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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 : Diponegoro University

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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.
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.
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 : Diponegoro University

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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 LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METODE OKSIDASIBIOKIMIA Salimin, Zainus
Buletin Limbah Vol 9, No 2 (2005): PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METOD
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.
PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METODE OKSIDASIBIOKIMIA Salimin, Zainus; Gunandjar, Gunandjar,; Purnomo, Sugeng; Wati, Wati
Buletin Limbah Vol 9, No 2 (2005): PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METOD
Publisher : Buletin Limbah

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Abstract

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.
PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METODE OKSIDASIBIOKIMIA Salimin, Zainus; Gunandjar, Gunandjar
Buletin Limbah Vol 9, No 2 (2005): PENGOLAHAN LIMBAH SOLVENT ORGANIK DARI PROSES PEMURNIAN ASAMFOSFAT DENGAN METOD
Publisher : Buletin Limbah

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Abstract

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.
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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Abstract

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.
FENOMENA BIOSORPSI KHROMIUM PADA EXTRACELLULAR POLYMERIC SUBSTANCE TERIMOBILISASI DALAM MATRIKS POLIMER EPOKSI Salimin, Zainus; Nuraeni, Endang
Buletin Limbah Vol 16, No 3 (2013): Nopember 2013
Publisher : Buletin Limbah

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FENOMENA BIOSORPSI KHROMIUM PADA EXTRACELLULAR POLYMERIC SUBSTANCE TERIMOBILISASI BALAM MATRIKS POLIMER EPOKSI. Extracellular Polymeric Substance (EPS) dihasilkan oleh sel bakteri yang berkomposisi polisakarida 40-95%, protein 1-60%, asam nukleat 1-10%, lipida 1-10%, dan sisanya polimer. EPS dapat mengikat kation dan anion pengotor air karena EPS mengandung gugus fungsional karboksilat, fosfat, sulfat, hidroksil, dan aminokarboksilat. Limbah cair yang mengandung logam khrom ditimbulkan dari kegiatan industri, dalam larutan kromium valensi 3 berbentuk kation (Cr 3+ ) dan kromium valensi 6 berbentuk anoin (Cr2O7 -2 ). Penelitian penggunaan EPS terimobilisasi pada matriks polimer epoksi untuk penyerapan chromium telah dilakukan. EPS telah diekstraksi dari lumpur aktif hasil pengolahan limbah industry, dan berdasarkan hasil analisisnya mengandung polisakarida 60%, protein 8%, dan asam nukleat 16%. Melalui analisis FTIR (Fourier Transform Infra Red) menunjukkan bahwa EPS hasil ekstraksi mengandung gugus fungsional karboksilat, hidroksil dan aminokarboksilat. EPS diimobilisasi dalam polimer epoksi pada rasio epoksi dan hardener 1:1, dan epoksi polimer dan EPS 5,7:1 menghasilkan butiran biosorben EPS-Epoksi 30-40 mesh atau 0,42-0,59 mm. Larutan khromium 15,9 ppm dialirkan melewati 1 bed kolom tinggi 5 cm yang berisi 2 g biosorben EPS-Epoksi. Variabel percobaan adalah pH larutan 5, 6 dan 7 dan laju alir 3, 5, dan 7 ml/menit. Hasil yang diperoleh menunjukkan bahwa pH 5 dan laju alir 5 ml/menit memberikan harga terbaik persen penyerapan kromium sebesar 89,2 % atau konsentrasi kromium tertinggal pada beningan sebesar 1,718 ppm. Kapasitas penyerapan kromium oleh biosorben EPS-Epoksi pada kondisi optimum adalah 6,382 mg Cr/g biosorben. Pada pH 5 terdapat pembentukan kutub muatan positif pada biosorben yang menarik anion kromium, sedangkan kation kromium masuk ke biosorben melalui mekanisme pertukaran ion. Laju alir 3 ml/menit memberikan periode kontak maksimum antara biosorben dan kromium. Fenomena biosorpsi khromium pada biosorben EPS-Epoksi sebagai fungsi pH diuraikan dalam makalah ini. PHENOMENA OF BIOSORPTION CHROMIUM ON EXTRACELLULAR POLYMERIC SUBSTANCE IMMOBILIZED IN A POLYMER EPOXY MATRIX. Extracelluler Polymeric Substance (EPS) is resulted by bacterial cells compossing the polysaccharides 40-95 %, protein 1- 60 %, nucleic acids 1-10 %, lipid 1-10%, and polymer as the remaining content. The EPS can bind the cations and anions water pollutants supporting by its functional group contents of carboxylates, phosphoric, sulfuric, hydroxil, and aminocarboxylates. Waste water containing chromium metal generated from industrial activities, 3 valency of chromium in solution form of the cation and 6 valency form of the anoin. The study of utilization of immobilized EPS on epoxy polymer for removing of chromium has been performed. The EPS was extracted from the activated sludge of industrial skin waste treatment, and according to its analysis the resulted EPS contains of polysaccharides 60 %, protein 8 % and nucleid acid 16 %. By Fourier Transform Infra Red Analysis Method (FTIR), it is indicated that the resulted EPS has the functional groups of carboxylates, hydroxyl, and aminocarboxylates. The EPS was immobilized with epoxy polimer on the ratio of epoxy and hardener of 1 : 1 and epoxy polymer and EPS 5,7 : 1, the resulted grain size of EPS Epoxy is about 30-40 mesh or 0,42 – 0,59 mm. The chromium solution of 15,9 ppm was channeled through the adsorbtion buret column of 5 cm bed height containing 2 g of biosoben EPS-Epoxy. The experiment variables are solution pH of 5,6 and 7 and flow rates of 3, 5, and 7 ml/min. On the condition of pH 5 and flow rate 3 ml/min gives the best percentage of chromium absorption 89,2%
Pengolahan Limbah Industri Elektroplating Dengan Proses Koagulasi Flokulasi Nurhasni, Nurhasni; Salimin, Zainus; Nurfitriyani, Ita
VALENSI Vol 3, No 1 (2013): Jurnal Kimia Valensi Volume 3//No.1//Mei 2013
Publisher : Program Studi Kimia, Fakultas Sains dan Teknologi, UIN Syarif Hidayatullah Jakarta

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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.
FENOMENA BIOSORPSI KHROMIUM PADA EXTRACELLULAR POLYMERIC SUBSTANCE TERIMOBILISASI DALAM MATRIKS POLIMER EPOKSI Salimin, Zainus; Nuraeni, Endang
Jurnal Teknologi Pengelolaan Limbah Vol 16, No 3 (2013): November 2013
Publisher : BATAN

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Abstract

FENOMENA BIOSORPSI KHROMIUM PADA EXTRACELLULAR POLYMERIC SUBSTANCE TERIMOBILISASI BALAM MATRIKS POLIMER EPOKSI. Extracellular Polymeric Substance (EPS) dihasilkan oleh sel bakteri yang berkomposisi polisakarida 40-95%, protein 1-60%, asam nukleat 1-10%, lipida 1-10%, dan sisanya polimer. EPS dapat mengikat kation dan anion pengotor air karena EPS mengandung gugus fungsional karboksilat, fosfat, sulfat, hidroksil, dan aminokarboksilat. Limbah cair yang mengandung logam khrom ditimbulkan dari kegiatan industri, dalam larutan kromium valensi 3 berbentuk kation (Cr 3+ ) dan kromium valensi 6 berbentuk anoin (Cr2O7 -2 ). Penelitian penggunaan EPS terimobilisasi pada matriks polimer epoksi untuk penyerapan chromium telah dilakukan. EPS telah diekstraksi dari lumpur aktif hasil pengolahan limbah industry, dan berdasarkan hasil analisisnya mengandung polisakarida 60%, protein 8%, dan asam nukleat 16%. Melalui analisis FTIR (Fourier Transform Infra Red) menunjukkan bahwa EPS hasil ekstraksi mengandung gugus fungsional karboksilat, hidroksil dan aminokarboksilat. EPS diimobilisasi dalam polimer epoksi pada rasio epoksi dan hardener 1:1, dan epoksi polimer dan EPS 5,7:1 menghasilkan butiran biosorben EPS-Epoksi 30-40 mesh atau 0,42-0,59 mm. Larutan khromium 15,9 ppm dialirkan melewati 1 bed kolom tinggi 5 cm yang berisi 2 g biosorben EPS-Epoksi. Variabel percobaan adalah pH larutan 5, 6 dan 7 dan laju alir 3, 5, dan 7 ml/menit. Hasil yang diperoleh menunjukkan bahwa pH 5 dan laju alir 5 ml/menit memberikan harga terbaik persen penyerapan kromium sebesar 89,2 % atau konsentrasi kromium tertinggal pada beningan sebesar 1,718 ppm. Kapasitas penyerapan kromium oleh biosorben EPS-Epoksi pada kondisi optimum adalah 6,382 mg Cr/g biosorben. Pada pH 5 terdapat pembentukan kutub muatan positif pada biosorben yang menarik anion kromium, sedangkan kation kromium masuk ke biosorben melalui mekanisme pertukaran ion. Laju alir 3 ml/menit memberikan periode kontak maksimum antara biosorben dan kromium. Fenomena biosorpsi khromium pada biosorben EPS-Epoksi sebagai fungsi pH diuraikan dalam makalah ini. PHENOMENA OF BIOSORPTION CHROMIUM ON EXTRACELLULAR POLYMERIC SUBSTANCE IMMOBILIZED IN A POLYMER EPOXY MATRIX. Extracelluler Polymeric Substance (EPS) is resulted by bacterial cells compossing the polysaccharides 40-95 %, protein 1- 60 %, nucleic acids 1-10 %, lipid 1-10%, and polymer as the remaining content. The EPS can bind the cations and anions water pollutants supporting by its functional group contents of carboxylates, phosphoric, sulfuric, hydroxil, and aminocarboxylates. Waste water containing chromium metal generated from industrial activities, 3 valency of chromium in solution form of the cation and 6 valency form of the anoin. The study of utilization of immobilized EPS on epoxy polymer for removing of chromium has been performed. The EPS was extracted from the activated sludge of industrial skin waste treatment, and according to its analysis the resulted EPS contains of polysaccharides 60 %, protein 8 % and nucleid acid 16 %. By Fourier Transform Infra Red Analysis Method (FTIR), it is indicated that the resulted EPS has the functional groups of carboxylates, hydroxyl, and aminocarboxylates. The EPS was immobilized with epoxy polimer on the ratio of epoxy and hardener of 1 : 1 and epoxy polymer and EPS 5,7 : 1, the resulted grain size of EPS Epoxy is about 30-40 mesh or 0,42 – 0,59 mm. The chromium solution of 15,9 ppm was channeled through the adsorbtion buret column of 5 cm bed height containing 2 g of biosoben EPS-Epoxy. The experiment variables are solution pH of 5,6 and 7 and flow rates of 3, 5, and 7 ml/min. On the condition of pH 5 and flow rate 3 ml/min gives the best percentage of chromium absorption 89,2% Zainus Salimin, Endang Nuraeni: Fenomena Biosorpsi Khromium pada Extracellular PolymericSubstance Terimobilisasi dalam Matriks Polimer Epoksi 132 or the chromium concentration on the water supernatant of 1,718 ppm. On the pH 5 there is formation of positif charge pole attracting the anion of chromium, the cation of chromium attaches into biosorben by ion exchange mechanism. The flow rate of 3 ml/min gives the maximum contact period between biosorben and chromium. The biosorption phenomena of chromium by EPS-Epoxy as the function of