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    Basic Information

Technology developed: E-waste Recycling Process for Copper at Lab-scale (TP19765523513)
Category: Technology Service/Know how
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Sushant B. Wath NEERI EMD Principal Scientist
Dr. Atul N. Vaidya NEERI CHWMD Chief Scientist
Technical Application Area: E-Waste technologies
If 'Other', please specify:
Please give more details of new technical application area:
Valuable material recovery from Waste Printed Circuit Boards of waste electrical and electronic equipments
Organization(s):
CSIR National Environmental Engineering Research Institute (NEERI), Nagpur
Affiliated Ministry: CSIR, Govt. of India
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
No
Does the technology have export potential? No
Category of Technology developed: Futuristic
Stage of Development: Lab-scale
Please describe in detail including the TRL Level:
The process know-how were developed at the laboratory scale, and further upscaling and research is needed for precise techno-economic evaluation before commercialization.

    Abstract:

Applications: Printed circuit boards (PCBs) in electrical and electronic equipment (EEE) abide of valuable and hazardous materials and due to its complex and discrete make up across manufacturers, processing of waste PCBs (WPCBs) is a massive challenge. And therefore either completely novel or improved processes are needed for recycling of WPCBs and recovery of valuable materials from it. Present comparative study, was performed for processing WPCBs using Organic solvents. Various parameters, which include WPCB sizes, solid to liquid ratio (S:L), temperature and time, were investigated to understand the WPCBs processing by dissolving bromine epoxy resin using solvents A & B. Results showed that the rate of removal and separation of the bromine epoxy resin (BER) increases with respect to increasing various parameters. Optimum condition of complete separation of WPCBs using A were S:L ratio of 1:5, WPCB size of 4 mm and 100 degree C for 90 minutes, whereas for Solvent B the optimum dissolution of bisphenol A were obtained in S:L ratio of 1:2, size of 6 mm at 90 degree C for 90 min. Overall, Solvent A proves to be better solvent for bromine epoxy resin than Solvent B in terms of bisphenol A dissolution and separation of various layers of WPCB.
Advantages: -Used solvents can be vaporized–condensed under the decompression for regeneration. - Regenerated solvent can be reused -This process can be an eco-friendly and effective option for separation and recovery of various valuable materials such as metals, glass fibres, etc. from WPCBs.

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Imported Raw Materials:
Raw Materials Year ITC-HS Code
NA
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
NA
Existing R&D Facilities used:
Facilities Year ITC-HS Code
NA

   Patents & Publications:

Patents:
Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Publications:
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees? E-waste Recycling Industry
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Yes
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
No
      Submitted by: Sushant Wath Date of Submission: 6-9-2021



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