combustion residue
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2022 ◽  
Vol 2163 (1) ◽  
pp. 012008
Author(s):  
R J Gallardo Amaya ◽  
J Coronel Rojas ◽  
N J Cely Calixto

Abstract The combustion of coal in Hoffman-type furnaces generates ash as one of the process residues. This research seeks to make use of this residue to improve plastic subgrade soils in tertiary roads, considering that in Colombia a large percentage of these are not paved. A soil with high plasticity has been selected to make mixtures with ash dosages that vary from 0% to 15% with respect to the dry weight of the soil. To determine the variation of the physical and mechanical properties of the soil-ash mixtures tests of consistency limits, compaction tests, and California bearing ratio were carried out. The results showed that the mixture in which 12% of the coal combustion residue is added to the soil, as a percentage for the dry weight of the soil, has a better physical behavior and bearing capacity than the soil in its natural state. obtaining an increase of up to 75% in the California bearing ratio.


2021 ◽  
Vol 1 (2) ◽  
pp. 164-168
Author(s):  
Arif Setyo Nugroho ◽  
Didik Achadi W ◽  
Y Yulianto Kristianto

The implementation of community service is carried out by providing solutions for fried food traders who sometimes experience problems, especially regarding the process of making merchandise for sale. The problem that arises is how to utilize solid waste from biomass in the form of wood as fuel when the process of making fried food, the hope is to reduce production operational costs and reduce waste around. The solution given is to use a biomass waste fuel stove, namely wood or charcoal, a stove with a gasification system. The utilization of wood waste and biomass as fuel can be a solution when LPG is scarce or the availability of wood waste is abundant. By calculation, using wood waste for cooking requires approximately 6 kg, economically it is cheaper because it utilizes biomass waste that is around. The disadvantage of using wood waste fuel is regarding the combustion residue, namely ash.


Author(s):  
Azhagurajan Arumugasamy ◽  
Prakash Lakshmana Pandian ◽  
Jeyasubramanian Kadarkaraithangam
Keyword(s):  

2021 ◽  
Vol 5 (1) ◽  
pp. 17
Author(s):  
Junaidi Junaidi ◽  
Eddy Kurniawan ◽  
Abdika Lasmana

<em>The amount of household waste and B3 from oil machine  waste have been increasing along with the increasing of polulation and the number of vehicles.</em> <em>This waste can be used as a source of energy. The aim of this research was to analize the</em> <em>air flow rate and mass flow rate of fuel in the incinerator oil machine waste using a burner furnace by conducting several variations of the experiment with variations in air velocity of 10,4 m/s (B1), 13,4 m/s (B2) and 14,3 m/s (B3) and fuel flow rate of 0,00408 l/s (A1) and 0,00838 l/s (A2) with fuel valve openings 1/2 and 1/4. The test results showed that the highest temperature was 1021,5<sup>0</sup>C in the A2-B3 experiment with 45 minutes and the lowest temperature was obtained in the A1-B1 experiment which was 840,5<sup>0</sup>C at the same time. In the incinerator test, the burning of dry plastic waste weighing 12 kg of waste burns out in 34 minutes with a temperature ratio for the burner furnace which is 780,9<sup>0</sup>C and the incinerator chamber space is 480,7<sup>0</sup>C and the combustion rate is 21,42 kg/hour. the yield of residual combustion is 9,32% and the incinerator combustion eficiency is 90,68% and for dry leaf waste weighing 8 kg the waste is burnt out in 20 minutes with a burner furnace temperature ratio of 712,3<sup>0</sup>C and incinerator chamber space of 443, 2<sup>0</sup>C and the combustion rate of 24,24 kg / hour and the yield of combustion residue is 96,94%.</em>


2020 ◽  
Author(s):  
Youngil Lee ◽  
Laxman Singh ◽  
Dev Kumar Mahato ◽  
R.N. Rai ◽  
Ashok Kumar Gupta

Abstract A solution based economically low cost, eco-friendly and energetically advantageous alternative route for the fabrication of ultrafine LiFe0.95Ti0.05PO4 and LiFePO4, polycrystalline material by semi-wet combustion and sol-gel synthesis is presented. The thermal analysis, crystal structure, morphology and composition of the materials were investigated using different physio-chemical characterizations. TG/DTA, X-ray diffraction, TEM, SEM, EDX, and XPS. The route required auto-combustion of an aqueous metal nitrate solutions in air with the aid of citric acid and is efficient for the fabrication of high quality, LiFe0.95Ti0.05PO4 and LiFePO4 at low temperature, in the combustion residue itself. On a micro-structural studies the grain size was seen in submicron-size that was acquired in a long-established sol-gel combustion and succeeding calcination method. Consequently, the present method reported can yield the ultrafine LiFePO4 and LiFe0.95Ti0.05PO4 at moderate temperature and is look forward to be applicable for other iso-structural polycrystalline materials.


Author(s):  
U. Rilwan ◽  
A. A. Abbas ◽  
S. Muhammad

Swampy agricultural soils could be contaminated as a result of accumulation of heavy metals through emission from industrial areas, mines tailings, metal wastes, gasoline, paints, fertilizers, manure, sewage sludge, pesticide, waste water irrigation, coal combustion residue, spillage of petrochemicals and atmospheric deposition. This study aimed at evaluating the carcinogenic and non-carcinogenic risk of the study area using X-Ray fluoroscopy. The results shows that, mean concentration level in the area was in decreasing order Ni(525) > Cu(515.9) > Zn(367.6) > Cr(336.6) > Cd(260.9) > Pb(219.5) > As(18.9). The Hazard Quotient (HQ) was all recorded to be low except ingestion adult which is higher than unity. The Hazard Index (HI) was also recorded to be 2.3 a value greater than one (>>1). This makes non-carcinogenic effects significant to the population and poses serious effects in the area under study. The total excess life cancer risk were found to be (5.0 x 10-2), a value greater than that of U.S (1.0x10-4 to 1.0x10-6) and above that of South Africa (5.0x10-6). This implies that there is a probability that one person in 1,000 may be affected. Regular monitoring and evaluation of the soils and the crops cultivated at the sample locations is recommended.


2020 ◽  
Vol 328 ◽  
pp. 04001
Author(s):  
Juraj Trnka ◽  
Jozef Jandačka ◽  
Michal Holubčík

The correct course of the combustion process has a great influence on several output parameters. In addition to the impact on the performance and efficiency of the device, the impact on the formation and properties of gaseous emissions and solid residue is particularly noticeable. The solid combustion residue, in particular in the form of ash, remains trapped as the final product after combustion in the incinerator or may be released to the outside environment. Improperly, combustion can form two negative extremes. The first extreme is the formation of too fine dust particles of ash and solid pollutants escaping into the air as dangerous emission substances for human and other organism’s health. The second is the failure to burn larger pieces of fuel or sinter them into clumps, which can subsequently damage the combustion device or reduce the efficiency of combustion. This article aims to examine the various factors influencing the impact of combustion in different types of combustion plants on the properties of the resulting solid fuel residues and further possibilities of their use and effects on the environment.


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