A system includes at least one reusable nutrient cartridge including an outer housing having an inlet and an outlet, and nutrient-adsorbing material contained within the housing, the material being configured to adsorb nutrients, wherein the cartridge is configured to be charged with nutrients by flowing a nutrient stream through the inlet, through the nutrient-adsorbing material, and through the outlet to enable the nutrient-adsorbing material to adsorb the nutrients, wherein the cartridge is also configured to be later discharged of the nutrients by flowing water through the inlet, through the nutrient-adsorbing material, and through the outlet so as to transfer the nutrients to the water to generate a dilute nutrient solution suitable for use as a fertilizer.

The purpose of the present disclosure is to provide a method for regenerating a highly water-absorbing polymer that has been deactivated by an acid, the method enabling formation of a highly water-absorbing recycled polymer having predetermined water absorption properties. The regeneration method according to the present disclosure is configured as follows. This method regenerates a highly water-absorbing polymer that has been deactivated by an acid into a highly water-absorbing recycled polymer having predetermined water absorption properties. The method includes: a preparation step (S1) for preparing a highly water-absorbing polymer which has an acid group and which has been deactivated by an acid; a highly water-absorbing recycled polymer-forming step (S3) for adding an alkali metal ion source, which can supply an alkali metal ion, to a regeneration-use aqueous solution that contains the highly water-absorbing polymer that has been deactivated by an acid, and forming the highly water-absorbing recycled polymer in a wet state from the highly water-absorbing polymer that has been deactivated by the acid; and a drying step for drying the highly water-absorbing recycled polymer in a wet state and forming the highly water-absorbing recycled polymer having the predetermined water absorption properties.

The invention relates to systems and methods for disinfecting, recharging, and conditioning zirconium phosphate in a reusable sorbent module. The systems and methods provide for reuse of a zirconium phosphate sorbent module after dialysis.

Disclosed herein are methods for the recovery of target bio-based products using a sorption-based technology with a mixed elution solvent optimized for minimized downstream distillation energy input.

The invention provides methods and systems for washing adsorptive media with minimal water consumption. More specifically, the invention provides methods and systems for in situ regeneration and/or sanitization of adsorptive media, such as activated carbon, using back-and-forth washing.

Systems for separating Ra from a mixture comprising at least Ra, Pb, Bi, and Th are provided. The systems can include: a first vessel housing a first media and Th or Bi; a second vessel in fluid communication with the first vessel, the second vessel housing a second media and Pb; and a third vessel in fluid communication with the second vessel, the third vessel housing a third media and Ra, wherein at least one of the first, second, or third medias are different from the other media.

Methods for separating Ra from Pb, Bi, and Th are provided, the methods can include: providing a first mixture comprising Ra, Pb, Bi, and/or Th; providing a system that can include: a first vessel housing a first media; a second vessel in fluid communication with the first vessel, the second vessel housing a second media; and a third vessel in fluid communication with the second vessel, the third vessel housing a third media; and exposing the first mixture to the first media within the first vessel then, through the fluid communication, exposing the first remainder to the second media in the second vessel, then, through fluid communication, exposing the next remainder to the third media in the third vessel, the exposing separating the Th and Bi from the Ra and Pb, and the Ra from the Pb.

Methods for separating Ra from being associated with a media are also provided. The methods can include: exposing the Ra and media to a chelating agent to form a mixture comprising the Ra complexed with the chelating agent.

A method of purifying radiochemical species (e.g., radiopharmaceuticals) using thin layer chromatography (TLC) plates includes loading one or more TLC plates with a sample containing the radiochemical species to be purified. The one or more TLC plates are then developed with a mobile phase. The one or more developed TLC plates are then imaged to obtain radioactivity image(s) of the one or more TLC plates. Optional UV images may also be obtained using the same imaging platform. The location of the radiochemical species on the one or more TLC plates is identified from the radioactivity image(s). The radiochemical species on the one or more TLC plates is/are removed at the identified locations. Removal may be accomplished using a mechanical process such as scraping or punching. Alternatively, non-destructive techniques may be employed to remove the radiochemical species from the TLC plate(s).

Sorbent compounds useful in the extraction of lithium from liquid sources such as brines (naturally occurring and synthesized), leachate solutions from the leaching of minerals or recycled materials, and others are described. The sorbent compounds are characterized by a larger median particle size and coarser particle size distribution that improves commercial synthesis and performance of the sorbent compounds.

The present invention relates to a process for continuous purification of yellow phosphorus by adsorption onto activated carbon.

A nucleophilic substitution reaction to crosslink cyclodextrin (CD) polymer with rigid aromatic groups, providing a high surface area, mesoporous CD-containing polymers (P-CDPs). The P-CDPs can be used for removing organic contaminants from water. By encapsulating pollutants to form well-defined host-guest complexes with complementary selectivities to activated carbon (AC) sorbents. The P-CDPs can rapidly sequester pharmaceuticals, pesticides, and other organic micropollutants, achieving equilibrium binding capacity in seconds with adsorption rate constants 15-200 times greater than ACs and nonporous CD sorbents. The CD polymer can be regenerated several times, through a room temperature washing procedure, with no loss in performance.