Fast and Effective Confiscation of Methylene Blue Dye from Aqueous Medium by Luffa aegyptiaca Peel

2020 ◽  
Vol 16 ◽  
Author(s):  
Fouzia Mashkoor ◽  
Mohd Ali Khan ◽  
Abu Nasar
Keyword(s):  
Methylene Blue ◽  
Aqueous Media ◽  
Water System ◽  
Polluted Water ◽  
Blue Dye ◽  
Severe Problem ◽  
Maximum Sorption Capacity ◽  
Batch Parameters ◽  
Luffa Aegyptiaca ◽  
Adsorbent Dose

Background: Dye contamination of natural water system is a severe problem due to the considerable enhancement in industrial activities. As the dyes are highly visible, non-biodegradable, and toxic in nature, they are considered as a severe source of water pollution. Therefore, it is imperative to develop an inexpensive, simple, effective, and easy technique for their elimination from wastewater. Methods: Luffa aegyptiaca peel (LuAP), kitchen waste was exploited as a low-priced biosorbent for the adsorptive elimination of cationic methylene blue (MB) dye. The influence of several batch parameters, i.e., adsorbent dose, pH of the solution, different initial dye concentration, adsorbate/adsorbent contact time, and temperature were optimized for maximum adsorption of MB from aqueous media. Furthermore, thermodynamics, kinetics, and isotherm studies were also carried out in order to comprehend the dominant mechanism for the adsorptive elimination of MB. Results: The kinetic data for the adsorption of MB onto the LuAP followed closely by the pseudo-second-order (PSO) equation, and the adsorption equilibrium data were observed to be well demonstrated by Langmuir isotherm. The equilibrium was attained in 180 min with maximum sorption capacity of 52.63 mg/g at an adsorbent dose 3 g/L, pH of 7, and temperature 303 K. Thermodynamic study reveals that the removal of MB by LuAP is spontaneous and endothermic. Conclusion: It has been concluded that LuAP can be efficiently utilized for the confiscation of cationic MB dye from polluted water.

Utilization of Jackfruit Peel as a Low-Cost adsorbent for the Removal of Methylene Blue Dye from Synthetically Polluted Water

2020 ◽  
Vol 16 ◽  
Author(s):  
Mohsina Ahmed ◽  
Abu Nasar
Keyword(s):  
Methylene Blue ◽  
Low Cost ◽  
Aqueous Media ◽  
Polluted Water ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Contaminated Water ◽  
Abrupt Increase ◽  
Agriculture Waste ◽  
Pseudo Second Order

Background: Due to an abrupt increase in the contamination of freshwater systems by dye-containing wastewater, there is an urgent need to find robust and greener adsorbents for the elimination of dyes from the contaminated water. As the dyes not only change the appearance of water but are also a cause of many serious problems, which can be some time mutagenic and carcinogenic. Methods: This research paper is based on the use of adsorbent made from the peel of jackfruit (POJ). The adsorbent derived from agriculture waste was low cost and efficient for the elimination of methylene blue (MB) dye from aqueous media. Batch adsorption experiments were accompanied by varying the pH of the solution, contact time, POJ dosage, and initial MB concentration. Results: It was seen that adsorption of MB onto Jackfruit peel adsorbent follows pseudo-second-order (PSO) kinetics and Langmuir isotherm with maximum biosorption capacity (qm) of 232.55 mg/g. The thermodynamic study revealed that the adsorption was spontaneous, endothermic, and associated with the rise in entropy. Conclusion: In view of the low-cost and promising adsorption efficiency, the present investigation submits that that POJ is novel and economically feasible adsorbent for the removal of MB from aqueous solutions.

Kinetics and Isotherms Studies of methylene blue Basic Dye from Aqueous Solution onto Selenicereus grandiflorus Activated Carbon

2019 ◽  
Vol 4 (1-2) ◽  
pp. 1-6
Author(s):  
M. Mahadeva Swamy ◽  
B.M. Nagabhushana ◽  
Nagaraju Kottam
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Activated Carbon ◽  
Point Of Zero Charge ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Batch Mode ◽  
Adsorption Studies ◽  
Kinetics And Isotherms ◽  
Adsorbent Dose

The present experiment explains the effectiveness of adsorption studies of methylene blue dye from aqueous solutions on activated carbon from Selenicereus grandiflorus (SG) treated with conc. sulfuric acid. The sulphuric acid-treated Selenicereus grandiflorus activated carbon (SGAC) was used as low-cost adsorbent for the removal of methylene blue dye from aqueous solution. It suggests an ideal alternative method to adsorption of dye compared to other expensive treatment options. The adsorption studies have been conducted at different experimental parameters, i.e., pH, contact time, adsorbent dose and initial dye concentration. The batch mode experiments were conducted by different adsorbent dose (0.03-0.150 g per 50 mL), pH of the solution (2-12), effect of time (3-18 min), initial dye concentration (10 mg/L), point of zero charge and regeneration of spent adsorbent studies. Langmuir model shows better fit to the equilibrium data (R2 = 0.966) than Freundlich model. The adsorption capacity (Qm) of SGAC increases with increasing dosage where Qm is 16.17 mg g-1.

scholarly journals Synthesis and Characterization of a Chemically-Activated Novel Mesoporous Silica for Cobalt Decontamination from Polluted Water

2019 ◽  
Vol 14 (2) ◽  
pp. 276-289 ◽  
Author(s):  
Sina Matavos-Aramyan ◽  
Sadaf Soukhakian
Keyword(s):  
Mesoporous Silica ◽  
Contact Time ◽  
Aqueous Media ◽  
Co2 Concentration ◽  
Polluted Water ◽  
Co2 Removal ◽  
High Porosity ◽  
Order Kinetic ◽  
Solution Ph ◽  
Adsorbent Dose

Mesoporous silica was synthesized by a chemical process and its efficiency was investigated for removal of cobalt (Co2+) ions from contaminated water in a laboratory scale. The characteristics of synthesized mesoporous were analyzed by SEM/TGA. Optimal conditions were determined for important parameters such as solution pH, the absorbent dose, the initial Co2+ concentration, and contact time by a single-variable method through the batch experiments. The SEM results confirmed the synthesized silica had high porosity with a honeycomb-like structure. The results showed that with an increasing adsorbent dose and contact time to the optimum, the efficiency of Co2+ adsorption increased. However, with increasing concentration of Co2+, the removal efficiency decreased. At optimal contact time (8 h), 85 % of Co2+ was removed. The maximum adsorption efficiency at pH =7, initial Co2+ concentration of 5 ppm, and at the adsorbent dose 0.3 g/50 ml, was 89%. The study of adsorption isotherm and kinetic models showed that the adsorption process followed the Freundlich isotherm (R2 = 0.9359) and the second-order kinetic model (R2=0.999). Therefore, the synthesized mesoporous silica presented a chemical adsorption mechanism for Co2+ removal from aqueous media and can be utilized in wastewater treatment containing divalent heavy metals such as Co2+.

scholarly journals Alkaline treatment of pine nutshells to improve the treatment of model water from dye methylene blue

2019 ◽  
Vol 126 ◽  
pp. 00075
Author(s):  
Svetlana Sverguzova ◽  
Ildar Shaikhiev ◽  
Julia Voronina ◽  
Olga Doroganova
Keyword(s):  
Methylene Blue ◽  
Aqueous Media ◽  
Alkaline Treatment ◽  
Blue Dye ◽  
Cleaning Efficiency ◽  
Pine Nut ◽  
Sorption Material ◽  
Naoh Solution ◽  
Technological Options ◽  
Model Water

In the article presented the data on the possibility of using crushed pine nutshell to extract methylene blue dye from aqueous solutions. In Russia, in Siberia, located up to 80% of the world's reserves of Siberian cedar pine. Up to 12 million tons of pine nuts can be acquired annually, when processed into kernels or cedar oil, pine nut shell is formed as a waste, representing 51-59% of the nut weight itself. Despite proposed technological options for usage of pine nutshells, the issue of disposal of this material has not been fully resolved. One of the alternative options for the disposal of pine shells is obtaining sorption material for the extraction of pollutants from aqueous media. To improve the cleaning efficiency, the pine shell was treated with 10% NaOH solution. It was found that processing pine nutshells with 10% NaOH solution for 5 minutes at a temperature of 25 °C gives an improvement in cleaningefficiency of 96%, and an increase in the temperature of NaOH solution up to 97%. The recommended particle size of the pine nuts shell is less than 2 mm.

Removal of methylene blue dye from an aqueous media using superabsorbent hydrogel supported on modified polysaccharide

2006 ◽  
Vol 301 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Alexandre T. Paulino ◽  
Marcos R. Guilherme ◽  
Adriano V. Reis ◽  
Gilsinei M. Campese ◽  
Edvani C. Muniz ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Aqueous Media ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Superabsorbent Hydrogel

Study of the interaction between methylene blue dye and quenched polyelectrolyte with tunable hydrophobicity in aqueous media

2019 ◽  
Vol 7 (5) ◽  
pp. 103312
Author(s):  
Sondess Zarroug ◽  
Souha Ben Mahmoud ◽  
Ahmed Hichem Hamzaoui ◽  
Wafa Essafi
Keyword(s):  
Methylene Blue ◽  
Aqueous Media ◽  
Blue Dye ◽  
Methylene Blue Dye

scholarly journals Highly Efficient Methylene Blue Dye Removal by Nickel Molybdate Nanosorbent

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1378
Author(s):  
Souad Rakass ◽  
Hicham Oudghiri Hassani ◽  
Ahmed Mohmoud ◽  
Fethi Kooli ◽  
Mostafa Abboudi ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Kinetic Studies ◽  
Cost Effective ◽  
Solution Concentration ◽  
Lower Amount ◽  
Blue Dye ◽  
Order Kinetic ◽  
Thermal Regeneration ◽  
Nickel Molybdate ◽  
Adsorbent Dose

Removing methylene blue (MB) dye from aqueous solutions was examined by the use of nickel molybdate (α-NiMoO4) as an adsorbent produced by an uncomplicated, rapid, and cost-effective method. Different results were produced by varying different parameters such as the pH, the adsorbent dose, the temperature, the contact time, and the initial dye concentration. Adsorbent dose and pH had a major removal effect on MB. Interestingly, a lower amount of adsorbent dose caused greater MB removal. The amount of removal gained was efficient and reached a 99% level with an initial methylene blue solution concentration of ≤160 ppm at pH 11. The kinetic studies indicated that the pseudo-second-order kinetic model relates very well with that of the obtained experimental results. The thermodynamic studies showed that removing the MB dye was favorable, spontaneous, and endothermic. Impressively, the highest quantity of removal amount of MB dye was 16,863 mg/g, as shown by the Langmuir model. The thermal regeneration tests revealed that the efficiency of removing MB (11,608 mg/g) was retained following three continuous rounds of recycled adsorbents. Adsorption of MB onto α-NiMoO4 nanoparticles and its regeneration were confirmed by Fourier transform infrared spectroscopy (FTIR) analysis and scanning electron microscopy (SEM) analysis. The results indicated that α-NiMoO4 nanosorbent is an outstanding and strong candidate that can be used for removing the maximum capacity of MB dye in wastewater.

scholarly journals Activated Graphene Oxide-Calcium Alginate Beads for Adsorption of Methylene Blue and Pharmaceuticals

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6343
Author(s):  
Burcu Gunes ◽  
Yannick Jaquet ◽  
Laura Sánchez ◽  
Rebecca Pumarino ◽  
Declan McGlade ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Calcium Alginate ◽  
Adsorption Process ◽  
Alginate Beads ◽  
Blue Dye ◽  
First Order ◽  
Adsorption Capacities ◽  
Pseudo First Order ◽  
Adsorbent Dose

The remarkable adsorption capacity of graphene-derived materials has prompted their examination in composite materials suitable for deployment in treatment of contaminated waters. In this study, crosslinked calcium alginate–graphene oxide beads were prepared and activated by exposure to pH 4 by using 0.1M HCl. The activated beads were investigated as novel adsorbents for the removal of organic pollutants (methylene blue dye and the pharmaceuticals famotidine and diclofenac) with a range of physicochemical properties. The effects of initial pollutant concentration, temperature, pH, and adsorbent dose were investigated, and kinetic models were examined for fit to the data. The maximum adsorption capacities qmax obtained were 1334, 35.50 and 36.35 mg g−1 for the uptake of methylene blue, famotidine and diclofenac, respectively. The equilibrium adsorption had an alignment with Langmuir isotherms, while the kinetics were most accurately modelled using pseudo- first-order and second order models according to the regression analysis. Thermodynamic parameters such as ΔG°, ΔH° and ΔS° were calculated and the adsorption process was determined to be exothermic and spontaneous.

Effect of synthesis method of LaNiO3 type materials with perovskite structure on their features and in the methylene blue dye removal from aqueous media

2021 ◽  
Vol 16 (12) ◽  
Author(s):  
Joenesson Fílip Santos Ribeiro ◽  
Andreza Alves Souza ◽  
Elaine Cristina Nogueira Lopes Lima ◽  
Marcelo José Barros Souza ◽  
Anne Michelle Garrido Pedrosa
Keyword(s):  
Methylene Blue ◽  
Perovskite Structure ◽  
Dye Removal ◽  
Aqueous Media ◽  
Synthesis Method ◽  
Blue Dye ◽  
Methylene Blue Dye

Óxidos com estrutura perovskita são alvo de importantes estudos, pois são materiais versáteis que apresentam aplicações magnéticas, elétricas, ópticas, catalíticas, adsortivas, entre outras, e também são facilmente sintetizados. Essas aplicações são potencialmente influenciadas pelo método de síntese e, nesse sentido, diversos métodos têm sido utilizados na preparação desses materiais, a fim de otimizar suas características e propriedades. No presente trabalho, materiais do tipo LaNiO3 com estrutura perovskita foram preparados a partir dos seguintes métodos: proteíco modificada usando gelatina como agente complexante, mecanossíntese e método de combustão em placa de aquecimento e microondas. Os materiais obtidos foram caracterizados por técnicas físico-químicas e avaliados como adsorventes para a remoção do corante azul de metileno em meio aquoso. Todos os materiais apresentaram potencial de remoção do corante do meio, com destaque para o material obtido por mecanossíntese, que apresentou maior eficiência de descoloração do corante. Após os testes de remoção do corante, a estrutura da perovskita foi preservada e o adsorvente foi reutilizado após ser submetido à calcinação a 900 °C quando ocorreu a degradação simultânea do corante previamente adsorvido. Os materiais reaproveitados ainda apresentavam alto potencial de remoção de corantes.

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