CEST Proceedings are published under the ISSN 2944-9820.
An innovative and eco-friendly approach to recover gold (and copper) from gold fingers of waste printed circuit boards
Sousa P., Martelo L., Bastos M., Marques A., (Corresponding) Soares H.
Topic:
Sustainable supply of raw materials
Recycling waste printed circuit boards (WPCBs) is a complex problem worldwide and sustainable technologies are required. So, this work aims to offer an innovative (an European patent was submitted, EP 20216239.2 1) and more sustainable solution to recover high-value materials (gold and copper) from...Read more
Keywords:
E-waste, Printed circuit board recycling, Physical and chemical processes; Gold and copper recovery.
A PRELIMINARY INVESTIGATION ON THE ACCEPTANCE OF THE USE OF URINE BASED FERTILIZERS: A COMPERATIVE SURVEY WITH FARMERS AND ENVIRONMENTAL ENGINEERS
OZKAN E., (Corresponding) AKDAG Y., BELER-BAYKAL B.
Topic:
New solutions for a better and sustainable agriculture
Source separated human urine, a highly concentrated solution of nutrients, may be recycled directly or indirectly for further use as fertilizer. While environmental engineers (EnvE) recommend and set the fundamentals of this practice for valorizing a wastewater stream, farmers are the immediate...Read more
Keywords:
source separated human urine, fertilizer, nutrient recovery/recycling, acceptance of farmers and environmental engineers as occupational groups, Ecological Sanitation (ECOSAN)
An overview of the plastic waste and recycling status in Qatar
(Corresponding) Hahladakis (Chachladakis) J.
Topic:
Solid waste management
The State of Qatar has recently launched its national vision (QNV2030) underlining, therein, its full commitment to retain harmony between the main three pillars of sustainable development: economic growth, social development and environmental management. However, rapid development and "mega...Read more
