Preferentially grown nanostructured iron disulfide (FeS2) for removal of industrial pollutants

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99120-99128 ◽  
Author(s):  
Gurpreet Kaur ◽  
Bikramjeet Singh ◽  
Paviter Singh ◽  
Manpreet Kaur ◽  
Karmjeet Kaur Buttar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Hydrothermal Method ◽  
Low Cost ◽  
Cost Effective ◽  
Textile Dye ◽  
Industrial Pollutants ◽  
Iron Disulfide

Preferentially grown nanostructured iron disulfide pyrite (111) was successfully synthesized using a low cost effective hydrothermal method, then employed as a photocatalyst for degradation of methylene blue and the textile dye Synazol Yellow K-HL.

Assessment of Urtica as a low-cost adsorbent for methylene blue removal: kinetic, equilibrium, and thermodynamic studies

2015 ◽  
Vol 69 (7) ◽  
Author(s):  
Mohammad Peydayesh ◽  
Mojgan Isanejad ◽  
Toraj Mohammadi ◽  
Seyed Mohammad Reza Seyed Jafari
Keyword(s):  
Methylene Blue ◽  
Adsorption Process ◽  
Low Cost ◽  
Cost Effective ◽  
Sem Analysis ◽  
Order Kinetic ◽  
Solution Ph ◽  
Factors Affecting ◽  
Order Kinetic Model ◽  
Mb Adsorption

AbstractMethylene blue (MB) removal using eco-friendly, cost-effective, and freely available Urtica was investigated. The morphology of the adsorbent surface and the nature of the possible Urtica and MB interactions were examined using SEM analysis and the FTIR technique, respectively. Various factors affecting MB adsorption such as adsorption time, initial MB concentration, temperature, and solution pH were investigated. The adsorption process was analysed using different kinetic models and isotherms. The results showed that the MB adsorption kinetic follows a pseudo-second-order kinetic model and the isotherm data fit the Langmuir isotherm well. Thermodynamic parameters, such as ΔG°, ΔH°, and ΔS°, were also evaluated, and the results indicated that the adsorption process is endothermic and spontaneous in nature. The MB adsorption capacity of Urtica was found to be as high as 101.01 mg g

scholarly journals Mangosteen Peel-Alginate Biocomposite Beads An Efficient and Sustainable Adsorbent For Decontamination of Methylene Blue

2021 ◽  
Author(s):  
Asma Nasrullah ◽  
Amir Sada Khan ◽  
A. H. Bhat ◽  
Taghreed M. Fagieh ◽  
Ersaa M. Bakhsh ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Low Cost ◽  
Cost Effective ◽  
Alginate Beads ◽  
Basic Medium ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Removal Capacity ◽  
Pseudo Second Order ◽  
Best Fit

Abstract This study examines mangosteen peels waste and alginate beads (MPAB) as an efficient, sustainable and low-cost adsorbent for removal of methylene blue (MB) cationic dye from aqueous solution in a batch adsorption system. Surface functional groups, surface morphology, surface properties, and thermal stability of MBAB were analyzed using various instrumental techniques such as FTIR, FESEM, BET and TGA techniques. MPAB adsorption efficiency for MB was investigated through variation of dosage (0.01- 0.08g), pH (2- 10), contact time (60- 1320 min), MB concentration (20- 100 mg/L) and temperature (298- 333K). MPAB showed maximum removal capacity of 373 mg/g at 25 oC in basic medium. Kinetic and isotherm studies showed that pseudo second order kinetic models and both Freundlich and Langmuir isotherms best fit the experimental data. The findings revealed that novel MPAB has the potential to be a cost-effective adsorbent for removal of textile dyes.

scholarly journals Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

2020 ◽  
Vol 17 (2) ◽  
pp. 526 ◽  
Author(s):  
Thaisa Caroline Andrade Siqueira ◽  
Isabella Zanette da Silva ◽  
Andressa Jenifer Rubio ◽  
Rosângela Bergamasco ◽  
Francielli Gasparotto ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Sugarcane Bagasse ◽  
Adsorption Isotherms ◽  
Low Cost ◽  
Cost Effective ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Effective Option ◽  
Pseudo Second Order ◽  
Isotherms And Thermodynamics

Adsorption in biomass has proven to be a cost-effective option for treatment of wastewater containing dyes and other pollutants, as it is a simple and low cost technique and does not require high initial investments. The present work aimed to study the adsorption of methylene blue dye (MB) using sugarcane bagasse (SCB). The biomass was characterized by scanning electron microscopy (SEM). Adsorption studies were conducted batchwise. Kinetics, adsorption isotherms, and thermodynamics were studied. The results showed that SCB presented a maximum adsorption capacity of 9.41 mg g−1 at 45 °C after 24 h of contact time. Adsorption kinetics data better fitted the pseudo-second order model, indicating a chemical process was involved. The Sips’s three-parameter isotherm model was better for adjusting the data obtained for the adsorption isotherms, indicating a heterogeneous adsorption process. The process showed to be endothermic, spontaneous, and feasible. Therefore, it was concluded that SCB presented as a potential biosorbent material for the treatment of MB-contaminated waters.

Removal of methylene blue using balanites aegyptiaca bark powder as low-cost and eco-friendly biosorbent

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ibrahim A. Amar ◽  
Salma M. Hassan ◽  
Fatima H. Aqeela ◽  
Mohamed Y. Najem ◽  
Fatima A. Altohami
Keyword(s):  
Methylene Blue ◽  
Low Cost ◽  
Point Of Zero Charge ◽  
Solution Temperature ◽  
Textile Dye ◽  
Solution Ph ◽  
Balanites Aegyptiaca ◽  
Experimental Conditions ◽  
Content Type ◽  
Kinetics And Isotherms

Purpose This paper aims to investigate the potential application of Balanites aegyptiaca bark powder (BABP) for removing a basic textile dye, methylene blue (MB), from aqueous solutions. Design/methodology/approach The biosorbent (BABP) was characterized using Fourier transform infrared spectroscopy (FTIR) and point of zero charge (pHPZC). Batch mode was selected to study the biosorption of MB onto BABP surface at different experimental conditions (shaking speed, contact time, initial solution pH, ionic strength, solution temperature, biosorbent dosage and initial dye concentration). Besides, the reusability of BABP for MB biosorption was also examined. Findings The biosorption results revealed that approximately 96% of MB was removed successfully at the optimized operational conditions. Pseudo-second-order and Langmuir models, respectively, better described the adsorption kinetics and isotherms. The monolayer biosorption capacity (qmax) for MB was about 97.09 mg/g. According to thermodynamics findings, the MB biosorption onto BABP is an exothermic and spontaneous process. The results demonstrate that BABP can be considered as potential eco-friendly, readily available and low-cost biosorbent for hazardous textile dyes removal from water bodies and also provides a promising method for minimization of agricultural solid wastes (e.g. plant barks). Originality/value The utilization of Balanites aegyptiaca bark powder (BABP), solid waste material, as low-cost and eco-friendly biosorbent for the removal of hazardous basic textile dye (methylene blue) from the aquatic environment.

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).

Biosorption of Basic Textile Dye from Aqueous Solution Using Pongamia pinnata as Adsorbent

2018 ◽  
Vol 877 ◽  
pp. 13-19
Author(s):  
Bhargavi Gunturu ◽  
Geethalakshmi Ramakrishnan ◽  
Renganathan Sahadevan
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Low Cost ◽  
Mass Transfer Rate ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Dye Uptake ◽  
Adsorption Parameters

In the present study, the efficiency of biosorbent derived form Pongamiapinata to remove a basic textile dye Methylene Blue from an aqueous solution was evaluated in batch system. The influence of adsorption parameters such as biosorbent dosage (0.2-1.0g/L), PH (2-10) and initial dye concentration (30-110 mg/L) on the biosorption process was studied. It was noticed that adsorbent dosage has negative effect on dye uptake, could be due to reduced mass transfer rate of dye on to adsorbent. High equilibrium uptake was observed at PH 8. However, initial dye concentration has shown linear relationship with dye uptake. As the dye concentration increases, the number of dye molecules available to be adsorbed on to adsorbent surface increases. Equilibrium isotherms for the adsorption of methylene blue was analyzed through Langmuir and Freundlich isotherm models. The data best fit with Freundlich model than Langmuir isotherm model, suggesting the adsorption was by multilayer mechanism. Maximum adsorption capacity (Q ̊) was found to be 40.49mg/g. It can be concluded from the study that the adsorbent derived from P.pinnata can be a potential low cost competent of activated carbon for textile dyes removal.

scholarly journals Adsorption Studies of Textile Dye (Chrysoidine) from Aqueous Solutions Using Activated Sawdust

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Muhammad Waqar Ashraf ◽  
Nidal Abulibdeh ◽  
Abdus Salam
Keyword(s):  
Aqueous Solutions ◽  
Low Cost ◽  
Cost Effective ◽  
Effect Of Temperature ◽  
Contamination Level ◽  
Textile Dye ◽  
Sorption Ability ◽  
Feather Grass ◽  
The Difference ◽  
Isotherm Equations

Chrysoidine is a type of industrial azo dye and a well-known toxicant. Due to its good dyeing characteristics, it is widely used for dyeing leather, paper, feather, grass, wood, bamboo, etc. Hence, it is very important to remove or reduce its concentration below the contamination level in the waste line by using low-cost technologies. Sawdust is a plentiful material available very cheaply from sawmills and woodworks. Therefore, the present work was conducted to study sorption ability of both raw sawdust and chemically activated sawdust carbon on the removal of chrysoidine from the aqueous solutions. Adsorption isotherms of the dye on sawdust were determined and correlated with usual isotherm equations like Freundlich and Langmuir. Experimental results have shown that sawdust has a high adsorption efficiency, and the adsorption of chrysoidine followed Freundlich’s isotherm. Although raw sawdust proved to be slightly less efficient in comparison to chemically treated sawdust but in economic terms, raw sawdust is more cost-effective as the difference in the percent dye removal is less than the difference in the manufacturing costs. The influence of several parameters such as effect of temperature, adsorbent dose, adsorption time, etc., on the adsorption process was studied along with thermodynamic parameters such as enthalpy (ΔH°) and entropy (ΔS°).

scholarly journals Utilization of treated coffee husk as low-cost bio-sorbent for adsorption of methylene blue

2020 ◽  
Vol 38 (5-6) ◽  
pp. 205-222 ◽  
Author(s):  
Adane Adugna Ayalew ◽  
Tadele Assefa Aragaw
Keyword(s):  
Methylene Blue ◽  
High Efficiency ◽  
Low Cost ◽  
Chemical Activation ◽  
Cost Effective ◽  
Coffee Husk ◽  
Equilibrium Data ◽  
Endothermic Process ◽  
Pseudo Second Order ◽  
Maximum Removal

Dyes and pigments have been used in many industries for colorization purpose but they pose hazards to the environment and end users of water. Therefore, it is important to remove this pollutant from waste water before their final disposal. This study aimed to investigate the removal of methylene blue by cost effective, ecofriendly, high-efficiency bio-sorbent from activated coffee husk. The process was carried out using chemical activation (H3PO4) process. Fourier transform infrared spectroscopy and surface analyzer (Brunauer-Emmett-Teller) were used to characterize the adsorbent. The specific surface area adsorbent was obtained as 28.54 m2/g. The maximum removal efficiency was obtained as 96.9% at pH of 5, initial dye concentration of 20 mg/L, adsorbent dosage of 0.8 g/50 mL, for contact time of 50 min and 30°C temperature on the activation surface of coffee husk. Langmuir model was found to fit the equilibrium data for methylene blue adsorption with 6.82 mg/g at 30°C. The adsorption process follows the pseudo-second-order model. Thermodynamics analysis showed that the adsorption of methylene blue on to the activated coffee husk was a spontaneous and endothermic process. The experimental data obtained in the present study proved that coffee husk is a suitable bio-sorbent in removal of cationic dyes.

scholarly journals Synthesis of N-Doped ZnO Nanocomposites for Sunlight Photocatalytic Degradation of Textile Dye Pollutants

2020 ◽  
Vol 4 (2) ◽  
pp. 49 ◽  
Author(s):  
Rowshon Kabir ◽  
Md. Abu Khalid Saifullah ◽  
Abrar Zadeed Ahmed ◽  
Shah Md. Masum ◽  
Md. Ashraful Islam Molla
Keyword(s):  
Photocatalytic Degradation ◽  
Low Cost ◽  
Nir Spectroscopy ◽  
Cost Effective ◽  
Infrared Region ◽  
Textile Dye ◽  
X Ray Diffraction ◽  
Sunlight Irradiation ◽  
Dye Pollutants ◽  
Doped Zno

Undoped and N-doped ZnO nanocomposites are produced by a simple and low-cost mechanochemical method. The characterizations of all nanocomposites are examined by X-ray diffraction (XRD), Fourier transform-infrared (FT-IR), scanning electron microscopy (SEM) and UV-Vis-NIR spectroscopy. The XRD measurements show that the crystal sizes of undoped and N-doped ZnO nanocomposites are ~29 and ~28 nm, respectively. The UV-Vis-NIR spectroscopy results illustrate that the transmittance of the 7 wt% N/ZnO in the visible and infrared region is a bit higher than the undoped ZnO. The photocatalytic activity of undoped and N-doped ZnO nanocomposites is investigated for the degradation of Methylene Blue (MB) and Rhodamine B (RhB) aqueous solution with direct sunlight irradiation. The photocatalytic degradation percentages with 7 wt% N/ZnO for 5 and 10 mg/L MB dye solution are found to be 93.70% and 98.11%, respectively, whereas 78.40% and 89.15% degradation percentages are found with undoped ZnO, after 3 h sunlight irradiation. Under the same conditions, the photocatalytic degradation value of RhB dye (10 mg/L) solution is measured to be 86.21% for 7 wt% N/ZnO and 64.75% for undoped ZnO. The N-doped ZnO nanocomposites are found to exhibit enhanced photocatalytic performance for both dyes’ degradation under sunlight irradiation in comparison with the undoped ZnO. Therefore, the photocatalytic degradation treatment of wastewater including dye pollutants with sunlight is an easy and simple technique, and cost-effective.

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