Influence of bed height on the quality of rice husk ash in a fluidised bed combustor

2013 ◽  
Vol 16 (1/2) ◽  
pp. 65
Author(s):  
Mohd. Rozainee ◽  
Saik Peng Ngo ◽  
Arshad Adam Salema ◽  
Anwar Johari ◽  
Kean Giap Tan
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Fluidised Bed ◽  
Bed Height

Development of Ternary Concrete Utilizing Agricultural Waste Material

2022 ◽  
Author(s):  
Sunita Kumari ◽  
Dhirendra Singhal ◽  
Rinku Walia ◽  
Ajay Rathee
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Agricultural Waste ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Concrete Mix ◽  
Maize Cob

Abstract The present project proposes to utilize rice husk and maize cob husk ash in the cement to mitigate the adverse impact of cement on environment and to enhance the disposal of waste in a sustainable manner. Ternary concrete / MR concrete was prepared by using rise husk and maize cob ash with cement. For the present project, five concrete mixes MR-0 (Control mix), MR-1 (Rice husk ash 10% and MR-2.5%), MR-2 (Rice husk ash 10% and MR-5%), MR-3 (Rice husk ash 10% and MR-2.5%), MR-4 (Rice husk ash 10% and MR-2.5%) were prepared. M35 concrete mix was designed as per IS 10262:2009 for low slump values 0-25mm. The purpose is to find the optimum replacement level of cement in M35 grade ternary concrete for I – Shaped paver blocks.In order to study the effects of these additions, micro-structural and structural properties test of concretes have been conducted. The crystalline properties of control mix and modified concrete are analyzed by Fourier Transform Infrared Spectroscope (FTIR), Scanning Electron Microscopy (SEM), and X-Ray Diffraction (XRD). The results indicated that 10% Rice husk ash and 5% maize cob ash replaced with cement produce a desirable quality of ternary concrete mix having good compressive strength. The results of SEM analysis indicated that the morphology of both concrete were different, showing porous structure at 7 days age and become unsymmetrical with the addition of ashes. After 28 day age, the control mix contained more quantity of ettringite and became denser than ternary concrete. XRD analysis revealed the presence of portlandite in large quantity in controlled mix concrete while MR concrete had the partially hydrated particle of alite.

scholarly journals Potencial de aplicação do resíduo de cinza de casca de arroz

2020 ◽  
Vol 42 ◽  
pp. 48
Author(s):  
Marcela Trojahn Nunes ◽  
Fabiele Schaefer Rodrigues ◽  
Jocenir Boita
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Agricultural Waste ◽  
Environmental Cost ◽  
Characterization Techniques ◽  
Ash Residue

The use of agricultural waste has become a necessity due to its high environmental cost. As an example of this, we have rice husk ash (CCA), produced by the indiscriminate burning of rice husk, as well as the need to look for alternatives to reuse the waste sustainably, either by applying it to nanomaterials or by extracting SiO2 present in rice husk ash. This study addresses the use of characterization techniques for rice husk ash residue, showing the quality of SiO2 present in the residue.

scholarly journals Pengaruh tinggi dan kerapatan unggun pada kualitas pembakaran gas produser dari gasifikasi skala rumah tangga

2018 ◽  
Vol 11 (3) ◽  
pp. 166
Author(s):  
Anton Irawan ◽  
Hafid Alwan ◽  
Faroukiyah Mustika
Keyword(s):  
Rice Husk ◽  
Energy Demand ◽  
Energy Content ◽  
Flame Temperature ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Small Scale ◽  
Gas Combustion ◽  
Bed Height

The effect of bed height and density on producer gas combustion quality from house hold scale gasification.Increased energy demand caused the crude oil to be expensive and limited so that renewable energy could be a solution of the crisis energy in the future. Rice husk that produced from rice mill had potential as energy in the rural area due to had energy content around 3000-3500 kcal/kg. Rice husk had proximate analysis for  fixed carbon 15%, volatile matter 50%, ash 20%, and moisture 15% so that rice husk could be converted to the gas by gasification. Gas producer that was produced by gasification can be used for household fuel. The aim of this research was to observe influence of density and height of rice husk bed to the flame of the gas producer combustion in the small scale gasification. Small scale gasification was done in gasification stove  that had capacity 1000 g rice husk. Variations in this research were density of rice husk bed (85, 95, and 105 kg/m3) and height of rice husk bed (25, 40, and 55 cm). Parameter of quality of gas producer combustion was holding time of the flame temperature above 500 oC.  The results showed the combustion quality of the gas producer was influenced by density and height of rice husk bed.Keywords: rice husk, gasification, gas producer, bed height, bed density AbstrakPeningkatan kebutuhan energi menyebabkan minyak bumi menjadi mahal dan terbatas sehingga energi terbarukan dapat menjadi solusi untuk menggantikan minyak bumi pada masa mendatang. Salah satu sumber energi terbarukan adalah sekam padi  yang dihasilkan dari pengolahan padi dengan kandungan energi 3000-3500 kcal/kg sekam padi kering. Sekam padi  memiliki  komposisi karbon sekitar 15%, volatile matter 50%, abu  20%, dan kandungan air 25% sehingga sekam padi dapat dikonversi melalui proses gasifikasi. Dengan metode gasifikasi skala rumah tangga, gas produser yang dihasilkan dapat dipergunakan sebagai bahan bakar rumah tangga.  Tujuan penelitian ini adalah mengamati pengaruh tinggi dan kerapatan unggun terhadap kualitas pembakaran gas produser hasil gasifikasi sekam padi. Parameter kualitas pembakaran adalah pengukuran temperatur lidah api dengan  posisi tetap. Waktu tahan temperatur di atas 500 oC menjadi standar kualitas proses gasifikasi sekam padi yang dipengaruhi oleh kerapatan dan tinggi unggun sekam padi.  Gasifikasi dilakukan pada kompor gasifikasi skala rumah tangga yang mampu memuat sekam padi 1000 g. Variasi tinggi unggun adalah 25, 40, dan 55 cm serta kerapatan unggun 85, 95, dan 105 kg/m3. Hasil penelitian menunjukkan bahwa kualitas pembakaran gas produser dipengaruhi oleh tinggi dan kerapatan unggun.Kata kunci: sekam padi, gasifikasi, gas produser, tinggi unggun, kerapatan unggun

scholarly journals Statistical Analysis of Rice Husk Ash as a Construction Material in Building Production Process

2019 ◽  
pp. 1-8
Author(s):  
John U. Ezeokonkwo ◽  
Chukwuemeka D. Ezeliora ◽  
Echefuna C. Mbanusi
Keyword(s):  
Statistical Analysis ◽  
Production Process ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Process Analysis ◽  
Construction Material ◽  
Climatic Conditions ◽  
Estimation Methods ◽  
Confidence Estimation

This study considers the statistical analysis of rice husk ash as a construction material in building production process. The quality of concrete mixture is of inevitable concern to all stakeholders in the construction industry in the zone when the climatic conditions of the zone are considered. The mix ratio is examined and all the prevailing construction/production practices are considered statistically. The statistical tools employed are descriptive, normality, process statistical summary and confidence estimation methods of statistics. The tools portrays the necessary information in the data to understand what the data information for further production process analysis.

scholarly journals PENGARUH PENAMBAHAN ABU CANGKANG KEMIRI TERHADAP KUAT TEKAN BETON K-300

2020 ◽  
Vol 3 (1) ◽  
pp. 12
Author(s):  
Moh. Abdul Basit Minanulloh ◽  
Yosef Cahyo ◽  
Ahmad Ridwan
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Waste Materials ◽  
Normal Concrete ◽  
Cement Additive ◽  
Compressive Strength Of Concrete ◽  
Maximum Compressive Strength ◽  
Compressive Tests

K-300 concrete is concrete that has a characteristic compressive strength of 300 kg/cm2.  Many studies that use plantation and mining waste materials are simply wasted. These wastes are in the form of kemiri shell ash, rice husk ash, and others. in this study, kemiri shell ash as a cement additive, with variations in the addition of 5%, 10%, and 15% of the weight of cement to the quality of K-300 concrete. Concrete compressive tests carried out at the age of 7 and 28 days. The purpose of this study was to determine the compressive strength of concrete, the highest pressure strength, and the optimum percentage. Strong concrete pressure characteristics obtained at 28 days at a normal concrete variation 304.127 kg / cm, normal concrete variations with the addition of 5% “Abu Cangkang kemiri” 421,551 kg / cm, normal concrete variations with the addition of 10% “Abu Cangkang kemiri” 426,863 kg / cm2, and variations  normal concrete with the addition of 15% “Abu Cangkang kemiri” 428,210 kg / cm.  The results show that the optimum percentage of the addition of kemiri shell ash is 15% of the weight of cement with a maximum compressive strength of 428,210 kg/cm.  Beton K-300 adalah beton yang mempunyai kuat tekan karakteristik sebesar 300 kg/cm². Banyak penelitian yang menggunakan bahan – bahan limbah perkebunan dan tambang yang terbuang begitu saja. Limbah tersebut berupa abu cangkang kemiri, abu sekam Padi, dan lain- lain. Pada penelitian ini menggunakan abu cangkang Kemiri sebagai bahan tambah semen, dengan variasi penambahan 5%, 10%, dan 15%  dari berat semen terhadap mutu beton K-300. Uji tekan beton dilaksanakan pada umur 7 dan 28 hari. Tujuan penelitian ini adalah untuk mengetahui kuat tekan beton dan  kuat tekan tertinggi. Kuat tekan karakteristik yang diperoleh pada umur 28 hari pada variasi beton normal 304,127 kg/cm², variasi beton normal dengan penambahan 5% abu cangkang  Kemiri 421,551 kg/cm², variasi beton normal dengan penambahan10% abu cangkang Kemiri 426,863kg/cm², dan variasi beton normal dengan penambahan 15% abu cangkang Kemiri 428,210 kg/cm². Hasil penelitian menunjukkan bahwa presentase optimum dari penambahan abu cangang Kemiri  adalah sebesar15% dari berat semen dengan kuat tekan maksimum sebesar 428,210 kg/cm².

scholarly journals Application of Threaded System, Rice Husk Ash Addition, Filtering, and Geomembrane to Increase Salt Production in Ambulu Village, Cirebon

2021 ◽  
Vol 940 (1) ◽  
pp. 012024
Author(s):  
M Gozan ◽  
M I Alhamid ◽  
N Amir ◽  
M Efendy
Keyword(s):  
Rice Husk ◽  
Traditional Method ◽  
Rice Husk Ash ◽  
Production Systems ◽  
West Java ◽  
Salt Production ◽  
Traditional Process

Abstract Salt farmers in Indonesia generally carry out simple land processing to produce NaCl levels below 90% and productivity below 80 tons/ha. Several separate efforts have been made to increase the quantity and quality of salt in traditional salt production systems. This work examines the threaded system, additive addition, and geomembrane to increase salt production in Ambulu Village, Cirebon, West Java, Indonesia. The result showed that the quality of salt increases compared to the traditional process. The quality of the salt can be improved. The traditional method of observation contains 91% NaCl. Using a combination of Threaded applications and additives increases the NaCl content by up to 94%. Adding Geomembrane technology from the two previous technologies resulted in salt with a NaCl content of 96%. At the same time, the amount of salt production from Indonesia has also increased to 155 tons/ha, compared to the traditional method, which is 80-90 tons/ha.

Application of Residual Rice Husk Ash from Vietnam as a Supplementary Cementitious Material in Concrete

2011 ◽  
Vol 347-353 ◽  
pp. 2829-2833
Author(s):  
Le Anh Tuan Bui ◽  
Chun Tsun Chen ◽  
Chao Lung Hwang ◽  
Mintar Fransiscus
Keyword(s):  
Co2 Emissions ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cementitious Material ◽  
Control Specimen ◽  
Supplementary Cementitious Material ◽  
Future Studies ◽  
Strength And Durability ◽  
Disposal Problem

The residual RHA from Vietnam is used to test the likely application in cement and concrete. The characteristics, quality and influence of RHA on the quality of concrete are investigated in this investigation. The workability, strength and durability of concrete added with ground RHA satisfy with the relevant standards and requirements. It indicates that the ground RHA in this study can be used as a good supplementary cementious material. Therefore, it is possible to obtain RHA concrete with comparable properties than those of the control specimen (without RHA) with a lower consumption of cement, thus reducing the CO2 emissions during the production of cement and the environmental and disposal problem of the ash can also be diminished. Moreover, while the results will be able to substantiate the viability of application of RHA in concrete industry under the prevailing conditions in Vietnam, they are also expected to be especially useful for future studies on RHA in a specific condition in this country.

Use of Rice Husk Ash to Treat Simulated Agricultural Cultivation Wastewater

2013 ◽  
Vol 652-654 ◽  
pp. 1609-1613
Author(s):  
Jun Xia Liu
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Heating Temperature ◽  
Removal Rate ◽  
Initial Solution ◽  
Laboratory Scale ◽  
Solution Ph ◽  
Time Solution ◽  
N Removal

This laboratory-scale study explored the use of rice husk ash (RHA) as absorbent to stabilize and solidify the simulated agricultural cultivation wastewater. Various factors including the shaking time, solution pH, the dosage of absorbents and the temperature of the heating were taken into account and promising results obtained. The results showed that the RHA at 300°C of heating temperature has a better efficiency on the removal of COD and NH3-N. The initial solution PH of 5~6 was most favorable for COD and NH3-N removal. The removal rate of COD and NH3-N is nearly 25% and 18% respectively under the conditions of the pH=5.5, shaking time of 30 minutes and quality of RHA of 6.0g. The results suggested that absorption treatment of simulated agricultural cultivation wastewater with RHA is an effective method to remove the COD and NH3-N.

scholarly journals KONSENTRASI ABU SEKAM PADI TERHADAP KUALITAS MINYAK KOPRA

2019 ◽  
Vol 4 (1) ◽  
pp. 9-15
Author(s):  
Irwan Irwan ◽  
Nur Alam ◽  
Asrawaty Asrawaty
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Rice Husk ◽  
Oil Recovery ◽  
Free Fatty Acid Content ◽  
Acid Content ◽  
Rice Husk Ash ◽  
Fatty Acid Content ◽  
Randomized Design

This study aims to determine the effect of the concentration of the use of rice husk ash on the quality of copra oil and obtain the concentration of rice husk ash which has the best influence on the quality of copra oil. This research was carried out in the laboratory of Agro-Industry Faculty of Agriculture, University of Tadulako Palu. This study uses a Completely Randomized Design (CRD). The treatment that was tried was rice husk ash consisting of 6 concentration levels namely 0, 5, 10, 15, 20 and 25% (v / v). Each treatment was repeated 3 times so that there were 18 observation units. The parameters observed were oil recovery, water content, free fatty acid content and degree of oil clarity. The data obtained were analyzed by variance, when showing the effect continued with the BNJ test at the level of 5%. The results showed that the treatment of rice husk ash concentration had a very significant effect on recovery, moisture content, free fatty acid content and clarity of copra oil. the concentration of rice husk ash concentration of 20% gives a better influence on the quality of copra oil.

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