The aim of this study is to select an efficient, inexpensive adsorbent for the removal synthetic dyes from wastewater textile industry. We used waste products obtained during regeneration ion-exchange resins formed highly saline aqueous solutions calcium and magnesium that do not require pre-treatment, as well magnesite minerals contain traces impurities, such Fe, Zn, Co, Cd, Mn. spectrophotome...

Diamonds from the Rio Sorriso placer in Juina area, Mato Grosso State, Brazil, contain mineral inclusions of ferropericlase associated with MgSiO3, CaSiO3, magnesite, merrillite, and other minerals. The diamonds are resolved into two distinct genetic compositional groups: (1) protogenetic, high-Ni low-Fe (Ni = 8270–10,660 ppm; mg# 0.756–0.842) ferropericlases, (2) syngenetic, low-Ni high-Fe 600...