Study of Carbon Foams Synthesized by the Pyrolysis of Wastes Coconut Shells of African Palm at Different Conditions and use of Immersion Calorimetry as a Tool for Characterization

2013 ◽  
Vol 29 (03) ◽  
pp. 877-887 ◽  
Author(s):  
JUAN CARLOS MORENO-PIRAJÁN ◽  
LILIANA GIRALDO
Keyword(s):  
Immersion Calorimetry ◽  
Carbon Foams ◽  
Coconut Shells

scholarly journals Preparation and Characterization of Activated Carbon Monoliths with Potential Application as Phenol Adsorbents

2010 ◽  
Vol 7 (2) ◽  
pp. 531-539 ◽  
Author(s):  
Diana Paola Vargas-Delgadillo ◽  
Liliana Giraldo ◽  
Juan Carlos Moreno-Piraján
Keyword(s):  
Zinc Chloride ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Micropore Volume ◽  
Immersion Calorimetry ◽  
Activated Carbon Monoliths ◽  
Coconut Shells ◽  
Characterization Of Activated Carbon ◽  
Scanning Electron

A series of different activated carbons of both honeycomb and disc type were prepared by chemical activation of coconut shells with zinc chloride at different concentrations, without the use of a binder. The structures were characterized by N2adsorption at 77 K and scanning electron microscopy (SEM), and also some samples were characterized by immersion calorimetry in benzene. These were subsequently used in the adsorption of phenol in aqueous solution. The experimental results indicat that activation with zinc chloride produced a large development of microporosity with a micropore volume of 0.38 to 0.79 cm3g-1, BET area between 725 and 1523 m2g-1and the capacity to adsorb phenol. In addition, the BET and Langmuir models were applied to isotherm data.

scholarly journals Entomological survey for identification of Aedes larval breeding sites and their distribution in Chattogram, Bangladesh

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Md. Sahidur Rahman ◽  
Md. Omar Faruk ◽  
Sumiya Tanjila ◽  
Nur Mohammad Sabbir ◽  
Najmul Haider ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Field Survey ◽  
Mosquito Control ◽  
Multiple Logistic Regression Analysis ◽  
Binary Logistic Regression ◽  
Breeding Sites ◽  
Entomological Survey ◽  
Different Types ◽  
Coconut Shells ◽  
Positive Properties

Abstract Background Studying the characteristics of Aedes mosquito habitats is essential to control the mosquito population. The objective of this study was to identify the breeding sites of Aedes larvae and their distribution in Chattogram, Bangladesh. We conducted an entomological survey in 12 different sub-districts (Thana) under Chattogram City, during the late monsoon (August to November) 2019. The presence of different wet containers along with their characteristics and immature mosquitoes was recorded in field survey data form. Larvae and/or pupae were collected and brought to the laboratory for identification. Results Different indices like house index, container index, and the Breteau index were estimated. The multiple logistic regression analysis was applied to identify habitats that were more likely to be positive for Aedes larvae/pupae. A total of 704 wet containers of 37 different types from 216 properties were examined, where 52 (7.39%) were positive for Aedes larvae or pupae. Tire, plastic buckets, plastic drums, and coconut shells were the most prevalent container types. The plastic group possessed the highest container productivity (50%) whereas the vehicle and machinery group was found as most efficient (1.83) in terms of immature Aedes production. Among the total positive properties, 8% were infested with Aedes aegypti, 2% with Aedes albopictus, and 1% contained both species Ae. aegypti and A. albopictus. The overall house index was 17.35%, the container index was 7%, and the Breteau index was 24.49. Containers in multistoried houses had significantly lower positivity compared to independent houses. Binary logistic regression represented that containers having shade were 6.7 times more likely to be positive than the containers without shade (p< 0.01). Conclusions These findings might assist the authorities to identify the properties, containers, and geographical areas with different degrees of risk for mosquito control interventions to prevent dengue and other Aedes-borne disease transmissions.

Feasibility studies of coconut shells biomass for downdraft gasification

2021 ◽  
Author(s):  
Sharan Deepak Menon ◽  
Koushik Sampath ◽  
Saravanan Sujit Kaarthik
Keyword(s):  
Feasibility Studies ◽  
Coconut Shells

Influence of graphene nanoplatelets content on the structure and properties of macroporous carbon foams prepared by organic colloidal templates

2013 ◽  
Vol 49 (5) ◽  
pp. 2063-2069 ◽  
Author(s):  
Hyounmyung Park ◽  
Junyoung Seo ◽  
Sungwon Hwang ◽  
Young-Mok Rhym ◽  
Sung Hyeon Baeck ◽  
...  
Keyword(s):  
Graphene Nanoplatelets ◽  
Structure And Properties ◽  
Carbon Foams ◽  
Macroporous Carbon

Silica direct evaporation: a size-controlled approach to SiC/carbon nanosheet composites as Pt catalyst supports for superior methanol electrooxidation

2015 ◽  
Vol 3 (47) ◽  
pp. 24139-24147 ◽  
Author(s):  
Lei Wang ◽  
Lu Zhao ◽  
Peng Yu ◽  
Chungui Tian ◽  
Fanfei Sun ◽  
...  
Keyword(s):  
Methanol Electrooxidation ◽  
Graphitic Carbon ◽  
Pt Catalyst ◽  
Catalyst Supports ◽  
Reduction Strategy ◽  
Coconut Shells ◽  
Size Controlled ◽  
Silica Ceramic

SiC/graphitic carbon nanosheet (SiC/GC) nanocomposites, with 17 nm SiC NPs dispersed on GC uniformly were synthesized via a novel vaporization–deposition–reduction strategy derived from coconut shells and silica ceramic chips, which can be used as excellent supports for Pt toward the MOR.

Thermal properties of copper-coated carbon foams

Carbon ◽  
2009 ◽  
Vol 47 (11) ◽  
pp. 2620-2626 ◽  
Author(s):  
Khalid Lafdi ◽  
Mohammad Almajali ◽  
Omer Huzayyin
Keyword(s):  
Thermal Properties ◽  
Carbon Foams ◽  
Coated Carbon

High Specific Strength Carbon Foam Prepared from Sucrose and Multi-Walled Carbon Nanotube

2015 ◽  
Vol 830-831 ◽  
pp. 545-548
Author(s):  
Rajaram Narasimman ◽  
Sujith Vijayan ◽  
Kuttan Prabhakaran
Keyword(s):  
Compressive Strength ◽  
Carbon Nanotube ◽  
Cellular Structure ◽  
Carbon Foam ◽  
Specific Strength ◽  
High Specific Strength ◽  
Multi Walled Carbon Nanotube ◽  
Uniform Dispersion ◽  
Carbon Foams ◽  
Maximum Compressive Strength

Multi-walled carbon nanotube (MWNT) reinforced carbon foams were prepared by thermo-foaming of MWNT dispersions in molten sucrose followed by dehydration and carbonization. The rheological studies showed that the uniform dispersion of MWNT was achieved up to 1.5 wt.%. The carbon foams showed cellular structure. The density of the carbon foams increased with an increase in the MWNT concentration up to 0.25 wt.% and then remained more or less constant. The maximum compressive strength of 4.9 MPa was achieved at the MWNT concentration of 0.5 wt.%.

scholarly journals Microstructural investigations of carbon foams derived from modified coal-tar pitch

Micron ◽  
2016 ◽  
Vol 89 ◽  
pp. 34-42 ◽  
Author(s):  
George Tzvetkov ◽  
Boyko Tsyntsarski ◽  
Konstantin Balashev ◽  
Tony Spassov
Keyword(s):  
Coal Tar ◽  
Coal Tar Pitch ◽  
Carbon Foams
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