A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition

The Printed Circuit Board (PCB) was an insulating material as a whole, but having conductive lines printed over it or etched from it and found virtually in all sorts of Electrical and Electronic Equipment (EEE). To process the PCB in an environmentally sound manner, various techniques were under res...

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Autores principales:	Ravi Balaji, Duraisamy Prabhakaran, Marimuthu Thirumarimurugan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Solvent stripping Auto-clave treatment WPCB Electronic waste Epoxy coating removal Pre-treatment Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/808b1e103f804ab4a5144c16ca7862bf
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spelling	oai:doaj.org-article:808b1e103f804ab4a5144c16ca7862bf2021-12-01T05:07:22ZA novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition2772-397610.1016/j.clema.2021.100015https://doaj.org/article/808b1e103f804ab4a5144c16ca7862bf2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2772397621000150https://doaj.org/toc/2772-3976The Printed Circuit Board (PCB) was an insulating material as a whole, but having conductive lines printed over it or etched from it and found virtually in all sorts of Electrical and Electronic Equipment (EEE). To process the PCB in an environmentally sound manner, various techniques were under research to reduce the toxicity in the treatment process. Toxicity can be reduced by removing the epoxy coating from the PCB. In our present investigation, solvent stripping combined with autoclave treatment at 121 °C temperature under a pressure of 1.1 kg/cm2 results in 100% epoxy removal efficiency for concentration varying from 0.25 N to 4 N of Sodium hydroxide. Epoxy was completely peeled off from WPCB at a treatment time of 1 h at 0.25 N of Sodium hydroxide prior to recycling WPCB for its metals. Sodium hydroxide was regenerated by filtering the solution through Whatman No.1 filter paper of 125 mm diameter circles having a pore size of 11 μm using vacuum filtration. Sodium hydroxide regeneration was analyzed with the help of Fourier Transform Infra-Red spectroscopy analysis and the metals like copper and lead were leached from WPCB during the pre-treatment process in the NaOH solution was analyzed using Atomic Absorption Spectroscopy.Ravi BalajiDuraisamy PrabhakaranMarimuthu ThirumarimuruganElsevierarticleSolvent strippingAuto-clave treatmentWPCBElectronic wasteEpoxy coating removalPre-treatmentMaterials of engineering and construction. Mechanics of materialsTA401-492ENCleaner Materials, Vol 1, Iss , Pp 100015- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Solvent stripping Auto-clave treatment WPCB Electronic waste Epoxy coating removal Pre-treatment Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Solvent stripping Auto-clave treatment WPCB Electronic waste Epoxy coating removal Pre-treatment Materials of engineering and construction. Mechanics of materials TA401-492 Ravi Balaji Duraisamy Prabhakaran Marimuthu Thirumarimurugan A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
description	The Printed Circuit Board (PCB) was an insulating material as a whole, but having conductive lines printed over it or etched from it and found virtually in all sorts of Electrical and Electronic Equipment (EEE). To process the PCB in an environmentally sound manner, various techniques were under research to reduce the toxicity in the treatment process. Toxicity can be reduced by removing the epoxy coating from the PCB. In our present investigation, solvent stripping combined with autoclave treatment at 121 °C temperature under a pressure of 1.1 kg/cm2 results in 100% epoxy removal efficiency for concentration varying from 0.25 N to 4 N of Sodium hydroxide. Epoxy was completely peeled off from WPCB at a treatment time of 1 h at 0.25 N of Sodium hydroxide prior to recycling WPCB for its metals. Sodium hydroxide was regenerated by filtering the solution through Whatman No.1 filter paper of 125 mm diameter circles having a pore size of 11 μm using vacuum filtration. Sodium hydroxide regeneration was analyzed with the help of Fourier Transform Infra-Red spectroscopy analysis and the metals like copper and lead were leached from WPCB during the pre-treatment process in the NaOH solution was analyzed using Atomic Absorption Spectroscopy.
format	article
author	Ravi Balaji Duraisamy Prabhakaran Marimuthu Thirumarimurugan
author_facet	Ravi Balaji Duraisamy Prabhakaran Marimuthu Thirumarimurugan
author_sort	Ravi Balaji
title	A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
title_short	A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
title_full	A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
title_fullStr	A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
title_full_unstemmed	A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition
title_sort	novel approach to epoxy coating removal from waste printed circuit boards by solvent stripping using naoh under autoclaving condition
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/808b1e103f804ab4a5144c16ca7862bf
work_keys_str_mv	AT ravibalaji anovelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition AT duraisamyprabhakaran anovelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition AT marimuthuthirumarimurugan anovelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition AT ravibalaji novelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition AT duraisamyprabhakaran novelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition AT marimuthuthirumarimurugan novelapproachtoepoxycoatingremovalfromwasteprintedcircuitboardsbysolventstrippingusingnaohunderautoclavingcondition
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A novel approach to epoxy coating removal from Waste Printed Circuit Boards by solvent stripping using NaOH under autoclaving condition

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