Microbial hydrogen consumption leads to a significant pH increase under high-saline-conditions: implications for hydrogen storage in salt caverns.

Salt caverns have been successfully used for natural gas storage globally since the 1940s and are now under consideration for hydrogen (H) storage, which is needed in large quantities to decarbonize the economy to finally reach a net zero by 2050. Salt caverns are not sterile and H is a ubiquitous electron donor for microorganisms. This could entail that the injected H will be microbially consumed, leading to a volumetric loss and potential production of toxic HS.

Solubilization of 1-hexanol in aqueous solutions of sodium dodecyl sulfate at pressures up to 140 MPa: partial molar volumes, compressibilities, and partition coefficients.

Partial molar volumes and partial molar compressibilities of aqueous solutions of sodium dodecyl sulfate (SDS) and 1-hexanol at pressure up to 140 MPa have been determined. For aqueous SDS solutions the partial molar compressibility increases with pressure below the cmc and decreases with pressure above the cmc. The partial molar compressibility of aqueous 1-hexanol increases with pressure.

[Use of the B-Lynch suture technique in postpartum hemorrhage].

Background: Serious postpartum haemorrhage occurs in approximately 1.4% of all deliveries in Norway and may result in hysterectomy. Stepwise devascularisation and hysterectomy are technically difficult and time consuming.