Removal of As3+ cations from water by activated carbon, bentonite and zeolite in a batch system at different pH 

2017 ◽  
Author(s):  
Bratislav Todorovic ◽  
Bratislav Todorovic ◽  
Staniša Stojiljković ◽  
Dragan Stojiljković ◽  
Sanja Petrović ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Batch System

Optimizing Cu(II) removal from aqueous solution by magnetic nanoparticles immobilized on activated carbon using Taguchi method

2016 ◽  
Vol 74 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Mohammad Javad Ebrahimi Zarandi ◽  
Mahmoud Reza Sohrabi ◽  
Morteza Khosravi ◽  
Nafiseh Mansouriieh ◽  
Mehran Davallo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Magnetic Nanoparticles ◽  
Signal To Noise Ratio ◽  
Optimization Method ◽  
Uptake Capacity ◽  
Batch System ◽  
Removal Experiments ◽  
Main Effects ◽  
Magnetic Nanoparticles Fe3o4

This study synthesized magnetic nanoparticles (Fe3O4) immobilized on activated carbon (AC) and used them as an effective adsorbent for Cu(II) removal from aqueous solution. The effect of three parameters, including the concentration of Cu(II), dosage of Fe3O4/AC magnetic nanocomposite and pH on the removal of Cu(II) using Fe3O4/AC nanocomposite were studied. In order to examine and describe the optimum condition for each of the mentioned parameters, Taguchi's optimization method was used in a batch system and L9 orthogonal array was used for the experimental design. The removal percentage (R%) of Cu(II) and uptake capacity (q) were transformed into an accurate signal-to-noise ratio (S/N) for a ‘larger-the-better’ response. Taguchi results, which were analyzed based on choosing the best run by examining the S/N, were statistically tested using analysis of variance; the tests showed that all the parameters’ main effects were significant within a 95% confidence level. The best conditions for removal of Cu(II) were determined at pH of 7, nanocomposite dosage of 0.1 gL−1 and initial Cu(II) concentration of 20 mg L−1 at constant temperature of 25 °C. Generally, the results showed that the simple Taguchi's method is suitable to optimize the Cu(II) removal experiments.

scholarly journals Atrazine removal in aqueous solutions using activated carbon from peach stone

2020 ◽  
Vol 15 (3) ◽  
pp. 1
Author(s):  
Ana Paula Staben Pruchniak ◽  
Graziella Dos Santos Portes Silva ◽  
Liliane Schier de Lima ◽  
Sueli Pércio Quináia
Keyword(s):  
Activated Carbon ◽  
Low Cost ◽  
Good Choice ◽  
Pesticide Contamination ◽  
Batch System ◽  
Atrazine Concentration ◽  
Cost Of Energy ◽  
Adsorption Processes ◽  
Characterization Studies ◽  
Industrial Tailings

 Activated carbon is commonly used as a material for contaminant-adsorption processes in aqueous systems. However, its use is more restricted to charcoal than to coal, for the most part, in view of the fact of the higher cost (~ 40%) if the mineral is a fossil fuel which needs to be extracted from the earth by mining. For this reason, the peach stone that comes from alimentary industrial tailings can be a good choice for the separation of pollutants from aqueous suspensions and other soluble substances. The purpose of this research was the development of a low-cost filter, using stones to remove atrazine from water. Appraisal and characterization studies were performed along with batch experiments to investigate dosing effects of the activated carbon, atrazine concentration, contact time, and adsorption pH on removal procedures. From the results of the experiment, an excellent removal of the analyte in question was observed under conditions that can be considered as close as possible to the environment, such as pH = 6.5, room temperature and 10 minutes of agitation time, always choosing the best alternative with the lowest cost of energy and time. Batch system application has been recommended as versatile for utilization in seasonal problems such as pesticide contamination.

scholarly journals Pemanfaatan Karbon Baggase Teraktivasi Untuk Menurunkan Kadar Logam Tembaga Pada Limbah Kerajinan Perak Di Lombok Tengah

2019 ◽  
Vol 6 (1) ◽  
pp. 65
Author(s):  
Dahlia Rosma Indah ◽  
Safnowandi Safnowandi
Keyword(s):  
Carbon Dioxide ◽  
Activated Carbon ◽  
Contact Time ◽  
Metal Content ◽  
Heating Temperature ◽  
Copper Metal ◽  
Batch System ◽  
Surrounding Environment ◽  
Ferrous Metals ◽  
Metal Levels

Copper metal levels in silver craft waste can cause health problems in humansand pollute the surrounding environment. One method of processing wastewateris the adsorption technique using activated carbon dioxide. The first step is tofirst determine the copper metal content in silver handicraft waste in UnggaVillage, Central Lombok. Furthermore, the waste water is contacted withactivated carbon. The production of activated bagasse carbon consists of threestages, namely first dehydration by burning bagasse until it turns into carbon,second carbonation which is heating temperature of 500ºC, carbon yields of 100-200 mesh and third, activation by immersing 50 grams of carbon in 500 mL 15%NaOH during 12 hours. After that the carbon is dried at 110ºC and finally heatedat 500ºC for 1 hour. The bagasse carbon that has been made is put into 25 mL ofwaste water sample with a mass of 2 grams of adsorbent. The sample is thenstirred at various contact times of 30, 60, 90, 120 and 150 minutes at a speed of180 rpm using a batch system. The optimum contact time and concentration areused to calculate the efficiency of decreasing copper metal content by calculatingthe difference in copper metal content before adsorption and after adsorptionusing activated carbon dioxide. The concentration of all Cu (II) metals wasanalyzed using Atomic Absorption Spectrophotometer (AAS). From the researchit was found that the copper metal content in the sample was 14.5710 ppm. Theoptimum contact time for copper metal adsorption is at 120 minutes contact timewhich results in optimum adsorption efficiency in ferrous metals, namely84.88%.

scholarly journals Efektivitas Komposit Material Overburden Batubara, Zeolit, dan Arang Aktif Tempurung Kelapa Sebagai Adsorben Besi dalam Air Asam Tambang

2021 ◽  
Vol 1 (1) ◽  
pp. 28-35
Author(s):  
Mycelia Paradise ◽  
Edy Nursanto ◽  
Nurkhamim Nurkhamim
Keyword(s):  
Activated Carbon ◽  
Acid Mine Drainage ◽  
Surface Area ◽  
Contact Time ◽  
Mine Drainage ◽  
Coconut Shell ◽  
Hot Plate ◽  
Iron Metal ◽  
Batch System ◽  
Shell Composite

Abstrak: Penelitian ini mempelajari penyerapan Fe dari air asam tambang yang berasal dari lokasi penambangan batubara. Adsorben yang digunakan dalam penelitian ini yaitu kombinasi antara claystone, zeolit, dan arang aktif tempurung kelapa. Adsorben tersebut harus diaktivasi terlebih dahulu untuk membersihkan pengotor di permukaannya sehingga luas permukaannya meningkat. Aktivasi claystone dilakukan dengan 3M NaOH, zeolit dengan 3M HCl, dan arang tempurung kelapa dengan 4M HCl. Komposit dibuat dengan mencampurkan ketiga adsorben dengan  perbandingan (Claystone[C]: Zeolit[Z]: Arang aktif[A]) = 25:25:50. Hasil uji luas permukaan menunjukkan bahwa komposit memiliki luas permukaan 62,44 m2/g. Adsorpsi dilakukan dengan sistem batch menggunakan alat hot plate stirer pada variasi waktu kontak 30, 60, 90, 120, dan 150 menit. Berdasarkan hasil uji adsorpsi,  7,5 gram komposit  mampu menurunkan konsentrasi Fe dengan efektivitas 99,61%  dan kapasitas adsorpsi 0,432 mg/g pada waktu kontak 30 menit.  Kata Kunci: adsorpsi, komposit, efektivitas, kapasitas Abstract: This research studied adsorption iron (Fe) from acid mine drainage in coal mining. Adsorbent used in this research is the combination of activated claystone, activated zeolite, and ativated carbon from coconut shell. The adsorbents need to be activated to remove the impurities from its surface and improved its surface area. Claystone was activated using 3M NaOH, 3M HCl for zeolite, and 4M HCl for coconut shell. Composite was made by mixing claystone, zeolite, and coconut shell with 3 ratio (claystone [C], zeolite [Z], activated carbon [A]) = 25:25:50. The result of surface area analyzer showed that the surface area of composite was 62,44 m2/g. Adsorption with batch system was carried out using hot plate stirer on 30,60, 90, 120, and 150 minutes of contact time. Adsorption result showed that 7,5 gram of composite succeded decreasing iron metal concentration with 99,61%  effectiveness and 0,432 mg/g adsorption capacity on 30 minutes of contact time. Keywords: adsorption, composite, efectiveness, capacity

Adsorption of Methyl Violet Dye from Aqueous Solutions by Activated Carbon Produced from Tamarind Seeds

2014 ◽  
Vol 911 ◽  
pp. 326-330 ◽  
Author(s):  
Piaw Phatai ◽  
Jutharatana Klinkaewnarong ◽  
Surachai Yaiyen
Keyword(s):  
Activated Carbon ◽  
Contact Time ◽  
Copper Ions ◽  
Binary Solution ◽  
Methyl Violet ◽  
Solution System ◽  
Solution Ph ◽  
Batch System ◽  
Adsorption Data ◽  
Adsorbent Dose

The present work proposes the adsorption of methyl violet (MV) from two solution systems including single MV and binary MV-Cu2+systems by activated carbon (AC) prepared from tamarind seeds in a batch system. Parameters including contact time, solution pH, adsorbent dose, and initial dye concentration were studied. The morphology of the AC was determined by scanning electron microscopy (SEM). The results showed the maximum adsorption of MV dye onto the AC at a contact time of 60 min, solution pH of 9.0 and adsorbent dose of 0.2 and 0.5 g for the single and binary solution systems, respectively. The presence of copper ions in binary solution system decreased the adsorption efficiency of MV dye onto the AC. The equilibrium adsorption data were analyzed using Langmuir, Freundlich and Temkin isotherms.

scholarly journals ADSORPTION OF HYDROXY SUBSTITUTED PHENOLS ON F-300 ACTIVATED CARBON IN BATCH SYSTEM

2014 ◽  
Author(s):  
N. T. Khaty A. B. Bhake M. P.Joshi S. G. Rawat P. N N. T. Khaty A. B. Bhake M. P.Joshi S. G. Rawat P. N ◽  
Keyword(s):  
Activated Carbon ◽  
Substituted Phenols ◽  
Batch System

scholarly journals Bleaching of Neutral Cotton Seed Oil Using Organic Activated Carbon in a Batch System: Kinetics and Adsorption Isotherms

Processes ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 22 ◽  
Author(s):  
Abba Chetima ◽  
Abdoul Wahabou ◽  
Gaston Zomegni ◽  
Abdoul Ntieche Rahman ◽  
Divine Bup Nde
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherms ◽  
Cotton Seed ◽  
Seed Oil ◽  
Batch System ◽  
Cotton Seed Oil

Removal of organic substances from water by ozone treatment followed by biological activated carbon treatment

1997 ◽  
Vol 35 (7) ◽  
pp. 171-178 ◽  
Author(s):  
Yasushi Takeuchi ◽  
Kazuhiro Mochidzuki ◽  
Noriyuki Matsunobu ◽  
Ryozo Kojima ◽  
Hiroshi Motohashi ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Activated Carbon ◽  
Ozone Treatment ◽  
Organic Substances ◽  
Raw Water ◽  
Biological Activated Carbon ◽  
Batch System ◽  
Flow Test ◽  
Before And After ◽  
Carbon Treatment

As an advanced water treatment, a combination of ozonation and biological activated carbon (BAC, hereafter) treatment is being applied to purify raw water for municipal use in some cases. The authors examined effects of ozonation on water quality in a batch system, using water samples containing organic substances fractionated to several molecular weight ranges. Also, a flow test of laboratory-scale was performed to study on the capability of the treatment in terms of removal efficiency of the dissolved organic substances, e.g., fumic substances, which preoxidized with ozone. As a result, the changes in equilibrium adsorption and in the biodegradability of organic substances dissolved in water before and after oxidation with ozone were made clear.

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