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Sri Sumiyati
Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro
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PEMANFAATAN ECENG GONDOK (EICHHORNIA CRASSIPES (MART.) SOLMS.) DALAM PENYISIHAN LOGAM BERAT CHROM (CR) PADA LIMBAH ELEKTROPLATING Sumiyati, Sri; Hadiwidodo, Mochtar
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.034 KB) | DOI: 10.14710/teknik.v28i1.2076

Abstract

Effluent that is produce by the electroplating industry, especially nickel chrome plating, contains chromemetal that is carcinogenic. The toxicities from chrome are caused by its ability to dissolve and it’s mobilityin the environment. An alternative treatment to reduce chrome is called fitoremediasi which uses plants asits indicator; in this case we use water hyacinth.At the preface experiment, we tried to plant mature water hyacinth in electroplating waste. First we tried toplant in 100% waste water in witch we repeated it 3 times. At the 3rd week; day 18; the plants becameyellowish and became wilted. Knowing this fact, we applied the time for our experiment the we were goingto executed, with assuming at the 18th day the plants will become wilted as an indicator that the waterhyacinth are saturated in adsorbing chrome as the heavy metal pollutant. This became the parameter indesigning the time treatment for the plant zone, 4 until 15 days.The treatment was done by making variation in the amount of plants that are planted, which was 0 plants(as the control), 1 plant, 2 plants, 3 plants, and 4 plants; with 3 times repeating at each stage. The result ofthis experiment after 18 days shows the chrome concentration and the efficiently in decreasing theconcentration on each stage. The highest efficiently for each plant was the treatment by 1 plant only. Thehighest efficiently in decreasing the concentration was 78,95% ad it was done by the treatment with 4plants. To get chrom concentration which is fill with the standard, we can add more water hyacinth into thewaste with the balance equivalent or we need the lower beginning concentration.
PENGOLAHAN AIR LIMBAH KEGIATAN PENAMBANGAN BATUBARA MENGGUNAKAN BIOKOAGULAN : STUDI PENURUNAN KADAR TSS, TOTAL Fe DAN TOTAL Mn MENGGUNAKAN BIJI KELOR (Moringa oleifera) Samudro, Ganjar; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 7, No 2 (2010): Vol 7, No 2 (2010)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.101 KB) | DOI: 10.14710/presipitasi.v7i2.57-61

Abstract

Salah  satu  alternatif  pengolahan  air  limbah  kegiatan  penambangan  batubara  adalah  dengan menggunakan biji kelor (Moringa oleifera) sebagai biokoagulan. Protein dan logam alkali kuat yang terkandung dalam biji  kelor (Moringa oleifera) dapat bersifat sebagai poliektrolit dan kutub positif yang dapat mengikat koloid dalam air buangan. Penelitian ini dilakukan untuk menentukan dosis optimum dan efektifitas biji kelor dalam menurunkan TSS, total Fe dan total Mn pada kondisi aktual terhadap perbedaan  karakteristik  air  limbah kegiatan penambangan  batubara  dengan  menggunakan jartest. Hasil penelitian menunjukkan dari tiga sumber air limbah yang berbeda (sampel A, sampel B dan sampel C), terjadi penurunan TSS sebesar  99,93%, total Fe 99,71%  dan total Mn 10,84% dengan dosis optimum 1,50 gr/L untuk sampel A, kemudian penurunan TSS sebesar 91,52%, total Fe 85,47% dan total Mn 0,53% dengan dosis optimum 0,50 gr/L untuk sampel B dan penurunan TSS sebesar  99,29%, total Fe 99,43% dan total Mn 50,54% dengan dosis optimum 1,25 gr/L untuk sampel C. Perbedaan karakterisik sumber air limbah dan sifat polutan yang terkandung  akan  mempengaruhi kinerja biji kelor (Moringa oleifera)
ANALISIS KINERJA PENGOLAHAN AIR LIMBAH PAVILYUN KARTIKA RSPAD GATOT SOEBROTO JAKARTA Sumiyati, Sri; Imaniar, Imaniar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 2, No 1 (2007): Vol 2, No 1 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.5 KB) | DOI: 10.14710/presipitasi.v2i1.39-42

Abstract

Hospitals  produce  solid  waste  and  also  wastewater,  hazardous  and  non-hazardous.  Pavilyun Kartika as a part of RSPAD Gatot Soebroto, produces wastewater that has characteristic like a domestic wastewater. The hazardous waste that produced by Pavilyun Kartika were managed by RSPAD Gatot Soebroto. In Pavilyun Kartika, wastewater with flows 52 m3/days comes from bathrooms  for  patients, laundry,  public  bathrooms,  and  also  kitchen.  Wastewater  of  Pavilyun Kartika contains high BOD, COD, and also Ammoniac, though still in save numbers, because still  under  the  standard  regulation  for wastewater  in  Jakarta.  Wastewater  treatment  plant  in Pavilyun Kartika use extended aeration method, as part of  biological treatment. The principal of the treatment are aeration, sedimentation, and chlorination.
PENGOLAHAN LIMBAH CAIR DAN LIMBAH BETALAKTAM PT. PHAPROS, TBK, SEMARANG Sumiyati, Sri; Prabarani, Fitri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 5, No 2 (2008): Vol 5, No 2 (2008)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2151.457 KB) | DOI: 10.14710/presipitasi.v5i2.22-30

Abstract

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PENERAPAN RECYCLE, REUSE DAN RECOVERY (3R) LIMBAH BAHAN BERBAHAYA DAN BERACUN SECARA OFF-SITE PT. PENGELOLA LIMBAH INDUSTRI BATAM (PLIB), JAKARTA Sumiyati, Sri; Iriany, Milda Restuti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 4, No 1 (2008): Vol 4, No 1 (2008)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.759 KB) | DOI: 10.14710/presipitasi.v4i1.48-55

Abstract

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PENGARUH KEPADATAN KENDARAAN BERMOTOR DAN ANGIN TERHADAP KONSENTRASI TIMBAL (Pb) PADA DAUN ANGSANA (Pterocarpus indicus) DAN MAHONI (Swietenia macrophylia) DI MUSIM KEMARAU Huboyo, Haryono Setiyo; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 6, No 1 (2009): Vol 6, No 1 (2009)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1001.551 KB) | DOI: 10.14710/presipitasi.v6i1.1-5

Abstract

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PENENTUAN FORMULA PENAMBAHAN VOLUME AIR KONSTAN PADA PENGOMPOSAN SAMPAH DAUN Samudro, Ganjar; Sumiyati, Sri; Ratna, Dian Asri Puspa; Hastuti, Sindi Martina; Kurnia, Vaneza Citra; Hadiwidodo, Mochtar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 14, No 1 (2017): Maret 2017
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.538 KB) | DOI: 10.14710/presipitasi.v14i1.41-44

Abstract

Penambahan volume air pada pengomposan sampah daun masih dilakukan secara manual, membutuhkan waktu yang banyak, dan tenaga kerja yang besar. Tujuan penentuan ini dimaksudkan untuk mendapatkan formula penambahan volume air konstan pada pengomposan sampah daun secara kontinyu. Metode penelitian diawali dengan observasi penelitian hubungan waktu terhadap kadar air berdasarkan variasi kadar air yang diinginkan 50% dan 60% sebagai kadar air optimum dalam proses pengomposan, kemudian dilanjutkan analisis kuantitatif deskriptif dalam penentuan formula. Formula penambahan volume air konstan pengomposan sampah daun sebagai berikut: debit input (mL/L/hari): y = 1,764e0,048x, volume air (mL/L): y = 10,01e0,049x, dan volume air (%):y = -0,698x + 61,09.
PENGARUH WAKTU STABILISASI PADA SEQUENCING BATCH REACTOR AEROB TERHADAP PENURUNAN KARBON Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 1, No 1 (2006): Vol 1, No 1 (2006)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (67.755 KB) | DOI: 10.14710/presipitasi.v1i1.13-18

Abstract

One  of  biological  wastewater  treatment  process    modification  Sequencing  Batch  Reactor by exploiting  period  of  stabilization  time  earn  to  lessen  capacities  of  total  aeration volume. Mechanism  that  happened  in  this  SBR  modification  same  as  that  happened  in Contact Stabilization.  There  was  existence  process  biosorption,  was  due  to  adsorption  of  the organic matter  onto  sludge  particels,  during  the  contact  period  (fill  -  react  time).This  research aim  to know  influence  of  stabilization  time  to  degradation  of  COD.  This  research,  used  SBR reactor with volume operate for 5 Liter with COD influent consentration 1139.2 mg/L. The variation of stabilization  time  :  3,  4,  5  and  6  hours  and  time  reacted  :  0,5  ;  1  ;  1,5  and  2  hours as independent  variables.  COD  effluent  concentration  as  depended  variable.Result  of research indicate that progressively time of stabilization and concentration COD (mg/L) will experience of efficiency  improvement.  Time  reacted  to  give  influence  the  happening  of  biosorption (the adsorption of organic matter onto sludge particel). The fenomena that happened is degradation of concentration COD will achieve maximum level at the total contact time 1,5 hour. Efficiency of optimum degradation COD become of variation  r/s = 1 : 6.
PREDIKSI CURAH HUJAN KOTA SEMARANG DENGAN FEEDFORWARD NEURAL NETWORK MENGGUNAKAN ALGORITMA QUASI NEWTON BFGS DAN LEVENBERG-MARQUARDT Warsito, Budi; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.768 KB) | DOI: 10.14710/presipitasi.v3i2.46-52

Abstract

This paper study the rainfall prediction at Semarang City as time series data with Feed Forward Neural Network  (FFNN)  model.  The  learning  algorithm  that  be  used  are  the  Quasi  Newton BFGS and Levenberg-Marquardt algorithm. The input unit is determined based on the best of ARIMA model. The computation is done with use  Matlab 7.1 program with 1000 epoch, five unit of hidden layer, 100 replication  and use  input at lag  variabel  1,  12  and 13, respectively. The result shows that the prediction is good in relatively, where Quasi Newton BFGS algorithm result the Mean Square Error (MSE) that more accurate.
PEMANFAATAN HYDRILLA (Hydrilla verticillata) UNTUK MENURUNKAN LOGAM TEMBAGA (Cu) DALAM LIMBAH ELEKTROPLATING STUDI KASUS: INDUSTRI KERAJINAN PERAK KELURAHAN CITRAN, KOTAGEDE Sumiyati, Sri; Handayani, Dwi Siwi; Hartanto, Widya
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 6, No 2 (2009): Vol 6, No 2 (2009)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.915 KB) | DOI: 10.14710/presipitasi.v6i2.23-26

Abstract

Silver handicraft industries released waste water which contained copper (Cu) with concentration of 4,628mg/l. Such concentration had exceeded the standard quality oh KepMenLH No 51 Year 1995. Waste water treatment to reduce Cu concentration was conducted by using hydrilla (Hydrilla verticillata). This experiment had a purpose to find out the efficiency of hydrilla weight and the optimum retention time to reducde Cu concentration. Experiment was conducted in batch system with 150 gr, 200 gr, and 250 gr hydrilla weight variances and 30 days retention time. Experiment design used was Completely Random Design (CRD) repeated twice. Waste water sample was 5 L for each topless with the total of 7 topless. Cu concentration analysis was performed on laboratory by examining some parts of the hydrilla sample once in 3 days, and the waste water was examined for the Cu concentration on the 30th day. The operation result showed the average of Cu concentration reduction at the control topless without any treatment was 3,782 mg/l, the average of the 250 gr hydrilla weight treatment was 0,862 mg/l. The averages of Cu reduction efficiency for each weight were : 150 gr = 54,49%; 200 gr = 70,43%; 250 gr = 81,37%. The optimum retention time is at the 15th day with 0,027 mg/l of Cu concentration reduction.  These results showed that the most efficient treatment was the hydrilla with the weight variance of 250 gr with 15 days retention time
Co-Authors Adranandini Noor Anisa Aeni, Qurotul Aini Indriasih Aini Indriasih Ajat Sudrajat1 Aldela, Eriza Salsa Amri, Salim Isfayama Anam, Muhammad Syaiful Andam S. Ardan Andhika, Bagas Dwi Anik Sarminingsih, Anik Annisa Anwar, Norrisal Fuade Ardanariswari Ardanariswari Ardhianto Gutomo Wisnupradhono Arifani Bestari Arumdani, Indah Sekar Ary Purwantiningsih Arya Rezagama Aufa Rahma Al-Hafidz Aulia, Mulyani Safitri Axelino Farrell Andika Badrus Zaman Bagas Dwi Andhika Bambang Sutejo, Bambang Bimastyaji S. Ramadan Bimastyaji Surya Ramadhan Brian Angga Kusuma Budi Prasetyo Samadikun Budi Warsito Budi Warsito Budiharjo, M Arief Budiyono Budiyono Chrisna Suhendi Destiasari, Ajeng Dewangga, Ria Saputra Di Asih I Maruddani Dian Asri Puspa Ratna Dian Asri Puspa Ratna Dian Asri Puspa Ratna, Dian Asri Puspa Dwi Siwi Handayani Edi Prayitno, Edi Eka Pratiwi Eka Pratiwi Eka Septiana Sobriani Endang Purbowati Endro Sutrisno Firdausy, Asteria Marsha Fitra Jaya Fitri Indriani Fitri Prabarani, Fitri Flora Resti Utami Ganjar Samudro Ganjar Samudro Ganjar Samudro Ghifar Rahman Haekal Awliya Muhammad Salman Hanif Kusumasasmita Hariyono, Mohamad Haryono Setiyo Huboyo Haryono Setiyo Huboyo Hassanuddin B, M. Sultan Hendri Setyawan Hizkia Christian Putra Setiadi ILHAM Imani, Shabrina Putri Imaniar Imaniar Imaning Tyas Fitri Imbar Agusetyadevy Immy Suci Rohyani Irawan Wisnu Wardana Irfan Alfarisi Irzan Tahar Ismartoyo Ismartoyo Iwan Jahruddin Jahruddin Jayawarsa, A.A. Ketut Junaidi Junaidi Larasati, Dyanung Lintang Iradati Lion, Thomas Lisa Dwi Ningtyas M. Sultan Hassanuddin B Mala Nurilmala Maria Yustina Rensi Dartani, Maria Yustina Rensi MARIYATI Maya Widyana Dewi Milda Restuti Iriany, Milda Restuti Mochamad Arief Budihardjo Mochtar Hadiwidodo Muflikah, Bnti Muhammad Agung Wibowo Muhammad Rasidi Muliyadi Muliyadi Muliyadi Muliyadi Mulyani Safitri Aulia Mussadun Mussadun Mustika Balqis Ningsih, Suhesti Nubatonis, Richnal Nugroho, Agung Nur Ilman Ilyas Nurandani Hardyanti Nurmawati Nurmawati Ojat Darojat Ojat Darojat Pitaloka, Eva Diana Pramesti, Ajeng Lakshita Prasasty, Ghina Azlia Purwantiningsih, Ary Purwanto Purwanto Purwanto Purwanto Putra, Sayyida Rafi Hernanda Putri, Sasi Fhatmayani R Rizal Isnanto Rahmasari, Synthia Nur Ramada Haqqo Mujtahida Ramadan, Bimastyaji Surya Ramadhan, Bima Setyadi Ramadhan, Hafidz Ismu Rasidi, Muhammad Ratna Kustanti Ratna Purwaningsih Renaldi Purba Renasmawan Peratama Reny Nurainy Risky Setiawan Rizal Adi Wirawan Saptian, Fiega Adhi Sardjiyo Sasi Fhatmayani Putri Silviana Sindi Martina Hastuti Sindi Martina Hastuti Sindi Martina Hastuti, Sindi Martina Sudarno Sudarno Sudarno Sudarno Sudarno Sudarno utomo Sugito Sugito Suharno, Yusak Sumaji Suparti Suparti Sutrisno Endro Syaeful Mikdar Syafrudin Syafrudin Syafrudin Syafrudin Synthia Nur Rahmasari Tarno Tarno Tegar Chalis Bani Titik Istirokhatun Vaneza Citra Kurnia Vaneza Citra Kurnia Vaneza Citra Kurnia, Vaneza Citra Wandika Wenas, Hylcia Alexandra Kimberly Widya Hartanto Winardi Dwi Nugraha Winardi Dwi Nugraha Wulanda Amelia Yuli Haryati Yusnaeni Yusnaeni, Yusnaeni Zayanah, Nurul Fadhilah Zeferino Soares Lopes