TY - JOUR
T1 - Novel application of the nonmetallic fraction of the recycled printed circuit boards as a toxic heavy metal adsorbent
AU - Hadi, Pejman
AU - Gao, Ping
AU - Barford, John P.
AU - McKay, Gordon
PY - 2013/5/5
Y1 - 2013/5/5
N2 - Printed circuit boards (PCBs) constitute one of the major sources of toxicity in landfill areas throughout the world. Hence, PCB recycling and separation of its metallic and nonmetallic components has been considered a major ecological breakthrough. Many studies focus on the metallic fraction of the PCBs due to its economic benefits whereas the nonmetallic powder (NMP) has been left isolated. In this work, the feasibility of using NMP as an adsorbent to remove charged toxic heavy metal ions have been studied and its efficiency has been compared with two widely-used commercial adsorbents. The results indicated that the virgin NMP material has no adsorption capacity, while the application of an activation stage to modify the NMP process has a significant effect on its porosity and thus adsorption capacity. The Cu and Pb removal capacity of the activated sample (A-NMP) at a pH level of 4 was 3. mmol and 3.4. mmol per gram of the adsorbent, respectively, which was considerably higher than the commercial ones.
AB - Printed circuit boards (PCBs) constitute one of the major sources of toxicity in landfill areas throughout the world. Hence, PCB recycling and separation of its metallic and nonmetallic components has been considered a major ecological breakthrough. Many studies focus on the metallic fraction of the PCBs due to its economic benefits whereas the nonmetallic powder (NMP) has been left isolated. In this work, the feasibility of using NMP as an adsorbent to remove charged toxic heavy metal ions have been studied and its efficiency has been compared with two widely-used commercial adsorbents. The results indicated that the virgin NMP material has no adsorption capacity, while the application of an activation stage to modify the NMP process has a significant effect on its porosity and thus adsorption capacity. The Cu and Pb removal capacity of the activated sample (A-NMP) at a pH level of 4 was 3. mmol and 3.4. mmol per gram of the adsorbent, respectively, which was considerably higher than the commercial ones.
KW - Adsorption
KW - Toxic heavy metal removal
KW - Waste printed circuit board
KW - Wastewater treatment
UR - https://www.scopus.com/pages/publications/84875516111
U2 - 10.1016/j.jhazmat.2013.02.037
DO - 10.1016/j.jhazmat.2013.02.037
M3 - Article
C2 - 23523907
AN - SCOPUS:84875516111
SN - 0304-3894
VL - 252-253
SP - 166
EP - 170
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -