MyJournals Home  

RSS FeedsSustainability, Vol. 11, Pages 3307: Remediation of Potential Toxic Elements from Wastes and Soils: Analysis and Energy Prospects (Sustainability)

 
 

15 june 2019 12:00:16

 
Sustainability, Vol. 11, Pages 3307: Remediation of Potential Toxic Elements from Wastes and Soils: Analysis and Energy Prospects (Sustainability)
 




The aim of this study is to evaluate the application of the main hazardous waste management techniques in mining operations and in dumping sites being conscious of the inter-linkages and inter-compartment of the contaminated soils and sediments. For this purpose, a systematic review of the literature on the reduction or elimination of different potential toxic elements was carried out, focusing on As, Cd and Hg as main current contaminant agents. Selected techniques are feasible according to several European countries` directives, especially in Spain. In the case of arsenic, we verified that there exists a main line that is based on the use of iron minerals and its derivatives. It is important to determine its speciation since As (III) is more toxic and mobile than As (V). For cadmium (II), we observed a certain predominance of the use of biotic techniques, compared to a variety of others. Finally, in mercury case, treatments include a phytoremediation technique using Limnocharis flava and the use of a new natural adsorbent: a modified nanobiocomposite hydrogel. The use of biological treatments is increasingly being studied because they are environmentally friendly, efficient and highly viable in both process and energy terms. The study of techniques for the removal of potential toxic elements should be performed with a focus on the simultaneous removal of several metals, since in nature they do not appear in isolation. Moreover, we found that energy analysis constitutes a limiting factor in relation to the feasibility of these techniques.


Del.icio.us Digg Facebook Google StumbleUpon Twitter
 
28 viewsCategory: Ecology
 
Sustainability, Vol. 11, Pages 3308: Gardeners` Past Gardening Experience and Its Moderating Effect on Community Garden Participation (Sustainability)
Sustainability, Vol. 11, Pages 3306: The Social and Vocational Integration of Former Users of the Child Protection System in Romania: A Qualitative Study (Sustainability)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Ecology

Use these buttons to bookmark us:
Del.icio.us Digg Facebook Google StumbleUpon Twitter


Valid HTML 4.01 Transitional
Copyright © 2008 - 2019 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn