"Recovery of the rare earth elements ytterbium and lanthanum in an aqueous medium by biosorption using particles produced from a natural polymeric blend based on sericin, alginate and poly(vinyl alcohol)" (PhD). Candidate: Talles Barcelos da Costa. Advisor: professor Melissa Gurgel Adeodato Vieira. August 4, 2021, at 14 pm, via video conference.