Data-driven prediction of copper leaching yield from brass waste using stacking ensemble learning      
Yazarlar (2)
Dr. Öğr. Üyesi Sercan BASİT Kırşehir Ahi Evran Üniversitesi, Türkiye
Murat Uyar
Bursa Uludağ Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Separation and Purification Technology
Dergi ISSN 1383-5866 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 12-2025
Cilt No 378
Sayı 1
Sayfalar 134691 / 0
DOI Numarası 10.1016/j.seppur.2025.134691
Makale Linki https://doi.org/10.1016/j.seppur.2025.134691
Özet
The recovery of valuable metals from industrial waste has become increasingly important due to the diminishing supply of primary resources and growing environmental concerns. This paper presents a stacking ensemble learning method for predicting copper leaching yield from brass melting slag under different hydrometallurgical conditions. Instead of conducting time-consuming and complex experiments, a machine-learning approach was built using a large dataset previously collected through controlled laboratory research. Six experimental variables were used as input features, including leaching time, acid concentration, hydrogen peroxide concentration, stirring speed, temperature, and solid-to-liquid ratio. The proposed model combines three tuned base learners, namely Gaussian process regression, least-squares boosting, and support vector regression, with a linear regression meta-learner. The stacking model achieved all individual models in predictive performance, yielding the lowest RMSE of 0.853, MAE of 0.668, and MAPE of 8.347 %, resulting in the highest R2 value of 0.994. The results demonstrate that the proposed method is reliable and practically feasible for predicting leaching yield and optimizing the recovery process of copper from brass waste. Furthermore, it has significant potential for supporting resource management objectives.
Anahtar Kelimeler
Brass waste | Copper leaching | Hydrometallurgical recovery | Machine learning prediction | Stacking ensemble learning