Simultaneous removal of methylene blue and Pb2+ ions using ruthenium nanoparticle-loaded activated carbon: response surface methodology

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83427-83435 ◽  
Author(s):  
H. Mazaheri ◽  
M. Ghaedi ◽  
S. Hajati ◽  
K. Dashtian ◽  
M. K. Purkait
Keyword(s):  
Methylene Blue ◽  
Response Surface Methodology ◽  
Activated Carbon ◽  
Response Surface ◽  
High Yield ◽  
Simultaneous Removal ◽  
Ruthenium Nanoparticles ◽  
Green Approach

Ruthenium nanoparticles were synthesized in a green approach with high yield in the presence of ultrasound and then the product was loaded on activated carbon.

Simultaneous Removal of Organic and Inorganic Pollutants From Landfill Leachate Using Sea Mango Derived Activated Carbon via Microwave Induced Activation

2016 ◽  
Vol 14 (5) ◽  
pp. 991-1001 ◽  
Author(s):  
Areeb Shehzad ◽  
Mohammed J.K. Bashir ◽  
Sumathi Sethupathi ◽  
Jun-Wei Lim
Keyword(s):  
Response Surface Methodology ◽  
Activated Carbon ◽  
Response Surface ◽  
Landfill Leachate ◽  
Inorganic Compounds ◽  
Chemical Properties ◽  
Koh Activation ◽  
Simultaneous Removal ◽  
Inorganic Pollutants ◽  
Adsorptive Removal

Abstract The present work reveals the preparation and optimization of sea mango based activated carbon (SMAC) by microwave induced KOH activation for the adsorptive removal of organic and inorganic contaminants from the mature anaerobic landfill leachate using response surface methodology (RSM) technique. Chemical oxygen demand (COD) and ammoniacal nitrogen (NH3-N) are the main indicators for organic and inorganic compounds often found in aged landfill leachate. Hence, the treatment of this stabilized landfill leachate is considered to be an essential step prior to its discharge. The leachate sample was collected from Sahom Landfill site in Perak, Malaysia and the initial concentrations of COD and NH3-N were measured as 550 mg/L and 3,330 mg/L, respectively. The feasibility of converting Sea mango to activated carbon process to remove the COD and NH3-N pollutants from landfill leachate was investigated. The preparation conditions such as microwave heating at power range (350–600 W), impregnation of AC with KOH (0.5–3.0) and retention time (6–10 min) were evaluated, analyzed and optimized using response surface methodology (RSM). From the analysis of variance (ANOVA), the optimum conditions for preparation of SMAC was at 560 W of activation power, 8.4 min of activation time and 2.10 of impregnation ratios with higher adsorptive removal of COD (72.50 %), and NH3-N (79.77 %), respectively. The physical and chemical properties of SMAC were evaluated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and surface area. The findings exemplified the applicability of SMAC as an effective precursor for the simultaneous removal of organic and inorganic pollutants from mature landfill leachate.

scholarly journals Response Surface Methodology Optimization of Methylene Blue Removal by Activated Carbon Derived from Foxtail Palm Tree Empty Fruit Bunch

2021 ◽  
Vol 4 (1) ◽  
pp. 25-30
Author(s):  
Farah Amni Daud ◽  
Norhisyam Ismail ◽  
Rozidaini Mohd Ghazi
Keyword(s):  
Methylene Blue ◽  
Response Surface Methodology ◽  
Activated Carbon ◽  
Response Surface ◽  
Contact Time ◽  
Palm Tree ◽  
Empty Fruit Bunch ◽  
Operating Variables ◽  
Methylene Blue Removal ◽  
Good Potential

The release of dyes in form of wastewater causes serious environmental problems such as retards photosynthesis, inhibit growth of aquatic biota by blocking out sunlight and utilizing dissolved oxygen. In this study, activated carbon derived from foxtail palm (Wodyetia bifurcata) empty fruit bunch (EFB) was used as an adsorbent to remove methylene blue in aqueous solution. The preparation process of activated carbon consisted of H2SO4 impregnation followed by carbonization at 300ºC for 24 hours. The optimization adsorption process was carried out using Response Surface Methodology (RSM) via Box-Behnken design. Three important operating variables namely dye concentration, contact time and adsorbent dosage were studied. The optimum conditions obtained were 100 ppm of methylene blue, 13 h of contact time and 2 g of activated carbon with the highest percentage of methylene blue removal of 99.9%. Based on the study, activated carbon derived from foxtail palm EFB showed good potential as an adsorbing agent.

scholarly journals Enhancing the Decolorization of Methylene Blue Using a Low-Cost Super-Absorbent Aided by Response Surface Methodology

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4430
Author(s):  
Nor Hakimin Abdullah ◽  
Mazlan Mohamed ◽  
Norshahidatul Akmar Mohd Shohaimi ◽  
Azwan Mat Lazim ◽  
Ahmad Zamani Abdul Halim ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Response Surface Methodology ◽  
Activated Carbon ◽  
Response Surface ◽  
Oil Palm ◽  
Contact Time ◽  
Low Cost ◽  
Aqueous Media ◽  
Adsorbent Dosage ◽  
Oil Palm Trunk

The presence of organic dyes from industrial wastewater can cause pollution and exacerbate environmental problems; therefore, in the present work, activated carbon was synthesized from locally available oil palm trunk (OPT) biomass as a low-cost adsorbent to remove synthetic dye from aqueous media. The physical properties of the synthesized oil palm trunk activated carbon (OPTAC) were analyzed by SEM, FTIR-ATR, and XRD. The concurrent effects of the process variables (adsorbent dosage (g), methylene blue (MB) concentration (mg/L), and contact time (h)) on the MB removal percentage from aqueous solution were studied using a three-factor three-level Box–Behnken design (BBD) of response surface methodology (RSM), followed by the optimization of MB adsorption using OPTAC as the adsorbent. Based on the results of the analysis of variance (ANOVA) for the three parameters considered, adsorbent dosage (X1) is the most crucial parameter, with an F-value of 1857.43, followed by MB concentration (X2) and contact time (X3) with the F-values of 95.60 and 29.48, respectively. Furthermore, the highest MB removal efficiency of 97.9% was achieved at the optimum X1, X2, and X3 of 1.5 g, 200 mg/L, and 2 h, respectively.

Optimization of the process parameters for the adsorption of ternary dyes by Ni doped FeO(OH)-NWs–AC using response surface methodology and an artificial neural network

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 19768-19779 ◽  
Author(s):  
Farshid Nasiri Azad ◽  
Mehrorang Ghaedi ◽  
Arash Asfaram ◽  
Arsalan Jamshidi ◽  
Ghasem Hassani ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Response Surface Methodology ◽  
Activated Carbon ◽  
Response Surface ◽  
Process Parameters ◽  
Rhodamine B ◽  
Simultaneous Removal ◽  
Ferric Oxyhydroxide ◽  
Artificial Neural

The present study deals with the simultaneous removal of chrysoidine G (CG), rhodamine B (RB) and disulfine blue (DB) by Ni doped ferric oxyhydroxide FeO(OH) nanowires on activated carbon (Ni doped FeO(OH)-NWs–AC).

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