MARC details
| 000 -LEADER |
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| fixed length control field |
02942nam a22003137a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250717145528.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250715b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPM |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
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| Classification number |
BTH RB 37 |
| Item number |
A68 2025 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Aquino, Errol B. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
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| Title |
Biosorption of cr(vi) from a queous solution using cao nanoparticles extracted from tahong (asian green mussels) waste shells/ |
| Statement of responsibility, etc. |
Errol B. Aquino, Dana Kay J. Dagohoy, Jan Richellow D. Daladio, and Aliya Mae B. Viray.-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2025. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
ix, 117pages: |
| Dimensions |
29cm. |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
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| General note |
Bachelor's thesis<br/> |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
College Of Science.--<br/> |
| Degree type |
Bachelor of applied science in laboratory technology: |
| Name of granting institution |
Technological University of the Philippines, <br/> |
| Year degree granted |
2025. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographic references and index. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
This study investigated the potential of biosorption to remove hexavalent chromium [Cr(VI)]<br/>from aqueous solutions using calcium oxide (CaO) nanoparticles synthesized from Tahong<br/>(Asian green mussel) waste shells. CaO nanoparticles were synthesized via two methods: Sol-gel<br/>and Hydrothermal. Characterization using Fourier-Transform Infrared Spectroscopy (FTIR)<br/>confirmed successful decomposition of calcium carbonate to CaO, indicated by the<br/>disappearance of carbonate peaks and the appearance of a strong Ca–O stretching peak at ~554<br/>cm−1. Scanning Electron Microscopy (SEM) revealed that Sol-gel CaO nanoparticles had an<br/>average particle size of approximately 99 nm with porous, aggregated structures ideal for<br/>adsorption. Energy-Dispersive X-ray Spectroscopy (EDX) showed that the synthesized<br/>nanoparticles contained 48.33% calcium and 44.67% oxygen by weight, with minor impurities of<br/>chlorine and sodium; post-adsorption analysis confirmed chromium uptake, with 1.09% Cr<br/>detected. The Sol-gel-derived CaO nanoparticles exhibited a finer morphology and higher<br/>adsorption efficiency, attributed to their increased surface area. Adsorption experiments<br/>examined the effects of various parameters, including adsorbent dosage, initial chromium<br/>concentration, pH, and temperature. Optimal removal efficiency (76.41%) was achieved at pH 5<br/>and 30°C using Sol-gel CaO nanoparticles. Kinetic data fitted best with the pseudo-second-order<br/>model, while equilibrium studies followed the Freundlich isotherm, indicating multilayer<br/>adsorption. This study highlights the efficacy of Tahong-derived CaO nanoparticles as a<br/>sustainable, low-cost biosorbent for heavy metal remediation. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Biosorption |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Calcium oxide nanoparticles |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Tahong shells |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Dagohoy, Dana Kay J. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Daladio, Jan Richellow D. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Viray, Aliya Mae B. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COS |
| Suppress in OPAC |
No |