English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

An innovative method for utilizing synthetic calcium fluoride (CaF 2 ), recovered from fluoride-containing semiconductor wastewater, and waste sulfuric acid (H 2 SO 4 ) to produce hydrofluoric acid (HF) was investigated. The research was set to study the low-temperature production of HF via the reaction of synthetic CaF 2  and waste H 2 SO 4 . The impact of H 2 SO 4  concentration and total volume (H 2 SO 4  + H 2 O)/CaF 2  ratio, drying temperature of synthetic CaF 2  on HF productivity were investigated in this study. HF yield increased with increasing H 2 SO 4  concentration and total volume/CaF 2  ratio under room temperature. In addition, the HF produced in the reactions involving the 105 °C-dried synthetic CaF 2  were higher than the 600 °C-dried synthetic CaF 2  ones. The study will not only find uses for this semiconductor wastes but also provide a greener alternative to the current commercial production of HF.

A study on the low-temperature wet synthesis of hydrofluoric acid from synthetic calcium fluoride and waste sulfuric acid