Biosorption of hexavalent chromium Cr(VI) using milkfish (Chanos chanos) bones and scales as hydroxyapatite (HAp) on simulated chromium-induced water/ Christian Lloyd D. Manalansan, Sidney M. Medina, and Julia Luzelle G. Uy .--

By:

Manalansan, Christian Lloyd D [author ]

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Material type: Text

TextPublication details: Manila: Technological University of the Philippines, 2024.Description: ix, 144pages: 29cm. +1 CD-ROM (4 3/4in.)Content type:

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Subject(s):

Laboratory technology

LOC classification:

BTH RB 37 M36 2024

Dissertation note: College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024. Summary: Hydroxyapatite (HAp) synthesized from milkfish bones and scales was investigated for its potential to remove hexavalent chromium (Cr6+) from water. The HAp was synthesized through calcination at varying temperatures and characterized using FTIR, SEM, and EDS. Optimal calcination temperatures were 700°C for fish scales and 900°C for fish bones, yielding HAp with excellent crystallinity and significant carbonate and phosphate groups, ideal for biosorption. The study evaluated adsorption efficiency under varying adsorbent dosage, pH, and contact time conditions. Optimum removal efficiencies for Cr6+ were 34.99% for fish bone HAp and 33.54% for fish scale HAp, with yields of 48.78% and 60.83%, respectively. The adsorption process was exothermic, with decreased efficiency at higher temperatures. Optimal conditions for maximum Cr6+ removal were identified as 1.0g adsorbent dosage, pH 2, and contact times of 25 minutes for fish bone HAp and 60 minutes for fish scale HAp. This research demonstrates the potential of using waste materials from the fish processing industry for environmental remediation of heavy metal contamination. Further studies are recommended to optimize the biosorption process for broader applicability.

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Item type	Current library	Shelving location	Call number	Copy number	Status	Notes	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH RB 37 M36 2024 (Browse shelf(Opens below))	c.1.	Not for loan	For library use only		BTH0005005

Thesis (undergraduate)

College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024.

Includes bibliography

Hydroxyapatite (HAp) synthesized from milkfish bones and scales was investigated
for its potential to remove hexavalent chromium (Cr6+) from water. The HAp was synthesized
through calcination at varying temperatures and characterized using FTIR, SEM, and EDS.
Optimal calcination temperatures were 700°C for fish scales and 900°C for fish bones,
yielding HAp with excellent crystallinity and significant carbonate and phosphate groups,
ideal for biosorption. The study evaluated adsorption efficiency under varying adsorbent
dosage, pH, and contact time conditions. Optimum removal efficiencies for Cr6+ were 34.99%
for fish bone HAp and 33.54% for fish scale HAp, with yields of 48.78% and 60.83%,
respectively. The adsorption process was exothermic, with decreased efficiency at higher
temperatures. Optimal conditions for maximum Cr6+ removal were identified as 1.0g
adsorbent dosage, pH 2, and contact times of 25 minutes for fish bone HAp and 60 minutes
for fish scale HAp. This research demonstrates the potential of using waste materials from the
fish processing industry for environmental remediation of heavy metal contamination. Further
studies are recommended to optimize the biosorption process for broader applicability.

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