TY - JOUR AU - AB - Background: This research deals with the manufacture of sodium sulphides and sodium sulfhydrate in an isothermal multiphase chemical reactor to produce concentrated aqueous solutions of sodium sulfhydrate (greater than 43%) through Gas-Liquid-Solid reactions from hydrogen sulfide and hydroxide of sodium at 50%. Methods: A method is proposed that integrates the recovery of hydrogen sulfide from an industrial chemical process where the H S gas is generated as a sub product, the strategy of the developed process was integrated into a manufacturing plant of dithiophosphoric acids (ADTF) where it was possible to recover the hydrogen sulfide in the form of an aqueous solution of NaHS with a concentration higher than 43%. Results: The experimental tests showed that the biphasic reaction mixture formed by Na S, NaHS and H O with global compositions of 13.3%; 26.9% and 2 2 59.7% respectively, is appropriate to obtain 43% sodium sulfhydrate in a stirred tank reactor, operated at temperatures ranging from 50°C to 55°C, where gaseous hydrogen sulfide is continually bubbled. Conclusion: Sodium sulfide (specifically Na S.5H O crystals) of the biphasic mixture is produced from a solution of sodium sulfhydrate (43% NaHS) and 2 2 aqueous sodium hydroxide (50% NaOH). The environmental problem TI - Industrial Manufacturing of Aqueous Solutions of Sodium Sulfhydrate (NaHS 43%) in a Multi-Phase Reactor JF - The Open Chemical Engineering Journal DO - 10.2174/1874123101913010046 DA - 2019-05-31 UR - https://www.deepdyve.com/lp/unpaywall/industrial-manufacturing-of-aqueous-solutions-of-sodium-sulfhydrate-0kqmfb0l7N DP - DeepDyve ER -