The presence of synthetic dyes in water causes serious environmental issues owing to the low water quality, toxicity to environment and human carcinogenic effects. Adsorption has emerged as simple and environmental benign processes for wastewater treatment. This work reports the use of porous Fe-based composites as adsorbents for Acid Red 66 dye removal in an aqueous solution. The porous FeC and Fe/FeC solids were prepared by hydrothermal methods using iron sulfates and sucrose as precursors. The physicochemical properties of the solids were evaluated through X-ray diffraction (XRD), Scanning electron microscopy coupled with Energy dispersive spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared s (FTIR), Raman and Mössbauer spectroscopies, nitrogen adsorption–desorption isotherms, Electron Paramagnetic Resonance (EPR) and magnetic saturation techniques. Results indicated that the Fe species holds magnetic properties and formed well dispersed Fe3O4 nanoparticles on a carbon layer in FeC nanocomposite. Adding iron to the previous solid resulted in the formation of γ-Fe2O3 coating on the FeC type structure as in Fe/FeC composite. The highest dye adsorption capacity was 15.5 mg·g−1 for FeC nanocomposite at 25 °C with the isotherms fitting well with the Langmuir model. The removal efficiency of 98.4% was obtained with a pristine Fe sample under similar experimental conditions.

scholarly journals Investigate the Antibacterial Activity of Lichen Biomass Used in Textile Dye Removal

2020 ◽  
Vol 11 (2) ◽  
pp. 117
Author(s):  
Ülküye Dudu Gül
Keyword(s):  
Textile Industry ◽  
Biological Treatment ◽  
Dye Removal ◽  
Antimicrobial Properties ◽  
Textile Wastewater ◽  
Antimicrobial Effect ◽  
Textile Dye ◽  
Synthetic Dyes ◽  
Biosorption Process ◽  
Treatment Technologies

All over the world, the treatment of textile wastewater has become a significant problem due to the development of the textile industry. Particularly, the treatment of synthetic dyes, which are found abundantly amounts in textile wastewater, has gained importance. Recent studies have focused on the use of biological treatment technologies to remove pollutants in water. On the other hand, the disposal of wastes from biological treatment technologies was considered as another environmental problem. This study aims to compare the antimicrobial properties of the extract obtained from dye loaded and un-loaded lichen biomass after the biosorption process. According to the results of this study, it was found that the extract obtained from the waste lichen biomass, which has loaded with the textile dye in the decolorization process, showed a similar antimicrobial effect with the unloaded lichen extract. To sum up the waste lichen biomass used to remove textile dyes can be reused for the application of antimicrobial products.

scholarly journals Various Adsorbents for Removal of Rhodamine B Dye: A Review

2021 ◽  
Vol 21 (4) ◽  
pp. 1039
Author(s):  
Zainab Mohammad Saigl
Keyword(s):  
Rhodamine B ◽  
Low Cost ◽  
Dye Adsorption ◽  
Industrial Effluents ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Waste Biomass ◽  
Solution Ph ◽  
Experimental Conditions ◽  
Wide Range

Lately, there has been an increase in dye manufacturing, resulting in increased environmental pollution. Recent studies show a wide availability of usage adsorbents, including banana peels, potatoes, algae, etc. Food and Drug Administration prohibited the use of Rhodamine B (RhB) for its toxicity and harmful effects. Therefore, this study presents a wide range of non-conventional low-cost alternative adsorbents to remove RhB dye from wastewater. It has been observed that the mechanism of the dye adsorption is focused on kinetics, isotherm, and thermodynamics models, which depend on the chemical nature of the materials and various physicochemical experimental conditions such as solution pH, initial dye concentration, adsorbent dosage, and temperature of the system. The kinetic data of adsorption of RhB dye usually follow the pseudo-first-order and pseudo-second-order kinetic models. Several studies revealed that Langmuir and Freundlich adsorption isotherm models are frequently used to evaluate the adsorption capacity of the adsorbents. Furthermore, thermodynamic examination showed that RhB adsorption was endothermic and unconstrained in nature. Thus, both photocatalytic degradation and adsorption methods offer good potential to remove RhB dye from industrial effluents. The work is in progress to evaluate the possibility of using other modified waste biomass for industrial pollution control.

scholarly journals Diatomite Chemical Activation for Effective Adsorption of Methylene Blue Dye from Model Textile Wastewater

2021 ◽  
Vol 12 (1) ◽  
pp. 23-28
Author(s):  
Parisa Ebrahimi ◽  
◽  
Anand Kumar
Keyword(s):  
Methylene Blue ◽  
Surface Characterization ◽  
Dye Removal ◽  
Low Cost ◽  
Chemical Activation ◽  
Textile Wastewater ◽  
Blue Dye ◽  
Dye Wastewater ◽  
Experimental Conditions ◽  
Basic Solutions

Dye wastewater produced in textile industries is a warning issue that threatens the environment due to discharge into the waterway. This study reviewed the adsorption of Methylene Blue (MB), as a toxic dye, onto diatomite adsorbent. A series of chemical modifications were examined by impregnating diatomite into various acidic and basic solutions to obtain the most active sample with the highest capacity. Both raw diatomite (RD) and modified diatomite (MD) were analyzed under different experimental conditions, such as PH, contact time, the dose of adsorbent to attain the optimum quantities of each in which adsorption capacity and removal percentage were in their highest amount. FESEM analysis indicated the surface characterization and the morphology of both adsorbents. The results of batch experiments showed that the equilibration removal capacities of MB under the optimum condition were 72 mg/g for RD and 127 mg/g for MD. Overall results suggested that due to the low-cost, naturally available, simple treatment methods and materials, and sustainability, the modified adsorbent has the potential for dye removal in the practical process.

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