Size Distribution of Heavy Metal Aerosols in Cooling and Spray Dryer System

1999 ◽  
Vol 125 (11) ◽  
pp. 1082-1089 ◽  
Author(s):  
Ming-Yen Wey ◽  
Jia-Tser Yang ◽  
Cherng-Yih Peng ◽  
Bo-Chin Chiang
Keyword(s):  
Heavy Metal ◽  
Size Distribution ◽  
Spray Dryer

Two-step spray-drying synthesis of dense and highly luminescent YAG:Ce3+ phosphor powders with spherical shape

RSC Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 8345-8350 ◽  
Author(s):  
Jung Sang Cho ◽  
Kyeong Youl Jung ◽  
Yun Chan Kang
Keyword(s):  
Size Distribution ◽  
Spray Drying ◽  
Spherical Shape ◽  
Potential Method ◽  
Luminescence Properties ◽  
Spray Dryer ◽  
Narrow Size Distribution ◽  
Drying Process

Two-step spray drying using a commercially available spray dryer was carried out to prepare YAG:Ce3+ phosphor particles. The two-step spray-drying process was a potential method for producing YAG:Ce3+ phosphor particles with spherical shape, narrow size distribution, and good luminescence properties.

scholarly journals Particles Released by Abused Prismatic Ni-rich Automotive Lithium-ion Batteries

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Heavy Metal ◽  
Particulate Matter ◽  
Lithium Ion Batteries ◽  
Size Distribution ◽  
Cell Mass ◽  
Lithium Ion ◽  
Element Content ◽  
Minimum Size ◽  
Three Samples ◽  
Nickel Copper

The particulate matter released by lithium-ion batteries during eruption and combustion caused by thermal runaway may contain heavy metal pollution elements. The aim of this study is to reveal four heavy metal element content and size distribution of particulate matter released by abused prismatic Ni-rich automotive lithium-ion batteries. A fully charged commercial 50 Ah Li(Ni0.6Mn0.2Co0.2)O2 cell was triggered by heating in a sealed chamber at nitrogen environment. The particulate matter with size being below 500 μm were divided into three samples using sieves. Four soil pollution elements, including nickel, copper, zinc, chromium, were detected, and sizes were analyzed. The results show that all these four elements are found, and nickel and copper are found in all samples. Among the four elements, Ni had the largest mass percentage, followed by Cu, Zn and Cr. These particulate matter account for 1.7% of the cell mass, with the minimum size and median size being approximately 1.45 μm and 162.9 um. The element content reveals the pollution from LIBs and the size distribution provides a basis for the design of the particle filter pore.

Metal content and particle size distribution of street sediments and street sweeping waste

2002 ◽  
Vol 46 (6-7) ◽  
pp. 191-198 ◽  
Author(s):  
J. German ◽  
G. Svensson
Keyword(s):  
Heavy Metal ◽  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Metal Concentration ◽  
Particle Diameter ◽  
Heavy Metal Concentration ◽  
Regression Equations ◽  
Street Sweeping ◽  
Street Sediments

During recent years the interest in street sweeping as a pollutant control measure has increased. For planning of street sweeping programs and disposal of street sweeping waste there is a need to investigate the composition of street sweeping waste and the effect of street sweeping on the remaining sediments on the street. Particle size distribution and heavy metal concentration has been measured for street sweeping waste, street sediments before sweeping and remaining sediments after sweeping. The results show that the concentrations of heavy metals are a function of particle diameter and proportional to the inverse of the particle diameter, i.e. the highest concentrations are found in finest fractions. Regression equations for metal concentrations as a function of particle diameter are presented. According to Swedish guidelines for environmental quality of contaminated sites, heavy metal concentration in the sweeping waste can not be considered as a serious problem. The largest amount of metals and sediment is found in the sandy fractions (0.125-0.5mm). The street sweeper is more effective in removing coarse sediments than fine. This means that the street sediments after sweeping are finer than the sediments before.

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