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PENYISIHAN KANDUNGAN KROMIUM HEXAVALEN (CR6+) PADA LIMBAH HASIL ANALISIS COD DENGAN METODA PRESIPITASI OLEH NAOH DAN CA(OH)2 Mulyadi, Fadli; Pratama, Yulianti; Apriyanti, Lina
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 4, No 1 (2020)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.776 KB) | DOI: 10.26760/jrh.v4i1.9-13

Abstract

ABSTRAKLimbah cair laboratorium pegujian kualitas air merupakan buangan limbah yang berasal dari kegiatan pengujian kualitas air di laboratorium. Salah satu limbah cair laboratorium yang mengandung Cr6+ adalah limbah cair dari hasil pengujian COD (Chemical Oxygen Demand) yang berpotensi mencemari lingkungan karena bersifat karsinogenik. Sehingga dilakukan penelitian untuk mengetahui efisiensi penyisihan Cr6+ pada limbah cair melalui proses presipitasi dengan penggunaan bahan yang minimum dan ekonomis serta efisien. Variasi terhadap jenis dan konsentrasi presipitan yang digunakan pada penelitian ini adalah NaOH dan Ca(OH)2 dengan nilai konsentrasi 50% serta variasi pH yaitu 8; 9; 10; 11. Hasil penelitian diperoleh efisiensi penyisihan Cr6+ pada proses presipitasi sebesar 44,93% pada variasi jenis presipitan Ca(OH)2 dengan konsentrasi 50% serta pada kondisi pH 8,23.Kata kunci: Limbah COD, Kromium Heksavalen, Presipitasi, Adsorpsi, Efisiensi Penyisihan, Karbon Aktif GranularABSTRACTLiquid laboratory waste generated from water quality examination activities especially from the COD (Chemical Oxygen Demand) analysis contains Cr6+ which potentially pollute the environment due to its carcinogenic effect. The research aimed to determine the removal efficiency of Cr6+ treated by precipitation with a minimum amount of precipitate and high efficiency. In this research, variations of pH were made at constant NaOH and Ca(OH)2 concentrations of 50% while pH levels were adjusted to be 8; 9; 10; 11, respectively. Results showed that the highest Cr6+ removal of 44,93% was obtained by Ca(OH)2 50% with the pH adjusted at 8,23.Keywords: COD contained wastewater, Hexavalent Chromium, Precipitation, Adsorption, Granular Activated Carbon.
Pengaruh Variasi Glukosa dalam Pembuatan Selongsong Sosis dengan Proses Fermentasi Air Kelapa menggunakan Sistem Batch Reaktor YUHANIANSYAH, NISA; PRATAMA, YULIANTI; SALAFUDIN, SALAFUDIN
Jurnal Reka Lingkungan Vol 9, No 1 (2021)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.082 KB) | DOI: 10.26760/rekalingkungan.v9i1.45-57

Abstract

AbstrakSalah satu faktor yang mempengaruhi proses pembentukan selulosa dalam proses fermentasi oleh A. xylinum adalah sumber karbon. Tujuan dari penelitian ini adalah untuk menentukan konsentrasi glukosa yang optimum terhadap ketebalan selulosa berdasarkan variasi jenis pipa dan perlakuan pipa. Proses fermentasi menggunakan sistem batch reaktor skala laboratorium yang disuplai oksigen murni selama 16 hari fermentasi dengan nilai pH 4,30. Variasi jenis pipa yang digunakan pada penelitian adalah pipa PVC dan pipa PET dengan perlakuan digores dan tanpa digores. Variasi konsentrasi glukosa yang digunakan pada penelitian adalah 5%, 10%, 15%, 20% dan 25%. Hasil terbaik diperoleh pada penambahan konsentrasi glukosa sebesar 15% dan menggunakan pipa PVC dengan perlakuan digores karena menghasilkan selulosa dengan ketebalan 0,2 cm dengan nilai persentase penurunan COD 62,16%, BOD 72,62%, Kadar Glukosa 87,77%, pH 11,11% dan persentase peningkatan TPC 87,13%.Kata kunci: Acetobacter xylinum, BOD, Fermentasi, Reaktor Batch, TPC  Variasi GlukosaAbstractCellulose is a fermented product by the bacterium. Acetobacter xylinum from the degradation source contained in the coconut water substrate. One factor that influences the process of cellulose formation in the fermentation process by A. xylinum i is a carbon source. The purpose of this study is to determine the optimum glucose concentration on cellulose thickness based on variations of pipe types and pipe treatment. A laboratory-scale batch system reactor which is supplied with pure oxygen for 16 days of fermentation with a pH value of 4.30. Variations in the type of pipe used in the study are PVC pipes and PET pipes with scratched and without scratched treatment. Variations in glucose concentration used in the study were 5%, 10%, 15%, 20% and 25%. The best results were obtained by the thickness of 0.2 cm with a percentage of COD reduction of 62.16%, BOD 72.62%, Glucose Level 87.77%, pH 11.11% and 87.13% TPC increase percentage.Keywords: Acetobacter xylinum, BOD, Fermentation, Batch Reactor, TPC, Variation of Glucose
Pengaruh Variasi Glukosa dalam Pembuatan Selongsong Sosis dengan Proses Fermentasi Air Kelapa menggunakan Sistem Batch Reaktor YUHANIANSYAH, NISA; PRATAMA, YULIANTI; SALAFUDIN, SALAFUDIN
Jurnal Reka Lingkungan Vol 9, No 1 (2021)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.082 KB) | DOI: 10.26760/rekalingkungan.v9i1.45-57

Abstract

AbstrakSalah satu faktor yang mempengaruhi proses pembentukan selulosa dalam proses fermentasi oleh A. xylinum adalah sumber karbon. Tujuan dari penelitian ini adalah untuk menentukan konsentrasi glukosa yang optimum terhadap ketebalan selulosa berdasarkan variasi jenis pipa dan perlakuan pipa. Proses fermentasi menggunakan sistem batch reaktor skala laboratorium yang disuplai oksigen murni selama 16 hari fermentasi dengan nilai pH 4,30. Variasi jenis pipa yang digunakan pada penelitian adalah pipa PVC dan pipa PET dengan perlakuan digores dan tanpa digores. Variasi konsentrasi glukosa yang digunakan pada penelitian adalah 5%, 10%, 15%, 20% dan 25%. Hasil terbaik diperoleh pada penambahan konsentrasi glukosa sebesar 15% dan menggunakan pipa PVC dengan perlakuan digores karena menghasilkan selulosa dengan ketebalan 0,2 cm dengan nilai persentase penurunan COD 62,16%, BOD 72,62%, Kadar Glukosa 87,77%, pH 11,11% dan persentase peningkatan TPC 87,13%.Kata kunci: Acetobacter xylinum, BOD, Fermentasi, Reaktor Batch, TPC  Variasi GlukosaAbstractCellulose is a fermented product by the bacterium. Acetobacter xylinum from the degradation source contained in the coconut water substrate. One factor that influences the process of cellulose formation in the fermentation process by A. xylinum i is a carbon source. The purpose of this study is to determine the optimum glucose concentration on cellulose thickness based on variations of pipe types and pipe treatment. A laboratory-scale batch system reactor which is supplied with pure oxygen for 16 days of fermentation with a pH value of 4.30. Variations in the type of pipe used in the study are PVC pipes and PET pipes with scratched and without scratched treatment. Variations in glucose concentration used in the study were 5%, 10%, 15%, 20% and 25%. The best results were obtained by the thickness of 0.2 cm with a percentage of COD reduction of 62.16%, BOD 72.62%, Glucose Level 87.77%, pH 11.11% and 87.13% TPC increase percentage.Keywords: Acetobacter xylinum, BOD, Fermentation, Batch Reactor, TPC, Variation of Glucose
Analisis Biaya Pengangkutan Sampah Rumah Tangga Eksisting di Kota Cimahi HERYENI, SITI S. ANGGUNISA; PRATAMA, YULIANTI; HALOMOAN, NICO
Jurnal Reka Lingkungan Vol 8, No 1 (2020)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.062 KB) | DOI: 10.26760/rekalingkungan.v8i1.50-58

Abstract

AbstrakBiaya rerata pengelolaan sampah di Kota Cimahi (2012-2016) mencapai ±13 miliar rupiah dengan penerimaan rerata retribusi sampah hanya ±1 miliar rupiah. Biaya pengelolaan sampah kota dipengaruhi oleh timbulan sampah, dimana sebesar 63% sampah kota berasal dari permukiman dengan penerimaan retribusi sampah (permukiman) rerata (2012-2016) hanya ±784 juta rupiah. Retribusi sampah dipungut untuk membayar jasa pengangkutan sampah. Biaya pengangkutan di Kota Cimahi akan semakin meningkat dikarenakan mulai tahun 2021-2037 TPA Sarimukti akan ditutup dan dialihkan ke TPA Legok Nangka dengan jarak yang lebih jauh, sehingga pada penelitian ini dilakukan analisis biaya pengangkutan sampah rumah tangga eksisting di Kota Cimahi. Metode analisis data yang digunakan adalah deskriptif-kuantitatif. Analisis biaya pengangkutan dilakukan dengan membandingkan penerimaan retribusi sampah dengan biaya pengangkutan, serta dilakukan perbandingan dengan Kota Yogyakarta. Berdasarkan hasil analisis diperoleh bahwa kontribusi penerimaan retribusi sampah permukiman terhadap biaya pengangkutan hanya 19%, artinya kontribusi penerimaan retribusi sampah relatif kecil dan tidak dapat dijadikan sumber anggaran utama. Kata kunci: Biaya Pengangkutan Sampah, Retribusi Sampah Rumah Tangga, Kota CimahiAbstractThe average cost of solid waste management in Cimahi City (2012-2016) reaches ± 13 billion rupiah with the average revenue of waste levies is only ± 1 billion rupiah. The cost of municipal solid waste management is influenced by waste generation, which 63% of the waste comes from household with average waste collection (household) (2012-2016) is only ± 784 million rupiah. Data analysis method used is descriptive-quantitative. Transportation cost analysis is done by comparing the acceptance of wastecollection with transportation cost, and comparing with Yogyakarta city. Based on the analysis result, it is found that the contribution of waste collection with transportation cost is only 19%, that means the contribution of waste retribution acceptance is relatively small and can not be used as the main budget source. Keywords: Cost of Transportating Waste, Domestic Waste Collection, Cimahi City
Analisis Tarif Pengelolaan Sampah Berdasarkan Ability To Pay dan Willingness To Pay di Kecamatan Cimahi Tengah HASBULLAH, ZAMADILA ROSYIDA; PHARMAWATI, KANCITRA; PRATAMA, YULIANTI
Jurnal Reka Lingkungan Vol 8, No 1 (2020)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (676.19 KB) | DOI: 10.26760/rekalingkungan.v8i1.1-13

Abstract

AbstrakKecamatan Cimahi Tengah merupakan pusat Kota Cimahi yang terdapat aktivitas didalamnya seperti pemukiman, perkantoran, pusat perbelanjaan, pusat pendidikan militer yang menghasilkan sampah dalam kegiatan sehari-hari. Timbulan sampah domestik di Kecamatan Cimahi Tengah sebesar 53,36 ton/hari. Biaya pembuangan sampah ke Tempat Pemrosesan Akhir (TPA) Sarimukti mengalami kenaikan dari Rp. 29.000 menjadi Rp. 50.000 per ton sampah, tahun 2016 target retribusi masyarakat sebesar 8%, namun target retribusi hanya mencapai 5,8%, sehingga beban yang ditanggung pemerintah meningkat. Studi ini bertujuan untuk mengetahui Ability To Pay (ATP) dan Willingness To Pay (WTP) masyarakat di Kecamatan Cimahi Tengah berdasarkan kelas daya listrik, kelas II rumah dengan daya listrik 500 watt sampai dengan 1300 watt dan kelas III rumah dengan daya listrik 250 watt sampai dengan 500 wattterhadap pengelolaan sampah. Metode yang digunakan adalah survei, wawancara, kuesioner, ATP, WTP menggunakan Contingent Valuation Method (CVM).Nilai ATP yang diperoleh pada kelas II dan kelas III adalah Rp. 12.701 dan Rp. 6.829, serta nilai WTP Rp. 7.492 dan Rp. 3.439. Kata kunci: pengelolaan sampah, ATP, WTP, CVMAbstractCimahi Tengah sub-district is the center of Cimahi City which has activities inside such as residential, office, health center, military education center which produce garbage in daily activities. Domestic waste generation in Kecamatan Cimahi Tengah is 53.36 ton / day. The cost of garbage disposal to Sarimukti Final Processing Place (TPA) increased from Rp. 29,000 to Rp. 50,000 per ton of garbage, by 2016 the target of community retribution is 8%, but the retribution target is only 5.8%, so the government will increase. This study is to determine the ability to pay (ATP) and the willingness to pay (WTP) of the community in the District of Central Cimahi based on electric power class, class II house with 500 watts of power up to 1300 watts and class III houses with 250 watts of power up to 500 watts on waste management. The method used is survey, interview, questionnaire, ATP, WTP using Contingency Assessment Method (CVM). ATP value obtained in class II and class III is Rp. 12,701 and Rp. 6,829, and WTP value Rp. 7,492 and Rp. 3.439. Keywords: waste management, ATP, WTP, CVM
Perencanaan Sistem Instalasi Plambing Air Bersih dengan Penerapan Alat Plambing Hemat Air Di Rumah Sakit Universitas Sam Ratulangi Adeyra Khairunisa Rahayu; Yulianti Pratama; Anindito Nurprabowo
Jurnal Serambi Engineering Vol 5, No 2 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i2.1918

Abstract

The hospital is a health service building, a place of transmission of disease and allows environmental pollution and health problems. One of the prevention of disease transmission and environmental pollution, it is necessary to do repairs and improvements by using a plumbing system to have good sanitation and environmental friendly. In this case, needed to know how much water can save by method comparing between plumbing tools conventional and non-conventional standar. UNSRAT’s hospital has a population of 2,962 people who needed clean water distribution of 372,48 m3/ day. Compared by using conventional plumbing tools is 66,72 m3/hari, meanwhile non-conventional plumbing tools is 39,60 m3/hari, it shown that using non-conventional plumbing  tools standard is more saving than conventional standard, where percentage non-conventional water saving is 40,64%. Also expected that the resulting domestic wastewater will be reduced by 31,68 m3/ day. This is more important than water savings in the amount of Rp. 3.564.000 and domestic wastewater treatment costs Rp. 9.500.000.
Strategi Pengembangan Bank Sampah Sahdu Skala Kelurahan di Desa Tanimulya Kabupaten Bandung Barat Yulianti Pratama; Muhammad Rizki Kurniawan
Jurnal Serambi Engineering Vol 7, No 1 (2022): Januari 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i1.3829

Abstract

Out of four waste banks in the Tanimulya Village, Sahdu Waste Bank is the only proper waste bank in operation. Based on the 2019 West Bandung District’s Environmental Agency (Dinas Lingkungan Hidup Kebersihan) Strategic Plan, which stated the target in 2022, that it needs to reduce 10%, from the current 8% reduction of the waste generation through the solid waste management and waste bank facilites, prior to the landfill. One of the efforts that can be done is through the development of the Sahdu Waste Bank from the hamlet scale to the urban village scale by using the Waste Bank Indexing Method. Assessing the existing condition with the waste bank index, identification and compiling the recommendation towards parameters that need improvement. Based on the results of the assessment, a score of 53.2 (out of 100, and is considered as fairly good category), reveals 14 sub indicator that can be improved, which consist of 6 Sub Indicator of Management System, 6 Sub Indicator of Operational System, and 2 Sub Indicator of Waste Bank Facility. The value of the Sahdu Waste Bank can be increased to 88.3 (out of 100, and is considered as very good), which generates the reduction of 266.67% of waste, equal to 4 ton/month from 150 kg/month. That would make Sahdu Waste Bank contributes 1.6% from the reduction target of 10% for the West Bandung District waste.
Perencanaan Sistem Pengurangan Sampah Permukiman Bantaran Sungai Cidurian Kota Bandung Raka Maulana; Yulianti Pratama; Lina Apriyanti
Jurnal Serambi Engineering Vol 4: No. Edisi Khusus (Oktober 2019)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v4i2.1466

Abstract

Some areas in the city of Bandung is an area that dilitasi by the flow of the river, to prevent the introduction of garbage into the river basin is necessary to note the waste management systems in residential areas along the river. Cidurian river has a length of 24.86 Km along the river flow. Consists of the city of Bandung and Bandung regency. Administrative regions Cidurian River past eight (8) districts, from the region in the District Kiaracondong precisely Village Babakan Babakan Sari and Surabaya populous and the most densely populated. Thus, there should be community-based waste management in the form of a reduction in resources to prevent potential entry of waste into the river basin. Planning waste reduction will be divided into two, namely the reduction of inorganic waste with waste bank then the reduction of organic waste with absorption holes biopori, and bio reactor mini determination of the reduction is determined by the results of the analysis of the sampling covers the composition and garbage, then the result of the measurement characteristics test and analysis results questionnaire.
Pemilihan Daerah Pelayanan Sampah di Bandung Utara Berdasarkan Parameter Daerah Prioritas SNI-19-2454-2002 Lutfi Adhari; Yulianti Pratama; Nico Halomoan
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.v5i4.2333

Abstract

The North Bandung Service Area (WP) is a waste WP which has a service level in 2017 of 79.5%, there are still some unserved areas. Each North Bandung WP has different regional characteristics, so according to previous research, service areas were formed using the cluster analysis method to classify regions based on regional characteristics in order to support the target service level of 90%. The purpose of this planning is for the development of previous research by planning the existing priority service area waste management system as an effort to achieve the target of waste services in WP North Bandung. The selection of priority areas is based on the parameters for determining priority areas for SNI 19-2454-2002. This research is expected to solve the problem of waste management system in WP North Bandung.
Co-Authors Adeyra Khairunisa Rahayu Anindito Nurprabowo Elga Malviani Halomoan, Nico HASBULLAH, ZAMADILA ROSYIDA HERYENI, SITI S. ANGGUNISA Kancitra Pharmawati, Kancitra Lina Apriyanti Lina Apriyanti Lutfi Adhari Muhammad Rizki Kurniawan Mulyadi, Fadli Raka Maulana Salafudin - Salafudin Salafudin, Salafudin YUHANIANSYAH, NISA YUHANIANSYAH, NISA