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All Journal Acta Chimica Asiana International Journal of English Language and Pedagogy
Ocampo, Darrel
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Chemistry Education Social Sciences

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Determining the preeminent plastic wastes in the production of petrol using pyrolysis method and its effectiveness as an alternative fuel Herrero, Nelson Jun; Azañon, Rosenda; Alvaro, Abbie Jane; Ocampo, Darrel
Acta Chimica Asiana Vol. 7 No. 1 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i1.189

Abstract

Abstract: This study aimed to determine which type of plastic – PET, HDPE, LDPE, PP, PS, and Others, produces most oil yield in terms of time of complete degradation, temperature and amount of plastics using a non-catalytic slow pyrolysis method; it also determined the physical characteristics of the oil yield in terms of its color and appearance; and it also aimed to determine which petroleum produced by different types of plastics are more efficient in terms of (a) production of oil and (b) combustion time. Production of oil and oil yield is presented in milliliters and percentage, respectively. Combustion time is expressed in seconds from the time of ignition to total disappearance of flame having 1ml of oil tested from each produced pyrolytic oil. Experimental-descriptive comparative method was used in determining the type of plastic that yields to most of pyrolytic oil. Based from gathered results, at constant temperature and amount of plastics, PS produced most petroleum at 29.5% oil yield followed by PP with 29%. While PET produced the least petroleum with 0.01% oil yield. Color varies at different types of plastics, given that PET and PP produces light brown color, LDPE produces light yellow while HDPE, PS and Others produces black color. PET, HDPE, PP, PS and Others produced liquefied petroleum while LDPE produces flammable wax product. PS produced most petroleum with 295ml (29.5%), and PET produced least oil with 1ml (0.01%). Combustion time varies at different types of plastics: PS at 145 seconds, PP at 141 seconds, HDPE at 115 seconds, Others at 78 seconds, LDPE at 77 seconds while PET produced non – flammable oil yield. Thus, PS is most efficient as an alternative fuel in terms of production and combustion time. For the betterment of similar study, future researchers are encouraged to test the pyrolytic oil yielded from different types of plastics in engine performance and machineries and the comparative performance to the available commercial fuels.
Utilization of Pili (Canarium ovatum) sawdust in bio-crude oil production and the identification of potential by-products through thermochemical conversion Prado, Jerico; Mendez, Jean Claude; Brillante, Florelyn; Ocampo, Darrel
Acta Chimica Asiana Vol. 7 No. 2 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i2.188

Abstract

This study aimed to utilize Pili sawdust in the production of bio-crude oil and identify its potential by-products through thermochemical conversion. To obtain all the essential data, this research sought to answer the questions: (1) How much bio-crude oil can be produced at constant factors such as temperature and amount of Pili (Canarium ovatum) sawdust? (2) What are the physical characteristics of the generated bio-crude oil after conducting thermochemical conversion? (a) Color, (b) Appearance, and (c) Viscosity (3) What other potential by-product can be generated out of Pili (Canarium ovatum) sawdust after conducting thermochemical conversion. (4) What are the physical characteristics of the generated by-products after conducting thermochemical conversion? (a) Color and (b) Appearance. Experimental-descriptive method was used in perceiving the physical properties of the by-products and its bio-crude oil production, presented in milliliters (mL) and to be expressed in percentage respectively.  Based on the gathered observation record results, data revealed that 1000 g of Pili sawdust in 340 oC temperature, yields 30% or 300mL of brownish bio-crude oil in color, with a high degree of viscosity. Consequently, the generated by-products are biochar and synthesized biogas. The 242.2g of biochar which yields 24.52%, resulted being porous and coarse-grained in texture. While the synthesized biogas generated 433.4g of net weight yields 43.34%, resulted in having a high flammability. For the betterment of similar study, future researchers are encouraged to evaluate the agricultural potential of the generated biochar and to distillate bio-crude oil for possible commercial use.
Teachers’ Reading Strategies in Developing Elementary ESL Learners’ Oral Reading Fluency (ORF) Ocampo, Darrel; Abergos, Julie Ann; Garfin, Jane; Cardinal, Willy
International Journal of English Language and Pedagogy Vol. 3 No. 1 (2025): International Journal of English Language and Pedagogy (IJELP)
Publisher : Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/ijelp.v3i1.10567

Abstract

This study aimed to determine the reading strategies utilized by the teachers in developing oral reading fluency of learners in the First District of Camarines Sur, Bicol, Philippines. Descriptive method was used to describe demographic profile of the respondents, the extent of teaching reading strategies, and the perceived effect of the teaching strategies utilized by the teachers in developing oral reading fluency. The correlational method was utilized to ascertain the relationship between the demographic profile and the extent of teaching reading strategies. 93 English Elementary teachers served as the respondents. Results disclosed that solitary reading, buddy reading, and group reading have a Very Large Extent in developing oral reading fluency. Accuracy, automaticity, and prosody proved to be highly effective in developing oral reading fluency among learners. Moreover, the extent of utilizing solitary reading, buddy reading, and group reading is not significantly correlated in terms of academic rank, years of teaching, and highest educational attainment of the teachers. The lack of significant correlation implies that the implementation of solitary, buddy, and group reading practices is likely more influenced by contextual and pedagogical considerations than by the demographic or educational attributes of the teachers. To further investigate, longitudinal studies or qualitative research might provide deeper insights into how teachers select and implement reading practices in response to evolving educational needs and environments. It may also be beneficial to explore how these reading practices affect student outcomes, as this could offer critical feedback for instructional improvement.
Effectiveness of Mnemonic Method on Students’ Language Information Retention Ocampo, Darrel; Belleca, Faith Chi Dy; Caampued, Kristine; Caballas, Ryan; Guiruela, Justine Marie
International Journal of English Language and Pedagogy Vol. 3 No. 2 (2025): International Journal of English Language and Pedagogy (IJELP)
Publisher : Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/ijelp.v3i2.12141

Abstract

This study aimed to investigate how mnemonic methods, specifically acronyms and acrostic, impact language information retention among second year BSED-ENGLISH students at a state university in Camarines Sur. The research questions focused on the effects of acronyms and acrostics on retention, the effectiveness of mnemonics in improving retention, and differences in post-test results between comparison and experimental groups while considering pre-test scores. The participants are the 37 respondents from BSED-English 2A and 33 respondents from BSED-English 2B taking the Technical Writing course. A quasi-experimental design used test questionnaires as the primary tool. Statistical methods like frequency count, percentage, mean, and ANCOVA analyzed the data, revealing significant benefits of mnemonic strategies for short and long-term retention. The findings emphasized the importance of mnemonics in enhancing language retention. Educators are urged to integrate mnemonic techniques for improved retention. Future research could explore the long-term impact of mnemonics across subjects and student groups.
Co-Authors Abergos, Julie Ann Alvaro, Abbie Jane Azañon, Rosenda Belleca, Faith Chi Dy Brillante, Florelyn Caampued, Kristine Caballas, Ryan Cardinal, Willy Garfin, Jane Guiruela, Justine Marie Herrero, Nelson Jun Mendez, Jean Claude Prado, Jerico