Municipal Solid Waste Combustion Research Articles

In-situ measurements of temperature and emissivity during MSW combustion using spectral analysis and multispectral imaging processing

By using a novel multispectral imaging technology, the 2-D distributions of flame temperature and emissivity were measured in a 16 MW incinerator to co-fire municipal solid waste (MSW) and municipal sludge. A way to establish the relationship between the multispectral flame images and the temperature was proposed by combing the Newton iteration method and Hottel emissivity model. The results showed that the measured temperatures at different locations varied by 31.25% with a fixed steam evaporation rate, and 11.76% with different steam evaporation rates at a given port. The temperatures and emissivities decreased at upper locations due to the lower local soot particle concentration and the change of the measured flame temperatures with load were correlated with the MSW caloric values. Flame temperatures near the left wall were higher than those near the right wall. This deviation was caused by the high moisture content of municipal sludge that inhibited combustion. The emissivities of flame near the right wall were lower than those near the left wall due to the low fixed carbon in municipal sludge. The normalized flame emissivities between the left and the right walls indicated that obvious differences existed in the radiative characteristics of soot, which confirmed the uneven mixing of MSW and municipal sludge. Besides, a spectrometer system was used to measure the release of alkali metal elements including Na, K during the incineration process. The characteristic spectra showed that the alkali metal radiative intensity was related to the moisture content in the wastes. Overall, these results justified that the multi-wavelength thermometry was feasible for monitoring combustion in the MSW incinerator.

Morphology and nanostructure of flame-formed soot particles from combustion of typical municipal solid waste

The structural property of soot particles released during the pellet combustion of different municipal solid waste (MSW) was comparatively investigated through high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and X-Ray diffraction (XRD). The results showed under the same combustion condition, soot particles generated from different waste components have the same typical core-shell shape. But soot mass and aggregate morphology were strongly dependent on waste component material. When plastic (textiles) waste was burned, the soot obtained featured a much higher mass and more compact morphology with larger particle size compared to that from burning biomass and kitchen waste. Nanostructural characterization results revealed that paper and kitchen waste possessed the highest graphitization degree in soot, followed by wood waste, textiles, and plastic. Additionally, with the increasing addition of plastic in the mixed waste, the flame temperature was slightly reduced. And the soot was formed a lot and became more disordered in the nanostructure with shorter, more tortuous fringes and larger separation distances, which suggested a higher oxidation tendency. The AD1/AG ratio had a linear relationship with the fringe separation distance and fringe tortuosity, with R2 values of 0.824 and 0.847, respectively.

Characterization and Risk Assessment of Airborne Polycyclic Aromatic Hydrocarbons From Open Burning of Municipal Solid Waste

In order to reveal the pollution characteristics and risk level of polycyclic aromatic hydrocarbons (PAHs) exposed to air from open burning in China, PM2.5 samples were collected from the open burning of different types of municipal solid waste (MSW). The component of MSW differed from plastics, paper, wood and bamboo, and mixed garbage. A flue gas dilution sampling system was employed to simulate open burning testing on MSW samples from different functional urban areas. Emission characteristics and health risk assessments of PAHs in PM2.5 were analyzed. The results showed that the 16 PAHs were detected ranged from 16.0 to 10,386.9 ngm−3. The total PAH concentration of wood and bamboo wastes was the highest (24,512.1 ngm−3), while that in plastics was the lowest (4,084.7 ngm−3). Speciation composition of PAHs in PM2.5 with high-molecular-weight PAHs was dominant compared to low-molecular-weight PAHs. Health risk assessment showed that the proportion of samples with the lifelong lung carcinogenic risk value greater than 10–6 was 68.7% of the totals, most of the PAHs in PM2.5 had a certain risk of cancer. The speciation of Bap posed the greatest health risks to adults and children. The carcinogenic sequence of four components of wastes was as follows: wood and bamboo > mixed garbage > paper > plastics and the risk for adults was about 2.26 times higher than for children. Totally, the PAHs speciation of BaP, DBahA, BbF, IcdP, BaA, BkF, and Chr in PM2.5 from the open burning of MSW can bring high carcinogenic risk to human health by respiratory exposure, and the risk value of adults is higher than that of children. The findings show the different conclusion with the results of related researches on the environmental effect of waste incineration power plants or incinerators. Therein, it can provide supplementary data to evaluate the impact of open burning of MSW on ambient air quality.

A comprehensive high-resolution gridded emission inventory of anthropogenic sources of air pollutants in Indian megacity Kolkata

In this study, we present a first-ever effort made to develop an ultra-high-resolution gridded emission inventory (i.e. ~ 0.4 km × ~ 0.4 km) for the Indian megacity Kolkata. As the rising demand for fossil fuels based energy along with the spread of urban corridors have forced the anthropogenic activities to a mounting level, therefore determining the sources responsible is of paramount importance. This has worsened not only the regional air quality but also has an indirect effect on the global air quality. The spatial and temporal variation of the source requires an accurate estimation of the surface emission which is the most essential parameter to study the air quality, that positively has been fulfilled in this study. The annual emission for 2020 is calculated to be 37.2 Gg/yr of PM2.5, 61.4 Gg/yr of PM10, 222.6 Gg/yr of CO, 131.3 Gg/yr of NOx, 60.3 Gg/yr of SO2, 120.4 Gg/yr of VOC, 9.5 Gg/yr of BC and 16.8 Gg/yr of OC that prevails in the toxic air of megacity Kolkata. The present surface chemistry dataset will be the first line of detailed information regarding emission hotspots in the megacity that could be used as important tool for clean air mitigation strategies, input into the air quality modeling study to tackle environmental issues, and public health.Article HighlightsIdentification of sources of pollutants through spatially resolved high-resolution inventory in megacity Kolkata.Unlike transport and industrial sector, municipal solid waste burning has emerged as another big source.Present information is vital for policy making to mitigate air quality issues and modeling studies.

Flue gas torrefaction of municipal solid waste: Fuel properties, combustion characterizations, and nitrogen /sulfur emissions

Flue gas torrefaction (FGT) was proposed as the pretreatment of the municipal solid waste (MSW) combustion process to improve the fuel properties of MSW and achieve better combustion performance. The optimal FGT parameters were obtained at 300 ℃ and 30 min, with the energy-mass co-benefit index (EMCI) reaching the maximum of 23.38. FGT could significantly increase the heating value and energy density of MSW while reducing the H/C and O/C ratio. Then, the pyrolysis and combustion experiments were performed by tube furnace and TG-MS. The results proved the chemical compositions of MSW were altered, and the heat transfer was enhanced. With FGT, NOx and SO2 emissions could be reduced by 25.7 % and 52.4 %, respectively. This study provides an in-depth understanding of the mechanism of FGT and paves the way for the clean treatment and energy utilization of MSW.

Comparative analysis of environmental costs, economic return and social impact of national-level municipal solid waste management schemes in Thailand

This research comparatively investigates fifteen national-level integrated municipal solid waste (MSW) management schemes and determines the most preferable MSW scheme that attaches equal importance to the environmental, economic, and social impacts. The fifteen schemes are one business as usual (BAU) scheme, seven composting- and seven biogas production-oriented schemes. All the MSW schemes rely on incinerators and refuse derived fuel (RDF) processing for waste disposal. The environmental impacts and costs are quantified by Stepwise2006 based on ecoinvent database. The economic return is evaluated based on the net present value of the construction and operation cost. The affected local community area is the indicator of public perception toward the waste disposal projects (i.e., social impact). The analytic hierarchy process (AHP) is used to determine the most preferable scheme. The results showed that MSW combustion by incineration and RDF is the main contributor of environmental impacts. The environmental costs of composting schemes were lower than those of biogas production schemes. Total environmental cost of scheme 7 (i.e., 25% recycling, 50% decomposing, 5% biogas production, two incineration plants, and seven RDF plants) is the lowest (7492.63 billion THB2020). The cash inflow of BAU is lowest and the cash outflow is highest. In comparison with the biogas production schemes, the cash inflows and outflows of composting schemes are lower. Scheme 7 is the most preferable MSW management scheme, given the highest AHP priority score (0.228). Therefore, the composting-incineration-RDF scheme (scheme 7) should be adopted to treat biodegradable and combustible waste.

Sustainable Composites Using Landfill Bound Materials

The demand for new methods of diverting materials from waste streams has grown as sustainability and landfill reduction goals continue to be set. Municipal solid waste combustion and waste-to-energy (WTE) facilities reduce landfill waste accumulation but ash material by-products are commonly sent to landfills. In this work, we evaluate the potential for fly ash to be used as an inert filler in post-consumer recycled polyethylene to maximize landfill diversion of high-volume materials. Using fly ash from solid waste combustion as a filler increases landfill diversion, reduces associated costs, and offsets the cost of the recycling for post-consumer plastics by blending with a low cost filler. Characterization of the fly ash revealed high variability in ash particle composition and size, which was expected due to the municipal solid waste source. A series of composites were compounded incorporating fly ash into recycled linear low-density polyethylene utilizing various compatibilizers. The composites were characterized for molecular interactions, thermal properties, mechanical properties and changes in melt processing via infrared spectroscopy, differential scanning calorimetry, electromechanical testing, and oscillatory melt rheology, respectively. Mechanical testing of the fly ash composites indicated that the fly ash did not significantly change the Young’s modulus or yield stress and the addition of various compatibilizer additives increased impact strength. The impact strength of the neat polymer decreased drastically from ∼55 kJ/m2 to ∼20 kJ/m2 at 5 wt. % fly ash. However, the addition of PGME compatibilizer at 0.75 wt. % increased the composite’s impact strength to roughly the same value as the neat polymer. Thus, the addition of a compatibilizer could be used to alter the fly ash filler composite’s resistance to flexural shock. These results indicate that fly ash can be added to recycled linear low-density polyethylene up to 10% while maintaining physical properties.

BASIC: A Comprehensive Model for SO x Formation Mechanism and Optimization in Municipal Solid Waste (MSW) Combustion.

Municipal solid waste (MSW) incineration is one of the main techniques currently used for waste to energy (WTE) conversion in China. Although the sulfur content in MSW is lower than that in coal, its emission cannot be neglected due to environmental pollution, malodor, health problems, and global climate change. Therefore, it is particularly important to effectively predict and control the sulfur pollutants. In this study, a comprehensive model was developed and coupled with the full combustion process bed model bulk accumulated solids incineration code (BASIC) to investigate the formation and transformation processes of sulfur in MSW incineration. The submodels of the four stages in the MSW combustion processes; governing equations of mass, momentum, and energy conservation; and various chemical reactions were included in the model. Based on this model, the effects of different parameters on the formation of sulfur pollutants during the incineration process were studied under different operating conditions. The study finds that for SOX formation, initial temperature, primary air volume, and material particle size have significant impacts, whereas pressure shows a less significant effect. This article also considers H2S, COS, and CS2 formation under different conditions. An optimization study was performed to reduce SOX pollutants.

An approach for cancer risk-based apportionment of PM2.5 constituents and sources

The primary concern of PM2.5 (particle size of an aerodynamic diameter 2.5 micrometers or less) is its adverse health effects. As not all PM2.5 particles are equally toxic, a uniform PM2.5 mass control across the emitting sources may not provide the maximum health benefits. A new approach that apportions PM2.5 constituents, based on their toxicity and further realigns them into the sources, is developed and applied to Delhi city. In PM2.5, concentrations of 81 constituents in 11 apportioned sources were derived. Fourteen carcinogen constituents (Pb, Cr, Ni, Cd, As, Co and eight PAHs) were considered. The USEPA’s CompTox was used to obtain the cancer threshold concentration (Cca ) of the constituents. A product of constituent concentration and the inverse of Cca yielded constituent-wise cancer potential (CCPca ). The source-wise cancer potential was 20% for diesel, 19% for road dust, 16% for coal power plant, 13% for municipal solid waste burning and 8% for gasoline vehicles. Among 14 carcinogen constituents, Cr accounted for 20% of mass but showed the maximum CCPca . The net incremental lifetime cancer risk (NILCR) for all sources was 4.2 × 10−4. Diesel showed the maximum NILCR at 8.5 × 10−5 and liquid petroleum gas lowest at 8.8 × 10−6.

Particulate matter emission during MSW/RDF/WW combustion: Inorganic minerals distribution, transformation and agglomeration

In this study, experimental results on size distribution, inorganic element distribution, and inorganic minerals composition/transformation of particulate matter generated from solid waste combustion are revealed. The results showed that the PM10 generated from solid waste combustion exhibited a trimodal distribution. The yields of PM1 and PM10 shows a linear correlation with the (Na2O + K2O)/(SiO2 + Al2O3) ratio of solid waste ash. As the ratio of (Na2O + K2O)/(SiO2 + Al2O3) increases, the yields of PM1 and the proportion of PM1/PM10 increases. Among all solid wastes, the migration tendency of Si to PM10 is the smallest. The K in MSW and RDF has the highest migration tendency to PM10, and the migration tendency of heavy metal elements (Fe, Mg) in WW to PM10 was higher than that of alkali elements. The PM2.5–10 generated from MSW combustion were composed of a molten inorganic salt components (Na/K/Mg-Al-Si, Na/K/Ca-Cl and Na/K-S-O) and refractory spherical/irregular mineral components (Ca-Al-Si, Fe2O3, SiO2, Ca-Si, etc.). The difference in the relative content of CaO, SiO2, and Al2O3 in the solid waste ash led to different existence forms of Ca-Al-Si species in the ash particles generated during combustion. The agglomeration and coalescence mechanism of refractory coarse particles in PM10 were also revealed.

RECYCLING SLAG FROM COMBUSTION OF MSW INTO COMPLEX MINERAL FERTILIZERS USING POOR PHOSPHORITE

The article deals with the issue of secondary recycling municipal solid waste (MSW) into complex mineral fertilizers using domestic agricultural raw materials. Used in the recycling were slag from combustion of MSW and poor phosphorite. The nature of the decomposition of phosphorite 50-80% acid H2SO4 was studied at an acid consumption rate of 60-110%, of the consumption rate of acid H2SO4, which made it possible to identify optimal conditions used also for recycling binary raw materials. The increase in the content of assimilable Р2О5 has been uncovered in the liquid phase during the recycling binary raw materials in comparison with the decomposition of phosphorite under similar conditions. The role of MSW of slag in increasing the content of assimilable Р2О5 due to the improvement of conditions for the diffusion of molecules of the formed phosphoric acid to phosphorite particles is explained. The possibility of regulating the characteristics of the obtained complex mineral fertilizers by the ratio of the components of raw materials is shown.

Co-combustion of aged refuse and municipal solid waste under increased N2/O2 atmospheres: kinetics analysis, thermodynamic characteristics

ABSTRACT In this work, the kinetic behaviors and thermodynamic characteristics of aged refuse (AR) and municipal solid waste (MSW) under distinguishing conditions (blending ratios, heating rates, oxygen concentrations) had been investigated. Combining a low proportion of AR would promote the combustion of MSW, and 10%AR presented the best activation energy Eexp (166.62 kJ/mol). For the 10%AR, the heating rate of 40°C/min can reach the best comprehensive combustibility S (29.14%2°C−3min−2) and the burning temperature range had increased to 270.6°C727.6°C. When the oxygen concentration changed from 10% to 30%, the residual mass Mf dropped from 29.52% to 14.24%. This paper proposes a recycling strategy of AR by mixing combustion with MSW.

Fate of trace elements in Oxygen Carrier Aided Combustion (OCAC) of municipal solid waste

Oxygen Carrier Aided Combustion is a novel fluidized bed concept for burning waste. This study analyzed solid samples from an industrial OCAC application using municipal solid waste and the oxygen carrier ilmenite. The presence of oxygen carriers impacts the ash chemistry, which can influence corrosion and ash characteristics. By investigating samples obtained from industrial applications, unique and highly relevant information on the solid-state chemistry and the fate of important elements can be obtained. In total, 20 bottom ashes and 17 fly ashes were sampled over a period of 38 days. In a preceding study, the surface interaction between ilmenite and Zn, Cu and Pb was investigated. In this paper, the distribution of these elements throughout the particle cross-section and the influence of residence time has been studied using XRD, SEM-EDX and XPS. The results show that Zn is incorporated in the Fe-rich ash layer over time in the form of Zn ferrites, while Cu accumulates inside the ilmenite particles with time, and Cr is enriched in the magnetically separated bottom ash. Low concentrations of Pb were detected in the bottom ashes, suggesting that a significant part is released in the gas phase. The influence of temperature, bed material and reduction potential were evaluated using multicomponent, multiphase equilibrium calculations. It is shown that an ilmenite bed is less prone to form melts in comparison to a bed of silica sand and that the addition of sulfur could decrease the volatilization of Pb.

Simultaneous Quantitative Detection of HCN and C2H2 in Combustion Environment Using TDLAS

Emission of nitrogen oxides (NOx) and soot particles during the combustion of biomass fuels and municipal solid waste is a major environmental issue. Hydrogen cyanide (HCN) and acetylene (C2H2) are important precursors of NOx and soot particles, respectively. In the current work, infrared tunable diode laser absorption spectroscopy (IR-TDLAS), as a non-intrusive in situ technique, was applied to quantitatively measure HCN and C2H2 in a combustion environment. The P(11e) line of the first overtone vibrational band v1 of HCN at 6484.78 cm−1 and the P(27e) line of the v1 + v3 combination band of C2H2 at 6484.03 cm−1 were selected. However, the infrared absorption of the ubiquitous water vapor in the combustion environment brings great uncertainty to the measurement. To obtain accurate temperature-dependent water spectra between 6483.8 and 6485.8 cm−1, a homogenous hot gas environment with controllable temperatures varying from 1100 to 1950 K provided by a laminar flame was employed to perform systematic IR-TDLAS measurements. By fitting the obtained water spectra, water interference to the HCN and C2H2 measurement was sufficiently mitigated and the concentrations of HCN and C2H2 were obtained. The technique was applied to simultaneously measure the temporally resolved release of HCN and C2H2 over burning nylon 66 strips in a hot oxidizing environment of 1790 K.

Numerical Simulation of Combustion and Characteristics of Fly Ash and Slag in a “V-type” Waste Incinerator

This study is focused on a “V-type” waste incinerator for municipal solid waste (MSW) combustion. Computational fluid dynamics (CFD) methods are used to study the MSW combustion process. The characteristics of fly ash and slag are analyzed by using a laser particle analyzer, scanning electron microscope, X-ray fluorescence, and X-ray diffraction. The results show that the error between the CFD simulation data and measured data is less than 10%, and the changing trend of the combustion process is well-modeled. The fly ash mainly has an irregular spherical or ellipsoid structure, whereas the slag mainly has an irregular porous structure. The main constituents of the ash and slag are CaO and SiO2, along with heavy metal elements such as Cu, Pb, and Cr.

Influence of multi-temperature primary air on the characteristics of MSW combustion in a moving grate incinerator

Incineration is widely applied in municipal solid waste treatment and energy recovery, especially in China. The efficiency of energy recovery does not only depend on the design and construction of equipment, but it is also highly affected by the operation. Primary air temperature is a key parameter for incinerator operation, but there is still limited information about how primary air temperature affects MSW incineration. Fluid dynamic incinerator code (FLIC) and Fluent coupled model was used to study the influence of different primary air temperatures on MSW incineration in a moving grate incinerator with five zones of primary air feeding. Four different conditions were investigated and compared, namely, control case (20 °C for five grate zones), case 180 (180 °C for five grate zones), case I (190 °C for two front zones, and 180 °C for three behind zones) and case II (190 °C for two front zones, 170 °C for two middle zones, 160 °C for the last zone). The result demonstrated, as the air preheating temperature increased, so did the rate of moisture evaporation and volatile release, the latter of which could potentially lead to higher local maximum temperature in the furnace. It was possible, by using the different primary air temperature setup, to maintain a relatively high rate of moisture evaporation and total mass loss, while having a lower rate of volatile release. Ultimately, the multi-temperature primary air setup maintained a high time-average rate evaporation of moisture at 0.04230518 kg/m2 s, and lowers the time-averaged rate of volatile release to 0.0396193 kg/m2 s, thus, maintained the local maximum furnace temperature at 1685 °C. This concept can potentially be utilized in MSW incinerators to effectively evaporate moisture from MSW while keeping the local maximum temperature in the furnace to a reasonable temperature.

Particulate matter emission during municipal solid waste combustion: Submicron particulates formation mechanism

This paper presents an information on size distribution, inorganic composition and formation mechanism of submicron particles generated from MSW combustion. The XRD and CCSEM analysis results clearly showed that NaCl, KCl, K3Na(SO4)2, and SiO2 are the major inorganic mineral components in submicron particles. Submicron particles are mainly composed of organic components, alkali chlorides, alkali sulfates, and refractory inorganic minerals, but they account for different proportions in PM0.2 and PM0.2-1. There are five formation modes of submicron particles in MSW combustion: “condensation”, “nucleation”, “accumulation”, “crystallization” and “fragmentation”. The “condensation” mechanism mainly seen in PM0.2 composed of gas components, the “crystallization” and “fragmentation” modes formed by alkali salts and char particles are mainly present in PM0.2-1, the “nucleation” and “accumulation” modes coexist in PM0.2 and PM0.2-1. As the combustion temperature increased, the alkali chlorides and sulfates in the “crystallization” form decreased, and the inorganic mineral components in the “nucleation” form increased, which results in the variation of size distribution of submicron particles. In addition, volatile alkali salt nucleation experiments show that when alkali chloride and sulfate coexist in high-temperature flue gas, heterogeneous nucleation and agglomeration can significantly enhance the accumulation of particles in the range of 0.2–0.5 μm.

Development of a Software System for Selecting Steam Power Plant to Convert Municipal Solid Waste to Energy

A software system that enhances the selection of appropriate power plant capacity that will convert combustible municipal solid waste (MSW) into energy was developed. The aggregate of waste to be converted was determined and the corresponding heating value was established. The capacities of steam power plants’ components required for the conversion were determined, using thermodynamic mathematical models. An algorithm based on models used to determine the energy potential, the power potential of MSW, the capacities of the components of the steam power plant, were translated into computer soft code using Java programming language; saturated steam and superheated steam tables, together with the thermodynamic properties of the power plant required were incorporated into the soft code. About 584 tons of MSW having a heating value of 20 MJ/kg was the quantity of waste experimented for energy generation. This information was input into the software as data and was processed. Then, the software was able to predict 3245.54 MWh energy potential for the quantity of waste, and electrical power potential of 40.54 MW. The capacities of the steam power plant components that were predicted include 100.35 MW of boiler power, 40.54 MW of turbine power, and 59.80 MW of condenser power. The methodology adopted will make it easy for the managers in the waste-to-energy sector to appropriately select the suitable capacity of the required steam power plant that can convert any quantify of MSW at any geographical location, without going through the engineering calculation and stress or rigor involved in the plant capacity design. Moreover, the accuracy obtained for the software is greater than 99%.

Emission estimates and inventories of non-methane volatile organic compounds from anthropogenic burning sources in India

Comprehensive, spatially disaggregated emission inventories are required for many developing regions to evaluate the relative impacts of different sources and to develop mitigation strategies which can lead to effective emission controls. This study developed a 1 km 2 non-methane volatile organic compound (NMVOC) emission model for the combustion of fuel wood, cow dung cake, municipal solid waste (MSW), charcoal, coal and liquefied petroleum gas (LPG) in India from 1993 to 2016. Inputs were selected from a range of detailed fuel consumption surveys and recent emission factors measured during comprehensive studies of local burning sources. For the census year of 2011, we estimated around 13 (5–47) Tg of NMVOCs were emitted from biomass and MSW combustion in India. Around 54% of these emissions were from residential solid biofuel combustion, 23% from open burning of MSW, 23% from crop residue burning on fields and <1% from LPG for cooking. NMVOC emissions from residential combustion were shown to be highly sensitive to the amount of cow dung cake combusted and this acted as a key pollution source across the Indo-Gangetic Plain. The results of this study indicate that multiple mitigation strategies are required across several different categories of burning source to achieve effective NMVOC emission reduction. • New emission inventories developed for burning sources in India. • Estimates made for non-methane volatile organic compounds. • Estimates made for polycyclic aromatic hydrocarbons. • Pollution from cow dung cake combustion significant to North of India. • Waste and crop residue burning also significant pollution sources.

Determining the PM10 and PM2.5 Concentrations in Prayagraj City due to Solid Waste Burning using AERMOD

Abstract: Open burning of municipal solid waste (MSW) is a poorly-characterized and frequently-underestimated source of air pollution in developing countries. This paper estimates the air pollution happening from MSW burning in municipality areas of the Prayagraj, Uttar Pradesh, India. Air quality models (AQMs) are critical components for urban air quality management because they can predict and forecast air pollutant concentrations. Advanced AQM, such as AERMOD, has a well-established application in the developed world provided sufficient input data is available. However, in poor countries, it is limited due to a lack of adequate and trustworthy data. The present study is focused to assess the urban air quality due to municipal solid waste burning around a Sangam city Prayagraj in India using dispersion modelling. Keywords: PM10, PM2.5, Air Quality Modelling, AERMOD