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Penjerapan Ion Logam Cadmium dalam Larutan Encer Menggunakan Baggase Fly Ash Teraktivasi Martha Helsanggi; Agus Prasetya
Jurnal Rekayasa Proses Vol 4, No 1 (2010)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.852 KB) | DOI: 10.22146/jrekpros.569

Abstract

Bagasse fly ash (BFA) dapat digunakan sebagai adsorben berbagai macam logam berat seperti Cd2+ yang terlarut dalam air. Untuk dapat digunakan sebagai media penjerap BFA perlu lebih dahulu diaktivasi. Penelitian mempelajari pengaruh berbagai jenis aktivasi terhadap kemampuan adsorpsi BFA belum banyak dilakukan. Pada penelitian ini BFA diaktivasi menggunakan larutan HCl 1N dan H2O2 pada berbagai konsentrasi 0,01N, 0,02N, dan 0,05N. BFA teraktivasi kemudian digunakan untuk menjerap Cd2+. Pada penelitian ini juga dipelajari pengaruh suhu terhadap jumlah Cd2+ yang teradsorpsi. Hasil penelitian menunjukkan bahwa kualitas BFA teraktivasi H2O2 lebih baik dibandingkan BFA awal. Sementara itu, aktivasi dengan larutan HCl menyebabkan penurunan kualitas penjerapan. Hasil penelitian menunjukkan bahwa semakin tinggi suhu maka semakin sedikit Cd2+ yang terjerap. Kata kunci: bagasse fly ash, penjerapan, aktivasi, H2O2, ion kadmium Bagasse fly ash is frequently used as an adsorbent for various heavy metals such as Cd2+ dissolved in water. Activation procedure is generally required preceding adsorption using BFA. Investigation of different activation treatments and the influences on BFA adsorption capacity is still scarce. In the present study, BFA was activated in HCl 1 N solution and in H2O2 solution at different concentrations of 0.01 N, 0.02 N and 0.05 N. The activated BFA was then used for adsorption of water containing Cd2+. Also, the effect of temperature on the adsorption was part of the study. Experimental results indicated that H2O2 activated BFA showed superior adsorption properties compared with the unmodified BFA (raw BFA). Meanwhile, activation treatment in HCl solution caused a decrease in adsorption quality. The results also showed that temperature increase would lead to a decrease in adsorption capacity. Keywords: bagasse fly ash, adsorption, activation, H2O2, ionic cadmium
Pengurangan Zat Warna Remazol Red Rb Menggunakan Metode Elektrokoagulasi Secara Batch Novie Putri Setianingrum; Agus Prasetya; Sarto Sarto
Jurnal Rekayasa Proses Vol 11, No 2 (2017)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.232 KB) | DOI: 10.22146/jrekpros.26900

Abstract

Batik is one of the distinctive cultural chacteristic of the Indonesian national that has gained recognition from UNESCO. Batik industries have grown rapidly. However, the activity  industry produces liquid, especially from batik’s dyeing processes.. The conventional method which is used for processing wastewater still has limitation so that an innovation method wastewater treatment is need for example electrocoagulation. Electrocoagulation is  a process of coagulation using unidirectional electrics current through electro-chemical process. In this work, electrocoagulation was employed to treat wastewater (synthetic dyes remazol red (Rb) as wastewater model). The method was carried out by varying the distance between electrode distance and electrical voltage. Variation of distance between electrode range were  2 cm and 3 cm while variation of electrical voltage range were 10 volt and 15 volt. To determine the effect of electrode distance and electrical voltage on treatsment performances the chemical oxygen demand(COD), total suspended solid (TSS) and waste color. The samples were taken at 10 minutes, 20 minutes, 40 minutes and 60 minutes during the process. The results showed that the distance of the electrode and the voltage affected  to thr reduction of COD, TSS and waste color. The optimum elecrode distance and voltage in this research were 2 cm and 10 volt. The research showed the decrease in COD concentration from 428 mg/L to 54 mg/L, TSS concentration from 850 mg/L to 277 mg/L and the decrease in waste color from 2733 PtCo to 75,5 PtCo. ABSTRAKBatik merupakan salah satu ciri budaya khas bangsa Indonesia yang telah mendapatkan pengakuan dari UNESCO. Industri batik mengalami pertumbuhan cukup pesat. Aktivitas produksi dalam industri semakin meningkat menyebabkan limbah cair terutama dari proses pewarnaan semakin banyak. Metode konvensional untuk pengolahan limbah cair masih memiliki kekurangan sehingga memerluka metode pengolahan limbah alternatif, yaitu metode elektrokoagulasi. Proses elektrokoagulasi merupakan suatu proses koagulasi  dengan menggunakan arus listrik searah melalui proses elektrokimia. Proses elektrokoagulasi dilakukan dengan memvariasikan tegangan listrik dan jarak antar elektroda yaitu 10 volt dan 15 volt serta 2 cm dan 3 cm. Untuk mengetahui pengaruh tegangan listrik dan jarak antar elektroda maka dilakukan pengukuran COD, TSS dan Warna dimana sampel diambil setiap 10 menit, 20 menit, 40 menit dan 60 menit lalu dianalisis. Hasil penelitian menunjukkan bahwa tegangan listrik dan jarak antar elektroda memberikan pengaruh terhadap penurunan COD, TSS dan Warna pada limbah cair sintetis Remazol Red RB. Jarak antar elektroda dan tegangan listrik yang optimum pada penelitian ini yaitu 2 cm dan 10 volt dengan penurunan konsentrasi COD yang pada awalnya 428 mg/L menjadi 54 mg/L, penurunan TSS yang pada awalnya 850 mg/L menjadi 277 mg/L dan penurunan Warna yang pada awalnya sebesar 2733 PtCo menjadi 75,5 PtCo.
Investigation of Locally Made Ceramic Filter for Household Water Treatment Awaluddin Nurmiyanto; Agus Prasetya
Jurnal Sains & Teknologi Lingkungan Vol. 4 No. 2 (2012): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol4.iss2.art3

Abstract

This research have objective to develop and evaluate the performance of ceramic filter in using locally available material at Yogyakarta. Ceramic filter are made by pressing a mixture of clay, discarded pottery (grog) and combustible material (coconut fiber) into the molder. Curving processes are then applied to form tubular shape before firing it using kiln (1005°C). Filtration test were performed gravitationally by flowing well water into ceramic filter. Filtered water quality was complying with Indonesia drinking water quality standard (E.Coli and turbidity) although it has low filtration rate (0,461 L/Hr). The most optimum ceramic filter in turbidity and bacterial removal was composition number 10 {clay+coconut fiber 4,5%(w/w)+grog 5%(w/w)} that have average turbidity removal 88,2%, and average E. Coli removal 100%. N2 adsorption-desorption result on ceramic filter number 10 showed 0,04μm pore size, and 4,32m2/g pore surface area. The result from the XRD (X-ray diffractometer) indicates crystal structure of calcite and quartz on ceramic filter surface. Energy Dispersive X-ray (EDX) analysis showed Carbon compound as the most material constituent within the filter. Whereas micro’s photo using SEM (scanning electron microscopic) and TEM (transmitted electron microscopic) showed filter surface consists of stacked aggregates, separated by more randomly oriented particles.
Pemodelan matematis pengurangan COD dalam air limbah industri penyamakan kulit secara adsorpsi kontinyu menggunakan abu terbang bagas Sholeh, Muhammad; Sarto, Sarto; Prasetya, Agus
Majalah Kulit, Karet, dan Plastik Vol 29, No 1 (2013): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.475 KB) | DOI: 10.20543/mkkp.v29i1.214

Abstract

ABSTRACTThe objective of this research was to obtain suitable mathematical model for ChemicalOxygen Demand (COD) removal originated from tannery wastewater using bagasse fly ash incontinuous system. In the column experiment, effect of flowrate, concentration of wastewater,and bulk density were studied. Three models: Adams-Bohart, Thomas, and Yan were applied toexperimental data to predict the breakthrough curve. The best model was evaluated usingcorrelation coefficients. Yan model was found to give the most accurate to describe dynamicbehavior of the column experiment. The best result was obtained at flowrate of 100 mL/min,concentration of 400 mg/L, and bulk density of 61 g/L. The Yan kinetic constant (k ) and the Yadsorption capacity (q ) were 0.3210 mL/mg/min and 17.0947 mg/g respectively and the Ycorrelation coefficient obtained was 0.9379.Keywords: Chemical Oxygen Demand, tannery wastewater, bagasse fly ash, adsorptionABSTRAKpengurangan COD dalam air limbah industri penyamakan kulit mengunakan abu terbang bagassecara kontinyu. Variasi percobaan adsorpsi dalam kolom yang dilakukan yaitu: kecepatan aliranair limbah, konsentrasi air limbah, dan bobot isi. Persamaan Adams-Bohart, Thomas, dan Yandiaplikasikan ke data percobaan untuk memprediksikan kurva breakthrough. Koefisien korelasidigunakan untuk mengevaluasi model terbaik. Proses pengurangan COD dengan abu terbangbagas secara kontinyu dalam kolom paling cocok dimodelkan dengan model Yan. Hasil terbaikdiperoleh pada kecepatan aliran air limbah 100 mL/menit, konsentrasi air limbah 400 mg/L, danbobot isi 61 g/L. Parameter konstanta kinetika (k ) dan kapasitas adsorpsi (q ) yang diperoleh Y Yberturut-turut sebesar 0,3210 mL/mg/menit dan 17,0947 mg/g dengan nilai koefisien korelasiyang didapatkan yaitu 0,9379.Kata kunci: Chemical Oxygen Demand, air limbah industri penyamakan kulit, abu terbang bagas,adsorpsi
Pengolahan air limbah industri penyamakan kulit menggunakan abu terbang bagas secara batch Sarto, Sarto; Prasetya, Agus; Sholeh, Muhammad
Majalah Kulit, Karet, dan Plastik Vol 28, No 1 (2012): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.709 KB) | DOI: 10.20543/mkkp.v28i1.202

Abstract

The objective of this research was to evaluate the adsorption ability of chemically activated bagasse fly ash using H O or H SO to remove COD from tannery wastewater and to obtain 2 adsorption isotherm model in batch system. Two stages have been carried out, namely the activation experiment and the adsorption isotherm experiment. In the activation experiment, effect of H O dan H SO (3% and 7,5% w/w) were studied. The best result of the variation was used in the next experiment. In the adsorption isotherm experiment, variation of the initial concentrations of COD from 52,53 to 1665,79 mg/L and mass of bagasse fly ash from 0,1 to 0,4 g were used. Equilibrium data was used to evaluate the parameters in the Langmuir, Freundlich, and Temkin equations. The best model was evaluated using determination coefficients. The results showed that bagas fly ash had better ability to reduce the COD when it was not activated with H O nor H SO (3% and 7,5%). Freundlich model was best to describe COD removal using bagasse fly ash in batch system. Freundlich equation constants K and n were F 0,4360 (mg/g)/(L/mg)1/n and 1,2969 respectively and the determination coefficient obtained was 0,93.  Keywords: Chemical Oxygen Demand, tannery wastewater, bagasse fly ash, adsorption
MODIFIKASI SISTEM DESTILASI MINYAK ATSIRI DAUN SIRIH (PIPER BETLE LINN) DENGAN PENERAPAN VOLUME AIR REBUSAN KONSTAN Widodo -; Agus Prasetya
ASEAN Journal of Systems Engineering Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

Most of the cultivation of essential oils, done with the process of distillation such as water distillation systems, direct steam distillation and steam boiler distillation. And was developed on a small/medium scale industry throughout the archipelago.In the process of water distillation, the flow rate and level of oil transport are determined by the ratio of raw materials volume versus distillations water volume. Later on, affected by the steam temperature as well. Both were influenced by the vapor pressure inside the boiling tank, which will determine the level of vapor saturation of oil to be transported.Modifiying the distillations process with applying a control tank to avoid decreasing of distillations watter during the process, with increasing the steam pressure, has successfully improove the oil transports until its optimum rates.By ratio of 4:1 with increasing steam pressure up to 0.3 kgf/cm2, has affecedt to incresing the steam temperature and the rate of oil transport, there for iproofing the yield from 0.44% to 0.71% by total of 80 l water condensate.
DESAIN BIOBALL BERBAHAN KOMPOSIT BULU AYAM-RESIN POLYESTER: SIFAT MATERIAL, KARAKTERISTIK BENTUK DAN KARAKTERISTIK HIDRAULIK Ruslim Budianto; Agus Prasetya; Mudjijana -
ASEAN Journal of Systems Engineering Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

Chicken Feather is main waste product of chicken processing as food, however it has a good potential for used in composite material. Material stiffness increase caused by hydrophobic Keratin which is contained in chicken feather both feather quill and feather fiber. Composite material as biofilter media potentially used to improve effectively of septic tank.  The study was conducted to determine the effect of chicken feather fiber adding on density, impact strength and flexural strength of polyester composite, with addition of 10%, 15%, 20%, and 25% of feather fiber as variable. The best composition by mechanical test applied as biofilter material (bioball). Bioball characteristic was investigated to give some parameters used in wastewater treatment design, such as porosity of media, specific surface area, and density of bed media, spherical factor and biomass accumulation capacity. The parameters investigated in each bioball media with wide of bioball’s wall gap are 2 mm, 3 mm and 4 mm as variable.         Chicken feather fiber composite has been used as bioball material provided light material 1,124 gr/cm3 in density. Increase in material strength was obtained by adding chicken feather fiber, bioball have been made has 44.291 MPa in maximum flexural strength and 5,781 kJ/cm2 in maximum impact strength. Bioball which has casted 5 cm in diameter, divided into three of types; bioball 2 (wall space 2 mm), bioball 3 (wall space 3 mm) and bioball 4 (wall space 4 mm). Bioball have been made has 260-369 cm2/cm3 of specific surface are and 0.78-0.83 of porosity. Based on spherical factor calculation bioball was more similar to parallel plate than rounded shape. Overall the shape was not rounded with spherical factor value between 0.23-0.358. Bioball 2 has the highest biomass capacity. Based on the test, biomass accumulation capacity of bioball 2 was up to 7.0 kg/m3 with estimation of backwashing time is every 20 hours.
Pengolahan Nitrifikasi Limbah Amonia dan Denitrifikasi Limbah Fosfat dengan Biofilter Tercelup Satria, Arysca Wisnu; Rahmawati, Merza; Prasetya, Agus
Jurnal Teknologi Lingkungan Vol. 20 No. 2 (2019)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.938 KB) | DOI: 10.29122/jtl.v20i2.3479

Abstract

ABSTRACTWater pollution is a problem that often arises and gives a serious impact to the environment. Therefore, it should be reduced by conventional methods or modern methods. The submerged biofilter is a biological waste treatment plant that utilizing microorganisms grown in a packing medium. The advantages of submerged biofilter as a waste treatment plant are easy to use and low energy consumption so the operational cost is cheaper. This study aims to determine the operational parameters of the submerged biofilter and to develop a model that can be used to estimate the rate of elimination of each pollutant using nitrification reactor for ammonia and denitrification reactor for phosphate. The experiments were conducted with draining the wastewater in a cylindrical bio-filter column in which the hight is 90 cm. At first, the microorganism was grown for two weeks with the residence time of one day. Furthermore, the wastewater removals are conducted with hydraulic loading rate (HLR) variation of 0.44; 0.55; 0.74; 1.11; 1.66; 2.21; and 3.32 m3/m2/day. Then the effluent from the outlet is analyzed using UV-Vis Spectrophotometer. The results showed that the optimum ammonia and phosphate removal was obtained in 0.44 m3/m2/day for ammonia removal and 1.66 m3/m2/day for phosphate removal. While the removal of ammonia and phosphate percentage from both conditions are 97.41% and 27.16% respectively. The changes of HLR will give an effect on substrate reduction rate (SRR), and the percentage of substrate removal. The model developed based on efficiency factors presented a good approach to represent the concentration of substrate effluent at various HLR. Keywords: wasteswater, nitrification, denitrification, submerged biofilter ABSTRAKPencemaran air merupakan permasalahan yang sering muncul dan berpengaruh serius pada lingkungan. Oleh karena itu, perlu dilakukan usaha yang berkelanjutan untuk dapat mengurangi dampak dari pencemaran tersebut, baik dengan cara-cara konvensional maupun inovasi teknologi terbaru. Biofilter tercelup (submerged biofilter) adalah suatu alat pengolah limbah secara biologi dengan memanfaatkan mikroorganisme yang ditumbuhkan dalam media packing di dalamnya. Kelebihan penggunaan biofilter tercelup sebagai alat pengolah air limbah adalah pengelolaannya yang mudah dan konsumsi energi yang rendah sehingga biaya operasionalnya murah. Penelitian ini bertujuan untuk mengetahui parameter operasional biofilter tercelup dan mengembangkan model untuk memperkirakan laju penyisihan setiap polutan menggunakan reaktor nitrifikasi untuk limbah amonia dan reaktor denitrifikasi untuk fosfat. Percobaan dilakukan dengan mengalirkan limbah pada sebuah kolom biofilter berbentuk silinder dengan ketinggian 90 cm. Pada mulanya mikroorganisme ditumbuhkan dengan mengalirkan limbah selama dua minggu dengan waktu tinggal cairan satu hari. Selanjutnya dilakukan penyisihan limbah dengan variasi kecepatan beban hidrolik (HLR) sebesar 0,44; 0,55; 0,74; 1,11; 1,66; 2,21; dan 3,32 m3/m2/hari. Effluent dari keluaran reaktor kemudian dianalisis menggunakan Spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa kondisi optimum penyisihan amonia dan fosfat adalah 0,44 m3/m2/hari untuk penyisihan amonia dan 1,66 m3/m2/hari untuk penyisihan fosfat. Persentase removal amonia dan fosfat dari kedua kondisi tersebut berturut-turut sebesar 97,41% dan 27,16%. Perubahan HLR berpengaruh terhadap kecepatan penyisihan limbah (SRR), dan persentase limbah tersisihkan. Model yang dikembangkan berdasarkan faktor efisiensi memberikan hasil yang cukup baik untuk merepresentasikan besarnya konsentrasi effluent limbah pada berbagai variasi HLRKata kunci: limbah cair, nitrikasi, denitrifikasi, biofilter tercelup 
Selectivity of Leaching From Kulonprogo’s Lowgrade Manganese Ore with Organic Acid : Oxalic Acid, Acetic Acid and Citric Acid Rima Dewi Anggraeni; Agus Prasetya; Rochim Bakti Cahyono
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

DESAIN SISTEM INSTRUMENTASI PROSES DISTILASI FRAKSINASI BATCH BERBASIS KENDALI SUHU Muhammad Arman; Agus Prasetya; Sihana -
ASEAN Journal of Systems Engineering Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

Distillation column is a column that is widely used in both large industry and small and medium industries. Use of distalasi column on small and medium industries such as the distillation of essential oils. In the subsequent use of the distillation column used for purification or further process to obtain a higher quality product in the form of multstage distillation. In the process of multistages distillation,  temperature is an important component in the process, because of that controls the temperature has an important role. Temperature controllers available today are manual, which causes frequent inaccuracy of the distillation process, resulting in low product quality. Therefore automatic temperature control is required.In this thesis, instrumentation system of fractionation distillation process based of temperature control are designed. The design process notice the six important  point temperature in the distillation process, using a thermocouple as a temperature sensor, and LM35 as the cold junction temperature,  the 6218 USB as Data Acquisition Board, and the software LABVIEW 2010.The instrumentation system programming, displays the temperature from time to time at intervals of one second, the temperature statistics (min, max and average) as well as measurement results table. The program also features a choice (shaped slider) to  set the temperature for a flexible batch process. The response characteristics of the instrumentation system is less than one second, both in displaying measured data, response indicator, display graphs, and data tables. The instrumentation system is also designed to regulate the flow rate of the cooling water and container replacement indicator for each product distillation.
Co-Authors Agus Aktawan Ahmad Tawfiequrrahman Yuliansyah Ai Siti Patimah Alfiana Adhitasari AM Lelie Novia W Ambar Pertiwiningrum Angge Dhevi Warisaura Anggun Rahmada Anshori, Shodiq Arif Rahman Hakim Armaidy Armawi Astri Senania, Astri Aswati Mindaryani Awaluddin Nurmiyanto, Awaluddin Bagus Putro Budi Utomo Bengt Andersson Beni Dwi Komara Bidhari Pidhatika Brian Hayden Budi Kamulyan Dagus Resmana Djuanda Deden Ependi Dewi, Anggra Lita Sandra Dwi Saputri Dwi Saputri Dwi Tyaningsih Adriyanti Edhi Martono Edia Rahayuningsih Edia Rahayuningsih Erlina Kurnianingtyas Erna Astuti Fadlilah, Ilma Fajar Marendra Fajar Marendra Fajar Marendra Farid Ma'ruf Felix Arie Setiawan Ferian Anggara Halomoan Siagian haries handoyo Hary Sulistyo Hary Sulistyo Hary Sulistyo Himawan T. B. M. Petrus Himawan Tri Bayu Murti Petrus Himawan Tri Bayu Murti Petrus Hotden Manurung I Made Bendiyasa I Made Bendiyasa Ilma Fadlilah Ilma Fatimah Yusuf Iman Haryanto Indah Noor Dwi Kusuma Dewi Indra Perdana Indra Perdana Kirana Dipta Rakhmasari Krister Ström Laras Prasakti Mahfudl Sidiq Muhayyat Maria Ratih Puspita Liestiono Martha Helsanggi Maulana Gilar Nugraha Mochamad Syamsiro Moh. Fahrurrozi Mudjijana Mudjijana - Muhammad A. A. Ramadhan, Muhammad Muhammad Arman Muhammad Hidayat Furqon Muhammad Sholeh MUHAMMAD SHOLEH Muhammad Sigit Cahyono mulhidin, mulhidin Novie Putri Setianingrum Novie Putri Setianingrum Panut Mulyono Radwinda Kurnia Putri Rahmawati, Merza Rikhanatul Firdausy Puspitasari Rikhanatul Firdausy Puspitasari Rima Dewi Anggraeni Rizka Lestari Rizki Laksono, Rizki Rochim Bakti Cahyono Rochim Bakti Cahyono Rochmadi Rochmadi Ruslim Budianto Sarah Nabila Salma Sarto Sarto Sarto Sarto Sarto Sarto Sarto Sarto Satria, Arysca Wisnu Satryo Dewanto Suryohendrasworo Sigit Heru Murti Sihana - Sihana - Siti Syamsiah Stenly Recky Bontinge Supranto - Supranto Supranto Teguh Ariyanto Tri Winarni Soenarto Putri Ula, Rahmah Arfiyah Ulan Paluti Agustina Wahyu Wilopo Widi Astuti Widodo - Widya Rosita Zaizamshimi Nurul Farah Dyana