Phosphate removal by column packed blast furnace slag ‐ I. Fundamental research by synthetic wastewater

1987 ◽  
Vol 8 (1-12) ◽  
pp. 589-598 ◽  
Author(s):  
Hiroshi Sunahara ◽  
Wei Min Xie ◽  
Mitsu Kayama
2017 ◽  
Vol 43 (1) ◽  
Author(s):  
BRUNO KOSTURA ◽  
RICHARD DVORSKY ◽  
JANA KUKUTSCHOVÁ ◽  
SONA ŠTUDENTOVÁ ◽  
JIRI BEDNÁŘ ◽  
...  

2012 ◽  
Vol 65 (6) ◽  
pp. 1048-1053 ◽  
Author(s):  
Liping Qiu ◽  
Guangwei Wang ◽  
Shoubin Zhang ◽  
Zhongxi Yang ◽  
Yanbo Li

The phosphate removal abilities and crystallization performance of quartz sand, ceramsite, blast furnace slag and steel slag were investigated. The residual phosphate concentrations in the reaction solutions were not changed by addition of the ceramsite, quartz sand and blast furnace slag. The steel slag could provide alkalinity and Ca2+ to the reaction solution due to its hydration activity, and performed a better phosphate removal performance than the other three. Under the conditions of Ca/P 2.0, pH 8.5 and 10 mg P/L, the phosphate crystallization occurred during 12 h. The quartz sand and ceramsite did not improve the phosphate crystallization, but steel slag was an effective seed crystal. The phosphate concentration decreased drastically after 12 h after addition of steel slag, and near complete removal was achieved after 48 h. The XRD analysis showed that the main crystallization products were hydroxyapatite (HAP) and the crystallinity increased with the reaction time. Phosphate was successfully recovered from low phosphate concentration wastewater using steel slag as seed material.


CONCREEP 10 ◽  
2015 ◽  
Author(s):  
Tomiyuki Kaneko ◽  
Keiichi Imamoto ◽  
Chizuru Kiyohara ◽  
Akio Tanaka ◽  
Ayuko Ishikawa

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