{"id":964,"date":"2024-08-02T01:59:58","date_gmt":"2024-08-01T18:59:58","guid":{"rendered":"http:\/\/www.tneutron.net\/pangan\/?p=964"},"modified":"2024-07-31T13:43:20","modified_gmt":"2024-07-31T06:43:20","slug":"prosedur-dissolved-dan-biochemical-oxygen","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/pangan\/prosedur-dissolved-dan-biochemical-oxygen\/","title":{"rendered":"Prosedur Dissolved dan Biochemical Oxygen"},"content":{"rendered":"

Alat :<\/strong>
\n\u2212 Lemari pengeram BOD dengan kisaran suhu -10 hingga 500<\/sup>C dan telah distabilkan pada suhu 200<\/sup>C pada suhu pengujian
\n\u2212 Botol BOD 300 ml
\n\u2212 Aerator
\n\u2212 Gelas ukur 100 ml
\n\u2212 Gelas piala 100 ml
\n\u2212 Peralatan untuk pengujian oksigen terlarut sesuai dengan skala SNI M-10-1990-F<\/p>\n

Bahan :<\/strong>
\n\u2212 Larutan pengencer
\n\u2212 Larutan Natrium Hidroksida, NaOH, 0,1 N
\n\u2212 Larutan Asam Sulfat, H2SO4, 0,1 N
\n\u2212 Larutan Natrium Sulfit Na2SO3, 0,025<\/p>\n

Cara kerja:<\/strong>
\n\u2212 Sediakan contoh uji yang telah diambil sesuai dengan metode pengambilan contoh uji kualitas air SNI 06-2412-1991
\n\u2212 Ukur 100 ml contoh uji secara duplo dan masukan kedalam gelas piala 200 ml
\n\u2212 Apabila contoh uji bersifat asam atau basa, netralkan dengan NaOH 0,1 N atau H2SO4 sampai antara pH 6,5 \u2013 7,5
\n\u2212 Apabila contoh uji mengandung sisa Klor, Cl2, tambahkan larutan Na2SO3 0,025 N sampai semua hilang
\n\u2212 Apabila contoh uji tidak mengandung mikro organisme pengurai tambahan 1000 ml larutan pengencer sehingga pengencaran 2 kali.
\n\u2212 Apabila contoh uji diperkirakan mempunyai kadar BOD lebih dari 6 mg\/l, encerkan contoh uji dengan larutan pengencer sehingga kadar BOD antara 3-6 mg\/l
\n\u2212 Aerasi dengan Aerator selama 10 menit sampai oksigen terlarut 7-8 mg\/l
\n\u2212 Masukan kedalam 2 buah botol BOD 300 ml sampai meluap
\n\u2212 Kemudian tutup botol BOD, hindarkan terjadi turbulensi dengan gelembung udara selama pengisian
\n\u2212 Contoh uji siap diuji<\/p>\n

Persiapan pengujian :<\/strong>
\nSiapkan peralatan dan bahan penunjang uji untuk pengujian oksigen terlarut sesuai dengan SNI 06-2424-1991 Cara uji:
\n\u2212 Periksa kadar oksigen terlarut nol hari dari salah satu botol BOD yang berisi benda uji sesuai dengan metode pengujian oksigen terlarut dalam air, SNI-2424-1991
\n\u2212 Masukan botol BOD yang berisi benda uji ke dalam lemari pengeram bersuhu 200<\/sup>C
\n\u2212 Eramkan selama 5 hari
\n\u2212 Periksa kadar oksigen terlarut lima hari sesuai dengan metode pengujian oksigen terlarut dalam air SNI 06-2424-1991
\n\u2212 Apabila contoh uji diencerkan, kerjakan tahap 1 sampai 4 terhadap larutan pengencer untuk pengencaran blanko<\/p>\n

Perhitungan:<\/strong>
\nHitung kadar BOD dengan menggunakan rumus:
\n(1) Contoh uji tanpa diencerkan BOD= C0 \u2013 C5
\n(2) Contoh uji yang diencerkan BOD = C0 – C5 – k (AP0 – AP5) x p<\/p>\n

Keterangan:<\/u>
\nC0 : Kadar OT mg\/l nol hari benda uji
\nC5 : Kadar OT mg\/l lima hari benda uji
\nAp0 : Kadar OT nol hari larutan pengencer
\nAp5 : Kadar OT lima hari larutan pengencer
\nK : Koreksi sebesar (P-1)\/P
\nP : Faktor pengenceran<\/p>\n

Selisih kadar BOD maksimum yang diperbolehkan antara dua penguji duplo adalah 10 % dan rata-rata hasilnya.<\/p>\n","protected":false},"excerpt":{"rendered":"

Alat : \u2212 Lemari pengeram BOD dengan kisaran suhu -10 hingga 500C dan telah distabilkan pada suhu 200C pada suhu<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1717],"tags":[1767,1768,1769,1773,1774,1776,1771,1775,1772,1777,1770],"class_list":["post-964","post","type-post","status-publish","format-standard","hentry","category-mutu-air-untuk-industri","tag-biochemical-oxygen","tag-biochemical-oxygen-demand","tag-biochemical-oxygen-demand-bod-is-a-measure-of-the-amount-of","tag-biochemical-oxygen-demand-ap-human-geography","tag-biochemical-oxygen-demand-apes","tag-biochemical-oxygen-demand-epa","tag-biochemical-oxygen-demand-is-a-measure-of-the","tag-biochemical-oxygen-demand-lab","tag-biochemical-oxygen-demand-lab-report","tag-biochemical-oxygen-demand-levels","tag-biochemical-oxygen-demand-quizlet"],"yoast_head":"\nProsedur Dissolved dan Biochemical Oxygen - 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