Nonisothermal Thermogravimetric Analysis of Thai Lignite with High CaO Content

Pintana, Pakamon; Tippayawong, Nakorn

doi:10.1155/2013/216975

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…Comparing the C and H contents of the following: torre ed EFB, 58.89 wt.% and 5.12 wt.% [11]; coal, 64.34 wt% and 4.06 wt.% [57]; lignite, 58.5 wt.% and 3.0 wt.% [58] and pelletized EFB, 42.86 -43.98 wt.% and 6.38 -6.63 wt.% (this study), it is thus apparent that though the EFB pellets has a much lower CV amongst the solid fuels, its CV has been greatly improved compared to the raw material used. The results indicated that simple physical removal of moisture coupled with different sieving and washing co-treatment methods were su cient to improve the CV of EFB pellets which then could perform much better as a fuel compared to normal EFB pellets.…”

Section: Production Trials and Physical Characteristics Of Raw Materimentioning

confidence: 99%

Production and Characterization of Low-ash Empty Fruit Bunches (EFB) Pellets as a Solid Biofuel

Nasrin

Loh

Sukiran

et al. 2021

Preprint

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Fuel quality is among the major issues encountered for commercial production and utilisation of oil palm-based biomass pellets from empty fruit bunches (EFB). In this study, a physical treatment, namely sieving and water washing, was applied to EFB prior to densification using an industrial-scale plant. The physiochemical properties of the produced EFB pellets were compared with those without physical treatment as the control. The results showed that the physical treatment process had significantly enhanced the fuel properties of EFB pellets, particularly in reducing ash content. Both the treatments; sieving alone and a combined sieving and water washing of the feedstock managed to reduce the ash content of EFB pellets to < 4 wt.% and < 2 wt.%, respectively compared to > 5 wt.% of typical commercial EFB pellets. The reduction in ash content improved the calorific value of pellets to > 17.5 MJ kg-1 which signified achieving a milestone for oil palm biomass-based heat and power generation from technical, operational, economic and environmental points of view. The findings also indicated that the combined sieving and water washing treatment method could potentially reduce further the unwanted ash-inducing elementals in EFB pellets, in particular chlorine and potassium. This study demonstrated that the employed physical treatment is an immediate and cost-effective practical commercial approach to improve the fuel properties of EFB pellets.

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Section: Production Trials and Physical Characteristics Of Raw Materimentioning

confidence: 99%

Production and Characterization of Low-ash Empty Fruit Bunches (EFB) Pellets as a Solid Biofuel

Nasrin

Loh

Sukiran

et al. 2021

Preprint

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“…The BET surface area of the green TiO 2 NPs was found to be 31.77 m 2 /g, which corresponds to correlation coefficient (r) of 0.99, as a liner graph (Ahmad et al, 2017). Thermogravimetric analysis is a method used to determine thermal stability and the fractions of volatile components by monitoring the weight changes at a constant heating rate (Pintana and Tippayawong, 2013). The differential scanning calorimetry deals with the heat flow-temperature and this analysis has been carried out in the temperature range of 20-800 • C using the uncalcined sample, as shown in Figure 11.…”

Section: Physicochemical Properties Green Tio 2 Npsmentioning

confidence: 99%

Influence of Solvents' Polarity on the Physicochemical Properties and Photocatalytic Activity of Titania Synthesized Using Deinbollia pinnata Leaves

2020

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Nanotechnology is one of the most interesting areas of research due to its flexibility to improve or form new products from nanoparticles (NPs), and as a fast, greener, more eco-friendly and sustainable solution to technological and environmental challenges. Among metal oxides of photocatalytic performance, the use of titania (TiO2) as photocatalyst is most popular due to its unique optical and electronic properties. Despite the wide utilization, the synthesis of TiO2 NPs bears many disadvantages: it utilizes various less environmental-friendly chemicals, high cost, requires high pressure and energy, and potentially hazardous physical and chemical methods. Hence, the development of green synthesis approach with eco-friendly natural products can be used to overcome these adverse effects. In this work, TiO2 NPs have been prepared by using Deinbollia pinnata leaves extracts, obtained by different solvents (n-hexane, ethyl acetate, and ethanol) with different polarities. The extracts acted as the reducing agent, while titanium isopropoxide as the precursor and water as the solvent. X-ray diffraction (XRD) pattern confirmed the synthesized TiO2 consist of anatase phase in high purity, with average crystallite size in the range of 19–21 nm. Characterization by using field emission scanning electron microscopy (FESEM) showed the TiO2 NPs possess a uniform semi-spherical shape in the size range of 33–48 nm. The energy dispersive X-ray (EDX) spectra of green TiO2 NPs showed two peaks for the main elements of Ti (61 Wt.%) and O (35 Wt.%). The band-gap energy of 3.2 eV was determined using UV-Vis spectroscopy. From the nitrogen sorption analysis, type V isotherm of the material was obtained, with BET surface area of 31.77 m2/g. The photocatalytic activity of synthesized TiO2 was evaluated for photodegradation of methyl orange (MO) under UV light irradiation. Based on the results, it is shown that TiO2 NPs synthesized with D. pinnata leaves extracted using ethyl acetate showed the most effective photodegradation performance, achieving 98.7% of MO conversion within 150 min. It can be concluded that the use of plant extracts in synthesis with TiO2 managed to produce highly crystalline anatase TiO2 with superior photocatalytic activity in the photodegradation of organic dye.

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Production and Characterization of Low-Ash Empty Fruit Bunches Pellets as a Solid Biofuel

et al. 2021

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Nonisothermal Thermogravimetric Analysis of Thai Lignite with High CaO Content

Cited by 11 publications

References 29 publications

Production and Characterization of Low-ash Empty Fruit Bunches (EFB) Pellets as a Solid Biofuel

Production and Characterization of Low-ash Empty Fruit Bunches (EFB) Pellets as a Solid Biofuel

Influence of Solvents' Polarity on the Physicochemical Properties and Photocatalytic Activity of Titania Synthesized Using Deinbollia pinnata Leaves

Production and Characterization of Low-Ash Empty Fruit Bunches Pellets as a Solid Biofuel

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