公开(公告)号：US20250114748A1

公开(公告)日：2025-04-10

申请号：US18482439

申请日：2023-10-06

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Muhammad SAJID ,  Mazen Khaled NAZAL ,  Durga Rao GIJJAPU

IPC: B01D61/24 ,  B01D11/04 ,  B01D63/04 ,  G01N1/34 ,  G01N1/40 ,  G01N33/487

Abstract: A membrane-based inverted liquid-liquid extraction method for extracting an analyte from an unsupported aqueous liquid sample includes sealing the unsupported aqueous liquid sample in a porous membrane bag, immersing the porous membrane bag in an organic solvent, and extracting the analyte from the unsupported aqueous liquid sample to produce an extract within the organic solvent. The unsupported aqueous liquid sample is immiscible with the organic solvent. The porous membrane bag does not contain a solid sorbent.

公开(公告)号：US20250110099A1

公开(公告)日：2025-04-03

申请号：US18480165

申请日：2023-10-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mazen Khaled NAZAL ,  Nabeel Saeed Fuad ABUZAID ,  Durga Rao GIJJAPU

IPC: G01N33/18 ,  C01B32/318

Abstract: A membrane-biochar strip for water sampling includes two porous polymeric membrane sheets having the same dimension. The two porous polymeric membrane sheets have an average pore size of about 50 to 150 micrometers (μm). Seagrass biochar (SGBC) particles are disposed between two porous polymeric membrane sheets resulting in a sandwich structure. An edge of the sandwich structure is sealed, and the SGBC particles are encapsulated in the membrane-biochar strip. The SGBC particles have an average particle size of about 150 to 400 μm. The seagrass biochar (SGBC) particles are prepared from Halodule Uninervis seagrass.