scholarly journals Adsorption of Ni (II) from Wastewater using Low Cost Activated Carbon Prepared from Prosopis Juliflora- A Kinetics and Equilibrium Studies

2014 ◽  
Keyword(s):  
Activated Carbon ◽  
Low Cost ◽  
Prosopis Juliflora ◽  
Equilibrium Studies

scholarly journals Methylene blue removal using a low-cost activated carbon adsorbent from tobacco stems: kinetic and equilibrium studies

2017 ◽  
Vol 75 (10) ◽  
pp. 2390-2402 ◽  
Author(s):  
Bellington Mudyawabikwa ◽  
Henry H. Mungondori ◽  
Lilian Tichagwa ◽  
David M. Katwire
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Radiation Power ◽  
Low Cost ◽  
Carbon Adsorbent ◽  
Point Of Zero Charge ◽  
Order Kinetic ◽  
Optimum Conditions ◽  
Equilibrium Studies ◽  
Mb Adsorption

The aim of this study was to prepare activated carbon from tobacco stalks using microwave heating. The prepared activated carbon was applied as an adsorbent in methylene blue (MB) removal from water. The optimum conditions for activated carbon preparation were a radiation power of 280 W for a period of 6 minutes after the impregnation of the precursor material with 30% ZnCl2 for 24 hours. The activated carbon yield and iodine number were 49.43% and 1,264.51 mg/g respectively. The activated carbon also had a point of zero charge of 5.81 with an adsorption capacity of 123.45 mg/g for MB. The optimum conditions for MB adsorption were a pH of 6.5 with an adsorbent dosage of 0.2 g/50 mL at 25 °C. The MB adsorption kinetics followed the pseudo second order kinetic model with the intra-particle diffusion model suggesting a two-step adsorption mechanism. The adsorption data also fitted well within the Langmuir adsorption isotherm model. Tobacco stalks can successfully be turned into an economically important product.

Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions

2016 ◽  
Vol 73 (11) ◽  
pp. 2713-2721 ◽  
Author(s):  
Guilherme Luiz Dotto ◽  
Lucas Meili ◽  
Ana Karla de Souza Abud ◽  
Eduardo Hiromitsu Tanabe ◽  
Daniel Assumpção Bertuol ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Low Cost ◽  
Orange Peel ◽  
Point Of Zero Charge ◽  
Equilibrium Studies ◽  
Factors Affecting ◽  
Op Amp ◽  
Batch Tests ◽  
Pineapple Peel ◽  
Equilibrium Data

This research was performed to find an alternative, low-cost, competitive, locally available and efficient adsorbent to treat nickel (Ni) containing effluents. For this purpose, several Brazilian agro-wastes like sugarcane bagasse (SCB), passion fruit wastes (PFW), orange peel (OP) and pineapple peel (PP) were compared with an activated carbon (AC). The adsorbents were characterized. Effects of fundamental factors affecting the adsorption were investigated using batch tests. Kinetic and equilibrium studies were performed using conventional models. It was verified that the adsorption was favored at pH of 6.0 for all agro-wastes, being dependent of the Ni speciation, point of zero charge and surface area of the adsorbents. The Ni removal percentage was in the following order: SCB > OP > AC > PFW > PP. From the kinetic viewpoint, the Elovich model was appropriate to fit the Ni adsorption onto SCB, while for the other adsorbents, the pseudo-first-order model was the most suitable. For all adsorbents, the Langmuir model was the more adequate to represent the equilibrium data, being the maximum adsorption capacities of 64.1 mg g−1, 60.7 mg g−1, 63.1 mg g−1, 48.1 mg g−1 and 64.3 mg g−1 for SCB, PFW, OP, PP and AC, respectively. These results indicated that mainly SCB and OP can be used as alternative adsorbents to treat Ni containing effluents.

scholarly journals Treatment of Carwash Waste Water and Its Reuse to Manage Water Supply

2020 ◽  
Vol 8 (5) ◽  
pp. 3605-3610
Keyword(s):  
Waste Water ◽  
Activated Carbon ◽  
Water Supply ◽  
Low Cost ◽  
Prosopis Juliflora ◽  
Wash Water ◽  
Cotton Cloth ◽  
Oil And Grease ◽  
Adsorption Method ◽  
Two Samples

The current problem to water supply is the contamination of water resources by pollution. water pollution generally known to be caused by Domestic and Industries there are also some more Auxiliary units which producing more waste water which is not perceived yet as a cause of waste water . In that Car wash waste water is the major producer of waste water which is let untreated in to water bodies. Transportation of people now uses mostly personal vehicle which leads to increase of more number of individual transport mode. In that particularly usage of car as well as its maintenance leading to create more waste wash water and also utilizing more volume of water for that purpose impact the environmental water balance in many ways as the conventional treatment of waste water costing more they are not think about treatment, So in this work the two samples was collected, and initial characterization was done and it was treated by Adsorption method with different Adsorbent which could be prepared from low cost and easily available material. For this work Prosopis juliflora leaves (AD1)and Casuarina equisetifolia (AD2) leaves were used as adsorbent and waste cotton cloth(AC1) which is cellulosic fiber rich in carbon content was used to prepare Activated carbon The treated water was found to be in excellent reduction level of various pollutant level as follows, the level of TSS showed 94.5% &BOD 95.4% ,COD 96.6% was reduced for the sample 1 . The pollutant due to the usage of detergent, that is the Methylene blue Anionic substances level also reduced from 1.8 mg/lit to 0.2 mg/lit of about 88.89%by prepared activated carbon(AD1).and very good reduction level of Oil and Grease was resulted by AD1,AD2,AC2 99.5%, 98.7%, 99.1% It is evident from the result that the waste cloth material and the un wanted growth of Prosopis juliflora which has been insisted to cut down of save underground water could be used in another way for treating waste water and and to solve the problem of water management and supply.

scholarly journals Equilibrium Studies for Removal of Cadmium (II) Ions Removal from Water Using Activated Carbon Derived from Macadamia Intergrifolia Nutshell Waste Powder

2020 ◽  
pp. 185-197
Author(s):  
Amos Kamau ◽  
George Thiong’o ◽  
Beatrice Kakoi
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Metal Ions ◽  
Water Adsorption ◽  
Functional Group ◽  
Low Cost ◽  
Langmuir Model ◽  
Equilibrium Studies ◽  
Freundlich Model ◽  
Favorable Reaction

Heavy metals have continued to be of great concern in research as major pollutants of water. Adsorption using low cost adsorbent is a low cost method of the removal heavy metal ions from aqueous solution. In this study activated carbon derived from macadamia intergrifolia nutshell powder was considered as an alternative low cost adsorbent for the removal of Cd(II) ions from aqueous solution. Various physicochemical parameters which included sorbent mass, and initial metal ions concentration isotherms using sorption models were determined. Results from the experiment indicated the optimum values for sorbent mass as 0.3 grams, and initial metal ions concentration as 8mg/l. Adsorption isotherms were found to fit well in Langmuir model (R2=0.9935), Javanovic model (R2 =0.9857) and Freundlich model (R2=0.9911). Additionally, for Langmuir model the value of separation factor (KL) was in the range of 0 to 1 indicating a favorable reaction. For Jovanovic model adsorption energy was found to be 1.00334 l/mg thus an indication of binding vibrations during Cd(II) ions adsorption.  FTIR spectrum revealed that the presence of O-H at νmax 3389 cm-1, COO- at νmax 2367 cm-1, C=0 at νmax 1593 cm-1,  C-O at νmax 1344 cm-1, P-O at νmax 1206 cm-1 and POO-H at νmax 1110cm-1 functional group in activated carbon enhanced Cd(II) ions removal.  The study revealed that activated carbon derived from macadamia intergrifolia nutshell can be used to remove Cd(II) ions from water. 

REMOVAL OF ACID BLACK DYE BY PUMICE STONE AS A LOW COST ADSORBENT: KINETIC, THERMODYNAMIC AND EQUILIBRIUM STUDIES

2013 ◽  
Vol 12 (11) ◽  
pp. 2137-2147 ◽  
Author(s):  
Mohammad Noori Sepehr ◽  
Mohammad Reza Samarghandi ◽  
Mansur Zarrabi ◽  
Abdeltif Amrane ◽  
Mohammad Mahdi Soori
Keyword(s):  
Low Cost ◽  
Equilibrium Studies ◽  
Pumice Stone

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

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