A method for removing liquid, gaseous andor dissolved constituents from an aqueous stream includes contacting the aqueous stream with a porous material and then contacting the aqueous stream with an adsorbent material. A method of delivering a pelvic floor repair implant in a transvaginal implant procedure includes inserting and deploying at least a portion of the medical device into a pelvic region of a body. A carbon dioxide storage means stores the carbon dioxide released in a heat exchanger. Each of the separators has a porous substrate and porous coating layers formed on both surfaces of the porous substrate.