Oxy-fuel co-combustion dynamics of phytoremediation biomass and textile dyeing sludge: Gas-to-ash pollution abatement

Wu, Xieyuan; Liu, Jingyong; Wei, Zebin; Chen, Zihong; Evrendilek, Fatih; Huang, Wenxiao

doi:10.1016/j.scitotenv.2022.153656

Cited by 45 publications

(9 citation statements)

References 59 publications

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“…Previous studies also report similar trends. 18,23,31 The obtained residue ash content of CM is slightly lower, i.e., 39.3%, than 43.4% of TWS, but comparatively higher than that reported previously. 18 The residue ash content depends on various factors, i.e., types of cattle feed and the presence of foreign and inorganic residue mixed with the CM.…”

Section: Resultscontrasting

confidence: 51%

Valorization of Textile Sludge and Cattle Manure Wastes into Fuel Pellets and the Assessment of Their Combustion Characteristics

Gadhi,

Mahar,

Qureshi

et al. 2023

ACS Omega

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The textile wastewater sludge (TWS) treatment and disposal are environmentally challenging due to toxic organics and metals. At the same time, cattle manure (CM), with better combustion performance, i.e., calorific value and uniform burning capability, is still underutilized in many parts of the world. This study evaluated and assessed the TWS and CM blending compatibility to convert them into fuel pellets for the direct combustion option and to stabilize toxic contaminants in TWS. After initial drying, grinding, and particle size control of the raw TWS and CM, both were blended at different ratios. The blended and nonblended TWS and CM samples were converted into pellets and analyzed for proximate and ultimate analyses, namely, moisture content, fixed carbon, CHNO, gross calorific value (GCV), bulk density, ash content, and metals, to evaluate the efficacy for energy applications. Out of three blended ratios, i.e., 75:25 (W/W%; CM/TWS), 50:50, and 25:75, the 75:25 blended pellet composition was found appropriate for fuel application. For the 75:25 blend, the obtained GCV was 12.77 MJ/kg, elemental carbon was 27.5%, volatiles were 41.7%, and residue ash was 42.8% of the total weight. Moreover, the blending ratios of 75:25 and 50:50 revealed that elemental and metal (Fe, Cu, Zn, Ni, Cr, Na, Mg, Mn) concentrations in TWS were stabilized to below threshold limits in the obtained residue ash for safe handling. The explored methods of TWS and CM waste processing, blending, and pelletization proposed a new technique for their sustainable waste valorization into energy sources.

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Section: Resultscontrasting

confidence: 51%

Valorization of Textile Sludge and Cattle Manure Wastes into Fuel Pellets and the Assessment of Their Combustion Characteristics

Gadhi,

Mahar,

Qureshi

et al. 2023

ACS Omega

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“…The trend of the TG curves remained almost unchanged with the increased sorting ratio of household food waste from 0 to 30%. The combustions were divided into the following four stages: the first stage of water evaporation at 40–240 °C, the second stage of degradation and combustion of volatile matter at 240–324 °C, the third stage of the formation and combustion of chars at 324–500 °C, and the fourth stage of the degradation of inorganic components and residual carbon above 500 °C . The rapid decline of the second TG curve and the corresponding peak of DTG were mainly due to the cracking of alkanes, olefins, and other flammable small molecular compounds from the polymer .…”

Section: Results and Discussionmentioning

confidence: 99%

“…residual carbon above 500 °C. 21 The rapid decline of the second TG curve and the corresponding peak of DTG were mainly due to the cracking of alkanes, olefins, and other flammable small molecular compounds from the polymer. 22 Though household food waste was sorted out by the ratio of 0, 10, 20, and 30%, the corresponding temperature of the DTG maximum weight loss rate was 317.85, 317.69, and 316.78 °C, respectively, which were similar compared to the unsorted temperature of 318.67 °C.…”

Section: Kinetics Analysismentioning

confidence: 99%

Research on the Combustion Performance of Municipal Solid Waste in Different Sorting Scenarios: Thermokinetics Investigation via TG–DSC–FTIR–MS

Li,

Zhang,

Jia

et al. 2023

ACS Omega

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Waste sorting is regarded as one of the most important strategies for municipal solid waste (MSW) management. The changes in the combustion parameters after MSW sorting had a significant impact on the actual operation of the boiler. In the present study, the effects of heating rate on combustion characteristics and dynamics of MSW in different sorting scenarios were studied using the thermogravimetry (TG)− differential scanning calorimetry (DSC)−Fourier transform infrared (FTIR)−mass spectrometry (MS) technique. TG−DSC analysis showed that the heat released from MSW combustion at different heating rates ranged from 1394.1 to 4130.1 J/g. According to the TG−DTG curves, the combustibility of 30% sorted MSW was increased by 1.2 times compared to that of the unsorted scenario. In the 30% sorted scenario, the average activation energies were estimated to be 161.24 and 159.93 kJ/mol based on the Flynn−Wall−Ozawa (FWO) and Kissinger−Akahira−Sunose (KAS) methods, respectively. Based on the Coats−Redfern (CR) method, the minimum activation energies for unsorted and 20% sorted scenarios were 148.74 and 135.53 kJ/mol at 523 to 606 K, respectively, while they were 29.42 and 33.22 kJ/mol at 606 to 780 K. XRF analysis showed that the alkali and alkaline earth metal oxides in the ash contributed to a high risk of slagging and scaling. This work can provide a scientific basis for the real situation of MSW incineration.

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“…Clean biomass energy partly solves the energy shortage and reduces the emissions of pollutants (Yang et al, 2022). Combustion is an effective way of biomass utilization and approximately 90% of bio-energy is produced via biomass combustion (Wu et al, 2022). Fluidized-bed combustion is widely applied due to its high e ciency in mass-heat transfer (He et al, 2022;Lin et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

Guo¹

2023

Preprint

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Thermal weight tests and fluidized-bed experiments were performed to analyze the joint effect of biomass size and level of excessive gas during combustion. Results showed that both particle size and excessive gas have great impact on biomass combustion. Small-size biomass presents the highest volatilization and burning rate, and can be easily fluidized than that of larger-size. Particle size and excess air jointly determine the fluidization pattern and temperature profile, thereby affecting the distribution of unburned carbon and gaseous pollutants. For different biomass particle, the minimum unburned carbon concentration is obtained at an excess air of 25%, 50% and 75%, respectively. Increasing particle size or decreasing excess air leads to reduced emission of NO but increased emissions of CO and CxHy. The increasing excessive gas reduces the heat loss of medium and large particles, and greatly promote their combustion .

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Oxy-fuel co-combustion dynamics of phytoremediation biomass and textile dyeing sludge: Gas-to-ash pollution abatement

Cited by 45 publications

References 59 publications

Valorization of Textile Sludge and Cattle Manure Wastes into Fuel Pellets and the Assessment of Their Combustion Characteristics

Valorization of Textile Sludge and Cattle Manure Wastes into Fuel Pellets and the Assessment of Their Combustion Characteristics

Research on the Combustion Performance of Municipal Solid Waste in Different Sorting Scenarios: Thermokinetics Investigation via TG–DSC–FTIR–MS

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

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