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Pengaruh Ph dan Substrat terhadap Nilai Kinetika Pertumbuhan Bakteri Pseudomonas sp. dan Bacillus sp. pada Pengolahan Limbah Cair Batik Nicken Elok Arohmah; Azzahra Hanggararas Sasdika; Tuhu Agung Rachmanto; Aulia Ulfah Farahdiba
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol 14 No 2 (2022): Envirotek : Jurnal Ilmiah Teknik Lingkungan
Publisher : Program Studi Teknik Lingkungan, Universitas Pembangunan Nasional Veteran Jawa Timur

Industri batik adalah industri yang menggunakan bahan kimia berbahaya dalam proses pembuatannya, khususnya dalam proses pewarnaan. Zat warna tekstil pada umumnya terbuat dari senyawa azo dan turunannya. Zat warna tersebut larut didalam air limbah dan akan sulit didegradasi jika tidak diolah dengan benar. Salah satu pengolahan yang dapat digunakan untuk mendegradasi senyawa organik yang tinggi yaitu dengan memanfaatkan mikroorganisme. Penelitian ini bertujuan untuk mengetahui perbandingan nilai parameter kinetika pertumbuhan pada beberapa jenis mikroorganisme yang digunakan yaitu bakteri Pseudomonas sp., bakteri Bacillus sp., kombinasi Pseudomonas sp. dan Bacillus sp., serta bakteri indigeneous pada variasi konsentrasi substrat dan pH air limbah batik yang berbeda. Penelitian ini menggunakan metode lumpur aktif dengan adanya injeksi oksigen dalam reaktor. Dari penelitian ini didapatkan hasil nilai laju pertumbuhan maksimum terbesar berada pada sampel kontrol, konstanta kematian terkecil berada pada bakteri Bacillus sp dengan konsentrasi 60%, konstanta saturasi terkecil berada pada sampel kontrol, sedangkan untuk nilai hasil pertumbuhan terbesar berada pada sampel bakteri indigeneous. Bakteri yang optimal yang dapat digunakan untuk mendegredasi senyawa organik tinggi adalah bakteri indigenous.

Perencanaan Tempat Pengolahan Sampah 3R (Reduce Reuse Recycle) di Kecamatan Kesamben Kabupaten Jombang Nanda Henik Pratiwi; Yayok Suryo Purnomo; Tuhu Agung Rachmanto; Naniek Ratni Juliardi A.R
Al-Ard: Jurnal Teknik Lingkungan Vol. 8 No. 1 (2022): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v8i1.1513

The increase in the amount of waste coupled with the lack of waste management facilities, as well as the lack of knowledge and public awareness in managing waste causes the accumulation of waste to have an impact on environmental pollution. In the Kesamben sub-district, Jombang, there is no waste management facility, so people choose to do open burning, throw garbage on the side of the road, and even throw garbage directly into the river. From these problems, a TPS 3R was planned in Kesamben District. In planning the TPS 3R, population data and population projections, waste generation data, waste composition, waste generation projections and local area HSPK are required. Data collection on waste generation and composition was carried out by sampling at residents' homes. The results of the sampling obtained the weight of waste generation of 0.1393 kg/person/day with a waste volume of 0.0022 m3/person/day. The composition of the waste consists of organic waste, plastic, paper, cloth/textile, glass, Styrofoam, and diapers. With the percentage of waste composition, respectively, namely 64.55%; 19.7%; 8.49%; 1.71%; 0.41%; 0.75%; and 4.38%. From this data, a TPS 3R building is planned which can process waste up to a volume of 164.55 m3/day. Consists of a reception room, sorting room, inorganic waste storage room, plastic waste processing unit, organic waste processing unit, liquid organic fertilizer storage room, residual waste storage room, and supporting facilities. From the planning that has been done, it takes a budget plan of Rp2.052.524.176,35.

Pengaruh Kadar Fenton untuk Menurunkan Parameter COD, TSS, TDS Sampel Lindi di TPA Tuhu Agung Rachmanto; Marco Dwi Laksono
Prosiding ESEC Vol. 3 No. 1 (2022): Seminar Nasional (ESEC) 2022
Publisher : Prosiding ESEC

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Leachate waste is water seepage from buried garbage. Leachate water contains organic compounds in the form of hydrocarbons, sulfuric acid, tannic acid, humic acid, gallic acid and contains inorganic compounds in the form of sodium, potassium, magnesium, chlorine, and other heavy metal compounds that have high concentrations, so that they have the characteristics of COD (608.6 mg). /liter), TSS (5280 mg/liter), and TDS (1925 ppm) are high and dangerous for aquatic ecosystems if discharged directly into water bodies. This study aims to determine the efficiency of leachate treatment using a coagulation flocculation reactor and a photofenton reactor. This study used the Jartest method with different concentrations of Fenton's reagent. In the coagulation flocculation pretreatment using AlSO4 coagulant as much as 16 grams/liter which is able to remove COD by 52%, TSS by 70%, TDS by 50%. Furthermore, the water resulting from the coagulation of flocculation is treated by the photofenton method. In the batch system the efficiency of reducing COD, TSS, TDS obtained at the ratio of FeSO4: H2O2 (1:10) within 30 minutes was 30%, 93%, 2%. Then the best results were obtained from the batch system, followed by a continuous system which obtained the final results of the removal of COD, TSS, TDS reductions which were obtained respectively 80%, 45%, 48%. The final results of processing the COD, TSS, TDS parameters using the photofenton method were 29.09 mg/liter, 440 mg/liter, and 336 ppm respectively.

Efektivitas Porositas Biofilter Aerob untuk Mendegradasi Parameter Limbah Cair Rumah Makan dengan Menggunakan Micro Bubble Generator Tuhu Agung Rachmanto; RR. Vira Eryka Kusumaningrum
Prosiding ESEC Vol. 3 No. 1 (2022): Seminar Nasional (ESEC) 2022
Publisher : Prosiding ESEC

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The restaurant business is growing rapidly in big cities these days, increasing demand for people looking for fast and convenient dining service. Wastewater produced by untreated restaurants can cause increased levels of COD, BOD, TSS, and fatty oils in water bodies. In restaurant wastewater treatment that only uses a grease trap, it required. One of the treatments that can be applied to improve the quality of wastewater from restaurant waste processed by grease trap is by using the aerobic biofilter biological treatment process. Aerobic biofilter is a biological treatment that utilizes media as a place for microorganisms to breed and helps to degrade the pollutant load in restaurant waste in the presence of oxygen supply in the treatment. This research uses an aerobic biofilter with variations in the porosity of the media volume and the best residence time to proceed a continuous system. From this study, the optimal results obtained in thebatch system were COD 88,8%, TDS 79,5%, TSS 85,3% with a residence time of 15 days at a volume porosity of 75% bioball media. The percentage of removal in the continuous system works is stable, namely the removal efficiency of COD 88,6%, TDS 77,6%, and TSS 83,6%.

Pengaruh Volume Lalu Lintas dan Faktor Meteorologi terhadap Konsentrasi Karbon Monoksida (CO) di Udara Jalan Bypass Mojokerto Tuhu Agung Rachmanto; Slamet Wahyu Hidayat
Prosiding ESEC Vol. 3 No. 1 (2022): Seminar Nasional (ESEC) 2022
Publisher : Prosiding ESEC

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The Mojokerto Bypass Road is an arterial road that connects the surrounding cities. The road is also passed by as access to the exit of the Mojokerto – Surabaya toll road which is busy against the accumulation of motorized vehicles. This can lead to air pollution, one of which is the emission of carbon monoxide (CO) gas. The pollution causes negative effects for the community around Jalan Bypass Mojokerto in the form of shortness of breath and headaches. This study aims to determine how much the content and influence of traffic volume and meteorological factors on air pollution of Carbon Monoxide (CO) on Jalan Bypass Mojokerto There are 4 measurement points and carried out for 4 days. Analysis of the data used to determine the effect of traffic volume and meteorological factors on carbon monoxide concentrations using Simple Linear Regression with the help of Minitab software version 19. The results of the study showed that the highest concentration of carbon monoxide occurred on Thursday with a value of 9619.63 g/m³. Other results also show that the effect of traffic volume on the concentration of carbon monoxide is the greatest compared to meteorological factors, namely with a value of 11.4% and is directly proportional. This can be suppressed by reducing the use of motorized vehicles and periodic testing of motorized vehicles so that they are safe so that they are in accordance with what is determined by the regulations as well as planting trees so that carbon monoxide is easily degraded.

Kajian Siklus Daur Hidup pada Proses Produksi Industri Stainless Steel Gresik Enrico Gianpratama Latuhihin; Tuhu Agung Rachmanto
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 1 (2023): Februari 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i1.1459

“Gresik Stainless Steel Industry is one of the largest stainless steel factories in Indonesia since 1996 until now. With a sufficiently large production capacity, it is possible for the production process to produce emissions/by-products that can pollute the environment. This study approaches the production process of the Gresik Stainless Steel Industry using the Life Cycle Assessment (LCA) method. The scope of this research is gate to gate or during the stainless steel production process from the entry of materials to the release of finished products which include operating units from Coil Preparation Line Units, Coil Grinding Line Units, Mill Units, Annealing Pickling Line Units, Skinpass Units, Slitter Units , to Cut-To-Length Units. Life cycle assessment is carried out using the midpoint approach of the TRACI 2.1 method. Based on the results of the analysis, the APL unit is the operating unit that has the greatest influence on the eutrophication impact which has a total normalized value of 5025.309. This is due to the use of nitric acid as the main ingredient in the acidification process for the stainless steel production process.”

Pengaruh Ph dan Substrat terhadap Nilai Kinetika Pertumbuhan Bakteri Pseudomonas sp. dan Bacillus sp. pada Pengolahan Limbah Cair Batik Tuhu Agung Rachmanto; Aulia Ulfah Farahdiba; Azzahra Hanggararas Sasdika; Nicken Elok Arohmah
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 14 No. 2 (2022): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v14i2.256

Industri batik adalah industri yang menggunakan bahan kimia berbahaya dalam proses pembuatannya, khususnya dalam proses pewarnaan. Zat warna tekstil pada umumnya terbuat dari senyawa azo dan turunannya. Zat warna tersebut larut didalam air limbah dan akan sulit didegradasi jika tidak diolah dengan benar. Salah satu pengolahan yang dapat digunakan untuk mendegradasi senyawa organik yang tinggi yaitu dengan memanfaatkan mikroorganisme. Penelitian ini bertujuan untuk mengetahui perbandingan nilai parameter kinetika pertumbuhan pada beberapa jenis mikroorganisme yang digunakan yaitu bakteri Pseudomonas sp., bakteri Bacillus sp., kombinasi Pseudomonas sp. dan Bacillus sp., serta bakteri indigeneous pada variasi konsentrasi substrat dan pH air limbah batik yang berbeda. Penelitian ini menggunakan metode lumpur aktif dengan adanya injeksi oksigen dalam reaktor. Dari penelitian ini didapatkan hasil nilai laju pertumbuhan maksimum terbesar berada pada sampel kontrol, konstanta kematian terkecil berada pada bakteri Bacillus sp dengan konsentrasi 60%, konstanta saturasi terkecil berada pada sampel kontrol, sedangkan untuk nilai hasil pertumbuhan terbesar berada pada sampel bakteri indigeneous. Bakteri yang optimal yang dapat digunakan untuk mendegredasi senyawa organik tinggi adalah bakteri indigenous.

Potensi Produksi Gas Metana (CH4) dari Kegiatan Landfilling di TPA Bengkala Kabupaten Buleleng dengan Kombinasi Permodelan LandGEM, IPCC, dan LCA Luh Asri Ningsih Widhi Nurjaya; Tuhu Agung Rachmanto
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 15 No. 2 (2023): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v15i2.262

Permasalahan sampah semakin memburuk tiap tahun akibat pertumbuhan penduduk yang menyebabkan akumulasi sampah dan penggunaan Tempat Pembuangan Sampah (TPA) kota. Untuk mengatasi ini, penelitian menggunakan model gabungan LandGEM (Landfill Gas Emission Model), IPCC (Intergovernmental Panel on Climate Change), dan LCA (Life Cycle Assessment) di TPA Bengkala. Tujuannya adalah mengukur potensi gas metana dalam penimbunan sampah di TPA ini, karena minimnya data mengenai gas ini di lokasi tersebut. Validasi data dilakukan dengan membandingkan model LandGEM dan IPCC, sementara LCA digunakan untuk mengevaluasi dampak lingkungan dari penanganan sampah di lokasi tersebut. Hasil penelitian menunjukkan bahwa rata-rata harian sampah yang dihasilkan mencapai 1,95 liter/orang atau 0,36 kg. Densitas rata-rata sampah di TPA Bengkala adalah 185,23 kg/m3. Komposisi sampah mengindikasikan 36% berasal dari sampah taman dan hanya 2,35% dari tekstil. Emisi gas metana sekitar 3,80 Gg/tahun dalam skenario CAA-Conventional default, 1,93 Gg/tahun dalam skenario Inventory default, dan sekitar 0,99 Gg/tahun berdasarkan validasi model IPCC. Puncak produksi gas metana diperkirakan terjadi pada 2034. Dalam aspek dampak lingkungan, skenario pengelolaan sampah dengan metode sanitary landfill (skenario 0) lebih efisien dibanding opsi lain. Namun, pendekatan berkelanjutan dengan daur ulang dan pengomposan cenderung lebih baik, seperti yang ditunjukkan skenario 2, dibandingkan dengan pengolahan termal (skenario 1 dan 3).

Penurunan Nitrat Pada Air Limbah Domestik dengan Air-Lift Photobioreactor Berbasis Mikroalga Acbellita Ayu Zevhiana; Tuhu Agung Rachmanto
Jurnal Serambi Engineering Vol. 9 No. 2 (2024): April 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Domestic wastewater often contains nutrients that can potentially cause environmental problems if released into the environment without proper treatment. One of the nutrients that needs to be managed is nitrate, which can be used as a nutrient source for microalgae in an air-lift photobioreactor (AL-PBR). The aim of this study was to test the efficiency of nitrate removal from domestic wastewater using the microalgae Chlorella vulgaris and AL-PBR. The cultivation of microalgae was carried out in a culture medium containing deionised water and F2 Guillard nutrients for 7 days with full lighting and aeration. The acclimatisation phase was carried out for 7 days with a gradual addition of wastewater to prepare the microalgae for real environmental conditions. Analysis showed that pH and temperature during cultivation and acclimatisation were within safe ranges for the microalgae. The highest nitrate removal occurred with 80% wastewater treatment using blue light (λ=440 nm), achieving a removal percentage of 97.49%, indicating that wastewater concentration affects nitrate removal efficiency. These results provide importantinsights into the potential use of microalgae and AL-PBR in domestic wastewater treatment to support efforts to maintain the quality of aquatic environments.

Kinerja Pengelolaan Sampah Perkotaan di Kota Kecamatan Gresik Rizaldi Putra Pratama; Tuhu Agung Rachmanto
Jurnal Indonesia Sosial Teknologi Vol. 4 No. 01 (2023): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Garbage is a problem that needs more attention. Increasing population density and limited land to accommodate leftover consumption are one of the factors causing the volume of waste to continue to mount. This study aims to determine the performance of urban waste management in the city of Gresik sub-district. The analysis technique used in this study is a qualitative and quantitative descriptive analysis technique. The technique used to select respondents is Stratified Random Sampling technique. The data used uses primary and secondary data. The results showed that there was 281.61 m3 of waste per day, with 5.1 m3 per day coming from the non-residential sector and 21 villages/kelurahan in Gresik District. The value of the performance level of waste management in Gresik District is 56% of the average yield for each waste management variable, so that the performance level of waste management in Gresik District is quite good. Performance results are influenced by technical, institutional, financing, community and private aspects as well as laws and regulations. Factors affecting the performance of waste management include transportation operations that are not optimal as a whole, the number of personnel and infrastructure is still limited, the community does not fully support waste management and there is still a lack of enforcement against violations of waste regulations.

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