scholarly journals Refused derived fuel pellets from municipal solid waste and rice husk

2019 ◽  
Vol 54 (4) ◽  
pp. 329-338
Author(s):  
MK Iqbal ◽  
A Nadeem ◽  
MT Butt
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bulk Density ◽  
Rice Husk ◽  
Retention Time ◽  
Mechanical Characteristics ◽  
Hydraulic Press ◽  
Quadratic Model ◽  
Fuel Pellets ◽  
Binder Concentration

The objective of this study was to optimize the parameters for the development of refused derived fuel (RDF) pellets from municipal solid waste (MSW) and rice husk by using Response Surface Methodology (RSM). In this a systematic study was conducted, where three parameters were varied according to RSM factorial design. The binder concentration (5-10%) pressure (700-1200 psi) and retention time (3-7 minutes) were used for RDF pellet development under hydraulic press, measured hardness bulk density (BD) and durability (DU). The T3 treatment results revealed the highest pellet hardness, bulk density, and durability 25 kg, 805 kg/m3, 99% respectively by application binder concentration (5%), pressure (1200 psi) and retention time (5 minutes). The experimental data on response variables were fitted into quadratic polynomial model using the multiple regression analysis and found that it was statistically significant quadratic model. The RDF physical chemical and mechanical characteristics were also evaluated and found their relationship between HHV, carbon, ash, DU, BD and energy density. The ash contents were inversely proportional to DU and HHV whereas DU was directly related to BD. Bangladesh J. Sci. Ind. Res.54(4), 329-338, 2019

scholarly journals Physical, mechanical and thermal properties of Crushed Sand Concrete containing Rubber Waste

2018 ◽  
Vol 149 ◽  
pp. 01076
Author(s):  
Guendouz Mohamed ◽  
Boukhelkhal Djamila
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Flexural Strength ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bulk Density ◽  
Mechanical And Thermal Properties ◽  
The Past ◽  
Rubber Waste ◽  
And Performance

Over the past twenty years, the rubber wastes are an important part of municipal solid waste. This work focuses on the recycling of rubber waste, specifically rubber waste of used shoes discharged into the nature and added in the mass of crushed sand concrete with percentage (10%, 20%, 30% and 40%). The physical (workability, fresh density), mechanical (compressive and flexural strength) and thermal (thermal conductivity) of different crushed sand concrete made are analyzed and compared to the respective controls. The use of rubber waste in crushed sand concrete contributes to reduce the bulk density and performance of sand concrete. Nevertheless, the use of rubber aggregate leads to a significant reduction in thermal conductivity, which improves the thermal insulation of crushed sand concrete.

scholarly journals UTILIZATION OF CONVENTIONAL AND NON-CONVENTIONAL ORGANIC SOURCES AND INDUSTRIAL BY-PRODUCTS FOR YIELD MAXIMIZATION OF BRINJAL IN COASTAL SOIL

1970 ◽  
pp. 16-18
Author(s):  
D. Venkatakrishnan
Keyword(s):  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Yield Attributes ◽  
Municipal Solid Waste Compost ◽  
Post Harvest ◽  
Lignite Fly Ash ◽  
By Products

This study was conducted to evaluate the response of brinjal (Solanum melongena L.) with conventional, non-conventional organic source, industrial by-products combined with inorganic fertilizers. The treatments imposed were T1 – Control (100% RDF), T2-100% RDF + Municipal Solid Waste Compost @ 5 t ha-1, T3 – 100% RDF + Municipal Solid Waste Compost @ 10 t ha-1, T­4 – 100% RDF + Vermicompost @ 2.5 t ha-1, T5 – 100% RDF + Vermicompost @ 5 t ha-1, T6 – 100% RDF + Rice Husk Ash @ 5 t ha-1, T7 – 100% RDF + Rice Husk Ash @ 10 t ha-1, T8 – 100% RDF + Lignite Fly Ash @ 5 t ha-1, T9 – 100% RDF + Lignite Fly Ash @ 10 t ha-1. There were nine treatments combinations replicated thrice in CRD. The soil was sandy in texture with available nitrogen, phosphorus and potassium of 257, 10.2 and 117 kg ha-1 respectively which fell in fertility status of low. The soil classified taxonomically as Typic Udisamments. The results showed that application of 100% RDF + Vermicompost @ 5 t ha-1 (T5) significantly increased yield attributes viz., fruit length (16.6 cm), fruit girth (15.2 cm), no. of fruits plant-1 (20.67), fruit weight (45.2 g) and fruit yield plant-1 (934.2 g plant-1). This treatment registered maximum quality attributes like ascorbic acid content (4.5 mg 100 g-1), crude protein (4.81%), drymatter of fruit (70.2 g plant-1) and dry matter of plant (81.3 g plant-1). The post harvest soil available N (148mgkg-1) and P (7.15mgkg-1)status was higher due to application of 100% RDF with Vermicompst @ 5 t ha-1 (T5).  The post harvest available K (75.58mgkg-1) status recorded higher in the treatment T9 which received 100% RDF with Lignite Fly Ash @ 10 t ha-1 (T9).

Innovative Two-Stage Process for the Recovery of Energy and Compost from the Organic Fraction of Municipal Solid Waste (MSW)

1993 ◽  
Vol 27 (2) ◽  
pp. 133-143 ◽  
Author(s):  
M. Kayhanian ◽  
G. Tchobanoglous
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Retention Time ◽  
Biogas Production ◽  
Pilot Scale ◽  
Gas Production ◽  
High Solids ◽  
Organic Fraction ◽  
Active Volume ◽  
Engineering Department

An innovative system for stabilizing the organic fraction of municipal solid waste (OFMSW) has been documented on a pilot scale at the Civil Engineering Department of the University of California at Davis. The system involves the combined methods of high-solids anaerobic digestion and aerobic composting for the recovery of energy and the production of compost from the OFMSW. The performance of the high-solids anaerobic reactor was monitored for three mass retention times. The anaerobic digester was operated under extreme as well as normal conditions. The performance of the aerobic compost unit was monitored based on the physical and chemical characteristics of the final humus by-product. In general, the combined process was very stable at a 30 d retention time and is capable of removing essentially all of the biodegradable fraction of the organic fraction of MSW. A biogas production level of up to 6 liters per liter of active volume of reactor was achieved. The process stability and gas production decreased slightly when the retention time was reduced to 15 d. The output from the second stage is a fine humus-like material with a thermal content of about 14.80 MJ/kg.

scholarly journals Improvement of Soil Quality Parameters by Municipal Solid Waste Compost Application in Clay-Loam Soil

2020 ◽  
Vol 8 (3) ◽  
pp. 603
Author(s):  
Orhan Yüksel ◽  
Yasemin Kavdır
Keyword(s):  
Hydraulic Conductivity ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bulk Density ◽  
Soil Samples ◽  
Experimental Plant ◽  
Clay Loam ◽  
Undisturbed Soil ◽  
Municipal Solid Waste Compost ◽  
Experimental Plots

Organic matter (OM) content of the soils should be improved for sustainable productions. Municipal solid waste compost (MSWC) is an organic material used in several countries to improve soil OM contents. This study was conducted to determine potential use of MSWC as soil amendment. Field experiments were conducted for two years with single MSWC treatments. Experiments were conducted on 18 plots in randomized complete blocks design with 3 replications. Six different MSWC doses (0, 40, 80, 120, 160 and 200 t ha-1) were applied to experimental plots. Compost doses were calculated in dry weight basis, applied to 21 m2 plots and sunflower was sown as the experimental plant of the study. Following the sunflower harvest, disturbed and undisturbed soil samples were taken from the experimental plots and soil samples were subjected to various analyses. Applied MSWC doses significantly increased soil OM contents, electrical conductivity (EC) and cation exchange capacity (CEC), aggregate stability (AS) and saturated hydraulic conductivity (Ksat) and reduced soil bulk density (BD). Effects of MSWC on soil pH were not found to be significant. Effects of MSWC treatments were more remarkable with increasing doses. MSWC treatments increased soil OM contents about 3 folds and increased CEC by about 25%. MSWC treatments significantly increased salt contents of the soils. Such increases were found to be significant at 1% level in the first year and 5% level in the second year. Increasing OM contents also increase soil aggregation, thus reduced bulk density and increased hydraulic conductivity. Correlation analysis revealed significant correlations between OM and AS. Present findings revealed that MSWC positively influenced physical and chemical characteristics of clay-loam soils of arid and arid climates, but salt contents should carefully be monitored in repetitive uses.

New fired bricks based on municipal solid waste incinerator bottom ash

2017 ◽  
Vol 35 (10) ◽  
pp. 1055-1063 ◽  
Author(s):  
R Taurino ◽  
E Karamanova ◽  
L Barbieri ◽  
S Atanasova-Vladimirova ◽  
F Andreola ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Mechanical Characteristics ◽  
Bottom Ash ◽  
Waste Incinerator ◽  
Municipal Solid Waste Incinerator ◽  
Sintering Process ◽  
X Ray ◽  
Fired Bricks ◽  
Solid Waste Incinerator

The main objective of this work was to study the sintering process and technological properties of new fired bricks based on high amount of post-treated municipal solid waste incinerator bottom ash and refractory clay. In addition, the effect of the minor addition of flux (Na2CO3) or reinforce (corundum) was also highlighted. Several methods were used to study the effect of compositions variations on the sintering process, structure and the mechanical characteristics of the test briquettes. Differential thermal analysis (TG/DTA) and dilatometry techniques were applied to study the thermal behaviour while scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy and high-temperature X-ray diffraction were used to elucidate the structure and the phase composition. The mechanical characteristics were estimated by micro-indentation, strength and various physical tests (porosity, linear shrinkage and water absorption, etc). The results highlight the possibility to use very high amount of municipal solid waste incinerator bottom ashes in the production of new fired bricks with good performances at all levels. It is also shown that the addition of additives managed the final properties, affecting the crystal phase formation, porosity and greatly the strength of the samples.

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