Characteristics of Active Carbon from Utilization of Red Chili Trees (Capsicum annuum L)

This work studies the use of red chilli tree (capsicum anuumm L) waste as material of activated carbon and examines the morphological structure and elemental composition of the activated chili trees. The morphological structure was measured at TekMIRA (Pusat Penelitian dan Pengembangan Teknologi Mineral dan Batubara, Bandung) by using the scanning electron microscope (SEM), and the composition of the elements of carbon, hydrogen, nitrogen and ash is determined by the ultimate testing analysis with the ASTM D5373 standard. In the testing procedure, activated carbon is made from red chili tree waste by dehydration with a temperature of 2000 C for 1 hour and carbonized with a temperature of 3750 C for 1 hour. Then, the chemical activation (NaOH) is made in variation of concentration of 1%, 3%, and 5% with soaked time 24 hours, and dried at 2000 C for one hour. The carbonization at a concentration of 1% (NaOH) gave the best result on activated carbon from red chili trees.

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Ortsteins in the sod-podzolic pseudogleyed soils of the Beskydy Precarpathians

Visnyk of the Lviv University. Series Geography ◽

10.30970/vgg.2019.53.10678 ◽

2019 ◽

Vol 53 ◽

pp. 277-287

Author(s):

Zinoviy Pankiv ◽

Olena Kalynych

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Elemental Composition ◽

Soil Formation ◽

Accumulation Factor ◽

X Ray ◽

Modern Soil ◽

Different Parts ◽

Scanning Electron ◽

Made In

On the basis of morphological and laboratory-analytical researches it is established that in the profile of sod-podzolic pseudogleyed soils of the Beskydy Precarpathians are formed ortsteins that have clear outer contours, concentric inner structure with alternation of rust-red circles. Two ranges for the formation of ortsteins in the investigation soils were established: in the overiluvial part of the profile and the transition to the rock horizon. Within the НЕgl horizon, the content of ortsteins is 2.8 %, and in the fractional composition, the fraction is from 2.1 to 3.0 mm (37.5 %). The highest content of ortsteins (7.7 %) is characteristic of the Ehgl horizon, within which the fraction from 7.1 to 10.0 mm (27.2 %) prevails. Within the Pigl horizon, large ortsteins of 1.0 to 5.0 cm in size are oval and tubular with a concentric inner structure, and their content is 17.6 %. Ortsteins in the sod-podzolic pseudogleyed soils were formed as a result of alternation of redox conditions with the participation of specific, nonspecific microflora and glesish-eluvial, segregation processes of soil formation. The small ortsteins in the overiluvial part of the profile are the result of modern soil formation, and the large ones within the Pigl horizon are relict and associated with the early stages of soil formation in the Precarpathians. In order to identify the genesis and elemental composition, a plate of tubular ortstein with a diameter of 1.2 cm, which was selected from the Pigl horizon (220–240 cm), was made. In different parts of the plate, differing in colour, four points up to 1 μm in size (two against a light background and two against a dark one) were selected, within which elemental composition was determined by micro-X-ray spectrometry. The measurements were performed on a scanning electron microscope REM-106 (Ukraine) with a resolution of 5 nm and an energy-dispersive X-ray detector. The study of ortstein using a scanning electron microscope revealed that the formation of black rings within the tubular ortstein is due to an increase in the percentage of Manganese in 1.6–3.4, Aluminium in 1.4–2.3 and Calcium in 2.1–5.4 times. The percentage of Ferum in different parts of the ortstein is approximately the same, which determines its rusty-brown colour. Key words: ortsteins, sod-podzolic pseudogleyed soils, Beskydy Precarpathians, the accumulation factor, electron-scanning microscope.

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A secondary stage design for the preparation of microfossils for the SEM

Journal of Micropalaeontology ◽

10.1144/jm.12.2.154 ◽

1993 ◽

Vol 12 (2) ◽

pp. 154-154

Author(s):

Stephen Tatman

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Low Cost ◽

Sample Tube ◽

Stage Design ◽

Single Carrier ◽

Secondary Stage ◽

Scanning Electron ◽

Made In

Abstract. The preparation of microfossil specimens for study with the scanning electron microscope involves the transfer of material from slides to stubs. Specimens must then be oriented and mounted securely. To do this accurately the slide and stub should both be viewed through a stereomicroscope. However due to differences in shape and height, both surfaces are not usually in the plane of focus at the same time. Many micropalaeontologists routinely use small boxes or sample tube lids to hold the stub and refocus before finally mounting the specimens. The risk of dropping specimens is reduced by using a single carrier, securely holding both the slide and stub. The design illustrated below (fig.1) was developed from a prototype constructed from cardboard and plastic. The metal unit can easily be made in a workshop at a very low cost or cardboard versions made in the laboratory.The stage is based on the principle that both slide and stub should be held securely, close together and in the same plane of focus. The slide holders should be secure but not too tight otherwise the stub may be jarred as slides are changed. The number of slides which can be held on one unit may be varied. The presence of two holders has proved useful, any more could make the unit cumbersome. If the microscope to be used does not have a wide stage then it may prove more practical to have only one holder.The stub holders allow the stub to be clamped to . . .

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Activated Carbon Supported Hafnium(IV) Chloride as an Efficient, Recyclable, and Facile Removable Catalyst for Expeditious Parallel Synthesis of Benzimidazoles

Catalysts ◽

10.3390/catal10040436 ◽

2020 ◽

Vol 10 (4) ◽

pp. 436

Author(s):

Xiao-Chong Peng ◽

Shan-Shan Gong ◽

De-Yun Zeng ◽

Shu-Wang Duo ◽

Qi Sun

Keyword(s):

Activated Carbon ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Thermal Desorption ◽

Efficient Method ◽

Solid Support ◽

Parallel Synthesis ◽

Highly Efficient ◽

Reaction Solution ◽

Scanning Electron

A highly efficient method for parallel synthesis of a diversity of 1,2-disubstituted benzimidazoles from N-substituted phenylenediamines and aldehydes has been developed by using 10 mol% HfCl4 on activated carbon (HfCl4/C) as the catalyst. The newly reported HfCl4/C catalyst not only mediated fast and clean formation of benzimidazoles but also could be easily removed from the reaction solution and reused up to eight times. Scanning electron microscope (SEM) and thermal desorption studies showed that activated carbon could reversibly adsorb and release Hf(IV) in ethanol upon cooling and heating, thereby serving as a thermal-controlled solid support.

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Characterization of Fe Doped AC/TiO2

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.k1315.10812s19 ◽

2019 ◽

Vol 8 (12S) ◽

pp. 1146-1147

Keyword(s):

Activated Carbon ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Anatase Phase ◽

Sol Gel ◽

Sem Analysis ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

Abstract: The photocatalytic composite Fe doped AC/TiO2 has been prepared by sol-gel method. The prepared Fe doped AC/TiO2 composite were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD).The SEM analysis showed that Fe and TiO2 were attached to the Activated Carbon surfaces. The X-Ray Diffraction data showed that Fe doped AC/TiO2 composite mostly contained anatase phase.

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Spatiotemporal and Source Analysis of Ultrafine Particulates (PM1) over Bengaluru, Karnataka, India

10.21203/rs.3.rs-32223/v2 ◽

2020 ◽

Author(s):

Manjunatha A S ◽

Ganesh K E

Keyword(s):

Electron Microscope ◽

Air Quality ◽

Scanning Electron Microscope ◽

Elemental Composition ◽

Mass Concentration ◽

Ambient Air ◽

Source Analysis ◽

Standard Limit ◽

Scanning Electron ◽

Mass Concentrations

Abstract Measurement and analysis of Particulate Matter (PM1) of aerodynamic diameter less than 1µm (PM1) has been carried out using indigenously built air sampler APM 577 from IIT-K for the period July 2018 - July 2019. Bengaluru being one of the megacities of India requires constant follow up of air quality. Following locations of Bengaluru city have been selected for the study: Basavanagudi (BAS), Domlur (DOM), Hosur road (HOS) and DC Halli (DCH). The mass concentrations of collected PM1 samples have been observed to vary from 20.16 to 68.64 µg m-3 during the study period. The highest mass concentration of 68.64 µg m-3 was observed for the location BAS and the lowest mass concentration of 20.16 µg m-3 was observed for the location DOM. The seasonal average mass concentration of PM1 around Bengaluru for winter, summer, monsoon & post monsoon season during the entire study period is observed to be 47.60, 40.24, 30.85 and 38.76 µg m-3 respectively. The average 24 h mass concentrations of PM1 in winter season that is in December month at BAS location is found to be higher than National Ambient Air Quality Standard limit of 60 µg m-3 for PM2.5 however in January and February months mass concentration is found to be less than the standard limit. The Scanning Electron Microscope-Energy Dispersive Analysis X-ray techniques were used to understand the morphology and elemental composition of PM1. Scanning electron microscope images confirms the presence of particulates both from anthropogenic (primary) and natural (secondary) activities. Also, some of the collected samples showed the presence of microorganisms and biological particles such as Bacillus. Elemental composition analysis showed the presence of non-metals such as Carbon, Oxygen, Nitrogen, Sulphur and traces of metals such as Sodium, Aluminium, Calcium and Potassium. A detailed study along with the possible conclusion is the subject matter of this paper.

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In situ transformation of agave bagasse into activated carbon by use of an environmental scanning electron microscope

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2012.09.014 ◽

2013 ◽

Vol 167 ◽

pp. 249-253 ◽

Cited By ~ 9

Author(s):

Cesar Nieto-Delgado ◽

Jose Rene Rangel-Mendez

Keyword(s):

Activated Carbon ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Environmental Scanning Electron Microscope ◽

Environmental Scanning ◽

Scanning Electron

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Scanning electron microscope investigation of activated sludge and activated carbon from a wastewater purification process

Biological Wastes ◽

10.1016/0269-7483(89)90062-1 ◽

1989 ◽

Vol 30 (2) ◽

pp. 81-88 ◽

Cited By ~ 1

Author(s):

Olga Petrović ◽

Miroslav Gantar ◽

Miloš Bokorov

Keyword(s):

Activated Carbon ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Activated Sludge ◽

Purification Process ◽

Wastewater Purification ◽

Electron Microscope Investigation ◽

Microscope Investigation ◽

Scanning Electron Microscope Investigation ◽

Scanning Electron

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In Situ SEM Observations of Sintering of Gold Compacts

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100092165 ◽

1976 ◽

Vol 34 ◽

pp. 440-441

Author(s):

E. R. Levin ◽

G. R. Auth ◽

K. R. Bube

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Video Tape ◽

High Magnification ◽

Ceramic Substrates ◽

Direct Observations ◽

Ceramic Surfaces ◽

Scanning Electron ◽

Made In

As part of a study of metallization of preglazed ceramic surfaces for hybrid microcircuits, direct observations of the sintering of gold powders at temperatures in the 800-900°C range have been made in the scanning electron microscope. The changes occurring in the layers at the high temperatures were followed in detail at high magnification. Video tape recordings were made showing the sintering of the gold and the accompanying flow of the glass bonding medium.The specimens were specially prepared for the SEM studies on thin rectangular ceramic substrates 0.13mmx2mmx8mm. The unsintered gold powder, dispersed in an organic vehicle, was screen-printed in 1 mm-wide stripes along the length of substrate. Prior to sintering, the organic binder was removed by prefiring in air, typically at 400 °C for two minutes (Fig. 1). An intermediate layer of lead-borosilicate glass was used between the substrate and the metal compact to promote adhesion on sintering.

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Morphological Structure of Polystyrene Degradated by Soil Bacteria from Sarimukti Final Landfill Cipatat Bandung

International Journal of Science and Society ◽

10.54783/ijsoc.v1i3.36 ◽

2019 ◽

Vol 1 (3) ◽

pp. 146-154 ◽

Cited By ~ 1

Author(s):

Tri Rahayu Hidayat ◽

Ida Indrawati ◽

Tati Herlina

Keyword(s):

Weight Loss ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Soil Bacteria ◽

Morphological Structure ◽

Dry Weight ◽

Physical Analysis ◽

Degrading Bacteria ◽

Environmentally Friendly Method ◽

Scanning Electron

The amount of Styrofoam waste in Bandung reaches 27,02 tons per month. Styrofoam used as packaging food or drinks, that are formed on styrene and benzene. The migration of benzene from packaging materials to food can cause various diseases. The most potent source of finding indigenous bacteria that can degrade of synthetic polymers is in the Final Landfill. This research method uses exploratory methods that are analyzed descriptively consisting of the stages of the biodegradation test with the Winogradsky Column method, calculation of the percentage of weight loss of Styrofoam, physical analysis with Scanning Electron Microscope (SEM). The results of this study found 4 species of polystyrene degrading bacteria is Pseudomonas aeruginosa, Bacillus amyloliquefaciens, Bacillus cereus and Bacillus firmus. The percentage reduction in dry weight of polystyrene showed in the first week the polystyrene weight decreased by 8.27% and increased weight loss up to the eighth week which reached 18.23% and and physical analysis with Scanning Electron Microscope (SEM) indicates that the process of degradation by soil bacteria showed the formation of holes or pores on the surface. These polystyrene degrading bacteria from Sarimukti landfills can be recommended as an environmentally friendly method for reducing styrofoam waste.

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