Recovery of Valuable Heavy Metals from Polluted Soil Using Phytomining Process - A New Challenge for Earning Secondary Raw Materials and Health Risk Reduction

Author(s):  
Mariana Minut ◽  
Petronela Cozma ◽  
Mihaela Rosca ◽  
Ionela Catalina Vasilachi ◽  
Raluca Maria Hlihor ◽  
...  
2021 ◽  
Vol 1 (2) ◽  
pp. 60-69
Author(s):  
Tella A. ◽  
Amosu A.M.

Objective: This study assessed the effect of health risk reduction training program on waste pickers’ waste handling practices in dump sites in Ogun State, Nigeria. Methods: A quasi-experimental study was conducted among 60 waste pickers recruited by multistage sampling technique divided into intervention and control groups. There was a baseline assessment of waste handling practices in both the intervention and control groups using a structured interviewer-administered questionnaire. Thereafter, health risk reduction training was given via lectures and demonstrations. Three months after the intervention, another assessment of the same waste pickers was conducted with the same instrument. Waste handling practices and knowledge responses were measured on a 54-point rating scale and a 17-point rating scale respectively. Data was analyzed using IBM SPSS version 23 to generate descriptive and inferential results. Results: At the baseline, the waste pickers in the control group had a mean waste handling score of 17.80±6.89 while the experimental group had a mean score of 17.97±5.47. After the training program, there was a statistically significant increase in the mean waste handling score of the experimental group (47.30±3.28; p = 0.000) while there was no increase in the mean waste handling score of the control group (17.80±6.89). This significant increase in the mean waste handling score of the experimental group (53.83±0.38; p = 0.000) was also observed in a 3 month follow-up period. Conclusion/Recommendation: The health risk reduction training was effective in improving the waste handling practices of waste pickers. It is recommended that waste pickers should be trained on proper waste handling by the government.


Author(s):  
Emily Ying Yang Chan

A healthy community should have a safe and hygienic environment, with access to basic well-being maintaining facilities and services. Key messages for education programmes related to water management, indoor environment, waste management, health promoting behaviour, and disaster health risk reduction are presented in this chapter. It also aims to share some common health communication and education that might be useful to improve bottom-up resilience for health and disaster health risk reduction in rural communities. Examples from the Ethnic Minority Health Project will also be employed to illustrate how bottom-up resilience towards health and disaster risk in these rural communities might be established.


2016 ◽  
Vol 114 ◽  
pp. 27-37 ◽  
Author(s):  
Oliver Buchin ◽  
Marie-Therese Hoelscher ◽  
Fred Meier ◽  
Thomas Nehls ◽  
Felix Ziegler

2020 ◽  
Vol 56 (2) ◽  
pp. 221-228
Author(s):  
D. Orac ◽  
M. Laubertova ◽  
J. Piroskova ◽  
D. Klein ◽  
R. Bures ◽  
...  

Various types of waste, including dusts, are produced in the pyrometallurgical production of copper from secondary raw materials. According to the European Waste Catalogue and Hazardous Waste List, dusts from secondary copper production are classified as hazardous waste. In secondary copper production 3.87 million tons of copper were produced worldwide in 2017. The dusts are produced in the following thermal operations: reduction of the melt in the shaft furnace (shaft furnace dust), converting (converter dust), and pyrometallurgical refining (refining dust). These dusts contain significant amounts of heavy metals (Zn, Pb, and Sn) in oxidic forms. The dusts are regarded as secondary raw materials, and it is necessary to look for ways of extracting these heavy metals. The aim of this work was to characterize the individual types of dust and determine their quantitative and qualitative composition. The content of heavy metals in copper shaft furnace dust is (52.16% Zn, 19.33% Pb), in copper converter dust (32.40% Zn, 14.46% Pb), and in refining dust (32.99% Zn).


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