A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Utilization of waste sodium sulfate from battery chemical production in neutral electrolytic pickling (2021)

Tuovinen, T., Tynjälä, P., Vielma, T., & Lassi, U. (2021). Utilization of waste sodium sulfate from battery chemical production in neutral electrolytic pickling. Journal of Cleaner Production, 324, Article 129237. https://doi.org/10.1016/j.jclepro.2021.129237

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Tuovinen, Teemu; Tynjälä, Pekka; Vielma, Tuomas; Lassi, Ulla

Lehti tai sarja: Journal of Cleaner Production

ISSN: 0959-6526

eISSN: 1879-1786

Julkaisuvuosi: 2021

Volyymi: 324

Artikkelinumero: 129237

Kustantaja: Elsevier

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.jclepro.2021.129237

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/78255

Tiivistelmä

Several industrial activities produce metal sulfates, which are controlled by strict limitations for wastewater concentrations of sulfate. One emerging area where these activities occur is the production of lithium-ion battery chemicals in which sodium sulfates are formed because of cathode precursor co-precipitation. Several solutions for sulfate removal exist, but one option is to reuse the sulfate side stream in other processes to increase circular economy and atom efficiency. In this paper, the reuse of sodium sulfate solution in a steel industry pickling solution is considered. Neutral electrolytic pickling experiments were carried out to compare the pickling behavior of the electrolyte dissolved from pure sodium sulfate and the electrolyte diluted from a side stream solution. Effect of impure electrolyte was evaluated using field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectrometry (EDS). Concentrations of the metal ions were determined by inductively coupled plasma-optical emission spectrometry (ICP-OES). The results indicated a slight increase in current efficiency with the side stream electrolyte solution, while overall the pickling behavior remained similar. This suggests that a side stream sodium sulfate solution could be used as a pickling electrolyte, reducing the need for pure reagents.

YSO-asiasanat: energiateollisuus; akut; teollisuusjätevesi; jäteveden käsittely; sulfaatit; talteenotto; uudelleenkäyttö; terästeollisuus; elektrolyysi

Vapaat asiasanat: Sodium sulfate; Battery chemical; Electrolytic pickling

Liittyvät organisaatiot

OKM-raportointi: Kyllä

Raportointivuosi: 2021

JUFO-taso: 2