magnetic separation
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2022 ◽  
Vol 178 ◽  
pp. 107394
Author(s):  
Jianwen Yu ◽  
Yanfeng Li ◽  
Yang Lv ◽  
Yuexin Han ◽  
Peng Gao

2022 ◽  
Vol 178 ◽  
pp. 107399
Author(s):  
Feiwang Wang ◽  
Shitao Zhang ◽  
Zhiqiang Zhao ◽  
Likun Gao ◽  
Xiong Tong ◽  
...  

2022 ◽  
Vol 14 (2) ◽  
pp. 919
Author(s):  
Hyeryeong Jeong ◽  
Kongtae Ra

Pollution characteristics and ecological risks for metals in non-magnetic and magnetic road dust from steel industrial areas were investigated by applying a magnetic separation method. Metal (except for Al, Li, Ti, As, and Sb) concentrations in the magnetic road dust were 1.2 (Sn) to 7.8 (Fe) times higher than those in the non-magnetic road dust. For the magnetic road dust, the geo-accumulation index revealed a strongly to extremely polluted status for Cr, Zn, Cd, and Sb, a strongly polluted status for Mn, Cu, and Pb, and a moderately to strongly polluted status for Fe, Ni, Mo, and Hg. This result indicates that the dominant metal pollution sources of road dust in industrial areas were the traffic activities of heavy-duty vehicles. The mean content of magnetic particles accounted for 44.7% of the total road dust. The metal loadings in the magnetic road dust were 86% (Fe), 77% (Cr), 67% (Mn), 86% (Ni), 76% (Cu), 72% (Zn), 64% (Mo), and 62% (Cd), respectively. Removal of the magnetic fraction from road dust using magnetic separation techniques not only reduces metal contamination but can also improve effective road cleaning strategies or reduce waste generation.


2022 ◽  
Vol 7 (1) ◽  
pp. 11-16
Author(s):  
Iveta Štyriaková

Biotechnological treatment of non-metallics is based on bacterial leaching of raw material and dissolution of Fe. Bacterial iron dissolution ability is dependent on various physicochemical factors as temperature, acidity of solutions, redox potential, rapidity of water circulation and presence of organic sources. The Fe content in the quartz sands and feldspar samples by the biological leaching decreased as much as 60% and by subsequent using of electromagnetic separation of feldspars, the decrease of Fe content in 74% was achieved. However, the application of magnetic separation of quartz sands after bioleaching resulted in total iron removal of 93% and in such combined way prepared product contained 0.024 % of Fe2O3. Achieved results on iron removal point to the fact that combination of leaching and magnetic separation enables to obtain product usable in glass and ceramic industry.


2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Sepideh Hosseiniporgham ◽  
Lucio Rebechesu ◽  
Pierangela Pintore ◽  
Stefano Lollai ◽  
Maria Dattena ◽  
...  

AbstractParatuberculosis is an incurable gastroenteritis among ruminants that is promoted by Mycobacterium avium subsp. paratuberculosis (MAP), an acid-fast mycobacterium. To accelerate the detection of viable pathogen, a conventional (peptide mediated magnetic separation: PMS) and novel (phage-bead qPCR: PBQ) phage based assay was optimized. A superior limit of detection (LOD) of 10 MAP per 10 mL milk was suggested for PBQ compared to 100 cells/10 mL for PMS-phage assay. Via PBQ, viable MAP was found in 48.78% out 41 unpasteurized sheep and goat milk samples. Sheep milk samples (n = 29) that were tested by PMS-phage assay contained no viable MAP. The absence of viable MAP in milk collected from 21 of the recent sheep animals was also confirmed by PBQ after a 2-week gap. Although, the two phage assays comparably detected no viable MAP in the milk samples, MAP DNA and antibodies against MAP were recognized in milk and sera of some of these animals within two instances of sampling representing that some sheep animals were MAP shedders. In conclusion, PBQ and PMS-phage could be promising methods for the assessment of MAP viability in milk samples. However, PBQ was privileged over the PMS-phage assay due to the lower LOD, rapidity, higher sensitivity, lack of need to M. smegmatis and consequent virucidal treatment that are essential in PMS-phage assay for making lawn and inactivation of exogenous mycobacteriophages respectively.


2022 ◽  
Author(s):  
Takahiro Sasaki ◽  
Satya Candra Wibawa Sakti ◽  
Nuryono Nuryono ◽  
Philip Anggo Krisbiantoro

2022 ◽  
Author(s):  
Sanghoon Lee ◽  
Miseon Jeong ◽  
Soojin Lee ◽  
Sang Hun Lee ◽  
Jin-sil Choi

Mag-spinner, a system in which magnets are combined with a spinner system, is a new type of magnetic separation system for the preprocessing of biological and medical samples. Interference by...


2022 ◽  
Vol 175 ◽  
pp. 107290
Author(s):  
Zixing Xue ◽  
Yuhua Wang ◽  
Xiayu Zheng ◽  
Dongfang Lu ◽  
Zixi Sun ◽  
...  

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