{"id":465,"date":"2025-07-05T15:28:14","date_gmt":"2025-07-05T15:28:14","guid":{"rendered":"https:\/\/himatemia.eng.unila.ac.id\/?p=465"},"modified":"2025-12-04T06:37:58","modified_gmt":"2025-12-04T06:37:58","slug":"sedimentasi-2","status":"publish","type":"post","link":"https:\/\/himatemia.eng.unila.ac.id\/index.php\/2025\/07\/05\/sedimentasi-2\/","title":{"rendered":"SEDIMENTASI PADA PROSES KIMIA"},"content":{"rendered":"

\"\"<\/h2>\n

<\/h2>\n

Apa Itu Sedimentasi?<\/strong><\/h2>\n

Sedimentasi adalah proses pemisahan partikel tersuspensi dari fluida berdasarkan perbedaan densitas<\/strong>. Partikel yang memiliki massa jenis lebih besar dari medium cair akan mengalami gaya gravitasi dan turun menuju dasar wadah atau peralatan pemisahan.<\/p>\n

Dalam praktik teknik kimia, sedimentasi sering digunakan sebelum proses filtrasi, flotasi, atau pengolahan lanjutan lainnya.<\/p>\n

Prinsip Dasar Sedimentasi<\/strong><\/h2>\n

Proses sedimentasi bekerja berdasarkan beberapa prinsip ilmiah penting:<\/p>\n

1. Gaya Gravitasi<\/strong><\/h3>\n

Partikel jatuh ke bawah karena pengaruh gravitasi. Semakin besar ukuran dan massa partikel, semakin cepat proses pengendapannya.<\/p>\n

2. Hukum Stokes<\/strong><\/h3>\n

Untuk partikel kecil dalam aliran laminar, kecepatan pengendapan dapat diprediksi menggunakan Hukum Stokes<\/strong>, yaitu:<\/p>\n

v=(\u03c1p\u2212\u03c1f)gd218\u03bcv = \\frac{(\u03c1_p – \u03c1_f) g d^2}{18 \u03bc}<\/span>v<\/span>=<\/span><\/span>18\u03bc<\/span>(<\/span>\u03c1<\/span>p<\/span><\/span>\u200b<\/span><\/span>\u2212<\/span>\u03c1<\/span>f<\/span><\/span>\u200b<\/span><\/span>)<\/span>g<\/span>d<\/span>2<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

di mana:<\/p>\n

    \n
  • \n

    vv<\/span>v<\/span><\/span><\/span><\/span> = kecepatan pengendapan<\/p>\n<\/li>\n

  • \n

    \u03c1p\u03c1_p<\/span>\u03c1<\/span>p<\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>, \u03c1f\u03c1_f<\/span>\u03c1<\/span>f<\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> = densitas partikel & fluida<\/p>\n<\/li>\n

  • \n

    dd<\/span>d<\/span><\/span><\/span><\/span> = diameter partikel<\/p>\n<\/li>\n

  • \n

    \u03bc\u03bc<\/span>\u03bc<\/span><\/span><\/span><\/span> = viskositas fluida<\/p>\n<\/li>\n<\/ul>\n

    3. Sifat Suspensi<\/strong><\/h3>\n

    Karakteristik suspensi seperti ukuran partikel, bentuk, distribusi ukuran, serta konsentrasi padatan sangat memengaruhi efisiensi sedimentasi.<\/p>\n

    Jenis-Jenis Sedimentasi<\/strong><\/h2>\n

    1. Sedimentasi Tipe I (Discrete Settling)<\/strong><\/h3>\n
      \n
    • \n

      Partikel tidak saling berinteraksi.<\/p>\n<\/li>\n

    • \n

      Cocok untuk suspensi encer.<\/p>\n<\/li>\n

    • \n

      Kurva pengendapan sederhana.
      Contoh:<\/strong> pengendapan pasir dalam air.<\/p>\n<\/li>\n<\/ul>\n

      2. Sedimentasi Tipe II (Flocculent Settling)<\/strong><\/h3>\n
        \n
      • \n

        Partikel dapat saling menggumpal (flokulasi) selama pengendapan.<\/p>\n<\/li>\n

      • \n

        Digunakan pada pengolahan air limbah dan koagulasi-flokulasi.<\/p>\n<\/li>\n<\/ul>\n

        3. Sedimentasi Tipe III (Hindered Settling)<\/strong><\/h3>\n
          \n
        • \n

          Terjadi pada konsentrasi padatan tinggi.<\/p>\n<\/li>\n

        • \n

          Partikel saling menghambat kecepatan jatuhnya.
          Digunakan pada:<\/strong> thickener industri.<\/p>\n<\/li>\n<\/ul>\n

          4. Sedimentasi Tipe IV (Compression Settling)<\/strong><\/h3>\n
            \n
          • \n

            Bagian bawah lapisan padatan mengalami pemampatan.<\/p>\n<\/li>\n

          • \n

            Terjadi pada slurry sangat pekat.<\/p>\n<\/li>\n<\/ul>\n

            Peralatan Sedimentasi dalam Teknik Kimia<\/strong><\/h2>\n

            1. Sedimentation Tank \/ Clarifier<\/strong><\/h3>\n

            Digunakan dalam skala besar seperti pada pengolahan air minum dan limbah.<\/p>\n

            2. Thickener<\/strong><\/h3>\n

            Berfungsi untuk memekatkan slurry, umum pada industri tambang dan kimia.<\/p>\n

            3. Cyclone Settler atau Gravity Settler<\/strong><\/h3>\n

            Memanfaatkan area luas untuk mempercepat pengendapan.<\/p>\n

            4. Lamella Clarifier<\/strong><\/h3>\n

            Menggunakan pelat miring untuk memperbesar area pengendapan \u2192 efisiensi lebih tinggi dengan ukuran alat lebih kecil.<\/p>\n

            Faktor yang Mempengaruhi Efisiensi Sedimentasi<\/strong><\/h2>\n
              \n
            1. \n

              Ukuran dan bentuk partikel<\/strong>
              Partikel besar akan mengendap lebih cepat.<\/p>\n<\/li>\n

            2. \n

              Densitas relatif<\/strong>
              Semakin besar selisih densitas, semakin tinggi kecepatan jatuhnya.<\/p>\n<\/li>\n

            3. \n

              Viskositas fluida<\/strong>
              Fluida lebih kental menghambat pengendapan.<\/p>\n<\/li>\n

            4. \n

              Konsentrasi partikel<\/strong>
              Konsentrasi tinggi \u2192 interaksi antarpartikel semakin kuat \u2192 terjadi hindered settling.<\/p>\n<\/li>\n

            5. \n

              Desain dan geometri tangki<\/strong>
              Faktor seperti kedalaman, luas permukaan, dan waktu tinggal sangat menentukan performa.<\/p>\n<\/li>\n<\/ol>\n

              Aplikasi Sedimentasi dalam Industri<\/strong><\/h2>\n

              1. Pengolahan Air Bersih<\/strong><\/h3>\n

              Menghilangkan padatan tersuspensi sebelum filtrasi.<\/p>\n

              2. Pengolahan Limbah Cair<\/strong><\/h3>\n

              Mengendapkan lumpur, flok hasil koagulasi\/flokulasi, dan partikel organik.<\/p>\n

              3. Industri Pertambangan<\/strong><\/h3>\n

              Memekatkan slurry hasil proses flotasi atau grinding.<\/p>\n

              4. Industri Pangan<\/strong><\/h3>\n

              Pemisahan padatan seperti bubur buah, pati, dan ekstraksi minyak nabati.<\/p>\n

              5. Industri Kimia<\/strong><\/h3>\n

              Mengolah campuran slurry dan mengklarifikasi produk cair.<\/p>\n

              Kesimpulan<\/strong><\/h2>\n

              Sedimentasi merupakan proses fundamental dalam teknik kimia yang berperan penting dalam pemisahan padat\u2013cair di berbagai industri. Dengan memahami prinsip, jenis, serta faktor-faktor yang memengaruhi kinerjanya, engineer dapat merancang dan mengoperasikan sistem sedimentasi secara optimal untuk mencapai efisiensi tinggi dan hasil pemisahan yang lebih baik.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Apa Itu Sedimentasi? Sedimentasi adalah proses pemisahan partikel tersuspensi dari fluida berdasarkan perbedaan densitas. Partikel yang memiliki massa jenis lebih besar dari medium cair akan mengalami gaya gravitasi dan turun menuju dasar wadah atau peralatan pemisahan. Dalam praktik teknik kimia, sedimentasi sering digunakan sebelum proses filtrasi, flotasi, atau pengolahan lanjutan lainnya. Prinsip Dasar Sedimentasi Proses […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-465","post","type-post","status-publish","format-standard","hentry","category-artikel"],"yoast_head":"\nSEDIMENTASI PADA PROSES KIMIA - Himatemia FT Unila 2026<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/himatemia.eng.unila.ac.id\/index.php\/2025\/07\/05\/sedimentasi-2\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SEDIMENTASI PADA PROSES KIMIA - Himatemia FT Unila 2026\" \/>\n<meta property=\"og:description\" content=\"Apa Itu Sedimentasi? Sedimentasi adalah proses pemisahan partikel tersuspensi dari fluida berdasarkan perbedaan densitas. Partikel yang memiliki massa jenis lebih besar dari medium cair akan mengalami gaya gravitasi dan turun menuju dasar wadah atau peralatan pemisahan. Dalam praktik teknik kimia, sedimentasi sering digunakan sebelum proses filtrasi, flotasi, atau pengolahan lanjutan lainnya. 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Sedimentasi adalah proses pemisahan partikel tersuspensi dari fluida berdasarkan perbedaan densitas. Partikel yang memiliki massa jenis lebih besar dari medium cair akan mengalami gaya gravitasi dan turun menuju dasar wadah atau peralatan pemisahan. Dalam praktik teknik kimia, sedimentasi sering digunakan sebelum proses filtrasi, flotasi, atau pengolahan lanjutan lainnya. 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