Advancements in the treatment and processing of electronic waste with sustainability: a review of metal extraction and recovery technologies

2019 ◽  
Vol 21 (5) ◽  
pp. 919-936 ◽  
Author(s):  
Emily Hsu ◽  
Katayun Barmak ◽  
Alan C. West ◽  
Ah-Hyung A. Park
Keyword(s):  
Green Chemistry ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Metal Recovery ◽  
Metal Extraction ◽  
Current Status

This review highlights the current status of e-waste recycling and provides insights on metal recovery from e-waste via green chemistry.

Environmentally Benign Solution for Recycling Electronic Waste Using the Principles of Green Chemistry

2014 ◽  
Vol 878 ◽  
pp. 406-412 ◽  
Author(s):  
Ping Jiang ◽  
Yu Xin Song ◽  
Bi Qin Chen ◽  
Megan Harney ◽  
Michael B. Korzenski
Keyword(s):  
Green Chemistry ◽  
Integrated Circuit ◽  
Electronic Waste ◽  
Precious Metals ◽  
Waste Recycling ◽  
Environmentally Benign ◽  
Recycling Industry ◽  
Process Chemistry ◽  
Valuable Metals ◽  
Electronic Waste Recycling

In electronic waste recycling industry, printed wire boards (PWBs)/integrated chips (ICs) recycling is one of the most challenge tasks due to the fact that PWBs/ICs are diverse and complex in terms of materials and components makeup,as well as the original equipment manufacturing processes. In this paper, we will present environmental benign solution to recover valuable metals from PWB and integrated circuit chips (ICs) dissembled from waste PWB, based on green chemistry methodologies. We will demonstrate that the process/chemistry can selectively separate and recover precious metals from base metals. The 95%-99% recovery rate of precious metals can be achieved from the recycling of PWB and integrated circuit chips.

Brominated flame retardants (BFRs) in PM2.5 associated with various source sectors in southern China

2021 ◽  
Author(s):  
qiqi li ◽  
Tao Wang ◽  
yuan zeng ◽  
yun fan ◽  
Shejun Chen ◽  
...  
Keyword(s):  
Flame Retardants ◽  
Southern China ◽  
Electronic Waste ◽  
Brominated Flame Retardants ◽  
Waste Recycling ◽  
Recycling Facilities

The present study investigated legacy and novel brominated flame retardants (BFRs) in atmospheric PM2.5 associated with various urban source sectors in a city and electronic waste (e-waste) recycling facilities in...

scholarly journals Food Waste-Assisted Metal Extraction from Printed Circuit Boards: The Aspergillus niger Route

2021 ◽  
Vol 9 (5) ◽  
pp. 895
Author(s):  
Carlotta Alias ◽  
Daniela Bulgari ◽  
Fabjola Bilo ◽  
Laura Borgese ◽  
Alessandra Gianoncelli ◽  
...  
Keyword(s):  
Solid State ◽  
Aspergillus Niger ◽  
Food Waste ◽  
Solid State Fermentation ◽  
Printed Circuit Boards ◽  
Electronic Waste ◽  
Metal Extraction ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards

A low-energy paradigm was adopted for sustainable, affordable, and effective urban waste valorization. Here a new, eco-designed, solid-state fermentation process is presented to obtain some useful bio-products by recycling of different wastes. Urban food waste and scraps from trimmings were used as a substrate for the production of citric acid (CA) by solid state fermentation of Aspergillus niger NRRL 334, with a yield of 20.50 mg of CA per gram of substrate. The acid solution was used to extract metals from waste printed circuit boards (WPCBs), one of the most common electronic waste. The leaching activity of the biological solution is comparable to a commercial CA one. Sn and Fe were the most leached metals (404.09 and 67.99 mg/L, respectively), followed by Ni and Zn (4.55 and 1.92 mg/L) without any pre-treatments as usually performed. Commercial CA extracted Fe more efficiently than the organic one (123.46 vs. 67.99 mg/L); vice versa, biological organic CA recovered Ni better than commercial CA (4.55 vs. 1.54 mg/L). This is the first approach that allows the extraction of metals from WPCBs through CA produced by A. niger directly grown on waste material without any sugar supplement. This “green” process could be an alternative for the recovery of valuable metals such as Fe, Pb, and Ni from electronic waste.

Passive Air Sampling of PCDD/Fs, PCBs, PAEs, DEHA, and PAHs from Informal Electronic Waste Recycling and Allied Sectors in Indian Megacities

2021 ◽  
Author(s):  
Paromita Chakraborty ◽  
Harish Gadhavi ◽  
Balasubramanian Prithiviraj ◽  
Moitraiyee Mukhopadhyay ◽  
Sanjenbam Nirmala Khuman ◽  
...  
Keyword(s):  
Electronic Waste ◽  
Air Sampling ◽  
Waste Recycling ◽  
Passive Air Sampling ◽  
Electronic Waste Recycling

Hepatic ethoxyresorufin-O -deethylase induction in the common kingfisher from an electronic waste recycling site

2016 ◽  
Vol 35 (6) ◽  
pp. 1594-1599 ◽  
Author(s):  
Jiang-Ping Wu ◽  
Ling Mo ◽  
Hui Zhi ◽  
Ying Peng ◽  
Lin Tao ◽  
...  
Keyword(s):  
Electronic Waste ◽  
Waste Recycling ◽  
The Common ◽  
Electronic Waste Recycling
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