@article{ART003047185},
author={He Binbin and Zu Yun and Nie Yunxiang and Mei Yi},
title={Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid},
journal={Carbon Letters},
issn={1976-4251},
year={2023},
volume={33},
number={7},
pages={2313-2325},
doi={10.1007/s42823-023-00573-5}
TY - JOUR
AU - He Binbin
AU - Zu Yun
AU - Nie Yunxiang
AU - Mei Yi
TI - Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid
JO - Carbon Letters
PY - 2023
VL - 33
IS - 7
PB - Korean Carbon Society
SP - 2313
EP - 2325
SN - 1976-4251
AB - Fluorine (F) recovery from wet process phosphoric acid (WPA) is essential for sustainable resource utilization and environmental protection. This work systematically investigates the F recovery mechanism by air stripping from three simulated systems: H3PO4-H2SiF6-H2O, H3PO4-HF-H2O, H3PO4-H2SiF6-HF-Al3+-H2O, and from two industrial systems: WPA and WPA-Al3+ under different stripping temperatures (60–110 ℃) and stripping times (0–120 min). The influence on the existence form of F, the content of Al3+ cations and the addition of active silica on the F removal rate in the phosphoric acid solution is studied by analyzing the changes in the contents of F, P and Si. The results indicate that the F in the form of H2SiF6 is more easily released from the phosphoric acid solution than that in the form of HF. While, the release of F is inhibited in the presence of the Al3+ in the solution due to the formation of Al-F complexes that are characterized by 19F NMR, 31Si NMR and FTIR techniques. Interestingly, the addition of active silica can promote the conversion of HF to H2SiF6 in the solution and significantly improve the release rate of F. The researching results can provide an important guidance for industrial practice of WPA.
KW - Wet process phosphoric acid Fluorine recovery Air stripping Al3+ cation Fluorosilicic acid
DO - 10.1007/s42823-023-00573-5
ER -
He Binbin, Zu Yun, Nie Yunxiang and Mei Yi. (2023). Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid. Carbon Letters, 33(7), 2313-2325.
He Binbin, Zu Yun, Nie Yunxiang and Mei Yi. 2023, "Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid", Carbon Letters, vol.33, no.7 pp.2313-2325. Available from: doi:10.1007/s42823-023-00573-5
He Binbin, Zu Yun, Nie Yunxiang, Mei Yi "Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid" Carbon Letters 33.7 pp.2313-2325 (2023) : 2313.
He Binbin, Zu Yun, Nie Yunxiang, Mei Yi. Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid. 2023; 33(7), 2313-2325. Available from: doi:10.1007/s42823-023-00573-5
He Binbin, Zu Yun, Nie Yunxiang and Mei Yi. "Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid" Carbon Letters 33, no.7 (2023) : 2313-2325.doi: 10.1007/s42823-023-00573-5
He Binbin; Zu Yun; Nie Yunxiang; Mei Yi. Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid. Carbon Letters, 33(7), 2313-2325. doi: 10.1007/s42823-023-00573-5
He Binbin; Zu Yun; Nie Yunxiang; Mei Yi. Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid. Carbon Letters. 2023; 33(7) 2313-2325. doi: 10.1007/s42823-023-00573-5
He Binbin, Zu Yun, Nie Yunxiang, Mei Yi. Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid. 2023; 33(7), 2313-2325. Available from: doi:10.1007/s42823-023-00573-5
He Binbin, Zu Yun, Nie Yunxiang and Mei Yi. "Investigation on the fluorine recovery mechanism by air stripping for synthetic and industrial wet process phosphoric acid" Carbon Letters 33, no.7 (2023) : 2313-2325.doi: 10.1007/s42823-023-00573-5