Hydroxyapatite Biosynthesis by a Serratia sp. and Application of Nanoscale Bio-HA in the Recovery of Strontium and Europium
Hydroxyapatite Biosynthesis by a Serratia sp. and Application of Nanoscale Bio-HA in the Recovery of Strontium and Europium
复制标题
沙雷氏菌属的羟基磷灰石生物合成。
DOI:
10.1080/01490451.2015.1067657
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发表时间:
2015
影响因子:
2.3
通讯作者:
Gangappa R
中科院分区:
文献类型:
--
作者:
Gangappa R
ASerratiasp. expresses a high level of acid phosphatase when grown continuously under carbon limitation. In the presence of CaCl2, biosynthesis of nanocrystalline hydroxyapatite (bio-HA) was achieved by utilizing phosphate released via enzymatic cleavage of an applied substrate (glycerol 2-phosphate: G2P). Hydroxyapatite crystals were identified by energy dispersive X-ray emission (EDX) and selected area diffraction (SAD). X-ray powder diffraction (XRD) analysis gave a mean crystallite size of ∼21–32 nm, with the smallest crystals (21–24 nm) obtained using 1 mM Ca2+and 1 mM G2P. The uptake of Eu3+and Sr2+by bio-HA made by continuously pregrown cells (0.42 mg/mg and 0.043 mg/mg respectively) was ∼20% greater for Sr2+than was previously reported for bio-HA material of size ∼40 nm made by batch-pregrown cells, while the corresponding uptake of Eu3+was increased by > 1.8-fold. This was attributed to the localization of Eu (III) at grain boundaries by reference to previous work and highlights the potential of bio-HA as a sequestration agent for recovery of rare earth elements and trivalent actinides.
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DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
D. Beruto;M. Giordani
通讯作者:
M. Giordani
影响因子:
4.7
作者:
Paterson-Beedle M
通讯作者:
Paterson-Beedle M
影响因子:
2.7
作者:
P. Yong;W. Liu;Zhibing Zhang;D. Beauregard;Michael L. Johns;L. Macaskie
通讯作者:
L. Macaskie
DOI:
10.1023/a:1008934024440
发表时间:
2000-06-01
影响因子:
3.7
作者:
Durucan, C;Brown, PW
通讯作者:
Brown, PW
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
T. Kameyama
通讯作者:
T. Kameyama