Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/11952
ชื่อเรื่อง: Ultrasonic-assisted recycling of Nile tilapia fish scale biowaste into low-cost nano-hydroxyapatite: Ultrasonic-assisted adsorption for Hg2+ removal from aqueous solution followed by “turn-off” fluorescent sensor based on Hg2+-graphene quantum dots
ผู้แต่ง: Sricharoen P.
Limchoowong N.
Nuengmatcha P.
Chanthai S.
Keywords: Alkalinity
Atomic emission spectroscopy
Calcium
Costs
Energy dispersive spectroscopy
Extraction
Fish
Fourier transform infrared spectroscopy
High resolution transmission electron microscopy
Hydroxyapatite
Inductively coupled plasma
Nanocomposites
Nanosensors
Phosphorus
Recycling
Scanning electron microscopy
Semiconductor quantum dots
Adsorption capacities
Adsorption temperature
Brunauer emmett tellers
Extraction temperatures
Homogenous precipitation
Inductively coupled plasma atomic emission spectrometry
Significant variables
Ultrasonic-assisted extractions
Adsorption
adsorbent
calcium
graphene
hydroxyapatite
mercury
nanoparticle
phosphorus
quantum dot
graphite
hydroxyapatite
mercury
nanoparticle
adsorption
adsorption kinetics
aqueous solution
Article
energy dispersive X ray spectroscopy
extraction temperature
extraction time
Fourier transform infrared spectroscopy
inductively coupled plasma atomic emission spectrometry
kinetic parameters
nonhuman
Oreochromis niloticus
pH
priority journal
recycling
scanning electron microscopy
transmission electron microscopy
ultrasound assisted extraction
X ray diffraction
adsorption
animal
chemistry
isolation and purification
kinetics
metabolism
Tilapia
ultrasound
water pollutant
Adsorption
Animals
Durapatite
Graphite
Hydrogen-Ion Concentration
Kinetics
Mercury
Nanoparticles
Quantum Dots
Sonication
Tilapia
Water Pollutants, Chemical
วันที่เผยแพร่: 2020
บทคัดย่อ: This study was planned to recycle calcium and the phosphorus-rich Nile tilapia fish scale biowaste into nano-hydroxyapatite (FHAP), using ultrasonic-assisted extraction of calcium and phosphorus from fish scales, which was optimized in term of extraction time, acid concentration, extraction temperature, and ultrasonic power. These two elements were determined simultaneously by inductively coupled plasma atomic emission spectrometry and the FHAP phase was formed upon addition of the extracted element solution in alkaline medium using homogenous precipitation assisted with ultrasound energy. The FHAP adsorbent was characterized by x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and Brunauer-Emmett-Teller. A combination of FHAP and the ultrasonic method was then used to remove Hg2+ from aqueous solution. Four significant variables affecting Hg2+ removal, namely, adsorbent dosage, pH, ultrasonic power, and adsorption time, were studied. The results exhibited that the optimal conditions for maximizing the removal of Hg2+ were 0.02 g adsorbent dosage, pH 8, 0.4 kW ultrasonic power, 20 min adsorption time, and 30 °C adsorption temperature. The sorption mechanism of Hg2+ was revealed by isotherm modeling, indicating that FHAP adsorbent has a potential for Hg2+ removal in aqueous media with the maximum adsorption capacity being 227.27 mg g−1. This adsorption behavior is in agreement with the Langmuir model as reflected by a satisfactory R2 value of 0.9967, when the kinetics data were fitted with pseudo-second-order. Therefore, the FHAP could be an alternative adsorbent for the ultrasonic-assisted removal of Hg2+ at very high efficiency and within a very short period of time. © 2020 Elsevier B.V.
URI: https://ir.swu.ac.th/jspui/handle/123456789/11952
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077944901&doi=10.1016%2fj.ultsonch.2020.104966&partnerID=40&md5=481dfd19450900988676136b367d0b06
ISSN: 13504177
Appears in Collections:Scopus 1983-2021

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