Study on Preparation of Activated Carbon from Corncob Furfural Residue with ZnCl2 by Microwave Irradiation

2010 ◽  
Vol 152-153 ◽  
pp. 1322-1327 ◽  
Author(s):  
Cong Jin Chen ◽  
Long Bin Wei ◽  
Peng Cheng Zhao ◽  
Yue Li ◽  
Hua Yu Hu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Mass Concentration ◽  
Ph Value ◽  
Irradiation Time ◽  
Carbon Yield ◽  
Solution Ph ◽  
Soaking Time ◽  
Furfural Residue

In this paper, the feasibility of preparing activated carbon from corncob furfural residue with ZnCl2 by microwave irradiation was studied. The effect of the ratio by weight of ZnCl2 to corncob furfural residue, ZnCl2 solution soaking time, microwave irradiation time and the pH value of ZnCl2 solution on the quality of activated carbon was investigated. On the condition that the microwave power is 800 W and ZnCl2 solution mass concentration is 50%, the best technological parameter on preparing activated carbon with ZnCl2 by microwave irradiation is obtained: at the ratio of 3.5:1 by weight of ZnCl2 to corncob furfural residue, microwave irradiation time is 20 min, ZnCl2 solution soaking time is 12 h, the pH value of ZnCl2 solution is 2, the activated carbon yield reached 33.1% and the decolorizing capacity for methylene blue is 202.5 mg/g, the product is used in treating Cr6+ solution(pH value 4.0, concentration 50 mg/L), its adsorption capacity of Cr6+ is 7.583 mg/g.

scholarly journals Adsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO 2 /sewage sludge-based activated carbon nanocomposites

2017 ◽  
Vol 4 (12) ◽  
pp. 170834 ◽  
Author(s):  
M. Nageeb Rashed ◽  
M. A. Eltaher ◽  
A. N. A. Abdou
Keyword(s):  
Activated Carbon ◽  
Methyl Orange ◽  
Sewage Sludge ◽  
Removal Efficiency ◽  
Ph Value ◽  
Irradiation Time ◽  
Order Kinetic ◽  
Solution Ph ◽  
X Ray ◽  
Methyl Orange Dye

Nanocomposite TiO 2 /ASS (TiO 2 nanoparticle coated sewage sludge-based activated carbon) was synthesized by the sol-gel method. The changes in surface properties of the TiO 2 /ASS nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray fluorescence. The prepared TiO 2 /ASS nanocomposite was applied for simultaneous removal of methyl orange dye (MO) and Cd 2+ from bi-pollutant solution. The factors influencing photocatalysis (TiO 2  : ASS ratios, initial pollutant concentrations, solution pH, nanocomposite dosage and UV irradiation time) were investigated. The results revealed that high removal efficiency of methyl orange dye (MO) and Cd 2+ from bi-pollutant solution was achieved with TiO 2 /ASS at a ratio (1 : 2). The obtained results revealed that degradation of MO dye on the TiO 2 /ASS nanocomposite was facilitated by surface adsorption and photocatalytic processes. The coupled photocatalysis and adsorption shown by TiO 2 /ASS nanocomposite resulted in faster and higher degradation of MO as compared to MO removal by ASS adsorbent. The removal efficiency of MO by ASS adsorbent and TiO 2 /ASS (1 : 2) nanocomposite at optimum pH value 7 were 74.14 and 94.28%, respectively, while for Cd 2+ it was more than 90%. The experimental results fitted well with the second-order kinetic reaction.

Effects of Activated Carbon in Microwave Induction of Lateritic Ore

2013 ◽  
Vol 372 ◽  
pp. 433-436 ◽  
Author(s):  
He Chen ◽  
Rui Guo ◽  
Na Su ◽  
Yue Hong Zhang ◽  
Xuan Wen Liu
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Stable Process ◽  
Heating Time ◽  
Heating Process ◽  
Roasting Process ◽  
Reductive Roasting ◽  
Lateritic Ore ◽  
Composition Of Products

Lateritic ore can be heated and deoxidized rapidly via microwave irradiation with activated carbon as deoxidizer. In this paper, we studied the reductive roasting behavior of carbon-containing lateritic ore in microwave field and the composition of products through different heating process with varying carbon content. The results show that the heating process of the lateritic ore is a thermally stable process. The reductive level of lateritic ore can be adjusted by changing the proportion of carbon powders and the heating time of microwave irradiation. During this reductive roasting process, the quality of the added carbon powders will make a great impact on the phase composition of the product and then affect the heating rate. The reductive calcite product mainly consists of magnetite and wastage. With the rising of the content of reducing agent, the reductive level of lateritic ore will increase, which cause Ni and a small quantity of Fe to be deoxidized and forms Ni-Fe alloy.

scholarly journals PENGARUH KONSENTRASI ASAP CAIR DAN LAMA PERENDAMAN TERHADAP MUTU ORGANOLEPTIK IKAN KAYU (KATSUO-BUSHI)

2017 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Yisia Katiandagho ◽  
Siegfried Berhimpon ◽  
Albert Royke Reo
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Moisture Content ◽  
Aromatic Hydrocarbon ◽  
Sensory Quality ◽  
Ph Value ◽  
Soaking Time ◽  
Smoked Fish ◽  
Liquid Smoke ◽  
Polycyclic Aromatic

Dried smoked skipjack or better known as Katsuo-bushi is a popular type of smoked fish in Japan. It has a distinctive flavor and widely used in traditional Japanese cuisine. The weakness of commercial Katsuo-bushi nowadays is the high content of Polycyclic Aromatic Hydrocarbon (PAH) (may exceed 10 ppb).  Recent study examined the low PAH Katsuo-bushi product made with liquid smoke. However, the sensory acceptance of this product has not been determined yet.  The purpose of this study was to determine the effect of liquid smoke concentration (1%, 2% and 3%) and soaking time (10, 20 and 30 min) on the sensory quality of Katsuo-bushi. Duo-trio method was used for sensory evaluation. Additional chemical analysis such as moisture content and pH were performed. Significant differences were found among liquid smoke Katsuo-bushi product compare to traditional Katsuo-bushi (P<0.1). Also, it is suggested that the longer the soaking time, the higher the moisture content and pH value. Keyword: Katsuo-bushi, liquid smoke, Duo trio method.   Ikan kayu atau lebih dikenal dengan Katsuo-bushi adalah sejenis ikan asap yang telah lama dikenal dan memiliki flavor yang khas yang biasanya digunakan pada masakan tradisional di Jepang.  Kelemahan ikan kayu yang ada di dunia dewasa ini adalah tingginya kandungan Polycyclic Aromatic Hydrocarbon (PAH) yang melebihi 10 ppb. Penelitian terkini (Berhimpon, dkk 2016) meneliti ikan kayu asap cair yang rendah PAH, tetapi belum diteliti tingkat kesukaan secara organoleptik. Penelitian ini adalah untuk mendapatkan ikan kayu asap cair yang rendah PAH tetapi disukai oleh konsumen. Tujuan penelitian ini ialah untuk mengetahui pengaruh konsentrasi asap cair dan lama perendaman terhadap mutu organoleptik ikan kayu asap cair yang dibuat dengan berbagai konsentrasi dan lama perendaman, dan dibandingkan dengan ikan kayu konvensional. Parameter pengamatan ialah analisa organoleptik dengan metode duo trio (Berhimpon, dkk. 2005), analisa kadar air dan pH (AOAC, 2005). Hasil penelitian ini menunjukkan bahwa ikan kayu yang direndam dalam asap cair dengan konsentrasi 2% dan 3% masing-masing selama 30 dan 10 menit berbeda sangat nyata (P<0,1) dengan ikan kayu konvensional. Sedangkan perlakuan yang lain sama dengan ikan kayu konvensional. Untuk analisa kadar air dan pH menunjukkan bahwa lama perendaman memberikan pengaruh yang nyata terhadap nilai kadar air dan pH dari ikan kayu asap cair, dimana semakin lama waktu perendaman dalam larutan asap cair maka semakin tinggi kadar air dan pH dari ikan kayu tersebut. Kata Kunci: Ikan kayu (Katsuo-bushi), asap cair, metode duo trio.

scholarly journals EFEKTIVITAS PENAMBAHAN KARBON AKTIF ARANG KAYU BAKAU DALAM PROSES FILTRASI AIR GAMBUT

2020 ◽  
Vol 4 (2) ◽  
pp. 85-94
Author(s):  
Nila Puspita Sari ◽  
Mashuri Mashuri
Keyword(s):  
Activated Carbon ◽  
Activated Charcoal ◽  
Ph Value ◽  
Wood Charcoal ◽  
Filtration Process ◽  
Quality Of Water ◽  
Before And After ◽  
Slow Sand Filter ◽  
Mangrove Wood

Peat water can cause diseases such as cholera, hepatitis, dysentery, skin and eye diseases, and digestive diseases. Peat water is source water that is used daily needed by society in Segomeng. Mangrove wood is a material that can be used in the process of water purification because it can be used as activated charcoal which is a carbon compound, which is produced from a material that contains carbon. The research purpose is to know whether activated carbon of mangrove wood charcoal can be a medium of peat water filtering into clean water. This research type is the experiment and the design of this research uses Complete Random Design with some treatment which is arranged randomly for all experimental units. The different treatments are given, among others, using slow sand filtration and clay soil as a coagulant, using a slow sand filter with activated charcoal added mangrove wood with a thickness of 10 cm, and with a thickness of 15 cm. The results showed filtration with the addition of activated charcoal from mangrove wood with a thickness of 15 cm in getting the best results, can increase the pH value and is expected to improve the water quality of the acidic, odor-free, reducing taste, and the rapid filtration process that is 10 minutes. The conclusion is that the addition of activated carbon from mangrove wood charcoal is quite effective in the process of peat water filtration and can improve physical quality of water. The Suggestion is,should be measured of physical, chemical and biological character of peat water before and after filtration process.and also measurement of absorption of activated carbon of charcoal of mangrove wood before used as absorbent in filtration process

Study on Microwave Combined with Active Carbon for the COD Remove of Amoxicillin Wastewater

2013 ◽  
Vol 295-298 ◽  
pp. 1348-1352 ◽  
Author(s):  
Quan Li Feng ◽  
Xue Qian Wang ◽  
Yu Jia ◽  
Ping Ning
Keyword(s):  
Activated Carbon ◽  
Active Carbon ◽  
Ph Value ◽  
Irradiation Time ◽  
Granular Activated Carbon ◽  
Cod Removal ◽  
Removal Rates

This paper makes the amoxicillin production wastewater as the research target and uses the microwave-activated carbon to treat this kind of wastewater. The results show that 6g of the 60 purpose granular activated carbon mixed with 50ml of the wastewater that diluted 10 times and the pH value is 9 under the condition that irradiated power up to 480W and the irradiation time for 7min, the COD removal rates is up to 96.38% and the effluent COD value is 48.28mg/L.

scholarly journals Influence of the Duration of Microwave Irradiation of Scots Pine (Pinus sylvestris L.) Cones on the Quality of Harvested Seeds

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1108
Author(s):  
Monika Aniszewska ◽  
Arkadiusz Gendek ◽  
Ewa Tulska ◽  
Paulina Pęska ◽  
Tadeusz Moskalik
Keyword(s):  
Microwave Irradiation ◽  
Irradiation Time ◽  
Initial Moisture Content ◽  
Outer Part ◽  
Microwave Treatment ◽  
Quality Class ◽  
Short Period ◽  
Seed Extraction ◽  
Pine Cones

To improve the process of seed extraction, new solutions have been investigated in an attempt to develop guidelines for the construction of small seed extraction equipment. One of the solutions proposed in this field is the use of electromagnetic radiation in the first stage of hulling cones, reducing their initial moisture content, which will result in quicker scale opening. It is proposed that cones should be irradiated for a relatively short period in the first stage. This operation will allow a quicker loss of moisture from the cones that are still closed, which will result in a more intensive opening of cone scales and will also positively affect the exposure of seeds for the next phase of hulling. The aim of the study was to evaluate the effect of microwave irradiation of pine cones on the quality of the seeds obtained. Cones were exposed to microwaves produced by an 800 W generator. The research was performed in several modes, in which the variable parameters were the duration of microwave irradiation, arrangement of cones with the apex pointed towards either the inner or outer part of the turntable, and the number of cones. The temperature distribution on the surface of and inside the cones was determined using the THERM v2 (Vigo System SA, Ożarów Mazowiecki, Poland) thermal image processing software. We also assessed the energy (vitality) and germinability (quality class) of seeds that were not exposed and those after microwave treatment. The results of the research allowed us to state that, with the assumed parameters of the process, it is possible to obtain second quality class seeds after exposure to microwaves for 5 s. This result was comparable to the quality of seeds obtained without the use of microwaves. When the irradiation time was increased above 5 s, the vitality of seeds decreased and their quality was not satisfactory.

Research on the Regeneration of Modified Activated Carbon Containing 2,4,6-TCP by Microwave Irradiation

2014 ◽  
Vol 1033-1034 ◽  
pp. 1358-1361
Author(s):  
Min Wang ◽  
Xiang Lian Wang ◽  
Gui Qing Gao
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Microwave Power ◽  
Irradiation Time ◽  
Adsorption Volume ◽  
Modified Activated Carbon ◽  
Microwave Regeneration ◽  
Loading Amount ◽  
Power Microwave

Microwave regeneration research has been conducted for the modified activated carbon (MAC) which has adsorbed 2,4,6-TCP. The effects of microwave power, microwave irradiation time and MAC loading amount for regeneration are studied.The results show that, at the beginning, the adsorption volume increases with the increase of the microwave power. However, when the power is over 450w, the adsorption volume begins to fall. The adsorption volume increases with the irradiation time,rises to its peak when irradiated for 6 minutes.The adsorption volume increases with the loading amount and rises to its peak when the amount is 5g.

scholarly journals Effect of Chemical Activating Agents on Surface Area and Methylene Blue Uptake Capacity of Activated Carbons

2021 ◽  
Vol 64 (3) ◽  
pp. 254-264
Author(s):  
Muhammad Saleem
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Surface Area ◽  
Activated Carbons ◽  
Ph Value ◽  
Volatile Matter ◽  
Uptake Capacity ◽  
Production Parameters ◽  
Activating Agent

Activated carbon from Acacia asak (Fabaceae) tree branches was prepared utilizing three-steps- process and H3P04, ZnCl2, H2S04, K2C03, Na0H and K0H as chemical activating agents. In addition to the elemental analysis of precursor materials, produced activated carbon (ATB-AC) was also analyzed for moisture content, ash content, pH value, bulk density, volatile matter, hardness, specific surface area (SBET), iodine number and pore volume. Results revealed that the quality of ATB-AC is well comparable to the available commercial activated carbon (CAC). The SBET was found to be in the order of ATB-AC1> ATB- AC2> ATB-AC4> ATB-AC6> ATB-AC3> ATB-AC5. All the produced ATB-AC demonstrated good MB (methylene blue) removal efficiency, whereas ATB-AC1 and ATB-AC2 (produced from H3P04, and ZnCl2) showed higher efficiency. It is concluded that the chemical activating agent has significant effect on produced AC keeping all other production parameters constant. Among the six studied chemicals, H3P04 and ZnCl2 produced AC exhibited high SBET surface area and MB uptake capacity.  

scholarly journals KUALITAS FISIK DAGING DADA DAN PAHA BROILER YANG DIRENDAM DALAM LARUTAN DAUN SALAM (Syzygium polyanthum)

2018 ◽  
Vol 6 (1) ◽  
pp. 83
Author(s):  
Dian Septinova ◽  
Madi Hartono ◽  
Purnama Edy Santosa ◽  
Siti Hartika Sari
Keyword(s):  
Ph Value ◽  
Cooking Loss ◽  
Broiler Meat ◽  
Soaking Time ◽  
Physical Quality ◽  
Tukey Test ◽  
Randomized Design ◽  
Completely Randomized Design

The objectives of the study were (1) to know there was or no interaction between soaking time in bay leaf and type of carcass to the physical quality of broiler meat; (2) To know the duration of optimum immersion for the physical quality of the muscles of the breast and thighs. This research was arranged using Completely Randomized Design (RAL) with factorial pattern. The first factor is the length of meat immersion in bay leaf solution, namely: P0: control; P1 (20 minutes); P2 (40 minutes); P3 (60 minutes). While the second factor is a piece of carcass, namely: K1 (thigh) and K2 (chest). Each treatment was repeated 3 times. The research variables were pH of meat, WHC, and cooking loss. The data obtained were proceed to variance analyze and further tested by BNT  Test for length of  immersion and Tukey test for carcass type at 5% level of significant. The results showed that there was no interaction (P>0,05) between soaking time and carcass cut. The duration of immersion had no significant (P>0,05) effect on pH, WHC, and cooking loss. Carcasses cut of thight and breast have a significant effect (P<0,05) on pH and cooking loss, but are not significant (P>0,05) for WHC. The pH value of the thigh meat is significantly (P<0,5) higher than the breast, but the cooking loss is lower. Keywords :  Bay Leaf, Breast, Thight, Broiler, Physical Quality

scholarly journals Adsorption of methylene blue onto activated carbon prepared from Lupinus Albus

2016 ◽  
Vol 22 (2) ◽  
pp. 155-165 ◽  
Author(s):  
Safiye Bağcı ◽  
Ayhan Ceyhan
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Ph Value ◽  
Chemical Activation ◽  
Lupinus Albus ◽  
Total Pore Volume ◽  
Nitrogen Adsorption ◽  
Bet Surface Area ◽  
Maximum Adsorption Capacity ◽  
Solution Ph

The adsorption of methylene blue (MB) from synthetic aqueous solutions in batch experiments using Lupinus Albus-activated carbon (LAAC) by chemical activation with zinc chloride was investigated. Prior to adsorption experiments, surface/physical properties of LAAC were determined using Scanning Electron Microscopy, Fourier transform infrared Spectroscopy and nitrogen adsorption isotherm. In the adsorption experiments, effects of adsorption time, solution pH, MB concentration and amount of LAAC were investigated. The isotherm and kinetic parameters were used to describe the experimental data. The BET surface area was 1254 m2/g while its total pore volume was found to be 0.484 cm3/g. Maximum adsorption capacity occurred at solution pH value 10 and was recorded as 109.89 mg/g. Adsorption data were modeled using Langmuir, Freundlich and Temkin adsorption isotherms. Langmuir isotherm and pseudo-second-order models fit to the process and reaction kinetics correspondingly.

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