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All Journal Jurnal Reka Lingkungan Journal of Community Based Environmental Engineering and Management Jurnal Teknik Kimia dan Lingkungan JURNAL REKAYASA KIMIA & LINGKUNGAN
Marisa Handajani
Kelompok Keahlian Rekayasa Air dan Limbah Cair, Fakultas Teknik Sipil dan Lingkungan, Institut Teknologi Bandung. Jln. Ganesha No. 10, Bandung, 40132.
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Materials Science & Nanotechnology Public Health Other

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Chemical-Thermal Activation to Improve the Characterization of Sludge-Based Activated Carbon (SBAC) from Palm Oil Mill Sludge (POMS) Inema, Dinda Dwiana; Handajani, Marisa
Jurnal Teknik Kimia dan Lingkungan Vol. 8 No. 2 (2024): October 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v8i2.5104

Abstract

The development of time and technology triggers significant challenges in preserving the environment. Large-scale industry that uses a large quantity of energy and clean water is the main reason environmental management due to industrial activities needs to be considered properly. In addition to liquid wastewater, waste in the form of sludge used in wastewater management is also a new problem that requires special attention. Sludge-based activated carbon (SBAC) is one of the options for utilizing WWTP sludge in low-cost adsorbent materials. The development of SBAC is a promising solution to solving two-way environmental problems. The most used activation method combines thermal and chemical compound impregnation. This paper aims to prove that Palm Oil Mill Sludge (POMS) can be applied as an adsorbent after chemical and thermal activation. KOH 4M was used with a ratio of 1:1 (weight/volume) with pyrolysis heating at 700oC injected with nitrogen gas (N2). Fourier Transform Infrared Spectroscopy (FTIR) test shows SBAC has hydroxyl and carboxyl functional groups, Pore Size Analyzer (PSA) classified SBAC as microporous with 1.7 nm size of SBAC, iodine number is about 821 mg/g, 23.63% of ash content, 62.96% of fixed carbon, 11.5% of water content, and 15.37% of volatile content.
PENGARUH BEBAN INFLUEN TERHADAP PERFORMA PENGOLAHAN AIR LIMBAH DOMESTIK MENGGUNAKAN FIXED BED SYSTEM DENGAN MEDIA PENUNJANG PVC SARANG TAWON Rizka, Miftahir; Fauzi, Mhd.; Soewondo, Prayatni; Handajani, Marisa; Tedjakusuma, Teddy
Jurnal Reka Lingkungan Vol 12, No 3 (2024)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v12i3.315-326

Abstract

Fixed Bed System merupakan teknologi yang efektif dalam menyisihkan polutan yang media PVC sarang tawon sebagai tempat terlekatnya biofilm. Tujuan dari penelitian ini adalah untuk melihat bagaimana penyisihan organik dan nutrien serta kinetika penyisihan substrat dari reaktor ini yang dioperasikan secara anoksik dengan sistem batch. Sistem anoksik dirancang dengan kandungan oksigen terlarut sekecil mungkin hingga mendekati nol. Air limbah yang digunakan adalah air limbah domestik artifisial dimana sumber karbon, nitrogen, dan fosfor berasal dari senyawa C6H12O6, NH4Cl, dan KH2PO4. Terdapat variasi konsentrasi influen yang masuk yaitu 300, 400, 500, 600, dan 700 mg/L. Berdasarkan hasil penelitian, didapatkan bahwa fixed bed system dengan proses anoxic dapat menyisihkan organik dan nutrien dengan baik. Efisiensi penyisihan COD adalah 84,75±0,6%, ammonia 53,21±0,5%, nitrit 55,46±0,7%, nitrat 91,28±0,5%, NTK 57,34±0,7%, N organik 68,49±0,5%, TN 57,79±0,7%, dan TP 72,28±0,5%. Dari hasil tersebut dapat dilihat bahwa efisiensi penyisihan terbesar untuk reaktor anoksik adalah penyisihan nitrat.  Kinetika penyisihan yang terpilih adalah kinetika orde pertama dengan k1 adalah 0,249 ±0,02/jam. Nilai kinetika yang didapatkan telah mendekati efisiensi penyisihan per jam sebelum steady state dibandingkan dua model lainnya.  
The Influence of Ca2+ Ion Addition on Physical Characteristics of Aerobic Granular Sludge in Sequencing Batch Reactor Anfasha, Nurdian Hari; Handajani, Marisa
Journal of Community Based Environmental Engineering and Management Vol. 8 No. 2 (2024): September 2024
Publisher : Department of Environmental Engineering - Universitas Pasundan - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jcbeem.v8i2.14874

Abstract

Aerobic Granular Sludge is a collection of microbes that allows for the simultaneous removal of carbon, nitrogen, and phosphorus in one reactor system. The formation of Aerobic Granular Sludge is influenced by many factors, such as the type of carbon source, hydrodynamic shear forces, amount of EPS and up to the presence of diavalent cations. In this study Ca2+ ion was added to the reactor as an additional chemical with the aim of investigating the effect of Ca2+ ion dosage on the physical characteristics of Aerobic Granular Sludge. The objective of this research is to find the influence of Ca2+ ions addition to physical characteristics of aerobic granular sludge. There are 3 (three) reactors as a means to compare, with variations in the addition of Ca2+ ions as much as 20 mg/l, 45 mg/l and 100 mg/l which are entered into artificial domestic wastewater. The results obtained from this study are the physical characteristics of granular in reactor 1 has an average diameter ranging between 1.12 mm - 1.72 mm, with an aspect ratio of 0.71, then in reactor 2 has an average diameter ranging between 1.63 mm - 2.23 mm, with an aspect ratio of 0.8, and Reactor 3 has an average ranging 1.78 mm - 3.14 mm with an aspect ratio of 0.81. SEM analysis conducted showed that reactor 3 showed the presence of more Ca2+ ions than the other reactors. Physical characteristics get better as Ca2+ ions increase.
Kinerja Upflow Anaerobic Fixed Bed Reactor dengan Media Penunjang Batu Apung dalam Penyisihan Organik dan Pembentukan Biogas dari Biowaste Fase Cair Nursetyowati, Prismita; Soewondo, Prayatni; Handajani, Marisa
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 4 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i4.3304

Abstract

Dalam penelitian ini, biowaste yang digunakan adalah sampah pasar. Sampah pasar menyumbang sekitar 12% dari berat total sampah kota. Upflow Anaerobic Fixed Bed Reactor (UAFB-R) yang digunakan dalam penelitian ini memakai media penunjang batu apung dengan resirkulasi efluen dan tanpa pengatur pH. Penelitian ini bertujuan untuk melihat kinerja UAFB-R dengan media penunjang batu apung dalam penyisihan organik dan pembentukan biogas terutama gas metan biowaste fasa cair. Hydraulic Retention Time UAFB-R ditentukan sebesar 6 hari dengan volume operasi sebesar 9 liter. Variasi beban organik influen dalam penelitian adalah 0,32 kg COD/m3.hari, 0,64 kg COD/m3.hari, 0,96 kg COD/m3.hari, 1,28 kg COD/m3.hari, 1,6 kg COD/m3.hari, dan 1,92 kg COD/m3.hari. Pada rentang beban organik influen 0,32 kg COD/m3.hari sampai 1,92 kg COD/m3.hari di kondisi tunak, semakin besar beban organik influen maka efisiensi penyisihan COD semakin kecil dan rasio TAV/Alkalinitas semakin besar. Namun, semakin kecil beban organik influen maka komposisi dan volume gas metan serta methane yield cenderung semakin besar. Saat variasi beban influen 0,96 kg COD/m3.hari dihasilkan volume gas metan terbesar sebanyak 1,77 liter, sedangkan saat variasi beban organik influen 0,64 kg COD/m3.hari dicapai komposisi gas metan dan methane yield terbesar sebesar 77,4% dan 0,249. Selain itu, semakin tinggi konsentrasi sulfat maka maka volume biogas yang terbentuk menjadi lebih kecil.
Co-Authors Anfasha, Nurdian Hari David Andrio DESSY NATALIA Fauzi, Mhd. Inema, Dinda Dwiana Mindriany Syafila Prayatni Soewondo Prismita Nursetyowati, Prismita Rizka, Miftahir Tedjakusuma, Teddy