A novel Fe recycling method from pickling wastewater producing a KFeS2 whisker for electroplating wastewater treatment

2021 ◽  
Author(s):  
Dongxu Liang ◽  
Manhong Ji ◽  
Suiyi Zhu ◽  
Yu Chen ◽  
Zhihua Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Hydrothermal Method ◽  
Facile Hydrothermal Method ◽  
Electroplating Wastewater ◽  
Pickling Sludge

Pickling sludge was converted to a novel product of KFeS2 nanorods via a facile hydrothermal method that effectively removes heavy metals from electroplating wastewater.

scholarly journals Treatment of electroplating wastewaters

2020 ◽  
Vol 203 ◽  
pp. 03009
Author(s):  
Larisa Belova ◽  
Elena Vialkova ◽  
Ekaterina Glushchenko ◽  
Viacheslav Burdeev ◽  
Yuriy Parfenov
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Research Methods ◽  
Suspended Solids ◽  
Chemical Precipitation ◽  
Total Iron ◽  
Technological Scheme ◽  
Laboratory Research ◽  
Electroplating Wastewater ◽  
Pollutants Removal

In this article, the specificity of wastewaters formed at electroplating plants and problem of its treatment is considered. The purpose of this research is to suggest the technological scheme of wastewater treatment, for one of the typical electroplating plants. Standard research methods were used: gravimetrical, photometrical and fluorimetrical methods of liquid analysis to achieve this goal. This article presents the method of electroplating wastewater treatment, based on chemical precipitation, including addition of the various reagents for removing heavy metals from the effluents. Because of the laboratory research, the effects of pollutants removal are 91% (total iron) and 94.6% (suspended solids). These effects were achieved by the technological scheme that includes averaging and mixing several technological effluents, their chemical precipitation with NaOH, Ca(OH)2 and flocculant during an hour.

Simultaneous size adjustment and upconversion luminescence enhancement of β-NaLuF4:Yb3+/Er3+,Er3+/Tm3+ microcrystals by introducing Ca2+ for temperature sensing

CrystEngComm ◽  
2018 ◽  
Vol 20 (14) ◽  
pp. 2029-2035 ◽  
Author(s):  
Aihua Zhou ◽  
Feng Song ◽  
Yingdong Han ◽  
Feifei Song ◽  
Dandan Ju ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Facile Hydrothermal Method ◽  
Luminescence Enhancement ◽  
Size Adjustment

β-NaLuF4:Yb3+/Er3+ microcrystals have been obtained through a facile hydrothermal method at a relatively low temperature (180 °C) within only two hours.

scholarly journals A novel three-dimensional spherical CuBi2O4 consisting of nanocolumn arrays with persulfate and peroxymonosulfate activation functionalities for 1H-benzotriazole removal

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 8149-8158 ◽  
Author(s):  
Wen-Da Oh ◽  
Shun-Kuang Lua ◽  
Zhili Dong ◽  
Teik-Thye Lim
Keyword(s):  
Hydrothermal Method ◽  
Three Dimensional ◽  
Facile Hydrothermal Method ◽  
Self Assembled

A novel CuBi2O4 consisting of self-assembled spherical nanocolumn arrays (CuB-H) was synthesized via a facile hydrothermal method.

PCDD/F, PAH and heavy metals in the sewage sludge from six wastewater treatment plants in Beijing, China

Chemosphere ◽  
2007 ◽  
Vol 66 (2) ◽  
pp. 353-361 ◽  
Author(s):  
Jiayin Dai ◽  
Muqi Xu ◽  
Jiping Chen ◽  
Xiangping Yang ◽  
Zhenshan Ke
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Beijing China

Microscintillator of Ce Doped β-NaLuF4 in Uniform Hexagonal Prism Morphology by a Facile Hydrothermal Method

2014 ◽  
Vol 541-542 ◽  
pp. 220-224
Author(s):  
Li Sha Liu ◽  
Hao Hong Chen ◽  
Bi Qiu Liu ◽  
Bin Tang ◽  
Zhi Jia Sun ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Hexagonal Phase ◽  
Broad Band ◽  
High Energy ◽  
Hexagonal Prism ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Strong Broad Band ◽  
Broad Band Emission ◽  
Band Emission

To explore micro-or nanoscintillator with a controllable architecture, a novel facile hydrothermal method easy for commercial run was used to synthesize pure and Ce doped β-NaLuF4 microcrystals at 453K. The morphology of uniform hexagonal prism with 3.3μm in diameter and 1.4 μm in thickness, respectively, is presented by the results of scanning electron microscopy (SEM). Powder X-ray diffraction (PXRD) patterns show the products are both pure hexagonal phase. Different from the undoped product without any irradiation, the Ce doped product has given strong broad band emission attributed to 5d4f transition of Ce3+, which can be potentially used as scintillator for biomedical imaging and detectors for high energy such as X-ray and γray. This synthetical strategy extends the understanding about nanomaterial chemistry and can be also useful for other systems such as fluorides, oxides and sulfides.

Facile Synthesis of Hydroxyapatite Nanorods with Controlled Sizes and Morphologies

2010 ◽  
Vol 148-149 ◽  
pp. 1584-1587
Author(s):  
Sha Sha Lv ◽  
Ning Wang ◽  
Gui Cun Li ◽  
Hong Rui Peng
Keyword(s):  
Hydrothermal Method ◽  
Calcium Chloride ◽  
Hydrogen Phosphate ◽  
Facile Synthesis ◽  
High Quality ◽  
Facile Hydrothermal Method ◽  
Diammonium Hydrogen Phosphate ◽  
Diammonium Hydrogen

High quality hydroxyapatite (HAP) nanorods have been synthesized at 180 °C by a facile hydrothermal method using calcium chloride and diammonium hydrogen phosphate as precursors in the absence of any surfactants. The diameters and lengths of HAP nanorods are in the range of 40-80 nm and 0.2-2.0 μm respectively. The sizes and morphologies of HAP nanorods can be controlled by adjusting the synthetic parameters, such as reaction temperatures, and types of surfactants. A possible mechanism was also proposed to explain the growth of the HAP nanorods.

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