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Optimization of HNO3 leaching of copper from old AMD Athlon processors using response surface methodology.

Abstract：

:The present study investigates the optimization of HNO3 leaching of Cu from old AMD Athlon processors under the effect of nitric acid concentration (%), temperature (°C) and ultrasonic power (W). The optimization study is carried out using response surface methodology with central composite rotatable design (CCRD). The ANOVA study concludes that the second degree polynomial model is fitted well to the fifteen experimental runs based on p-value (0.003), R2 (0.97) and Adj-R2 (0.914). The study shows that the temperature is the most significant process variable to the leaching concentration of Cu followed by nitric acid concentration. However, ultrasound power shows no significant impact on the leaching concentration. The optimum conditions were found to be 20% nitric acid concentration, 48.89 °C temperature and 5.52 W ultrasound power for attaining maximum concentration of 97.916 mg/l for Cu leaching in solution.

journal_name

J Environ Manage

journal_title

Journal of environmental management

authors

Javed U,Farooq R,Shehzad F,Khan Z

doi

10.1016/j.jenvman.2018.01.026

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

22-27

eissn

0301-4797

issn

1095-8630

pii

S0301-4797(18)30026-4

journal_volume

211

pub_type

杂志文章

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