Activated Carbon Research Papers - Academia.edu (original) (raw)

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- Multidisciplinary, Activated Carbon
- by Alfredo Gordon
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- Kinetics, Activated Carbon, Thermal, Thermal Analysis
- by Moshe Sheintuch
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- Engineering, Environmental Science, Energy Conservation, Water Treatment
- by Krystyna Konieczny
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- Engineering, Water Treatment, Activated Carbon, Desalination
- by Christian Roy
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- Engineering, Pyrolysis, Activated Carbon, CHEMICAL SCIENCES
- by Pedram Fatehi
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- Multidisciplinary, Adsorption, Activated Carbon, Charcoal

Production of biodiesel from natural oils and fats can be achieved using various technologies briefly discussed in this review. A particular appealing concept for production of green diesel is selective catalytic deoxygenation of renewables leading to diesel fuel products. This reaction can be performed over Pd on active carbon supports with saturated and unsaturated fatty acids and their derivatives. Key wordsbiodiesel–green diesel–deoxygenation–fatty acids

- by Jukka Myllyoja
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- Biodiesel, Activated Carbon, Diesel Fuel
- by Tuula Tuhkanen
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- Environmental Science, Performance, Filtration, Water Pollution
- by Michael Herbst
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- Earth Sciences, Time Series, Differential Evolution, Activated Carbon
- by Seizo Miyata and +1
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- Engineering, X ray absorption spectroscopy, Doping, Activated Carbon
- by Kirti V . Dubey
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- Engineering, Technology, Ultrafiltration, Adsorption
- by Chantaraporn Phalakornkule
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- Carbon Dioxide, Carbon, Environmental Management, Multidisciplinary
- by Luiz Oliveira
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- Engineering, Carbon, Activated Carbon, Physical sciences
- by Angela Lindner
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- Biochemistry, Physiology, Water, Water Purification
- by Costas Pelekani
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- Engineering, Kinetics, Carbon, Activated Carbon
- by José Rodríguez-Mirasol and +1
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- Engineering, Thermodynamics, Kinetics, Activated Carbon
- by Diana Azevedo
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- Engineering, Activated Carbon, CHEMICAL SCIENCES, Energy and Fuels

Wastewater reuse has been attracted a lot of attention in recent years especially in places with low water availability. The effluents that were considered to be discharged are now could be used as potential sources of reusable water. In this study, variables affecting the removal of ethylene glycol (EG) by adsorption on granular activated carbon (GAC) from the synthetic wastewater solutions were optimized by response surface methodology (RSM) using a central composite design. The investigated factors were temperature, EG concentration, contact time, activated carbon amount and granular size. Adsorption kinetic was also studied and an acceptable correlation between Langmuir model and experimental data was observed. As a result, a modified third degree equation was proposed and used to find the optimized condition. The maximum adsorption was achieved at 27.7 oC with 0.8 g of 20-30 mesh activated carbons for an EG feed concentration of 135 mg/L at 210 minutes.

- by Behnaz Jalili
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- Materials Science, Chemistry, Response Surface Methodology, Adsorption
- by Rajeev Jain
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- Engineering, Thermodynamics, Kinetics, Modeling
- by Mohamed Ashri
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- Leadership, Carbon, Water Purification, Carbon Nanotubes
- by jale yanik
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- Engineering, Activated Carbon, Polyethylene, CHEMICAL SCIENCES
- by John Smith
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- Chemical Engineering, Analytical Chemistry, Mass Transfer, Kinetics
- by Carlos Costa
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- Engineering, High Pressure, Carbon, Activated Carbon
- by Guillermo Gonzalez
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- Engineering, Chemistry, Arsenic, Nuclear Chemistry

In this work, the adsorption of chromium(VI) was studied on activated carbon prepared from Tamarind wood with zinc chloride activation. Adsorption studies were conducted in the range of 10–50mg/l initial chromium(VI) concentration and at temperature in the range of 10–50°C. The experimental data were analyzed by the Freundlich isotherm and the Langmuir isotherm. Equilibrium data fitted well with the Langmuir

- by Jyotikusum Acharya
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- Chemical Engineering, Mass Transfer, Kinetics, Wastewater Treatment
- by Wenzong Liu
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- Engineering, Activated Carbon, Hydrogen Energy, CHEMICAL SCIENCES
- by Päivi Mäki-Arvela
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- Chemical Engineering, Activated Carbon, Nickel
- by cesar nieto
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- Engineering, Chemistry, Industrial Organization, Technology
- by Leonard Vasiliev
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- Engineering, Hydrogen Storage, Activated Carbon, Hydrogen Energy
- by Cristian Contescu and +1
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- Hydrogen Storage, Activated Carbon, Room Temperature, Carbon Fiber
- by Dirce Silveira Silveira
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- Industrial Biotechnology, Adsorption, Activated Carbon, vitamin C
- by Roberto Narbaitz
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- Water, Regeneration, Sensitivity Analysis, Multidisciplinary

Palm kernel shell (PKS), representing an abundantly available oil palm waste in Malaysia, was transformed into activated carbon by microwave vacuum pyrolysis. PKS was first carbonized to produce biochar, followed by an activation process with chemical or water to produce chemically and physically activated carbon, respectively. The activated carbon materials were characterized for their porous characteristics and elemental and proximate composition to examine their suitability as catalyst support. Catalysts were synthesized by supporting nickel on the activated carbon materials and tested for their performance in the methane dry reforming reaction. Microwave vacuum pyrolysis of PKS-derived char resulted in up to 89 wt% yield of activated carbon. The
activated carbon was detected to have high Brunauer–Emmett–Teller (BET) surface area associated with a highly porous surface, characteristics of high adsorption capacity corresponding to many sites for adsorption of metal atoms with great potential for use as catalyst support material. Nickel atoms were detected on the surface of the activated carbon catalyst support, indicating successful synthesis of nickel-supported catalyst. The catalysts showed high methane conversion (up to 43 %), producing approximately 22 % gaseous products (CO ? H2). These results show that activated carbon produced from microwave pyrolysis of palm kernel shell is a promising catalyst support material. Chemically activated carbon performed better as catalyst support compared with physically activated carbon in terms of CH4 and CO2 conversions.

- by Rock Keey Liew and +1
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- Activated Carbon, Supported Catalyst, Microwave pyrolysis, Palm Kernel Shell
- by Ting Li
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- Engineering, Scanning Electron Microscopy, Activated Carbon, Catalyst
- by Rafael García and +1
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- Chemical, Multidisciplinary, Activated Carbon, Chromium
- by Emma Nehrenheim and +1
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- Engineering, Ecotoxicology, Leaching, Water Treatment
- by Galen Suppes
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- Chemical Engineering, Energy, Activated Carbon, Flow

Kinetics of batch adsorption of iron II ions from aqueous solution using activated carbon from waste Nigerian based Nigerian bamboo was studied. The bamboo was cut into sizes, washing and drying was carbonized at 400oC-500oC and activated at 800oC using nitric acid. The effect of process parameters such as particle size, carbon dosage, initial concentration of adsorbate and contact time were also investigated and were found to significantly affect the adsorption capacity. The adsorption process obeyed the Freundlich, Temkin and Langmuir isotherm model indicating a monolayer formation over the surface of the material. Langmuir isotherm had a better fit than Freundlich and Temkin models with maximum monolayer saturation capacity of 166.7 mg of iron II ions adsorbed per g of bamboo activated carbon. In order to determine the mechanism of sorption, kinetic data were modeled using the pseudo first order, pseudo second order kinetic equations, and intra-particle diffusion model. The pseudo second order equation was the best applicable model to describe the sorption process. Hence the pseudo second order kinetic reaction is the rate controlling step with some intra particle diffusion taking place.
Keywords: Nigerian Bamboo, Activated Carbon, Iron

- by Francisco Rodriguez-Reinoso
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- Engineering, Carbon, Activated Carbon, Molecular Sieve

Several series of activated carbons have been prepared by chemical activation of peach stones with ZnCl 2 in order to show the effect of variables such as a precursor particle size, extent of impregnation, impregnation method, and... more

- by Mega Puspitasari
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- Engineering, Carbon, Activated Carbon, Physical sciences
- by Juan Carlos Gonzalez
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- Carbon Dioxide, Multidisciplinary, Activated Carbon, Porosity
- by Soumik Banerjee
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- Biomedical Engineering, Carbon, Carbon Nanotubes, Carbon Nanotube
- by Jens Ducrée
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- Engineering, Performance, Stability, Fuel Cell
- by Sergios Papageorgiou
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- Chemical Engineering, Kinetics, Activated Carbon, Mediterranean Sea
- by Rodica Chiriac
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- Engineering, Nuclear Magnetic Resonance, Hydrogen Storage, Activated Carbon

Phosphoric acid (H3PO4) and sodium hydroxide (NaOH) treated rice husks, followed by carbonization in a flowing nitrogen were used to study the adsorption of malachite green (MG) in aqueous solution. The effect of adsorption on contact time, concentration of MG and adsorbent dosage of the samples treated or carbonized at different temperatures were investigated. The results reveal that the optimum carbonization temperature is 500 °C in order to obtain adsorption capacity that is comparable to the commercial activated carbon for the husks treated by H3PO4. It is interesting to note that MG adsorbed preferably on carbon-rich than on silica rich-sites. It is found that the behaviour of H3PO4 treated absorbent followed both the Langmuir and Freundlich models while NaOH treated best fitted to only the Langmuir model.

- by Billy Joe Lingahan
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- Multidisciplinary, Adsorption, Activated Carbon, Charcoal