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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">research-focus</journal-id>
      <journal-title-group>
        <journal-title>Research Focus International Scientific Journal</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Research Focus</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="epub" publication-format="electronic">2181-3833</issn>
      <publisher>
        <publisher-name>Ilm-fan va innovatsiyalar akademiyasi</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.66073/researchfocus.v4i5.1607</article-id>
      <article-id pub-id-type="other" assigning-authority="relibrary.uz">REL-A-012935</article-id>
      <article-categories>
        <subj-group subj-group-type="oak">
          <subject>02.00.00</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">SELECTIVE SEPARATION OF CALCIUM AND MAGNESIUM SALTS FROM DOLOMITE AND MODELING AND OPTIMIZATION OF PRECIPITATES FORMED WITH BICARBONATE IONS IN AQUEOUS MEDIA.</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>СЕЛЕКТИВНОЕ РАЗДЕЛЕНИЕ СОЛЕЙ КАЛЬЦИЯ И МАГНИЯ ИЗ ДОЛОМИТА И МОДЕЛИРОВАНИЕ И ОПТИМИЗАЦ ИЯ ОСАДКОВ, ОБРАЗОВАННЫХ С ИОНАМИ БИКАРБОНАТА В ВОДНЫХ СРЕДАХ</trans-title>
        </trans-title-group>
        <trans-title-group xml:lang="uz">
          <trans-title>DOLOMITDAN KALSIY VA MAGNIY TUZLARINI TANLAB AJRATISH HAMDA SUVLI MUHITDA BIKARBONAT IONLARI BILAN HOSIL BO‘LGAN CHO‘KMALARNI MODELLASHTIRISH VA OPTIMALLASHTIRISH.</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group content-type="author">
        <contrib contrib-type="author">
          <string-name>Karshiyeva Madina Mitin kizi</string-name>
          <aff>Student‘s of the Faculty of Natural Sciences of the Uzbek-Finnish Pedagogical Institute. Uzbekistan.</aff>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Kholiyorova Sabina Farkhod kizi</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Khusanov Eldor Safariddinovich</string-name>
          <aff>Candidate of Technical Sciences, PhD, teacher of the Department of Chemistry, Faculty of Natural Sciences, Uzbek-Finnish Pedagogical Institute. Uzbekistan.</aff>
        </contrib>
      </contrib-group>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-06-05">
        <day>05</day>
        <month>06</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>4</volume>
      <issue>5</issue>
      <fpage>24</fpage>
      <lpage>28</lpage>
      <permissions>
        <license xlink:href="https://creativecommons.org/licenses/by/4.0">
          <ali:license_ref>https://creativecommons.org/licenses/by/4.0</ali:license_ref>
          <license-p>This work is licensed under a Creative Commons Attribution 4.0 International License.</license-p>
        </license>
      </permissions>
      <self-uri xlink:href="https://relibrary.uz/REL-A-012935/"/>
      <abstract xml:lang="en">
        <p>This research investigates the selective separation of calcium and magnesium ions from dolomite using aqueous extraction and precipitation techniques. The study focuses on the reactions of Ca²⁺ and Mg²⁺ with bicarbonate ions (NaHCO₃ and (NH₄)₂HCO₃), leading to the formation of carbonate-based precipitates. Experimental conditions such as temperature, pH, and ionic strength are analyzed to optimize the process. Mathematical modeling is applied to simulate the behavior of the system in aqueous media. The findings contribute to enhancing the efficiency of mineral processing, softening of hard water, and environmentally friendly methods for utilizing dolomite resources.</p>
      </abstract>
      <trans-abstract xml:lang="ru">
        <p>В этом исследовании изучается селективное разделение ионов кальция и магния из доломита с использованием методов водной экстракции и осаждения. Исследование сосредоточено на реакциях Ca²⁺ и Mg²⁺ с ионами бикарбоната (NaHCO₃ и (NH₄)₂HCO₃), приводящих к образованию осадков на основе карбоната. Экспериментальные условия, такие как температура, pH и ионная сила, анализируются для оптимизации процесса. Математическое моделирование применяется для имитации поведения системы в водных средах. Результаты способствуют повышению эффективности переработки минералов, смягчению жесткой воды и экологически чистым методам использования ресурсов доломита.</p>
      </trans-abstract>
      <trans-abstract xml:lang="uz">
        <p>Ushbu tadqiqotda dolomitdan kalsiy va magniy ionlarini suvli ekstraksiya va cho‘ktirish usullari yordamida tanlab ajratish o‘rganiladi. Tadqiqot Ca²⁺ va Mg²⁺ ionlarining bikarbonat ionlari (NaHCO₃ va (NH₄)₂HCO₃) bilan reaksiyalariga qaratilgan bo‘lib, bu karbonat asosidagi cho‘kmalar hosil bo‘lishiga olib keladi. Jarayonni optimallashtirish uchun harorat, pH va ionlar kuchi kabi eksperimental sharoitlar tahlil qilinadi. Suvli muhitda tizimning xatti-harakatini simulyatsiya qilish uchun matematik modellashtirish qo‘llaniladi. Olingan natijalar minerallarni qayta ishlash samaradorligini oshirishga, qattiq suvni yumshatishga va dolomit resurslaridan foydalanishning ekologik toza usullariga hissa qo‘shadi.</p>
      </trans-abstract>
      <kwd-group xml:lang="en">
        <kwd>Dolomite</kwd>
        <kwd>calcium</kwd>
        <kwd>magnesium</kwd>
        <kwd>selective separation</kwd>
        <kwd>bicarbonate ions</kwd>
        <kwd>aqueous precipitation</kwd>
      </kwd-group>
      <kwd-group xml:lang="ru">
        <kwd>доломит</kwd>
        <kwd>кальций</kwd>
        <kwd>магний</kwd>
        <kwd>селективное разделение</kwd>
        <kwd>ионы бикарбоната</kwd>
        <kwd>водные осаждения</kwd>
      </kwd-group>
      <kwd-group xml:lang="uz">
        <kwd>Dolomit</kwd>
        <kwd>kalsiy</kwd>
        <kwd>magniy</kwd>
        <kwd>tanlab ajratish</kwd>
        <kwd>bikarbonat ionlari</kwd>
        <kwd>suvli muhitda cho‘ktirish</kwd>
      </kwd-group>
    </article-meta>
  </front>
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</article>
