@misc{10481/110988,
year = {2026},
month = {2},
url = {https://hdl.handle.net/10481/110988},
abstract = {Textile waste management remains a critical environmental challenge. Valorization through thermochemical routes such as pyrolysis offers a sustainable pathway within the circular economy. In this study, carbonaceous materials were obtained from the pyrolysis of 100% cotton textile residues and subsequently activated with sodium thiosulfate (Na2S2O3). The physicochemical and leaching behaviors of the activated (CA) and non-activated (C) chars were assessed in aqueous solution under controlled pH conditions (3, 7, and 11). Activation significantly increased the specific surface area (from 90 to 975 m2 g−1). Leaching tests revealed that acidic conditions (pH = 3) enhanced the release of major elements following the order Na > Ca > K for C and S > Ca > Na for CA. Despite this, all concentrations of major and trace metals remained well below regulatory discharge limits. Anionic species (Cl−, SO42−) increased slightly after activation but also stayed within safe thresholds, and chemical oxygen demand (COD) values were low (0–9 mg O2 L−1), indicating negligible organic leaching. Overall, the findings show that the structural quality of textile-derived chars was improved by Na2S2O3 activation without compromising their environmental stability, validating their applicability as effective and safe adsorbents for wastewater treatment applications.},
organization = {State Research Agency 10.13039/50110001103 - (PID2022-139014OB-I00/SRA)},
publisher = {MDPI},
keywords = {Textile waste},
keywords = {Pyrolysis char},
keywords = {Sodium thiosulfate activation},
title = {Analysis of Leachates in Activated Char from Textile Sources: Implications for Their Use as Adsorbents},
doi = {10.3390/app16041870},
author = {Arjona, Lourdes and Calero De Hoces, Francisca Mónica and Quintana, María Alejandra and Rodríguez Solís, Rafael and Martín Lara, María Ángeles},
}