Effect of crystallization of settled aluminum hydroxide precipitate on “dissolved Al”

2018 ◽  
Vol 143 ◽  
pp. 346-354 ◽  
Author(s):  
Wenzheng Yu ◽  
Lei Xu ◽  
Kaiyu Lei ◽  
John Gregory
1980 ◽  
Vol 16 (10) ◽  
pp. 628-632
Author(s):  
Ya. R. Katsobashvili ◽  
N. S. Kurkova ◽  
I. P. Basmanov ◽  
T. A. Ryzhenkova ◽  
B. I. Matveev ◽  
...  

2020 ◽  
Author(s):  
Tuzhilin Aleksey Sergeevich ◽  
Balmaev Boris Grigorievich ◽  
Vetchinkina Tatiana Nikolaevna

A comparative techno-economic estimate of the cost of HOAC producing from technical aluminum hydroxide and hydroxide sludge showed that the cost of HOAC would be decreased by 11% by using a hydroxide precipitate. The cost of operation on the hydroxide precipitate will decrease by 17.3% provided the storage vessel is converted into a reactor to neutralize the acid solution of HOAC. This is possible due to doubling the production of HOAC, moreover production volumes will amount to 7178.2 thousand rubles. The calculated payback period for capital investments for retrofitting is 1 month. Keywords: coagulant, aluminum hydroxychloride, hydroxide precipitate, aluminum- containing waste


2021 ◽  
Vol 22 (2) ◽  
pp. 354-365
Author(s):  
Lianghui Ai ◽  
Shanshan Chen ◽  
Liu Yang ◽  
Ping Liu

2010 ◽  
Vol 29 (9) ◽  
pp. 563-568 ◽  
Author(s):  
Haiyan Chang ◽  
Xiaoman Li ◽  
Yong Teng ◽  
Yan Liang ◽  
Bo Peng ◽  
...  

2012 ◽  
Vol 490-495 ◽  
pp. 3211-3214 ◽  
Author(s):  
Lei Shan Chen ◽  
Cun Jing Wang

Synthesis reactions were carried out by chemical vapor deposition using iron catalyst supported on aluminum hydroxide at 400 °C and 420 °C, in the presence of argon as carrier gas and acetylene as carbon source. The aluminum hydroxide support was separated by refluxing the samples in 40% NaOH solution for 2 h and 36% HCl solution for 24 h, respectively. The samples were characterized by field-emission scanning electron microscopy, energy dispersive spectroscopy, high-resolution transmission electron microscopy and X-ray diffraction. The results show that carbon nanotubes were the main products at 420 °C, while large scale high purity nano onion-like fullerenes encapsulating Fe3C, with almost uniform sizes ranging from 10-50 nm, were obtained at the low temperature of 400 °C.


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