Adsorption of Copper(II) Ions onto Hazelnut Shell and Apricot Stone Activated Carbons

Kinetic models describing the adsorption of Ni(II) ions on to hazelnut shell active carbon (HSAC) have been compared. Kinetic studies have also been carried out in a batch adsorber over a range of initial metal ion concentration (11.87–92.34 mg/dm3), agitation speed (50–200 rpm) and adsorbent particle size (0.90–1.60 mm). The rate models evaluated included the pseudo-first order equation, the pseudo-second order equation and the Elovich equation. The results obtained showed that the pseudo-second order kinetic model correlated the experimental data well and better than the other models examined in this study.

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Investigation of the Changes in Surface Area and FT-IR Spectra of Activated Carbons Obtained from Hazelnut Shells by Physicochemical Treatment Methods

Journal of Chemistry ◽

10.1155/2015/651651 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 6

Author(s):

Aziz Şencan ◽

Mehmet Kılıç

Keyword(s):

Surface Area ◽

Activated Carbons ◽

Microwave Treatment ◽

Chemical Agent ◽

Physicochemical Treatment ◽

Treatment Methods ◽

Hazelnut Shell ◽

Ft Ir ◽

The Fourier Transform ◽

Hazelnut Shells

In this study, raw hazelnut shells were used to obtain charcoal by pyrolysis at 250°C. The obtained material was subjected to physical, chemical, and physicochemical treatment methods to obtain activated carbons (ACs). Effect of the treatment procedures was determined by measuring the surface area of the produced ACs. In addition, changes in the functional groups of the obtained ACs during these treatments were determined with the Fourier transform infrared spectroscopy (FT-IR). To determine the most effective chemical agent, the charcoal samples were examined for Pb(II) adsorption from aqueous solutions under different pH conditions of 4 to 6. According to the results, the most effective chemical agent was determined as Ca(OCl)2. Effect of microwave and ultrasound treatments was also examined during Pb(II) adsorption by the chemically treated AC. The results showed that chemical treatment with Ca(OCl)2, microwave treatment for 5 minutes, ultrasound treatment for 20 minutes, and pyrolysis at 700°C together were the most suitable combination enhancing the surface area of the adsorbent. This combination increased the surface area and the adsorption capacity of the adsorbent by 202 and 4.76 times, respectively, when compared to those of the raw hazelnut shell.

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Suitability of Various Indigenously Prepared Activated Carbons for the Adsorption of Mercury(II) Ions

Toxicological and Environmental Chemistry ◽

10.1080/02772240309816 ◽

2003 ◽

Vol 84 (1-4) ◽

pp. 7-19 ◽

Cited By ~ 4

Author(s):

Nagarethinam Kannan ◽

Ananthakrishnan Rajakumar

Keyword(s):

Activated Carbons

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Desorption and Reutilization Studies of Copper and Lead Lons by Activated Carbons Prepared from Ulva Fasciata sp

International Journal of Scientific Research ◽

10.15373/22778179/june2013/20 ◽

2012 ◽

Vol 2 (6) ◽

pp. 60-63

Author(s):

R. P. Suresh Jeyakumar ◽

◽

Dr. V. Chandrasekaran Dr. V. Chandrasekaran

Keyword(s):

Activated Carbons ◽

Ulva Fasciata

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PEMANFAATAN KULIT KAYU GEMOR (Alseodaphne sp.) DAN CANGKANG KEMIRI (Aleurites molucca) UNTUK OBAT NYAMUK ALAMI

Jurnal Riset Industri Hasil Hutan ◽

10.24111/jrihh.v3i2.1190 ◽

2011 ◽

Vol 3 (2) ◽

pp. 13

Author(s):

Budi Tri Cahyana ◽

Andri Taruna Rachmadi

Keyword(s):

Human Health ◽

Chemical Compound ◽

Variance Analysis ◽

Force Analysis ◽

Mosquito Coil ◽

Research Product ◽

Economic View ◽

Hazelnut Shell ◽

Random Variance ◽

Main Material

Blood fever and Chikungunya cases in Indonesia are increasing annually. For preventing the mosquios, people use mosquito coil which is contain dangerous chemical compound. This research has successly created a natural mosquito coil with gemor bark and hazelnut fruit shell as the main material. Gemor bark is positive containing alcaloid,tanin, phenolk, flvonoid, triterpnoid and glycocydic compounds which are natural bioinsecticide. As formulation the comparison of gemor bark and hazelnut shell as follow :100% : 0 % ; 80 % : 20 % ; 65 % : 35 % ; 50 % : 50 % ; 35 % : 65% and 20 % : 80% were used. Base one random variance analysis, the best formula was the using of gemor bark in 50%, 35% and 20% of concentration. The mosquitos killing force analysis was using the LT50 for 6 days with 5 diferent concentrations. The result showed that 50 % of gemor bark was significantly influenced in the killing force. From the economic view, the producion of this coil was cheaper then the same product in the maket. Base on all the result, the research product is applicable in mass producion and safe for human health and the environment.Keywords: gemor bark , hazelnut fruit shell , mosquito coil, natural , ecofriendly

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Confining H2 and D2 by adsorption in microporous carbons (single-wall carbon nanotubes and activated carbons) doped by K or Li

European Journal of Control ◽

10.3166/acsm.30.393-400 ◽

2005 ◽

Vol 30 (4) ◽

pp. 393-400 ◽

Cited By ~ 2

Author(s):

Szymon Los ◽

Philippe Azais ◽

Roland JM Pellenq ◽

Yannick Breton ◽

Olivier Isnard ◽

...

Keyword(s):

Carbon Nanotubes ◽

Activated Carbons ◽

Single Wall Carbon Nanotubes ◽

Single Wall Carbon ◽

Microporous Carbons

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Use of activated carbon to remove undesirable residual amylase from refinery streams

Sugar Industry ◽

10.36961/si18170 ◽

2017 ◽

pp. 96-103 ◽

Cited By ~ 1

Author(s):

Gillian Eggleston ◽

Isabel Lima ◽

Emmanuel Sarir ◽

Jack Thompson ◽

John Zatlokovicz ◽

...

Keyword(s):

Activated Carbon ◽

High Temperature ◽

High Performance ◽

Activated Carbons ◽

Amylase Activity ◽

Sugar Industry ◽

End User ◽

Customer Complaints ◽

Carry Over ◽

Very High

In recent years, there has been increased world-wide concern over residual (carry-over) activity of mostly high temperature (HT) and very high temperature (VHT) stable amylases in white, refined sugars from refineries to various food and end-user industries. HT and VHT stable amylases were developed for much larger markets than the sugar industry with harsher processing conditions. There is an urgent need in the sugar industry to be able to remove or inactivate residual, active amylases either in factory or refinery streams or both. A survey of refineries that used amylase and had activated carbon systems for decolorizing, revealed they did not have any customer complaints for residual amylase. The use of high performance activated carbons to remove residual amylase activity was investigated using a Phadebas® method created for the sugar industry to measure residual amylase in syrups. Ability to remove residual amylase protein was dependent on the surface area of the powdered activated carbons as well as mixing (retention) time. The activated carbon also had the additional benefit of removing color and insoluble starch.

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