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Hartati, Etih
Institut Teknologi Nasional Bandung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Pengaruh Variasi Sirkulasi Substrat terhadap Penyisihan Senyawa Organik pada Reaktor Metanogenesis IKRIMA NURUL AMALIYAH; ETIH HARTATI; SALAFUDIN SALAFUDIN
Jurnal Reka Lingkungan Vol 6, No 1 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v6i1.%p

Abstract

ABSTRAKMayoritas sampah di Indonesia ialah sampah organik, sehingga perlu dilakukan pengolahan untuk mengurangi sampah yang masuk ke TPA. Alternatif pengolahan sampah organik yang dilakukan adalah digester anaerobik. Penelitian ini mengolah sampah organik dari cafetaria Itenas menggunakan reaktor fixed bed digester anaerobik.Volume Kerja reaktor fixed bed ini ialah 180 liter dengan media sponge filter. Tujuan penelitian adalah untuk mengetahui pengaruh waktu sirkulasi substrat terhadap penyisihan senyawa organik. Variasi sirkulasi substrat yang dilakukan ialah sebanyak 5, 6, dan 7 jam sirkulasi. Metode pengukuran yang digunakan pada parameter Chemical Oxygen Demand(COD) danTotal Asam Volatil (TAV) ialah standar method for the eximination water and wastewater 22th edition, sedangkan pengukuran parameter pH dan temperatur menggunakan metode SNI (Standar Nasional Indonesia). Hasil dari penelitian ini ialah perolehan penyisihan senyawa organik, yaitu penyisihan COD sebesar 86,67% dan penyisihan TAV sebesar 85,52 % pada waktu sirkulasi 7 jam/ hari dengan menerapkan reaktor fixed bed.Kata kunci : proses anaerob, reaktor metanogenesis, sirkulasi substrat
Seeding dan Aklimatisasi pada Proses Anaerob Two Stage System menggunakan Reaktor Fixed Bed RIZKI AMALIA ANANDA; ETIH HARTATI; SALAFUDIN SALAFUDIN
Jurnal Reka Lingkungan Vol 6, No 1 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v6i1.%p

Abstract

AbstrakProses anaerob adalah suatu aktivitas pemecahan bahan-bahan organik oleh mikroorganisme dalam keadaan tanpa oksigen. Pada proses anaerob perlu adanya seeding dan aklimatisasi agar mikroorganisme dapat menyesuaikan diri. Tujuan dari penelitian ini adalah untuk mengkondisikan mikroorganisme agar dapat menyesuaikan diri dengan materi organik yang akan diolah yaitu substrat dari sampah organik yang berasal dari Cafetaria Itenas. Pada penelitian ini proses anaerob yang dilakukan menggunakan two stage anaerobic digestion system, dimana pengkondisian substrat berupa penguraian materi organik menjadi asam volatil dilakukan di dalam reaktor hidrolisis, sedangkan seeding dan aklimatisasi dilakukan di reakator metanogenesis. Parameter yang diperiksa selama seeding dan aklimatisasi adalah pH, temperatur dan COD. Hasil penelitian menunjukan bahwa aktivitas mikroorganisme telah dapat berkembang biak dengan baik dalam waktu 11 hari pada proses aklimatisasi. Selama proses aklimatisasi, fluktuasi penyisihan COD pada hari ke 9 hingga 11 telah relatif konstan yaitu sebesar 10% dan tidak terjadi lagi penurunan. Selama proses aklimatisasi pH berada pada rentang 6,73-8,47 dan temperatur berada pada rentang 28,00°C-30,60°C.
Analisis Tingkat Ekonomi untuk Jenis Penutup Harian Alternatif di TPPAS Regional Sarimukti PANDU ARJASA; ETIH HARTATI; SITI AINUN
Jurnal Reka Lingkungan Vol 6, No 2 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v6i2.%p

Abstract

ABSTRAK TPPAS Regional Sarimukti saat ini masih menerapkan sistem control landfill dengan periode penutupan sampah dua kali dalam satu tahun. Penerapan sistem control landfill dengan periode operasi ini disebabkan oleh adanya kendala berupa biaya operasional, pemeliharaan dan investasi, serta dari segi ketersediaan bahan penutup tanah urug.Selain itu, kondisi tersebutmasih menimbulkan dampak negatif terhadap lingkungan. Perlu dilakukan pengoptimalan TPPAS Regional Sarimukti. Pada penelitian ini dilakukan metode penimbunan sampah dengan sistem sanitary landfill, dan pemilihan jenis penutup harian alternatif yang mampu menekan biaya operasional penutupan harian. Data primer didapatkan dengan metode observasi lapangan dan wawancara, sementara data sekunder dengan memperhitungkan aspek biaya operasional, ketersediaan bahan dan kemudahan operasional. Selanjutnya dilakukan analisis menggunakan metode weight ranking technique untuk menentukan alternatif terpilih. Didapat hasil jenis penutup harian terpilih yaitu jenis plastik biodegradable, dengan biaya operasional penutupan harian sebesar Rp1.897.729,02, dan dapat dioperasikan tanpa bantuan alat berat.Pemakaian jenis penutup harian alternatif plastik biodegradable Ecoplas untuk penutupan harian sampah perlu terlebih dahulu dilakukan kajian, agar pihak pengelola TPA di Indonesia mulai tertarik untuk menerapkannya. Kata Kunci: penutup harian, biaya operasional, TPA, Sarimukti 
Analisis Penentuan Jalur Pipa Sistem Penyaluran Air Limbah Domestik dengan Weighted Ranking Technique (WRT) di Kecamatan Bogor Tengah WIDHI SALLY SUFINAH ROSADI; ETIH HARTATI; NICO HALOMOAN
Jurnal Reka Lingkungan Vol 8, No 1 (2020)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v8i1.14-25

Abstract

AbstrakKecamatan Bogor Tengah merupakan pusat pelayanan Kota Bogor dengan tingkat kepadatan penduduk paling tinggi di Kota Bogor, yaitu sebesar 128,8 jiwa/ha. Dalam upaya mengelola air limbah domestik, Pemerintah Kota Bogor melalui RTRW Kota Bogor tahun 2011-2031, merencanakan penyaluran air limbah domestik dengan sistem terpusat mengingat tidak memungkinkan setiap rumah memiliki sistem setempat. Pada perencanan ini, dibuat 2 buah alternatif jalur untuk selanjutnya dipilih jalur yang paling sesuai dengan kriteria teknis yang dipersyaratkan. Metode pendekatan yang digunakan adalah Weighted Ranking Technique (WRT). WRT merupakan metode pemilihan alternatif yang didasarkan pada pemberian bobot terhadap parameter. Berdasarkan hasil analisis, terpilih jalur alternatif 1 sebagai jalur pipa terbaik dengan nilai akhir 0,26. Alternatif 1 memiliki rata rata kecepatan minimum 1,69 m3/detik, waktu pengaliran 8,37 jam,biaya pembelian pipa sebesar Rp. 275.670.000,-, luas area terlayani 67,48 %, dan jumlah aksesoris yaitu 123 unit manhole dan 1 unit siphon.Kata kunci: Pemilihan alternatif jalur pipa, sistem terpusat, Weighted Ranking Technique (WRT) AbstractBogor Tengah sub-district is the service center of Bogor City with the highest population density in Bogor City, which is 128.8 people/ha. In an effort to manage domestic wastewater, Bogor City Government through RTRW Kota Bogor 2011-2031, has planned the distribution of domestic wastewater with offsite system since it does not allow every house to have an onsite system. In this plan, 2 pipeline alternatives were identified, to be later selected among those two.The approach method used is Weighted Ranking Technique (WRT). WRT is an alternative selection method based on weighting of parameters. Based on the analysis result, the alternative path 1 was chosen as the best pipeline with the final value of 0,26. Alternative 1 has a minimum flow rate is 1.69 m3 / sec, the flow time is 8.37 hours, the cost of purchasing a pipe of Rp. 275.670.000,-, the area served is 67.48%, and the number of accessories is 123 manhole units and 1 siphon unit. Keywords: Alternative selection of pipeline, offsite system, Weighted Ranking 
Penentuan Metode Intensitas Hujan Berdasarkan Karakteristik Hujan dari Stasiun Pengamat Hujan Disekitar Kecamatan Karawang Timur Melisa Permatasari; M. Candra Nugraha; Etih Hartati
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1603

Abstract

The rain intensity is the high rainfall in unit of time. The length of rain will be reversed by the amount rain intensity. The shorter time the rain lasts, the greater of the intensity and re-period of its rain. The value of rain intensity is required to calculate the flood discharge plan on the drainage system planning area in East Karawang district. Determining the value rain intensity is required the maximum daily rainfall data obtained from the main observer stations in the Plawad station planning area. The method of determination rain intensity analysis can be done with three methods: Van Breen, Bell Tanimoto and Hasper der Weduwen. Selected method is based on the smallest deviation value. Determination deviation value is determined by comparing rain intensity value of Van Breen method, Bell Tanimoto, Hasper der Weduwen. By comparing rain intensity value of the Van Breen method, Bell Tanimoto, Hasper der Weduwen with the results of calculating three methods through the method approach Talbot, Sherman and Ishiguro. Calculation results show that the method of rain has smallest deviation standard is method Van Breen with Talbot approach for rainy period (PUH) 2, 5, 10, 25, 50 and 100 years.
Hubungan Perubahan Tata Guna Lahan dengan Debit Air Limpasan pada Kawasan Hunian Pantai Indah Kapuk 2 Alfianabila Yusfiaka; Etih Hartati; M. Candra Nugraha
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1598

Abstract

The construction of the residential and commercial area of Pantai Indah Kapuk (PIK) 2 Cluster “D” is located in the part of two sub-district, which is Sub-district of Kosambi and Sub-district of Teluknaga. PIK 2 Cluster “D” has an area of 508,59 Ha. With the construction of PIK 2 Cluster “D”, there will be a change of land use and an enchancement of run off water. The relationship between the change of land use and the enhancement of run off water can be seen from run off peak deviation for reset time T year (Qr) on existing condition with planning condition after the change of land use. The method used is the rational method which is estimating run off peak. There is an enhancement off run off coefficient value (C) on existing condition about 0,46 and 0,81 on planning condition which causing an enhancement off run off peak in planning area as the effect of the change of land use as Q = 87,59 m3/second. The enhancement of run off coefficient value as the effect of the change of land use is directly proportional with the enhancement of run off peak in case study residential and commercial area of PIK 2 Cluster “D”.
Recovery Kitin Dari Limbah Cangkang Rajungan Muhammad Hazqil Kadzim; Djaenudin Djaenudin; Etih Hartati
Jurnal Serambi Engineering Vol 5, No 4 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i4.2321

Abstract

The small crab animal is important for the fisheries sector in Indonesia, but usually the small crab industry only takes meat and allows the crab shell to become a pile of waste.  To reduce the potential for pollution caused by a small crab shell waste, the waste can be reused to obtain chitin.  Small crab shell waste still contains quite a lot of chemical compounds, including protein, minerals (CACO), and chitin.  The study conducted chitin extraction with a process preceded by deproteination and then demineralization.  Chitin was characterized using Fourier Transform Infra Red (FTIR) and Scanning Electron Microscopy (SEM).  The results showed that chitin was successfully extracted from the small crab shell through the deproteination and demineralization process with FTIR l, which results the characteristic spectrum of chitin compounds such as waves of 3433 cm 'for -OH, -NH groups.  The absorption around the wave number 3433 cm occurs because of the overlap between the absorption -NH and -OH and the wave number 701 cm 'for the b-1,4-glycosidic group.
Penyisihan Krom pada Pengolahan Air Limbah Penyamakan Kulit Menggunakan Metode Elektrokoagulasi Lina Hasyyati; Etih Hartati; Djaenudin Djaenudin
Jurnal Serambi Engineering Vol 5, No 4 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i4.2317

Abstract

Tanning is the process that converts animal hides and skin into stable and imputrescible products called leather. The production processes in a tanning use chromium sulfat. Chrome metal is a heavy metal that is toxic, so the waste water from the leather tanning process will pollute the environment if it is not treated. In this research, wastewater treatment is used by electrocoagulation method to determine the effect of operating on the chromium removal to obtain optimal conditions. In this study, electrocoagulation experiments were using aluminum electrodes. Electrocoagulation process was carried out in 9 variations with parameters pH, electrical current and time where pH was set at pH 7. Electrical current done on 0.5 A, 1 A, and 1.5 A. Time done in 1 hour, 2 hours and 3 hours. The experiment results were analyzed by comparing the concentration before processing and concentration after processing to obtain efficiency. Based on the experimental result on 9 variations, the variation that has the highest efficiency is at electrical current 1.5 Ampere and time 3 hours. This variation can remove 78.95 % chrome concentration from 245.1 mg/L to 51.6 mg/L.
Analisis Karakteristik Curah Hujan pada Kawasan Hunian dan Komersial Pantai Indah Kapuk (PIK) 2 Cluster “C” Nur Afifah Sari; Etih Hartati; M. Candra Nugraha
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1600

Abstract

Based on the hydrological cycle, one of the main water sources is rainwater. weather or climate conditions that occur will greatly affect the nature and condition of a rain or rainy season. On a global scale, the existence of water naturally is constant, only occurs in variations both in time and space on a regional scale. Analysis of the rainfall characteristics of Pantai Indah Kapuk (PIK) residential and commercial areas 2  Cluster "C" in Tangerang Regency, Banten Province, is for to find out the intensity of rainfall used for drainage planning. The daily rainfall data used includes 5 rain catching stations with a duration of 25 years (1994 - 2018). The Van Breen method is used to process rainfall data within a certain period into rainfall intensity with various times for drainage planning used. In the planning of drainage channels the rainfall return period used is PUH 2 for tertiary lines with selected rainfall data of 192 mm / day and PUH 5 for secondary lines with selected rainfall data of 219 mm / day. The IDF curve shows that rainfall intensity is affected by the time and return period of rainfall, where the shorter the rainfall time and the greater the return period of rainfall, the higher the intensity of rainfall produced.
Analisis Indeks Kebutuhan Lahan dan Biaya dari Perencanaan IPAL Terpadu di Kawasan Aerocity X Adryan Lukman Indira; Didin Agustian Permadi; Etih Hartati
Jurnal Serambi Engineering Vol 6, No 3 (2021): Juli 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i3.3047

Abstract

District Aerocity X in Kabupaten Majalengka is a commercial  and industrial area that enhances  economic growth in Provinsi Jawa Barat. The district with an area of 3,480 ha is integrated into  the domestic sector. However, this area  also has the potential  to cause harm  if the waste is not treated.  Following PP No 142 Tahun 2015,  each industrial area  must provide an effective and efficient wastewater treatment plant (WWTP). This design  plan begins with the  analysis  of issues  on the study site . The data were obtained using the Aerocity X District Pre-Development Office  study method .  The method of  designing effective alternatives for WWTP used the weighted ranking technique (WRT), each alternative was compared with two fundamental,  technical and non-technical aspects. The purpose of this design plan is to analyze the index of land and cost requirements for WWTP. The yield of wastewater was 3.99 m3/s. The most effective land and the cost is complete mix-activated sludge. The result of installing  the design plan requires an area of 9,446.5 m2/m3 of wastewater and a cost of Rp5,619.53x106/m3 of wastewater.
Co-Authors ADI SEMARTA, I WAYAN WINDU ADITYA PRATAMA Aditya Rifqi Rizqullah Adryan Lukman Indira Alca Pratama Putra Alfianabila Yusfiaka Ali Djamhuri Ayunda Sean Bali Widodo Didin Agustian Permadi Dimas Rizki Darmawan Dinda Dwi Paramita Djaenudin Djaenudin Djaenudin Djaenudin Dyah Marganingrum Dyah Marganingrum Dyah Marganingrum Dyah Marganingrum Elvira, Verina Fandy Ahmad Fauzy Halomoan, Nico Halomoan, Nico I WAYAN WINDU ADI SEMARTA IKRIMA NURUL AMALIYAH Indrianti Kurnia Kamila Khalishah KHAIRIL IRFAN SIREGAR Lina Hasyyati M Candra Nugraha Deni Mahardika Saputra Melisa Permatasari Memey Suhaya Putri Mohamad Rangga Sururi Muhamad Firqi Ramadhan Muhammad Hazqil Kadzim Mumu Sutisna NESYA AMANDASARI H Nico Halomoan Nur Afifah Sari Nur Assyiffa Rahmawati Nursandi S., Windi Nurtati Soewarno PANDU ARJASA Rachmawati S. D. J Rahli, Azura Nur Islami RAHMAULINA, DINI Raisa Nur Azizah Rio Andi Suhandi Risma Mustami RIZKI AMALIA ANANDA Rosadi, Widhi Sally Sufinah SALAFUDIN SALAFUDIN Salafudin Salafudin, Salafudin Saputra, Mahardika Sari, Fitri Nisriina Shirley Wahadamaputera Siregar, Khairil Irfan Siti Ainun Sufinah Rosadi, Widhi Sally Triana Herdiaprila Trisha Ajeng Larasaty Waluyo Widhi Sally Sufinah Rosadi WIDHI SALLY SUFINAH ROSADI WISYE NURFITRIANA Yudhi Tirta Anugrah