The present disclosure provides a process of separating designated oligomeric compounds from sample solutions comprising at least one contaminant In certain embodiments, the designated oligomeric compounds comprise a modified oligonucleotide and a conjugate group comprising at least one carbohydrate cluster. In certain embodiments, the present disclosure provides HPLC conditions that increase the separation of a designated oligomeric compound from at least one contaminant compared to standard HPLC conditions.

Provided are methods for determining the apolipoprotein E (ApoE) phenotype in a sample by mass spectrometry; wherein the ApoE allele(s) present in the sample is determined from the identity of the ions detected by mass spectrometry. In another aspect, provided herein are methods for diagnosis or prognosis of Alzheimer's disease or dementia.

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.

This disclosure provides a method and system for desulfurizing fuel produced from pyrolysis of waste tires including adsorbing one or more polar sulfur molecules from the tire pyrolysis oil with a regenerable adsorbent, distilling the tire pyrolysis oil to separate the tire pyrolysis oil into at least two fuel products and regenerating and reusing the regenerable adsorbent material. By combining adsorption with distillation, and advantageously recycling byproducts, the methods of this disclosure allow for conversion of waste tires into fuel in a manner that is commercially viable and sustainable.

A multi tank water softener system and method in which multiple softeners can be selectively operated in parallel, alternating, or in series in either order. The system reduces risk of legionella and pathogen growth while also reducing salt usage by up to 40%.

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

The present invention describes a method to remove metals present in a mixture comprising one or more organic amines comprising the step of contacting the mixture with a silica-polyethyleneimine adsorbent.

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

A method of producing lithium hydroxide using a variety of aqueous solutions as a source liquid. The method includes: providing a lithium ion extraction liquid, including a first mixing of an aqueous solution containing lithium and at least one kind of an element other than lithium and a base in a reaction tank, with a pH regulated to 6 or more and 10 or less, a second mixing of the aqueous solution and the base, with a pH regulated to 12 or more, and removal of a hydroxide of the element other than lithium formed through the first and second mixing; recovering only lithium ion from the lithium ion extraction liquid to a recovery liquid with an electrochemical device including a Li-selectively permeable membrane; and performing the regulation of pH by returning the lithium ion extraction liquid after recovering lithium ion with the electrochemical device to the reaction tank.

A method for extracting a metal species from a solution is described, where the metal species comprises a rare earth element, Th, or U. The method involves the use of poly(caffeic acid) as a sorbent material. The poly(caffeic acid) may be crosslinked with a diamine crosslinker such as ethylenediamine.