Influence of densification parameters on quality properties of rice straw pellets

Said, Noha; daiem, Mahmoud M. Abdel; García-Maraver, Ángela; Zamorano, M.

doi:10.1016/j.fuproc.2015.05.011

Cited by 84 publications

(53 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chlorine, the zinc and potassium elements originated from the activation agents (ZnCl 2 and KOH). However, the other elements (Si, S, Ca Cu, Al, Br) are naturally present on the rice straw, and are probably present in residual ashes, similar to the previously published results [31,47,48]. Since their preponderance is lower, we will consider that all ACs are structurally formed by only carbon and oxygen elements.…”

Section: Resultssupporting

confidence: 83%

“…A well-proven KAHL 14-175 flat die pelleting press with a nominal power of 3 kW was used to manufacture pellets, according to Said et al [31]. After the temperature of the produced pellets was reduced by the ambient air, the pellets were packaged in plastic bags and stored at ambient temperature far from heat and moisture for subsequent characterization and analysis in order to determine moisture content, hardness, durability, particle and bulk densities as described previously [31]. All of these analyses were run in triplicate for randomly chosen pellet samples in each experiment, and the average values of the measurements were taken.…”

Section: Preparing and Characterizing Pelletsmentioning

confidence: 99%

See 1 more Smart Citation

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

Self Cite

View full text Add to dashboard Cite

Activated carbons have been prepared from rice straw by considering the material forms of rice straw, the chemical activation agent and the preparation method. The study seeks optimal conditions for giving better mico-and nano-properties, and to support the corresponding molecular structure. All the obtained results are referred to those of a commercial sample. Fourier transform infrared absorption, X-ray photoelectron spectroscopy, and dispersive X-ray spectroscopy are combined to determine functional groups. Moreover, a quantum chemical calculation has been done using density functional theory to argue the proposed molecular structure. Principally, the vibrational properties are compared to experimental results, and the corresponding electronic structure is calculated. Thermal stability and eventual reactions are evidenced by both differential and gravimetric thermal analysis. The surface topography of the resulting activated carbon is checked by scanning electron microscope and correlated with their chemical and textual characteristics carried out from Brunauer, Emmett and Teller analysis. Results illustrate that the resulting product is a mixture of carbon graphic structure and acidic/basic entities and exhibit a global acidic pH. The use of KOH as oxidant agent and the ground raw material form leads to obtain good properties such as higher surface area and higher porosity. Based on the size compatibility making it possible to introduce low-radius single-walled carbon nanotubes, the electronic structures of the prepared activated carbon and that of chiral (5,5) SWCNTs and their corresponding *

show abstract

Section: Resultssupporting

confidence: 83%

Section: Preparing and Characterizing Pelletsmentioning

confidence: 99%

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In any case, the dimensions of both pellets were within the range established by the norm. A slight increase in the diameter indicated a pellet expansion after its release from the die, an effect also shown in other materials [25]. RH pellets had the lowest L/d ratio and both materials presented values similar to other biomass pellets (e.g.…”

Section: Physical Propertiessupporting

confidence: 68%

Production, Characterization, and Evaluation of Pellets from Rice Harvest Residues

et al. 2020

View full text Add to dashboard Cite

Pellets from residues from rice harvest (i.e., straw and husk) were produced and their main properties were evaluated. Firstly, rice straw pellets were produced at lab scale at varying operational conditions (i.e., load compression and wt % of feeding moisture content) to evaluate their suitability for palletization. Successively, rice straw and husk pellets were commercially produced. All the samples were characterized in terms of their main physical, chemical, and physico-chemical properties. In addition, axial/diametral compression and durability tests were performed to assess their mechanical performance. All the analyzed properties were compared with the established quality standards for non-woody pellets. In general, rice straw pellets presented suitable properties for their use as pelletized fuels. Rice husk pellets fell out of the standards in recommended size or durability and thus preliminary treatments might be required prior their use as fuels.

show abstract

“…Finally, the energy content was evaluated obtaining a LHVRS = 10 MJ/kg, a much lower value with respect to the densified sample (LHVpellets = 15 MJ/kg [35]), confirming the suitability of the pre-treatment of RS from an energetic point of view as well. [36] 239 56 0.76 600 In short, TG curves first displayed a degradation profile corresponding to the removal of moisture followed by the release of volatiles. Ashes could be calculated as the difference between the residues in both atmospheres (%ashes ≈ 20%) in accordance to previous analysis [21].…”

Section: Characterization and Pre-treatment Of Rice Strawmentioning

confidence: 99%

Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project

et al. 2018

View full text Add to dashboard Cite

An improved and more sustainable waste management system is required for successful development of technologies based on renewable sources. Rice straw is submitted to controlled combustion reactions and the produced ashes are chemically treated to produce silica. After a chemical activation step, the activated silica shows potential as an adsorbent agent and will be used to remove the excess of nitrates in groundwater and wells in the area of Alginet (Valencia, Spain), selected as a vulnerable zone within the Nitrates Directive. The demonstration activity aims to have a local impact on municipalities of 200 inhabitants or fewer, decreasing from current nitrate concentrations close to 50 mg/L, to a target of 25 mg/L. In a successive step, the methodology will be transferred to other municipalities with similar nitrate problems (Piemonte, Italy) and replicated to remove different pollutants such as manure (the Netherlands) and waste waters from the textile industry (Italy).Keywords: rice straw; waste management; energy and material recovery; water treatment; nitrate removal Framework of LIFE LIBERNITRATE ProjectClean water is becoming a valuable commodity. In the last one hundred years, water consumption per capita has increased twice as fast as the population, with this trend expected to increase in the coming decades [1]. This can be attributed to increased water consumption and waste, irregular water distribution worldwide, climate change and the growing number of anthropogenic activities [2].

show abstract

Influence of densification parameters on quality properties of rice straw pellets

Cited by 84 publications

References 53 publications

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Production, Characterization, and Evaluation of Pellets from Rice Harvest Residues

Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project

Contact Info

Product

Resources

About