Optimized glycerol uptake from biodiesel by activated carbon prepared of Pequi (Caryocar brasiliensis Camb.) biomass residues: A novel raw material option in Brazil

2019 ◽  
Vol 11 (3) ◽  
pp. 033101
Author(s):  
Carlos Magno Marques Cardoso ◽  
Danilo Gualberto Zavarize ◽  
Glaúcia Eliza Gama Vieira
Keyword(s):  
Activated Carbon ◽  
Raw Material ◽  
Biomass Residues ◽  
Glycerol Uptake

scholarly journals Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4483
Author(s):  
Yuyingnan Liu ◽  
Xinrui Xu ◽  
Bin Qu ◽  
Xiaofeng Liu ◽  
Weiming Yi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Photoelectron Spectroscopy ◽  
Adsorption Process ◽  
Physical Adsorption ◽  
Raw Material ◽  
Order Kinetic ◽  
Mercury Ions ◽  
Corn Cob ◽  
Adsorption Time ◽  
X Ray

In this study, corn cob was used as raw material and modified methods employing KOH and KMnO4 were used to prepare activated carbon with high adsorption capacity for mercury ions. Experiments on the effects of different influencing factors on the adsorption of mercury ions were undertaken. The results showed that when modified with KOH, the optimal adsorption time was 120 min, the optimum pH was 4; when modified with KMnO4, the optimal adsorption time was 60 min, the optimal pH was 3, and the optimal amount of adsorbent and the initial concentration were both 0.40 g/L and 100 mg/L under both modified conditions. The adsorption process conforms to the pseudo-second-order kinetic model and Langmuir model. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Zeta potential characterization results showed that the adsorption process is mainly physical adsorption, surface complexation and ion exchange.

scholarly journals PENGARUH PENAMBAHAN KARBON AKTIF DARI KULIT SINGKONG TERHADAP PENURUNAN KADAR MANGAN (Mn) DALAM AIR DENGAN BEBERAPA VARIASI KONSENTRASI

2019 ◽  
Vol 7 (2) ◽  
pp. 96
Author(s):  
Darmawati Darmawati ◽  
Syarifah Maulidar ◽  
Khairun Nisa
Keyword(s):  
Activated Carbon ◽  
Spectrophotometric Method ◽  
Carbon Concentration ◽  
Raw Material ◽  
Manganese Concentration ◽  
Manganese Reduction ◽  
Cassava Peels ◽  
Cassava Peel ◽  
Banda Aceh

The study aims to find out about the possibility of utilizing cassava peel waste as raw material for making activated carbon to reduce levels of Manganese in water. This study also wants to see the effect of variations in the concentration of activated carbon from cassava peels on decreasing levels of Manganese in water. This research was conducted at the Laboratory of the Akademi Analis Kesehatan Pemerintah Aceh and at the UPTD Laboratorium Kesehatan Banda Aceh on 3-11 March 2016. Manganese was analysed using the persulfate method while the Manganese was examinated by the spectrophotometric method. The sample used is an artificial sample by adding MnSO4 to water. The variation of activated carbon concentration added is 2 gr, 3 gr, and 4 gr. The results are that with the addition of 2 grams of activated carbon the percentage of Manganese reduction was 70.37%, the addition of 3 grams of activated carbon decreased Manganese concentration by 86.59%, while the addition of 4 grams of activated carbon reduced the percentage of Manganese to 92.33%. It can be concluded that the higher the concentration of activated carbon added, the higher the decrease in levels of Manganese in the water.

scholarly journals Characterization of Activated Carbon from Industrial Solid Waste Agar with a Different Activator Concentrations

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 77
Author(s):  
Khuril Zaqyyah ◽  
Sri Subekti ◽  
Mirni Lamid
Keyword(s):  
Activated Carbon ◽  
Carbon Content ◽  
Solid Waste ◽  
Active Carbon ◽  
Liquid Waste ◽  
Ash Content ◽  
Raw Material ◽  
Activator Concentration ◽  
Industrial Solid Waste ◽  
Randomized Design

Production of seaweed processing generates a huge amount of waste, either waste solid or liquid waste. For solid waste contains a lot of organic carbon derived from cellulose or hemicellulose. Therefore, the solid waste that has the potential as a raw material of activated carbon. This study aims to determine the characteristics of the activated carbon produced from solid waste agar and determine the optimal concentration of activator that produced the best characteristics of the activated carbon. The treatment used is a different activator concentration which is designed using completely randomized design (CRD) with five treatments and four replications. The results showed the five treatments are significant differences in the characteristics of the ash and pure active carbon content. This study shows that the manufacture of activated carbon industrial solid waste agar with a different activator concentration influence on the characteristics of the active carbon with ash content parameter and pure active carbon content. The concentration of activator that can provide the highest value of pure activated carbon is in P5 with a concentration of 6 M. Based on this study are advised to do further research on how to lower the ash content of the activated carbon from solid waste agar.

scholarly journals Evaluation of alkaline-based activated carbon from Leucaena Leucocephala produced at different activation temperatures for cadmium adsorption

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Wan Muhammad Hilmi Wan Ibrahim ◽  
Mohd Hazim Mohamad Amini ◽  
Nurul Syuhada Sulaiman ◽  
Wan Rasidah Wan Abdul Kadir
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Leucaena Leucocephala ◽  
Heavy Metal Contamination ◽  
High Heat ◽  
Raw Material ◽  
Activation Temperature ◽  
Promising Alternative ◽  
Alternative Material ◽  
The Cost

AbstractHeavy metal contamination in water is happening worldwide. Adsorption using activated carbon is a common choice for cleaning the wastewater. The drawback of activated carbon is the higher cost of production due to the need for high heat in the process. This work investigated on activated carbon produced from the abundantly available Leucaena leucocephala biomass in order to reduce the cost of raw material. The biomass was chemically activated at different activation temperatures. The produced activated carbon was characterized using SEM, FT-IR, surface analyzer, and TGA. Isothermic and thermodynamic studies were done to evaluate the adsorption properties of the activated carbon. It was found out that higher surface area can be obtained using the higher activation temperature. Higher NaOH to carbonized sample ratios also resulted in higher surface area for all activation temperatures, which are 662 m2g-1 for 700 °C activation temperature, 735 m2g-1 for 750 °C, and 776 m2g−1 for 800 °C. Isothermic studies showed that all of the activated carbon that is produced from Leucaena leucocephala biomass are fit to the Langmuir isotherm, regardless of any activation temperature. Lastly, the thermodynamic study found out the adsorption process is endothermic, reflected by the positive value of ΔHo. It can be concluded that Leucaena leucocephala is a promising alternative material for producing activated carbon.

scholarly journals Design, Cost Estimation and Sensitivity Analysis for a Production Process of Activated Carbon from Waste Nutshells by Physical Activation

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 945
Author(s):  
Marcelo León ◽  
Javier Silva ◽  
Samuel Carrasco ◽  
Nelson Barrientos
Keyword(s):  
Sensitivity Analysis ◽  
Activated Carbon ◽  
Cost Estimation ◽  
Net Present Value ◽  
Cash Flows ◽  
Raw Material ◽  
Total Annual Cost ◽  
Physical Activation ◽  
Production Plant ◽  
Tax Rate

A conceptual design of an industrial production plant for activated carbon was developed to process 31.25 tons/day of industrial waste nutshells as the raw material and produce 6.6 ton/day of activated carbon using steam as an activation agent. The design considered the cost of the main equipment, the purchase price of the nutshells, basic services, and operation. A sensitivity analysis was developed, considering the price of the finished product and the volume of raw material processing varied up to ±25%. Furthermore, the total annual cost of the product was determined based on the production of 2100 tons/year of activated carbon. Two cash flows were developed and projected to periods of 10 years and 15 years of production, using a tax rate of 27%, a low discount rate (LDR) of 10% per year, and without external financing. For a 10-year production project, the net present value (NPV) was USD 2,785,624, the internal return rate (IRR) 21%, the return on investment (ROI) 25%, and the discounted payback period (DPP) after the fifth year. Considering a project with 15 years of production, the NPV was USD 4,519,482, the IRR at 23%, the ROI 24%, and the DPP after the fifth year of production.

Urban Sludge and the Performance of the System of Wood Activated Carbon Research

2015 ◽  
Vol 730 ◽  
pp. 271-274
Author(s):  
Yan Kun Cheng
Keyword(s):  
Activated Carbon ◽  
Operating Conditions ◽  
Raw Material ◽  
Activated Carbon Adsorption ◽  
Activation Temperature ◽  
Carbon Sample ◽  
Carbon Adsorption ◽  
Treatment Experiment ◽  
Temperature Operating ◽  
Physical And Chemical

In urban sludge and sawdust as raw material,using zinc chloride activation method in the preparation of activated carbon under different operating conditions, through the detection of specific surface area activated carbon sample and methylene blue adsorption value and the iodine adsorption value, studies the impregnation ratio, activation time and activation temperature operating conditions affect the performance of activated carbon sample. Through to the physical and chemical modification of activated carbon,To the preparation of activated carbon adsorption purification treatment experiment was carried out in the discharge of sewage.

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