November 2024
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13 Reads
Journal of Environmental Chemical Engineering
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Publications (23)
July 2024
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29 Reads
Renewable Energy
Pyrolysis of the pineapple waste biomass using an atmospheric pressure microwave plasma ensures satisfactory syngas production as a renewable energy source. The pineapple waste biomass samples used in the study were crowned and peeled in dry and wet conditions. The study used Taguchi experimental methods to find the optimum parameters for the experiment. Material mass was the most influential parameter, followed by input power, carrier gas flow, and material type. Increasing input power can reduce carbon dioxide emissions while increasing the production of carbon monoxide and hydrogen. The syngas production with 800 and 1000 watts power peaked for 6 and 7 minutes, respectively, while the plasma with 1200 power peaked at 5 minutes. The wet pineapple waste sample with 1200 watts had the highest syngas molar ratio (H2/CO) output, the wet peel sample reached 4.18, and the wet crown sample reached 4.00. The dry sample had a lower ratio, with only 2.43 for the pineapple peel and 2.42 for the pineapple crown. The highest energy efficiency of biomass conversion is 72.59%, achieved by a dry crown sample with 1000 watts, followed by a dry crown sample with 1200 watts power of 72.01% efficiency. This finding shows that pineapple waste can be a viable feedstock in syngas production using an atmospheric pressure microwave plasma system with a rapid pyrolysis process and without catalyst added. It contributes to producing renewable energy and sustainable agricultural practices, reducing the environmental impact of conventional waste disposal methods, chemical costs, and carbon emissions to the environment.
April 2024
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59 Reads
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3 Citations
Chemosphere
March 2024
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93 Reads
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1 Citation
Journal of Environmental Chemical Engineering
January 2024
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12 Reads
January 2022
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179 Reads
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18 Citations
The Science of The Total Environment
Ocean life forms are fundamentally well adapted to natural environmental variations, and they can even tolerate extreme conditions for a short time. However, several anthropogenic stressors are causing such drastic changes in the ocean ecosystem. First, the review attempts to outline the impact of climatic and non-climatic stressors on ocean life, and it also outlines the synergistic impact of both stressors. Then the impact on human health caused by the damage of the marine ecosystem has been discussed. Furthermore, the type of prior studies and current mitigation adaptation programs have been presented. Finally, some perspectives about future research and mitigation adaptation are offered.
January 2022
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289 Reads
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32 Citations
Aerosol and Air Quality Research
Organophosphate flame retardants (OPFRs) have been adopted as safer alternatives to polybrominated biphenyl ether flame retardants. However, because of their ubiquitous presence in the environment and the growing evidence of health risks, there has been growing research interest in understanding the fate and effects of these compounds in the environment. This review focuses on the current knowledge of OPFRs in the atmosphere. There is no consensus on the target OPFR for analysis, making comparisons challenging. However, we can still conclude that OPFRs partition mainly in the particulate phase, and chlorinated-OPFRs are the main compounds in the atmosphere. The general concentration trends from the literature were: PM2.5 > TSP > air. However, the gas-phase OPFRs in the published studies might be significantly underestimated because of sampling artifacts. OPFRs were also found in remote environments in Antarctica, the Arctic, and high mountains, suggesting long-range transport potential. For example, concentrations up to 92.3 ± 13.8 pg m–3 in the air have been measured in the Antarctic. Lastly, atmospheric transformations of some OPFRs have been reported as more toxic and persistent than parent compounds, indicating additional risk. However, they are currently not measured or included during risk assessment.
January 2022
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79 Reads
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13 Citations
Aerosol and Air Quality Research
The scientific society is progressively aware of the adverse health effects caused by polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs (nitro-PAHs) from stationary sources, especially waste incinerators. They are mutagenic, persistent in the environment, and cause diseases and mortality worldwide. Nitro-PAHs have a higher carcinogenic potential than their parent PAHs; however, the scientific community's understanding of their properties and quantities in different matrices is still rudimentary. This is due to their infinitesimally lower concentrations in the ambient air and other environments compared to their parent PAHs. Herein, the limitations of most pretreatment and detection methods to quantify them are highlighted. The evolution of the state-of-the-art pretreatment and quantification techniques applied to evaluate PAHs and nitro-PAH concentrations accurately are discussed. This review highlights typical concentrations of PAH and nitro-PAH emitted from stationary sources especially waste incinerators. Formation processes, gas-particle partitioning, and indicative congeners are mentioned. The role of APCDS in controlling PAHs and nitro-PAHs and their fate in the environment are highlighted. Finally, challenges and an outlook on the research field are provided. The improved knowledge developed herein helps to understand the potential mutagenicity threat posed by PAHs and nitro-PAHs in the ambient air and other environments. © 2022, AAGR Aerosol and Air Quality Research. All rights reserved.
January 2022
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18 Reads
Aerosol and Air Quality Research
January 2022
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14 Reads
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3 Citations
Aerosol and Air Quality Research
Citations (16)
... Vehicle emissions contain pollutants, such as nitrogen oxides (NOx), carbon monoxide (CO), sulfur dioxide (SO2), carbon dioxide (CO2), hydrocarbons (HCs), particulate matter, and volatile organic compounds (VOCs). Among them (CO) make large composition of the vehicle exhaust and (NOx) cause smog which affect environmental health adversely (Zamorategui-Molina et al., 2021;Biswas et al., 2021;Liu et al., 2022). Leaves are the part of plants have direct contact with air pollutants than the other parts of the plants, such as stems and roots (Shafiq et al., 2009). ...
- Citing Article
January 2022
Aerosol and Air Quality Research
... On the other hand, N-PAH concentrations were below the detection limit in all the coffee treatments. N-PAHs can form via either a primary pathway involving high temperatures and electrophilic nucleating with NO2 + or a secondary pathway involving homogenous gas-phase nitration reaction of PAH and gas-particle heterogenous pathways (Nagato, 2018;Lee et al., 2022b). However, these pathways have only been studied in combustion processes and in the atmosphere and are not verified in roasting processes. ...
- Citing Article
- Full-text available
January 2022
Aerosol and Air Quality Research
... Gas-particle partitioning (Suehring et . Contrarily, other reports conclude the higher OPEs concentration occurred on ne particles than coarse particles (Kung et al., 2022;Zhang et al., 2020). It appears association with the species and concentration of detected OPEs, the physico-chemical properties, octanol-air partition coe cient (K OA ) is consider as a crucial factor affecting partition behavior . ...
- Citing Article
- Full-text available
January 2022
Aerosol and Air Quality Research
... Conventional plastics, derived predominantly from fossil fuels, have overwhelmed our ecosystems due to their non-biodegradable nature (Baranwal et al. 2022;Ibn-Mohammed et al. 2021). They persist for centuries, causing irreparable damage to marine life, wildlife, and human health (Dermawan et al. 2022;Gallo et al. 2020;Sahu et al. 2023a, b, c). As we stand at a critical juncture, the exploration of alternative materials becomes imperative for a sustainable future. ...
- Citing Article
January 2022
The Science of The Total Environment
... Certain meteorological factors, including precipitation and wind speed, may influence the levels of particles in the atmosphere. For example, frequent rainfall may reduce the concentrations of PM in the atmosphere [47]. Previously, precipitation was reported to result in a reduction in indoor PM 2.5 levels in a study conducted in Durban [16]. ...
- Citing Article
January 2021
Aerosol and Air Quality Research
... In summary, the presence of OPFRs in the atmosphere could be viewed as a combination of production and consumption of the OPFRs, physicochemical properties of the OPFR, and meteorological conditions. Atmospheric processes including photodegradation, photocatalysis, gas-particle partitioning, transportation, and deposition are influenced by meteorological conditions including temperature, relative humidity, wind, atmospheric pressure, and solar radiation (Bu et al., 2021;Tian et al., 2021;Yu et al., 2021;Salvador et al., 2022). Temperature would influence OPFR volatilization into the atmosphere and the partitioning of OPFRs into the gas phase. ...
- Citing Article
January 2021
Aerosol and Air Quality Research
... PCTA/DTs can transport and transform globally through the grasshopper hopping effect and are released into different media due to their resistance and stability to degradation by metabolic and chemical processes. In addition, they have been detected in a variety of environments, including atmosphere, soil/sediment, pulp mill effluents, petroleum spills, petroleum refineries, pine needles, and some aquatic organisms [1][2][3]7,[12][13][14][15], causing which could play a more important role in the isomer distribution of PCDF compounds than of PCDD [33]. Stieglitz et al. found that the addition of water may have more effective catalytic activity in the formation of PCDDs than of PCDFs [34]. ...
- Citing Article
January 2021
Aerosol and Air Quality Research
... It has demonstrated great promise in dealing with VOCs which are industrial contaminants, dyes, and recalcitrant organic compounds [89,90]. A good understanding of the reactive species is required to achieve better performance when contaminants are being treated using plasma technology [91]. This technology is now finding application in e-waste treatment and its classifications which are growing and are generated from electronic devices. ...
- Citing Article
January 2020
Aerosol and Air Quality Research
... They proved that control policies (reducing random contact between people) could delay and reduce the peak of the second wave of the COVID-19 pandemic. Kaijie et al. [18] studied the time variation of the air quality index in Western China and the impact of COVID-19 on air quality and showed that the implementation of strict air quality policies and emission control strategies could reduce the spread of COVID-19 and significantly improve the environment and human health. Wells et al. [19] suggested that international travel and border control measures could slow down the export speed from the Chinese Mainland to other countries, but were not sufficient to curb the global spread of COVID-19. ...
- Citing Article
January 2020
Aerosol and Air Quality Research
... Unlike the general trends of pollution reduction, ozone levels increased in the lockdown phase than pre-lockdown or similar times in the previous year in Kolkata and Howrah, which necessitates special attention for an explanation. The trend was in line with other studies for major urban areas in India and abroad [35,36]. The explanation lies in the basic ground-level ozone formation chemistry. ...
- Citing Article
January 2020
Aerosol and Air Quality Research