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Indriyati Indriyati
SMA Negeri 5 Surakarta, Indonesia
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UNJUK KERJA REAKTOR ANAEROB LEKAT DIAM TERENDAM DENGAN MEDIA PENYANGGA POTONGAN BAMBU Indriyati, Indriyati
Jurnal Teknologi Lingkungan Vol. 8 No. 3 (2007): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.047 KB) | DOI: 10.29122/jtl.v8i3.428

Abstract

Fixed Bed Anaerobic reactor that use support material from bamboo ings can be used as waste water biological treatment without oxygen inside reactor. On the experiment that use soybean sauce waste waterwith high organic content.According to the experiment, the optimum performance result was 3.5 days withloading rate 0.71 kg COD/m3.day and bamboo rengs can be used as supportmaterial.
PENGOLAHAN LIMBAH CAIR INDUSTRI MINUMAN RINGAN Indriyati, Indriyati; Susanto, Joko Prayitno
Jurnal Teknologi Lingkungan Vol. 10 No. 1 (2009)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (137.54 KB) | DOI: 10.29122/jtl.v10i1.1507

Abstract

The concentration of soft drink contains organic waste water not so high. There foreone of the alternative of processing technology is used aerobic system: Oxydationditch. On this observation can be seen that the system is able to degrade theorganic matter by observe the operation parameters process to operate the systemand the parameters are BOD, COD, TSS, Oil & grease, TDS, Total N and pH. Allparameters show stability process during 3 (three) months operation. Base on thecriteria as mentioned above, the efficiency that can be reached by this system arearound 96,875 % for BOD efficiency, COD 96 % for COD efficiency , TSS 80 %, Oil& grease 75 %, Total N 76,92 % and pH 41 %.
DEGRADASI BAHAN ORGANIK LIMBAH CAIR INDUSTRI PERMEN DENGAN VARIASI WAKTU TINGGAL Indriyati, Indriyati
Jurnal Teknologi Lingkungan Vol. 3 No. 1 (2002): JURNAL TEKNIK LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.036 KB) | DOI: 10.29122/jtl.v3i1.228

Abstract

Limbah cair yang dihasilkan PT. Van Melle Indonesia (PTVMI), mengundangbahan organik tinggi dengan konsentrasi COD berkisar antara 10.000 – 30.000 mg/L. kandungan bahan organik yang tinggi dapat menimbulkan gangguan bagi perairan, sehingga perlu didegradasi salah satu alternatif teknologi pengolahan limbah yaitu menggunakan reaktor anaerobik lekat diatas terendam. Jenis reaktor ini adalah bioreaktor yang dilengkapi dengan bahan penyangga sebagai tempat massa mikroorganisme tumbuh dan berkembang biak.Penelitian ini dilakukan untuk melihat degradasi bahan organik limbah cair industri permen dengan variasi waktu tinggal 18, 14, 12 dan 10 hari yang dioperasikan secara kontinyu. Hasil degradasi bahan organik dengan variasi waktu tinggal terbaik di dapat pada waktu tinggal 12 hari dengan degradasi bahan organik terlarut sebesar 98,07%, pH efluen 6,90, produksi harian biogas 5 L/hari, produksi gas metan 3,25 L/hari dan kandungan gas metan 65%. Plastik yang digunakan sebagai media cukup efektif sebagai tempat menempelnya bakteri dengan porositas 87,30% dan luas permukaan efektif sebesar 514,40 M2/M3.
PROSES PEMBENIHAN (SEEDING) DAN AKLIMATISASI PADA REAKTOR TIPE FIXED BED Indriyati, Indriyati
Jurnal Teknologi Lingkungan Vol. 4 No. 2 (2003): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.356 KB) | DOI: 10.29122/jtl.v4i2.279

Abstract

Proses pembenihan (seeding) dan aklimatisasi menggunakan reactor lekatdiam terendam menggunakan media cincin keramik yang menggunakansubstrat limbah cair pabrik permen, memperlihatkan aktivitas bekteri semakinstabil pada hari ke 91 sampai hari ke 99. hal tersebut dapat dilihat daripenyisihan COD sebesar 82 – 86 % konsentrasi gas metan berkisar antara 62 –69 %, rentang pH 6,8 – 7,23 dan bakteri sudah melekat.
PENGOLAHAN LIMBAH CAIR INDUSTRI MINUMAN Indriyati, Indriyati
Jurnal Teknologi Lingkungan Vol. 9 No. 1 (2008): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (40.31 KB) | DOI: 10.29122/jtl.v9i1.440

Abstract

The organic concentration of soft drink factory waste water has not high organic concentration, therefore one of the alternatives of the treatment technology is using aerobic system : activated sludge. On this observation can be seen that the system can be used as waste water treatment for soft drink that is not so high in COD contain and the criteria parameters design can be fulfilled by process parameters during operation the system. The parameters that are not fulfill the design parameters is caused by the shock loading of toxic material or by the high loading rate of substrate of waste water. Based on parameter criteria as mention above, the efficiency that can be reached of this process is about 61,22%.
PENGOLAHAN EFLUEN REAKTOR FIXED BED SECARA KOAGULASI Indriyati, Indriyati; Diyono, Diyono
Jurnal Teknologi Lingkungan Vol. 12 No. 3 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.094 KB) | DOI: 10.29122/jtl.v12i3.1236

Abstract

effluent dari reaktor fixed bed pengolahan limbah cair pembuatantahu masih mengandung organik tinggi dan memiliki banyak padatan tesusensi , sehingga warnaair limbah tidak cukup jernih , dan sulit diturunkan secara anaerob. Tujuan percobaan dari proses ini dalah untuk menghasilkan air limbah untuk embuatan tahu menjadi lebihjernih. berdasarkan alasan diatas, maka dilakukan pengolahan limbah cair dengan menggunakan proses koagolasi menggunakan Alumunium sulfat dan Ca (OH)2 yang ditambahkan ke efluen reaktor fixed bed dengan variasi dosis sulfat Alumunium : mulai dari 0,5; 1,0 ; 1,5; 2,5; 5,0; 7,5 gramdan batuan Ca (OH)2. Akan meningkatkan alkanitas, sampai PH 8.0. Hasil percobaan menunjukan bahwa, percobaan yang menggunakan koagulan Almunium sulfat secukupnya dan penambahan Ca(OH)2 untuk menstabilkan pH, sehingga diperoleh kualitas hasil pengolahan yang baik, dan sesuai dengan perfomance efluen reactor fixed bed yang jernih. Selain itu, aplikasi Ca(OH)2 dapat membantu meningkatkan konerja koagulan yang dapat dilihat dari ukuran flok sedimentasi dari effluen anaerob
PEMBENIHAN DAN AKLIMATISASI PADA SISTEM ANAEROBIK indriyati, Indriyati
Jurnal Rekayasa Lingkungan Vol 6, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (116.031 KB)

Abstract

Seeding in Fixed Bed anaerobic reactor are infl uenced by several condition such as the growth rate total population of microbial, bacterial adaption to infl uent and the retention of biomass in reactor. The aim of this observation is to fi nd out the seeding and acclimation process in anaerobic process by using plastic as support material. Seeding and acclimatization process run smoothly can be seen from the increasing of infl uent or substrate and following by the increasing degradation of soluble COD, beside that the decreasing of VSS concentration indicates that microorganism are all ready fi x in support material, therefore reactor can be operated continuously and the acclimatization process can be stopped.Keywords : anaerobic seeding, acclimation anaerobic process
PROSES PENGOLAHAN LIMBAH ORGANIK SECARA KOAGULASI DAN FLOKULASI indriyati, Indriyati
Jurnal Rekayasa Lingkungan Vol 4, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (170.481 KB)

Abstract

Soya bean sauce waste water is an high organic wastewater and has dark colour, therefore it is diffi cult to degrade it biologically. Base on as mentioned above, it is tried to process it with coagulation and fl okulation use Alumunium sulphate and PAC which is added to wastewater with several dosis variation of Alumunium sulphate: 100, 200, 300. 250, and PAC with dosis 50, 100, 150, 200 ppm. Experiment result shows the experiment which use a match Alumunium sulphate and PAC as coagulant could give a good quality of processing and suitable with the treshhold of wastewater. The application of fl okulan Aquaklir 240 could help the performance of coagulan that can be seen from the fl oc size form.Key words : fl occulation, coagulation.
POTENSI LIMBAH INDUSTRI KELAPA SAWIT DI INDONESIA indriyati, Indriyati
Jurnal Rekayasa Lingkungan Vol 4, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.096 KB)

Abstract

The status of indonesian palm oil industry in the world to be the fi rst one that built a modern palm oil industry. There is a trend of palm oil industry in the future time to be the dominan industry. On 2005 was increse to be 5.597.158 ha with CPO production about 12.451.000 ton which is spread in 20 provinces. The increasing of palm oil production give impact to solid and liquid waste potential. All the waste can be used as energy alternatif, beside that the potency of solid and liquid waste will give contribution to CO2 emission of global warming.Key words : palm oil.
The Application of E-Module Based on Problem-Based Learning to Improve Critical Thinking Ability and Reduce Misconception on Ecology Material in the Students of X MIPA 1 SMA Negeri 5 Surakarta in the School Year Of 2014/2015 Diana, Nina; Karyanto, Puguh; Sudarisman, Suciati; Indriyati, Indriyati
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 12, No 1 (2015): Prosiding Seminar Nasional XII Biologi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aimed to improve critical thinking ability and reduce misconception on ecology material in the students of X MIPA 1 of SMA Negeri 5 Surakarta in the school year of 2014/2015 through the application of e-module based on Problem-Based Learning. This study was a Classroom Action Research conducted in two cycles, each of which consisting of four stages: planning, acting, observing, and reflecting. The subject of research was the students in X MIPA 1 of SMA Negeri 5 Surakarta in the school year of 2014/2015 consisting of 30 students. Techniques of collecting data used were essay test to measured critical thinking skill, open ended reasoning of two-tier diagnostic test to measure misconception, observation and interview as the data proponents. Data validation was conducted using triangulation methode. The data were analyzed using descriptive qualitative technique consists of three components: data reduction, data presentation, and taking the conclusion. Target of the research is an increase of 20% on critical thinking aspects and reduce misconception 20% on ecology concepts at the end of the cycle. The result of research showed that there were an increase in critical thinking ability and a decrease in misconception. The improvement of critical thinking ability included six aspects: interpretation of 20.83%, analysis of 20.42%, evaluation of 40.00%, conclusion of 39.17%, explanation 32.50%, and self regulation of 25.83%. The decreased misconception included four important concepts in ecology: population of 34.45%, community of 43.06%, food chain and web of 34.07%, and science, environment, technology and community (salingtemas) ecology of 28.15%. Considering the result of research, it could be concluded that the application of e-module based on Problem-Based Learning could improve critical thinking ability and reduce the students’ misconception in ecology material.Keywords: e-module based on Problem Based Learning, critical thinking, misconception.
Co-Authors Affiat, Muhammad Riza agus Nugroho Anik Suwarni Atik Aryani Azmi, Lut Dika Daru Bara, Adventina Pranata Basukiyatno, Basukiyatno Boleng Kelen, Veronika Bria, Agnes Theresia Prahara Bria, Lelianita Angriani BupuDaa, Brigita Veridiana Chandra Wijaya Cordanis Ferreira, Alexandra Daiman, Marselina Hadija Devi Marlita Devi Marlita, Devi Diyono, Diyono Eko Adi Sarwoko Eriyanti, Etty ethelbert, yohanes Ethelbert, Yohanes K. Ethelbert, Yohannes K. Ethelbert, Yohannes Kornelius Euis Saribanon, Euis Fahik, Meksiani Nope Aliansa Fajar Alam Putra, Fajar Alam Fiqri, Fiqri Yuan Akbar Prasetyo Fitriyadi, Farid Frans Nyong Gunawan, Hafid Handayani, Sri Henny Angri Manafe Herawati, Vitri Dyah Heri Rustamaji Ida Wahyu Yunitaningrum Iman Firmansyah Jago, Vinsensius Jehani, Gregorian Patinai De Jerubu, Onesmius Valentino Johanes Kurniawan Liauw Joko Prayitno Susanto Kaha, Hendrikus Likusina Kaha, Hendrikus Lukusina Kelen, Veronika Boleng Khasanah, Arum Uswatun Kiik, Siprianus Kleden , Marianus Kodo, Yohanes Kornelius Ethelbert, Yohanes Kota, Reinald Juanli Lam, Juventur Jimi Lamawuran, Yosef Lamawuran, Yosep Dionisius Lawalata, Patricia Yuniarti Lawalu, Stephanie Perdana Ayu Lesmini, ⁠Lis Livana Ph, Livana Mafrudoh, Lut Maharani, Algonsia Dwinda Margiati Margiati, Margiati Marianus Kleden Moch. Muslich Mustadjab Molan , Kristianus Molan, Kristianus Molan, Kristianus Simon H. Mufidah, Ni’mah MUHAMMAD TAUFIK Ndoang, Fransiska Arlin Ngguwa, Maria Matildis Bei Nina Diana, Nina Nina Mariana, Nina Nurhayadi Nurlaila Nurlaila Oliviera Mambo, Sisilia Pally, Keren Y Peten, Yasinta Palan Peten, Yasinta Yunirianto Palan Petty, Yanuarius Rendy Pining, Beatriks Tri Putri Pratama, Louris Sam Pratama, Redo Nopris Priyo Sidik Sasongko PUGUH KARYANTO Ringa Reo, Anjelyn Norlintya Rosbianti, Rosbianti Rosita, Erva Rudhy Pramono Sarinah Sarinah Simon H. Molan, Kristianus Sius, Karolus Sius, Karolus Tatu Soekirman, Atong Su, Delfridus Hendriko Suciati Sudarisman Sumarni, Ranti Ningsih Suriswo Sutra, Fajar Alam Sutrisno, Sutrisno Teguh Sarry Hartono, Teguh Sarry Tri Mulyani Uge, Theresia Blandina Vitri Dyah Herawati Wardaningtyas, Aprilia Fifi Wea, Claudia Elda Wea, Yosua Domosan Mere Welin, Elisabeth Date Masan Wibowo, Heriyanto Widiantari, Aninda Dinar Widiyono, Widiyono Wijaya, Surya Oto Wynd Rizaldy Yohanes Kornelius Ethelbert Yosafat, Andre Yosef Dionisius Lamawuran Yosef Pandai Lolan Yulia Susanti, Yulia