Dissolution Behaviour of Metal Elements from Several Types of E-waste Using Leaching Test

International Research and Innovation Summit 2017

Nor, Nik Hisyamudin Muhd^1 ; Nordin, Nurul Amira^1 ; Mohamad, Fariza^1 ; Jaibee, Shafizan^1 ; Ismail, Al Emran^1 ; Omar, Badrul^1 ; Ahmad, Mohd Fauzi^1 ; Rahim, Abd Khalil Abd^1 ; Kamaruddin, Muhamad Khalif Ikhwan Mohd^2 ; Turan, Faiz Mohd^3 ; Bakar, Elmi Abu^4 ; Yokoyama, Seiji^5

Engineering Design Research Group (EDRG), Department of Materials and Design Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

Golden Ecosystem SDN. Bhd., Menara Mitraland, No. 13A, Jalan PJU 5/1, PJU 5, Kota Damansara, Selangor, Petaling Jaya

47810, Malaysia^2

Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, Pekan, Pahang

26600, Malaysia^3

School of Aerospace Engineering, Universiti Sains Malaysia, Nibong Tebal, Seberang Perai Selatan, Pulau Pinang

14300, Malaysia^4

Faculty of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi Aichi, Japan^5

关键词: Dismantling process;    Dissolution behaviour;    Electrical and electronic products;    Energy dispersive X ray spectroscopy;    Hydrometallurgical process;    Increasing production;    Plasma mass spectrometers;    Scanning electrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012166/pdf
DOI  :  10.1088/1757-899X/226/1/012166

来源: IOP

【 摘 要 】

Rapid development of the electrical and electronic was increasing annually due to the demand by the human being. Increasing production of electrical and electronic product led to the increasing of electric and electronic waste or can be called as the e-waste. The UN Environment Programme estimates that the world generates 20-50 million tons of the e-waste each year and the amount is raising three times faster than other forms of municipal waste. This study is focusing on the investigation of the dissolution behaviour of metal element from several types of e-waste by hydrometallurgical process. Leaching test was conducted on the e-waste by using acid as the reagent solution. Prior to the leaching test, manual dismantling, separation, and crushing process were carried out to the e-waste. The e-waste were characterized by Scanning Electron Microcopy (SEM) and the Energy Dispersive X-ray Spectroscopy (EDX) to define the elements inside the sample of e-waste. While the liquid residue from leaching test was analyzed by using Inductively Couple Plasma-Mass Spectrometer (ICP-MS) to define the dissolution behaviour of the metal element that contain in the e-waste. It was found that the longest time for dismantling process was the dismantling of laptop. The dissolution behaviour of Fe, Al, Zn and Pb elements in the e-waste has affected to the increase of pH. The increasing pH led to the reduction of the metals element during leaching process.