Effects of Operational Parameters on the Decolourisation of Reactive Red 195 Dye from Aqueous Solutions by Electrochemical Treatment

2019 ◽  
pp. 5868-5885 ◽  
Author(s):  
Zürriye Gündüz ◽  
Keyword(s):  
Aqueous Solutions ◽  
Electrochemical Treatment ◽  
Operational Parameters ◽  
Reactive Red 195

scholarly journals Removal of anthracene from aqueous solutions using modified magnetic Fe3O4 nanoparticles by dendrimer polymer chains and 4-aminophenol Ligandide

2020 ◽  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Process ◽  
Polymer Chains ◽  
Isotherm Models ◽  
Operational Parameters ◽  
X Ray Diffraction ◽  
Residual Concentration ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
The Fourier Transform

Background: Anthracene is an organic compound and environmentally resistant pollutant that causes severe damage to human health due to toxic and carcinogenic properties. The present study aimed to investigate the efficiency of magnetic dendrimer nano-adsorbent for the removal of anthracene from aqueous solutions. Methods: In this study, the synthesized iron oxide nanoparticles were modified by dendrimer polymer chains and 4-aminophenol ligand. The Fourier-transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy were conducted to examine the nano-absorbent properties. Different operational parameters in the adsorption process in batch and laboratory conditions were also studied, and the adsorbent reusability was correspondingly examined in this study. The residual concentration of anthracene in aqueous solution was determined and reported by a spectrophotometer. Findings: Optimization results showed that the maximum adsorbent capacity under optimum conditions (pH=7, 20 mg/L anthracene concentration, 0.5 g/L adsorbent dosage, and 30 min contact time) was equal to 83 mg/g. The experimental data fitted with different isotherm models showed that the equilibrium data were well described by the Langmuir model. In this study, the adsorption process overlapped more with the pseudo-second-order kinetics model. Conclusion: The obtained results indicated that the synthesized nanostructured adsorbent has a high adsorption capacity with high recovery and is efficient enough to remove anthracene from aqueous solutions.

scholarly journals Removal of Phosphate Ions from Aqueous Solutions by Adsorption onto Leftover Coal

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1381
Author(s):  
Dereje Tadesse Mekonnen ◽  
Esayas Alemayehu ◽  
Bernd Lennartz
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Contact Time ◽  
Aqueous Media ◽  
Effect Of Temperature ◽  
Phosphate Adsorption ◽  
Operational Parameters ◽  
Solution Ph ◽  
Retention Efficiency ◽  
Set Up

High loadings of wastewater with phosphors (P) require purification measures, which can be challenging to realize in regions where the technical and financial frame does not allow sophisticated applications. Simple percolation devices employing various kinds of adsorbents might be an alternative. Here, we investigated the application of leftover coal, which was collected from Ethiopian coal mining areas, as an adsorbent for the removal of phosphate from aqueous solutions in a classical slurry batch set-up. The combined effects of operational parameters such as contact time, initial concentration, and solution pH on P retention efficiency was studied employing the Response Surface Methodology (RSM). The maximum phosphate adsorption (79% removal and 198 mg kg−1 leftover coal) was obtained at a contact time of 200 min, an initial phosphate concentration of 5 mg/L, and a solution pH of 2.3. The Freundlich isotherm was fitted to the experimental data. The pseudo second-order equation describes the experimental data well, with a correlation value of R2 = 0.99. The effect of temperature on the adsorption reveals that the process is exothermic. The results demonstrate that leftover coal material could potentially be applied for the removal of phosphate from aqueous media, but additional testing in a flow-through set-up using real wastewater is required to draw definite conclusions.

Effect of electrochemical operational parameters on decolourisation of reactive red-195 using batch process

2018 ◽  
Vol 17 (2/3) ◽  
pp. 177
Author(s):  
S.B. Parith ◽  
Y.S. Chougale ◽  
N.S. Bate ◽  
A.D. Bhosale ◽  
I.V. Deshmukh ◽  
...  
Keyword(s):  
Batch Process ◽  
Operational Parameters ◽  
Reactive Red 195

Micellar-enhanced ultrafiltration (MEUF) – state of the art

2017 ◽  
Vol 3 (4) ◽  
pp. 598-624 ◽  
Author(s):  
M. Schwarze
Keyword(s):  
Aqueous Solutions ◽  
State Of The Art ◽  
Contaminant Removal ◽  
Operational Parameters ◽  
Micellar Enhanced Ultrafiltration

MEUF is a technique for contaminant removal from aqueous solutions, but its efficiency depends on a variety of operational parameters.

Removal of antibiotics from aqueous solutions by electrocatalytic degradation

2021 ◽  
Author(s):  
Vaishali Choudhary ◽  
K Vellingiri ◽  
Mohammed Iqbal Thayyil ◽  
Ligy Philip
Keyword(s):  
Adverse Effect ◽  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Electrochemical Treatment ◽  
Electrocatalytic Degradation ◽  
Treatment Technologies

The development of affordable and modular water/wastewater treatment technologies is highly desirable to counter the adverse effect of antibiotics. Electrochemical treatment, especially electrocatalysis, has a vast potential to degrade antibiotics...

scholarly journals Decolorization of Reactive Red 195 solution by electrocoagulation process

2014 ◽  
Vol 5 (1) ◽  
pp. 22-26
Author(s):  
Yuan-Shing Perng ◽  
Ha Manh Bui
Keyword(s):  
Electric Current ◽  
Reactive Dye ◽  
Sodium Sulphate ◽  
Color Removal ◽  
Iron Electrode ◽  
Electrolysis Time ◽  
Operational Parameters ◽  
Sulphate Concentration ◽  
Electrocoagulation Process ◽  
Reactive Red 195

In this study, the application of bipolar electrocoagulation (EC) with iron electrode has been assessed for color removal of simulated wastewater containing Reactive Red 195. The influence of initial pH, sodium sulphate concentration, initial dye concentration, electrolysis time, and electric current were examined. The optimum operational parameters were found to be pH =11, concentration of dye = 50 mg L-1, sodium sulphate concentration = 1200 mg L-1, electrolysis time = 5 min, and electric current = 4 A. In such condition, color removal efficiency achieved over 99%. This result indicates that EC can be used as an efficient and “green” method for color removal from reactive dye solution. Trong nghiên cứu này, quá trình khử màu nhuộm hoạt tính (Reactive Red 195) được khảo sát bằng hệ thống keo tụ điện hóa điện cực kép, với vật liệu sắt. Các yếu tố ảnh hưởng đến quá trình khử màu như pH, nồng độ màu nhuộm, nồng độ muối Na2SO4, thời gian phản ứng và cường độ dòng được lựa chọn nghiên cứu. Kết quả cho thấy hệ thống điện hóa trên loại gần như hoàn toàn màu nhuộm với hiệu suất đạt trên 99 % tại pH 11, nồng độ màu 50 mgL-1 và nống độ muối Na2SO4 1200 mgL-1 trong khoảng thời gian 5phút. Kết quả trên cho thấy keo tụ điện hóa có thể xem là một phương pháp xử lý hiệu quả và “xanh” trong việc loại bỏ hoàn toàn màu từ nước thải nhuộm hoạt tính.

Photo-Electrochemical Treatment of Disperse Blue1 Dyes in Simulated Textile Effluent: Parameter Optimization Method

2020 ◽  
Author(s):  
Kelechi Williams Festus ◽  
Ephraim chidi Ezeigbo
Keyword(s):  
Optimization Method ◽  
Electrochemical Treatment ◽  
Time Interval ◽  
Short Time Interval ◽  
Hybrid Technique ◽  
Operational Parameters ◽  
Graphite Electrodes ◽  
Effects Of Ph ◽  
Short Time ◽  
Influence Of Ph

<p>In this present study, a hybrid technique consisting of Electrochemical and UV irradiation is applied simultaneously to degrade simulated dyeing wastewater containing Disperse blue 1 dye. Several operational parameters such as the effects of pH, current intensity, temperature, initial concentration, and kinetic of the dye concentration on treatment efficiency were studied. </p> <p>The experimental results show that the decolourization rate of the wastewater is highest at low dye concentration consequent on the fact that it gave a percentage decolourization of 82.1 at a dye concentration of 25mg/L in a short time interval of 180 minutes. The influence of pH was also evaluated and the result showed higher efficiency of decolourization at alkaline PH. Similar evaluations were done for current and temperature. Finally, a comparative study was carried out to compare the efficiency of decolourization for a single electrochemical treatment, and the hybrid technique applied here. The result showed a relatively better efficiency of 89.1% for the photoelectrochemical technique compared to an88.7% for the electrochemical method. </p> <p> </p> <b> Keywords: </b>Graphite electrodes; Disperse blue1 dye; Photoelectrochemical degradation; UV-Vis Spectrophotometer

Comparison the removal of reactive red 195 dye using powder and ash of barberry stem as a low cost adsorbent from aqueous solutions: Isotherm and kinetic study

2018 ◽  
Vol 255 ◽  
pp. 572-577 ◽  
Author(s):  
Mohammad Kamranifar ◽  
Maryam Khodadadi ◽  
Vida Samiei ◽  
Bahare Dehdashti ◽  
Mohammad Noori Sepehr ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Kinetic Study ◽  
Low Cost ◽  
Reactive Red 195
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