A short note: Effects of fludisation number and total air factor on the Combustion of Municipal solid waste of high moisture content in a fluidised bed

2012 ◽  
Vol 36 ◽  
pp. 403-405 ◽  
Author(s):  
Anwar Johari ◽  
Haslenda Hashim ◽  
Rozainee Taib ◽  
Ramli Mat ◽  
Mazura Jusoh
Keyword(s):  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Short Note ◽  
Fluidised Bed ◽  
High Moisture Content ◽  
High Moisture

Household Solid Waste Management in Monrovia, Liberia: Influencing Factors, Characteristics, and Management Solutions

2020 ◽  
Vol 46 (1) ◽  
pp. 77-86
Author(s):  
Victor Emery David ◽  
Jiang Wenchao ◽  
Daniel Mmereki
Keyword(s):  
Moisture Content ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Influencing Factors ◽  
Sustainable Management ◽  
Solid Waste Management ◽  
Household Waste ◽  
High Moisture Content ◽  
High Moisture

The ineffective management of household solid waste (HSW) in most developing cities in Africa including Monrovia has become a major issue threatening the environment and public health. In response to these waste challenges, developed countries have embarked upon major environmental reforms, and have made advances in best practices and sustainable management of their Municipal Solid Waste (MSW). However, in most developing countries like Liberia, such environmental reforms have not been initiated and therefore the situation has become compounded; this is due to several factors impeding the development of a sustainable municipal solid waste system. This study, therefore, aims to critically analyze the influencing factors of solid waste management; the characteristics of household waste and suggest management solutions for effective and sustainable management.<br/> Results from the analysis of data, using The Ordinary Least Square Regression (OLS) method estimates the average household waste per capita generation as 0.76kg/capita/day. Regarding the composition of the waste stream, the results show that 67% of the waste sampled from Monrovia is biodegradable and mostly comprised of high wet weight and high moisture content kitchen waste. On the other hand, the remaining percentage is mostly non-degradable but recyclable materials such as glass ceramics and metals. This suggests that due to the high moisture content in the waste, samples are suitable for composting and other mechanical and biological management options. Using the stratified sampling method, 300 households were chosen. Multiple regressions were conducted to determine the relationship between waste generation and socio-economic factors and these showed that the effect of income, household size and the environmental concern on HSW generation is statistically significant at a 1% significance. However, further findings revealed a negative relationship between income and HSW generation at a 1% level of significance. These findings provide new insight regarding the role of socio-economic characteristics affecting the generation of household waste in Monrovia.

scholarly journals Municipal Solid Waste (MSW) characterization for possible Waste-to-Energy (WtE) conversion in Zambia

2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Brian C Mushimba
Keyword(s):  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
High Energy ◽  
Production Costs ◽  
Waste To Energy ◽  
Manufacturing Companies ◽  
High Moisture Content ◽  
High Moisture ◽  
Cement Manufacturing

Coal has traditionally been relied upon as a good source of bulk energy in many pyro processes especially in cement manufacturing and thermal power generation. In Zambia, cement manufacturing, a key and growing industry, uses coal as the main source of energy for the pyro process in the cement kiln that converts raw materials to a semi-finished product called clinker. Despite the advantages that coal has over other sources of energy in this market including its high energy content and its easy accessibility, burning coal has significant known and documented disadvantages especially towards the environment and human health that give way to dissenting views on its continued use. In attempts to address the environmental effects of coal usage in cement manufacturing and consequently contribute to the lowering of production costs, Cement manufacturing companies have been pursuing the possibilities of coal substitution with Municipal Solid Waste (MSW). The MSW should however; conform to certain standards before it can be used in the substitution in order not to affect the quality of cement produced. This paper sought to characterize the Municipal Solid Waste in Lusaka to ascertain its conformity to internationally recognized standards in order to be used in coal substitution. The results show that the characterization of MSW showed that it could be a viable substitute for coal burning in cement manufacturing in Zambia. Apart from the high moisture content in the rainy season, the other readings were all favorable to its use as an alternate energy source. The high moisture content meant that during the pre-treatment for possible use in the cement manufacturing, pretreatment processes could be employed to help align the moisture content before its use as the substitute for coal in cement manufacturing.

scholarly journals Update on waste reduction performance by waste-to-energy incineration pilot plant PLTSa Bantargebang operations

2021 ◽  
Vol 922 (1) ◽  
pp. 012059
Author(s):  
I P A Kristyawan ◽  
Wiharja ◽  
A Shoiful ◽  
P A Hendrayanto ◽  
A D Santoso
Keyword(s):  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Pilot Plant ◽  
Waste Reduction ◽  
Alternative Solution ◽  
Waste To Energy ◽  
High Moisture Content ◽  
High Moisture ◽  
First Semester

Abstract Many big cities in Indonesia are facing the problem of municipal solid waste (MSW) disposal. PLTSa Merah Putih, a waste-to-energy incineration pilot plant, was built as an alternative solution to reduce waste. This study aims to evaluate the performance of PLTSa Merah Putih Bantargebang in reducing volume of waste. During the first semester of 2021, the pilot plant has been running for 174 days and a total of 5647.1 ton of waste was burned generating around 1000 ton of ash. Based on the feeding waste and generated ash, the pilot plant can reduce over 79% of waste, even with high moisture content. The furnace and grate temperature can be maintained at 800°C and 1000°C, respectively, to minimize harmful gases generation. This study showed that the waste reduction of PLTSa was comparable with the performance of other waste-to-energy pilot plants, which is in the range of 70-90%.

Combustion studies of high moisture content waste in a fluidised bed

2003 ◽  
Vol 23 (5) ◽  
pp. 433-439 ◽  
Author(s):  
K Suksankraisorn ◽  
S Patumsawad ◽  
B Fungtammasan
Keyword(s):  
Moisture Content ◽  
Fluidised Bed ◽  
High Moisture Content ◽  
High Moisture

Drying kinetics of processed natural coffee with high moisture content

2017 ◽  
Vol 12 (3) ◽  
pp. 400 ◽  
Author(s):  
Valdiney Cambuy Siqueira ◽  
Flávio Meira Borém ◽  
Guilherme Euripedes Alves ◽  
Eder Pedroza Isquierdo ◽  
Afonso Celso Ferreira Pinto ◽  
...  
Keyword(s):  
Moisture Content ◽  
Drying Kinetics ◽  
High Moisture Content ◽  
High Moisture ◽  
Kinetics Of

Objetivou-se, com o presente trabalho, propor um novo método de processamento e secagem, assim como avaliar o comportamento dos grãos submetidos a este processo, por meio da taxa de redução de água e do ajuste de diferentes modelos matemáticos aos dados experimentais da secagem. Os frutos colhidos no estágio maduro foram divididos em três lotes. O primeiro foi seco continuamente à temperatura de 40±1 °C. O segundo consiste na secagem do café natural até os teores de água de 0,56±0,02, 0,41±0,02, 0,28±0,02 e 0,20±0,02 decimal (base seca, b.s.), seguido de beneficiamento e secagem contínua nas temperaturas de 35±1 ºC e 40±1 ºC. O terceiro lote correspondeu à secagem contínua do café descascado e desmucilado na temperatura de 40±1 °C. Em todos os lotes, a secagem foi encerrada quando os grãos atingiram o teor de água de 0,12±0,05 (b.s.). Aos dados experimentais da secagem foram ajustados dez modelos matemáticos utilizados para representação da secagem dos produtos agrícolas. Além da representação da cinética de secagem foi avaliada a taxa de redução de água dos grãos. Conclui-se que a taxa de redução de água é maior para a temperatura de secagem de 40±1 °C, especialmente para maiores teores de água. O tempo total de secagem do café beneficiado com alto teor de água é expressivamente reduzido, quando comparado ao tempo de secagem completa do café natural. O modelo de Midilli descreve satisfatoriamente a cinética de secagem do café beneficiado.

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