Fluorine removal and calcium fluoride recovery from rare-earth smelting wastewater using fluidized bed crystallization process

2019 ◽  
Vol 373 ◽  
pp. 313-320 ◽  
Author(s):  
Guisheng Zeng ◽  
Bo Ling ◽  
Zhongjun Li ◽  
Shenglian Luo ◽  
Xinzhen Sui ◽  
...  
Keyword(s):  
Rare Earth ◽  
Fluidized Bed ◽  
Calcium Fluoride ◽  
Crystallization Process ◽  
Smelting Wastewater

Electrical relaxation of dimers in rare earth-doped calcium fluoride

1993 ◽  
Vol 54 (5) ◽  
pp. 513-516 ◽  
Author(s):  
P.C. McGowan ◽  
J.J. Fontanella ◽  
M.C. Wintersgill ◽  
J.F. Lomax ◽  
L.M. Hayden
Keyword(s):  
Rare Earth ◽  
Calcium Fluoride ◽  
Electrical Relaxation ◽  
Rare Earth Doped

Radiation induced electrical relaxation in rare earth doped calcium fluoride

1984 ◽  
Vol 1 (2-3) ◽  
pp. 431-435 ◽  
Author(s):  
J.J. Fontanella ◽  
M.C. Wintersgill ◽  
G.C. Kolodziejczak ◽  
D.R. Figueroa ◽  
C.G. Andeen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Calcium Fluoride ◽  
Electrical Relaxation ◽  
Radiation Induced ◽  
Rare Earth Doped

Removal and recovery of lead in a fluidized-bed reactor by crystallization process

2015 ◽  
Vol 155 ◽  
pp. 6-12 ◽  
Author(s):  
Mark Daniel G. de Luna ◽  
Luzvisminda M. Bellotindos ◽  
Riño N. Asiao ◽  
Ming-Chun Lu
Keyword(s):  
Fluidized Bed ◽  
Crystallization Process ◽  
Fluidized Bed Reactor ◽  
Removal And Recovery

scholarly journals Distribution of Trace Rare Earth Element Ions in the Crystallization Process of Alums

1978 ◽  
Vol 51 (5) ◽  
pp. 1557-1558
Author(s):  
Hitoshi Kanno ◽  
Hiroshi Wakita ◽  
Hiroshi Hamaguchi
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Crystallization Process

The Efficiency of Phosphorus Removal of Synthetic Wastewater through Struvite Crystallization in an Aerated Fluidized Bed Reactor

2018 ◽  
Vol 789 ◽  
pp. 59-63
Author(s):  
Susmardi Masti Casoni ◽  
Chandra Wahyu Purnomo ◽  
Muslikhin Hidayat
Keyword(s):  
Fluidized Bed ◽  
Flow Rate ◽  
Phosphorus Removal ◽  
Crystallization Process ◽  
Fluidized Bed Reactor ◽  
Aeration Rate ◽  
Synthetic Wastewater ◽  
Influent Flow ◽  
Mgcl2 Solution ◽  
P Removal

The high organic material contained in wastewater released into the environment asresults of various sources of human activities, such as phosphorus, can cause eutrophication. Thestruvite crystallization in an aerated fluidized bed reactor is one of the methods which able toimprove the efficiency of phosphorus removal. In this study, a mixture of synthetic wastewaters andthe MgCl2 solution was treated in a fluidized bed reactor equipped with aeration to produce thestruvite which can be utilized as a slow release fertilizer. Subsequently, the effect of aeration atdifference influent flow rate was investigated to correlate with the changing of phosphorusconcentration in the reactor effluent. The experiments were conducted for 240 minutes with thevariation of aeration are 0.5 L/min to 1.5 L/min; variation of influent flow rate of syntheticwastewater is 150 ml/min to 350 ml/min, with a constant influent flow rate of MgCl2 solution is 50ml/min. These solutions were maintained at the condition of pH 9. The results showed that theoptimal efficiency of phosphor removal which accounted for 82.5% occurred when the aeration rateof 1.5 L/min in the influent flow rate of 150 ml/min. From these findings, it is revealed that theefficiency of P removal in wastewater is obtained by a crystallization process which utilizing anaerated fluidized bed reactor and by increasing the aeration rate and the reactants contact time.

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