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PROSES PENGOLAHAN LOGAM BERAT KHROM PADA LIMBAH CAIR PENYAMAKAN KULIT DENGAN EPS TERIMOBILISASI Rahmahida, Nia Anisti; Salimin, Zainus; Junaidi, Junaidi
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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ABSTRACTLeather tanning industryproduced waste water contained of heavy metal Chrom that can be dangerous for the environment. One of the methods to remove Cr in  wastewater was used Extracellular Polymeric Substances (EPS) that extracted from the activated sludge. This research was done with used EPS that immobilized in epoxy resin as adsorbent and used artificial waste water with concentration of 15,9 ppm. This research was done in continuous and recirculation process with variable of pH 5, 6, 7 and the flows were 3, 5, 7 ml/min.  The result showed that the best adsorption happened in pH 5, the flowwere 3 ml/minwith the adsorption capacity was 6,382 mg/g EPS-epoxy and the removal efficiency was 89,2 %
PENGOLAHAN LOGAM BERAT KHROM (CR) PADA LIMBAH CAIR INDUSTRI PENYAMAKAN KULIT DENGAN PROSES KOAGULASI FLOKULASI DAN PRESIPITASI Giacinta AS, Maria; Salimin, Zainus; Junaidi, Junaidi
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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ABSTRACTLeather tannery industry waste water treatment research by coagulation flocculation and precipitation process has been carried out. The study aims to determine the treatment process with coagulant what is most optimum in removing the heavy metal content in leather tannery waste water, which includes coagulant lime, aluminum sulfate, and ferrous sulfate, and barium chloride, coagulant concentration, and pH optimum. Jar test result available optimum pH for coagulant lime at pH 8, for aluminum sulfate at pH 6, and for ferrous sulfate at pH 8. The optimum ratio of lime is 6,4; aluminum sulfate is 0,8; and ferrous sulfate is 0,48. The optimum concentration of barium chloride after treatment with lime, aluminum sulfate, and ferrous sulfate are 0,005; 0,043; and 0,005.
Heavy Metals Biosorption Phenomena Of Cr, Fe, Zn, Cu, Ni, And Mn on the Biomass of Mixed Bacteria of Bacillus, Pseudomonas, Arthrobacter and Aeromonas Salimin, Zainus; Nuraeni, Endang
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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The bacterial biomass having the capability of ions biosorption is utilized for the treatment of industrial waste water containing ions pollutant. The Extracellular Polymeric Substance (EPS) on the bacteria functions to support that biosorption mechanism. The EPS has the composition of polysaccharides (40-95% of total EPS), protein (1-60%), nucleic acids (1-10%), lipids (1-10%), and polymer of amino acid and other compounds of bacterial origin. The result of experiment indicates that the pH of 7 and process period of 560 hours was the best of process condition giving the decreasing of BOD and COD on the value of 38 and 74 ppm. On the pH of 6 and 8 the value of BOD and COD are 52 and 102 and 47 and 92 respectively
PROSES OKSIDASI BIOKIMIA UNTUK PENGOLAHAN LIMBAH SIMULASI CAIR ORGANIK RADIOAKTIF Gunandjar, Gunandjar; Salimin, Zainus; Purnomo, Sugeng; Ratiko, Ratiko
Jurnal Forum Nuklir JFN Vol 4 No 1 Mei 2010
Publisher : BATAN

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Kegiatan industri nuklir menimbulkan limbah cair organik seperti limbah detergen dari pencucian pakaian kerja, pelarut 30% TBP (tri-n-butyl phosphate) dalam kerosen dari pemurnian ataupun pengambilan uranium dari gagalan fabrikasi elemen bahan bakar, pelarut yang mengandung D2EHPA (di-2-ethyl hexyl phosphoric acid) dan TOPO (trioctyl phospine oxide) dalam kerosin dari pemurnian asam fosfat. Limbah tersebut bersifat bahan berbahaya dan beracun (B-3) serta radioaktif, oleh karena itu limbah tersebut harus diolah sehingga terjadi detoksifikasi B-3 dan dekontaminasi radionuklidanya. Telah dilakukan penelitian proses oksidasi biokimia pengolahan limbah simulasi cair organik radioaktif dari pencucian pakaian kerja menggunakan campuran bakteri mutan aerob bacillus sp, pseudomonas sp, arthrobacter sp, dan aeromonas sp. Limbah berkadar deterjen 1,496 g/L, aktivitas 10-1Ci/m3, dengan COD (Chemical Oxygen Demand) 128, BOD (Biological Oxygen Demand) 68 dan TSS (Total Suspended Solid) 1000 ppm, diolah dengan oksidasi biokimia dengan penambahan bakteri yang diberi nutrisi nitrogen dan fosfor, dan diaerasi. Hasilnya menunjukkan bahwa bakteri mampu menguraikan detergen menjadi karbon dioksida dan air sehingga memenuhi baku mutu air golongan B dengan kadar BOD dan COD berturut-turut berharga 6 dan 0 ppm, diperlukan waktu penguraian 106 jam untuk pemenuhan baku mutu tersebut. Semakin lama waktu proses memberikan kadar padatan total dalam lumpur semakin besar karena biomassa yang terbentuk dari massa koloni bakteri yang hidup dan mati semakin banyak.
PENGOLAHAN LIMBAH INDUSTRI ELEKTROPLATING DENGAN PROSES KOAGULASI FLOKULASI Nurhasni, Nurhasni; Salimin, Zainus; Nurfitriyani, Ita
Jurnal Kimia Valensi Jurnal Valensi Volume 3, No.1, Mei 2013
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Syarif Hidayatullah State Islamic Uni

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Abstract

Penelitian pengolahan limbah industri elektroplating dengan proses koagulasi flokulasi telah dilakukan. Penelitian bertujuan untuk mengetahui proses pengolahan dengan koagulan FeCl3 dalam menurunkan kandungan logam berat pada limbah elektroplating, rasio massa koagulan dan limbah, pH optimum dan massa KI optimum untuk mereduksi Cr6+ menjadi Cr3+. Hasil jar test diperoleh pH optimum yaitu pH 8. Massa optimum KI untuk mereduksi Cr6+ menjadi Cr3+ yaitu 0,3 g. Penurunan kadar krom dengan proses reduksi sebesar 83,36 mg/L atau persentase penyisihan sebesar 95,02 %  sedangkan penurunan optimal kadar Cr tanpa reduksi yaitu sebesar 87,32 mg/L atau 99,51 %. Penggunaan koagulan FeCl3 pada pengolahan limbah industri elektroplating dapat menurunkan kadar logam berat Fe, Cr, Zn, Cu, Ni dan Mn sampai pada nilai baku mutunya.   Kata Kunci : Koagulasi flokulasi, Ferri klorida, Limbah simulasi elektroplating, Jar test, SSA.
PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METODE OKSIDASIBIOKIMIA Salimin, Zainus; Gunandjar, Gunandjar
Buletin Limbah Vol 9, No 2 (2005): Tahun 2005
Publisher : Buletin Limbah

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PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAM FOSFAT DENGAN METODE OKSIDASI BIOKIMIA. Telah dilakukan percobaan pengolahan limbah ?gunk? yang mengandung solven organik dari pemurnian asam fosfat melalui proses oksidasi biokimia. Limbah berupa campuran solven organik Di 2(ethyl hexyl) phosphoric acid (D2EHPA) dan tri octyl phosphine oxide (TOPO) dalam larutan kerosen yang mengandung asam fosfat, dikenai oksidasi biokimia menggunakan bakteri untuk mengkonversi zat organik sehingga tersuspensi, terflokulasi dan terendapkan oleh gaya gravitasi. Limbah yang memiliki kadar awal COD/BOD 26000/1820 ppm dan TSS 1000 ppm dioksidasi biokimia pada suhu kamar dalam reaktor volume 18,6 liter dengan variabel operasi pH 6, 6,5; 7 dan 7,5. Limbah cair ini diproses dengan bio-oksidasi menggunakan bakteri jenis Super Growth Bacteria (SGB) 102 yang merupakan campuran spesies bakteri mutan pseudomonas sp., bacillus sp., arthrobacter sp., dan aeromonas sp. dengan penambahan aerasi dan nutrisi nitrogen dan fosfor. Setelah bakteri menyesuaikan kondisi, sampel larutan diambil 2 jam sekali untuk dianalisa kandungan COD, BOD, dan TSS. Hasilnya menunjukkan bahwa kandungan COD dan BOD mengalami penurunan, selama 22 jam berturut-turut pada pH 6, 6,5; 7 dan 7,5 nilai COD/BOD adalah 765/6; 31/2,48; 3/0,24; 12/0,96. Pengurangan COD/BOD optimum dicapai pada kondisi operasi pH 7, dengan nilai 3/0,24 TREATMENT OF ORGANIC SOLVENT WASTE ARISING FROM PHOSPHORIC ACID PURIFICATION PROCESS BY BIO-OXIDATION METHOD. The experiment of treatment of the gunk waste containing organic solvent waste arising from phosphoric acid purification process by bio-oxidation method was performed. The liquid waste containing organic solvent of di-2-ethyl-hexyl phosphoric acid (D2EHPA), tri-octyl phosphine oxide (TOPO) and phosphoric acid on the kerosene solution was treated by bio-oxidation method using aerobic microorganism for degrading the biodegradable organic component on the solution to be suspended, flocculated, and precipitated by gravitation. The liquid waste contain of COD/BOD 26000/1820 ppm and TSS 1000 ppm was treated by bio-oxidation process on the room temperature in the reactor of 18.6 liter volume with the operation variables are pH 6; 6.5; 7, and 7.5. The liquid waste was processed by bio-oxidation using bacteria of Super Growth Bacteria (SGB) 102 which consist of species mixture of bacteria i.e. bacillus sp., pseudomonas sp., aeromonas sp., and arthrobacter sp. by addition of aeration and nutrition of nitrogen and phosphorus. After the adaptation of bacteria on the solution, the sampling of solution was performed every two hours for analyzing of COD, BOD, and TSS contains. The results showed that the COD/BOD decreasing during period of operation 22 hours, on the pH 6, 6.5, 7, and 7.5 the value of COD/BOD are 75/6, 31/2.48; 3/0.24 and 12/0.96 respectively. The optimum value for decreasing of COD/BOD is achieved on pH 7 with the value of COD/BOD is 3/0.24.