CSU-Carig
Comparative analysis of sodium hydroxide, oxalic acid and two-stage (oxalic acid-sodium hydroxide) pretreatment of napier grass (pennisetnum purpureum) for bioethanol production [manuscript] / Krissha Nicole A. Carabbacan, Paul Martin T. Dayag, Jamie T. Delos Santos, Jan Patrick A. Guzman, Stephen Jave G. Yangat. (Record no. 20073)
| 000 -LEADER | |
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| fixed length control field | 02360nam a22001817a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | C'ENG 0045 |
| Item number | 2024 c.1 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Carabbacan, Krissha Nicole A., author. |
| 245 ## - TITLE STATEMENT | |
| Title | Comparative analysis of sodium hydroxide, oxalic acid and two-stage (oxalic acid-sodium hydroxide) pretreatment of napier grass (pennisetnum purpureum) for bioethanol production [manuscript] / Krissha Nicole A. Carabbacan, Paul Martin T. Dayag, Jamie T. Delos Santos, Jan Patrick A. Guzman, Stephen Jave G. Yangat. |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Year of publication | ©2024. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | x, 60 pages ; |
| Other physical details | 28 cm. |
| 500 ## - GENERAL NOTE | |
| General note | Thesis (B.S.) -- Cagayan State University, 2024. Includes bibliographical references. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | This paper seeks to compare the effects of sodium hydroxide, oxalic acid, and two- stage (acid-alkali) pretreatment on the brix degree and percent ethanol yield from Napier grass. The substrate underwent simultaneous saccharification and fermentation process using 10 grams of the substrate, 2 grams of cellulase, 100 mL of buffer solution, 100 mL of nutrient solution, and 10 mL of yeast solution. Both pretreated and untreated samples were analyzed for Brix degree and ethanol content at 24, 48, and 72-hour intervals. In control samples, the brix degree was reduced from 5. 2 to 2.5 over 72 hours, with ethanol content ranging from 0.07% to 0. 33%. The one stage NaOH pretreatment enhanced the ethanol yield to the highest of 1. 19% with 1.0 M NaOH, and significantly decreasing the Brix degree. Ethanol yield was also enhanced by oxalic acid pretreatment but to a lesser degree compared to NaOH with the maximum yield of 0. 38% at 2% w/v oxalic acid. In the two-stage pretreatment (oxalic acid followed by NaOH pretreatment), the highest ethanol yield was 0.07% for the combination of 2. 0% OxA and 0. 8 M NaOH. Although the Brix degree reduction was almost the same for both two-stage and one-stage NaOH pretreatment, the ethanol yield from the former process was lower in general. This implies that single-stage NaOH pretreatment is the best method to increase ethanol yield of the Napier grass. Keywords: two-stage pretreatment, brix degree, percent ethanol yield, simultaneous saccharification and fermentation. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dayag, Paul Martin T. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Delos Santos, Jamie T. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Guzman, Jan Patrick A. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yangat, Stephen Jave G. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Academic Research |
| Source of acquisition | Permanent Location | Date acquired | Koha item type | Collection code | Accession Number | Lost status | Shelving location | Withdrawn status | Current Location | Full call number |
|---|---|---|---|---|---|---|---|---|---|---|
| School | Cagayan State University - Carig Library | 2024-11-13 | Academic Research | Academic Research | CHEMICAL0045 | Academic Research Section | Cagayan State University - Carig Library | C'ENG 0045 2024 c.1 |