NDLI: Thermogravimetric Analysis and Kinetic Study of Biochemically Pretreated Printed Circuit Board Wastes

Please wait, while we are loading the content...

Antioxidant Activity and Total Phenolic Content of Oils Extracted from Pinus pinaster Sawdust Waste. Screening of Different Innovative Isolation Techniques

Anaerobic Biodegradation of Cellulose–Xylan–Lignin Nanocomposites as Model Assemblies of Lignocellulosic Biomass

E. grandis as a Biocarbons Precursor for Supercapacitor Electrode Application

Waste and Biomass Valorization : Volume 5, Issue 1, February 2014

Waste and Biomass Valorization : Volume 4

Waste and Biomass Valorization : Volume 3

Waste and Biomass Valorization : Volume 2

Waste and Biomass Valorization : Volume 1

Thermogravimetric Analysis and Kinetic Study of Biochemically Pretreated Printed Circuit Board Wastes

Content Provider	Springer Nature Link
Author	Chan, O. Valix, M.
Copyright Year	2013
Abstract	The problems with e-waste have received significant attention worldwide. This study examined the recovery of energy and materials from the epoxy component of e-waste by pyrolysis. The potential to reduce the pyrolysis temperature through pre-degradation was considered. Pre-degradation was conducted by immersing epoxy wastes in biometabolic acids including sulphuric, nitric, lactic, citric, and malic acids. For the purpose of this screening test, this was conducted over a short period of time, 6 h. The thermal degradation of the neat and pretreated epoxy e-waste were studied using thermogravimetric analysis. The neat epoxy demonstrated thermal degradation from 300 to 400 °C, with maximum weight loss at around 350 °C. Preliminary screening test demonstrated the degradation of all pre-treated epoxy samples. All treated samples showed shifts in degradation to lower temperatures and loss of specific functional group characteristics of depolymerisation. The polarity of the acids appears to play a role in easing the accessibility and thus attack of the epoxy. Organic acids with lower polarity induced higher shift in degradation temperature in comparison to mineral acids. Kinetic analysis was conducted by dynamic and isothermal analyses. The dynamic analysis revealed the pre-treatment with acids resulted in lowering of the activation energies of pyrolysis (E$_{A}$) from 251.6 to 228.7 kJ mol$^{−1}$ and the frequency factors (A) from 9.63 × 10$^{20}$ to 1.44 × 10$^{20}$ min$^{−1}$. The reduction in kinetic parameters was also confirmed in the isothermal study, where it was revealed the effect of pre-treatment on the pyrolysis kinetics of epoxy is greater, with 2 stage degradation, where the reduction of activation energy was less than half of the raw epoxy. These lower kinetic parameters (E$_{A}$ and A) are indicative of the reduction in the thermal stability of the epoxy resulting from partial degradation. These results demonstrate the efficacy of acid induced pre-degradation of epoxy as a method for reducing the energy requirement of pyrolysis.
Starting Page	211
Ending Page	222
Page Count	12
File Format	PDF
ISSN	18772641
Journal	Waste and Biomass Valorization
Volume Number	5
Issue Number	2
e-ISSN	1877265X
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pyrolysis Acid pretreat WEEE Dynamic Isothermal Kinetics Engineering Environment Renewable and Green Energy Industrial Pollution Prevention Waste Management/Waste Technology Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Waste Management and Disposal Environmental Engineering Renewable Energy, Sustainability and the Environment

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Valorization of Printed Circuit Boards from Waste Electrical and Electronic Equipment by Pyrolysis

Kinetic Study of Low Density Polyethylene Using Thermogravimetric Analysis, Part 2: Isothermal Study

Chemical Recycling of Printed Circuit Board Waste by Depolymerization in Sub- and Supercritical Solvents

Thermogravimetric Analysis of Rubber Glove Pyrolysis by Different Iso-conversional Methods

Kinetic Modeling of the Polychloroprene Pyrolysis Under Nitrogen Atmosphere

Kinetic Parameters Determination of Biomass Pyrolysis Fuels Using TGA and DTA Techniques

Pyrolysis Analysis and Solid Residue Stabilization of Polymers, Waste Tyres, Spruce Sawdust and Sewage Sludge

Pyrolysis of Olive Pomace: Degradation Kinetics, Gaseous Analysis and Char Characterization

Pyrolysis Behaviour and Kinetic of Coal Tar Pitch Modified with Paraformaldehyde

Thermogravimetric Analysis and Kinetic Study of Biochemically Pretreated Printed Circuit Board Wastes

Similar Documents

Valorization of Printed Circuit Boards from Waste Electrical and Electronic Equipment by Pyrolysis

Kinetic Study of Low Density Polyethylene Using Thermogravimetric Analysis, Part 2: Isothermal Study

Chemical Recycling of Printed Circuit Board Waste by Depolymerization in Sub- and Supercritical Solvents

Thermogravimetric Analysis of Rubber Glove Pyrolysis by Different Iso-conversional Methods

Kinetic Modeling of the Polychloroprene Pyrolysis Under Nitrogen Atmosphere

Kinetic Parameters Determination of Biomass Pyrolysis Fuels Using TGA and DTA Techniques

Pyrolysis Analysis and Solid Residue Stabilization of Polymers, Waste Tyres, Spruce Sawdust and Sewage Sludge

Pyrolysis of Olive Pomace: Degradation Kinetics, Gaseous Analysis and Char Characterization

Pyrolysis Behaviour and Kinetic of Coal Tar Pitch Modified with Paraformaldehyde

Thermogravimetric Analysis and Kinetic Study of Biochemically Pretreated Printed Circuit Board Wastes