The expanded perlite was studied as adsorbent for removing of Cu 2+ ion from contaminated water. The test conditions were following: pH = 2 -11; a perlite dosage 0,1 -1 g; ratio solution: sorbent = 20 -500 ml : 1 g; basic concentration of the Cu 2+ ions 0,5 and 5 mg.1 -1 , laboratory temperature. The results showed that the perlite shifts the pH value of solutions which have the pH in region of 4 -9 to neutral region 6 -7. The pH value of solution was adjusted by HCl/NaOH and McIlvaine (citric acid/Na 2 HPO 4 ); and Sőrensen (Na 2 HPO 4 /KH 2 PO 4 ) buffer. Top-tests were carried out with solution adjusted by HCl/NaOH. The removing of Cu 2+ ions from water relates with the basicity of aqueous solutions. If the ratio of perlite to solution with Cu 2+ concentration of 5 mg.l -1 is 1 g : < 40 ml the removal of Cu 2+ ions from solution rapidly increases in interval of pH from 4,5 to 5,5 and at pH ≥ 6 achieves a maximum. For these properties perlite is used as fireproof insulating material, sorbent of oil, filter material and vitrificator [1][2][3][4][5][6][7]. The more water contamination grows in nature, the more interest is focused at sorbents and immobilizers of surface-active substances. Different raw materials on carbonate and aluminosilicate base can be used to elimination of heavy metals from contaminated water [8][9][10][11][12][13]. Perlite is considered a suitable sorbent and immobilizer of metal cations, nanoparticles and microorganisms [10][11][12][13][14][15][16][17][18][19].
Advanced cervical cancer can lead to life-threatening vaginal bleeding. Emergency uterine artery embolization (UAE) has been successfully used in such cases to achieve hemostasis. Our case demonstrates the unusual emergency use of this procedure to cease heavy hemorrhage, which led to hematometra, uterine rupture and hemoperitoneum in a patient with a large tumor in the cervical region. Vaginal bleeding was minimal in this case. The emergency UAE controlled the bleeding, and the patient was scheduled for laparotomy soon after the procedure, where a supracervical hysterectomy with bilateral salpingo-oophorectomy and the removal of blood and blood clots was performed. Since the tumor primarily involved the parametria, a sample was taken for histopathology examination with the following result: squamocellular HPV-associated cervical carcinoma. The postoperative management of the patient consisted of combined chemotherapy and radiotherapy, with no complications related to the UAE. Four months after the procedure the patient is reasonably well. Urgent surgery was not the optimal decision because of the alteration of the pelvic anatomy by the tumor, and thus the UAE enabled us to manage this life-threatening condition quickly, allowing us to best prepare the patient for further therapeutic modalities.
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