Title:
PREPARATION AND APPLICATION METHOD FOR ION BLOCKING AND CONTROLLING ADSORBENT
Document Type and Number:
WIPO Patent Application WO/2017/162013
Kind Code:
A1
Abstract:
Provided are preparation and application methods for an ion blocking and controlling adsorbent. A selective oxidation is performed by adjusting pH, to achieve the purpose of only oxidizing divalent iron into trivalent iron, and the iron is separated after a hydrothermal reaction is performed. A biomass is used as a raw material for preparing a highly selective adsorbent having a regular multilevel structure in the interior, which adsorbent can be used for deep purification of impurities such as iron, aluminum and vanadium in a chromium solution. A chromium oxide crystal can be obtained by deeply purifying a chromium solution, then adjusting pH, adding an appropriate hydrated agent, performing a hydrothermal precipitation treatment of chromium, filtrating, washing with an acidic lotion, and calcinating.
Inventors:
MA WEI (CN)
DUAN SHIBO (CN)
YU SHUANGEN (CN)
MENG FANQING (CN)
WANG REN (CN)
XU JUN (CN)
GUO LIYAN (CN)
WU LEI (CN)
LIU ZHUO (CN)
TAN DDZHI (CN)
DUAN SHIBO (CN)
YU SHUANGEN (CN)
MENG FANQING (CN)
WANG REN (CN)
XU JUN (CN)
GUO LIYAN (CN)
WU LEI (CN)
LIU ZHUO (CN)
TAN DDZHI (CN)
Application Number:
PCT/CN2017/075455
Publication Date:
September 28, 2017
Filing Date:
March 02, 2017
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
C22B34/32; B01J20/24; B01J20/28; B01J20/30; C22B3/24
Foreign References:
| CN104785212A | 2015-07-22 | |||
| CN103566887A | 2014-02-12 | |||
| CN104587954A | 2015-05-06 | |||
| CN103395912A | 2013-11-20 | |||
| JP2012170856A | 2012-09-10 | |||
| JP2010188230A | 2010-09-02 |
Other References:
HU YING ET AL.: "A Review on Adsorbents from Plants Waste of Chromium Removal from sewage and wastewater", SAFETY AND ENVIRONMENTAL ENGINEERING, vol. 23, no. 1, 31 January 2016 (2016-01-31)
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