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All Journal TEKNIK Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan METANA Jurnal Ilmu Lingkungan IJHCM (International Journal of Human Capital Management) Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Jurnal Profesi Insinyur Indonesia

Nurandani Hardyanti

Environmental Engineering Department Diponegoro University

Author-ID : 275587

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Transportation

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Analisis Pengaruh Penambahan Campuran Enzim Amilase dan Selulase Terhadap Produksi Biogas Dari Limbah Sekam Padi Dengan Metode Solid State Anaerobic Digestion (SS-AD) Larasati, Dyanung; Hardyanti, Nurandani; Sumiyati, Sri; Nugraha, Winardi Dwi; Syafrudin, Syafrudin
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 3 (2020): November 2020
Publisher : Universitas Diponegoro

This research intend to analyze effect of concentrated amylase enzyme and cellulose enzyme, production rate and quality of biogas produced from rice husk waste. The rice husk was given chemical pretreatment by soaking it into NaOH 6 % for 24 hours. Then washed using water so that the pH became normal then dried under the sun before put it inside the reactor with the other enzyme, rumen and urea. The reactor that used has volume of 200ml and has total of 18 reactor with each variable has 2 reactor. Variance of concentrated enzyme that used are 9%, 12%, 15% and 18%. Biogas measurement done every 2 days for 60 days. Result from this research show that addition mixture of amylase enzyme and cellulose enzyme increase yield of biogas that produced. Because yield that produce from reactor with addition of 9%, 12%, 15%, 18% enzyme consecutively are 604 ml, 935 ml, 1041,5 ml and 2922,5 ml. whereas the reactor that not given enzyme only has biogas yield of 115 ml. the highest production rate occur on reactor that were given 18% of enzyme mixture with the production constant rate of 5,39 ml/(grTS day), maximum biogas production amount of 68,53 ml/grTS and the minimum time for biogas to formed is 0,92 days

Rancang Bangun Green Belt Untuk Pengendalian Pencemaran Debu di Kawasan Industri Terboyo (Jalan Kaligawe) Nurandani Hardyanti; Matthew Darmawan; Haryono Setiyo Huboyo
Jurnal Ilmu Lingkungan Vol 19, No 3 (2021): November 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.3.681-689

Pencemaran udara adalah masuknya atau bercampurnya unsur-unsur berbahaya ke atmosfer yang dapat menyebabkan kerusakan lingkungan, gangguan kesehatan manusia pada umumnya, dan penurunan kualitas lingkungan. Salah satu solusi untuk mengatasi masalah pencemaran udara adalah dengan merencanakan Green Belt. Green Belt atau Sabuk hijau adalah kawasan bebas bangunan atau ruang terbuka hijau di sekitar kawasan sumber pencemar yang berguna sebagai penyaring fisik pencemar udara serta aspek lain seperti estetika, fungsi peneduh dan penunjang keanekaragaman hayati. Oleh karena itu, perencanaan Green Belt menjadi penting sebagai aspek yang dapat mengendalikan tingkat pencemaran udara, khususnya pencemaran debu, pada lokasi perencanaan yang ditargetkan, khususnya Kawasan Industri Terboyo. Berdasarkan sampling yang dilakukan, angka konsentrasi debu menunjukkan angka yang cukup tinggi yaitu 801,6 mg/m3. Dengan desain Green Belt jenis pohon Acacia mampu menurunkan konsentrasi debu mulai dari efisiensi 15,84% pada tahun tanam dan meningkat pesat setiap tahunnya. Efisiensi optimal Green Belt akan tercapai pada tahun ke-2 dengan laju 71,40% dan akan mampu mencapai efisiensi maksimum pada tahun ke-5 dengan laju 87,92%. ABSTRACTAir pollution is the entry or mixing of hazardous elements into the atmosphere which can cause environmental damage, disturbances to human health in general and reduce environmental quality. One of the solutions to tackle air pollution problems is to plan a Green Belt. Green belt is a building-free zone or green open space around the pollutant source area which is useful as a physical filter for air pollutants as well as other aspects such as aesthetics, shading functions, and biodiversity support. Therefore, planning a Green Belt is important as an aspect that can control the level of air pollution, especially dust pollution, at the targeted planning location, especially Terboyo Industrial Area. Based on the sampling carried out, the dust concentration figure shows a high number, namely 801.6 mg / m3. With the Acacia tree species Green Belt design, it can reduce dust concentrations starting from an efficiency of 15.84% in the planting year and increasing rapidly each year. The optimum efficiency of the Green Belt will be achieved in the 2nd year with the rate of 71.40% and it will be able to reach the maximum efficiency in the 5th year with the rate of 87.92%.

EDUKASI PELINDUNGAN LAPISAN OZON MELALUI IDENTIFIKASI ALIRAN MASSA REFRIGERANT DAN BAHAN PENDINGIN DI KOTA SURAKARTA Bimastyaji Surya Ramadan; Nurandani Hardyanti; Titik Istirokhatun; Winardi Dwi Nugraha; Wiharyanto Oktiawan
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 3, No 1 (2021)
Publisher : Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar

Pengabdian masyarakat ini bermitra dengan Dinas Lingkungan Hidup Kota Surakarta untuk mengidentifikasi aliran massa bahan pendingin di Kota Surakarta. Tujuan dari kegiatan ini adalah untuk mengindentifikasi bahan pendingin di Kota Surakarta. Bahan pendingin berpotensi memberikan kontribusi terhadap gas rumah kaca sehingga pengetahuan mengenaik aliran massa sangat diperlukan untuk edukasi lanjutan terkait. Pengambilan sampel dilakukan pada penyedia jasa bengkel/servis AC, distributor, penjual bahan kimia dan para pengguna, terutama dari sektor non domestik. Kegiatan ini dibatasi pada inventarisasi kegiatan yang berpotensi menggunakan bahan perusak ozon, utamanyya dari massa refrigerant yang digunakan secara umum. Dari hasil survei yang telah dilakukan, dapat diketahui bahwa refrigeran yang paling banyak ditemukan di Kota Surakarta adalah R-22 dan yang paling rendah adalah MC-22 dimana bahan tersebut digunakan sebagai bahan pendingin pada AC ruangan, lemari pendingin, freezer, ixe cube dan cold roomKata kunci : bahan pendingin, refrigeran, distributor AC, Surakarta

Planning of Conventional Air Emission Reduction Strategy from the Transportation, Domestic, and Solid Waste Sector in Salatiga City Budi Prasetyo Samadikun; Nurandani Hardyanti; Dea Wijayanti; Zumrotus Sa'adah
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 2 (2022): July 2022
Publisher : Universitas Diponegoro

In 2020 Salatiga City has a population of 192,322 people with a population growth rate of 1.18%. The increase in population causes an increase in consumption needs, waste generation, and the number of vehicles due to increased population mobility. The purpose of this plan is to take an inventory of conventional air emissions in the transportation, domestic, and waste sectors and to plan strategies to reduce conventional air emissions in Salatiga City. The transportation sector emissions inventory is calculated using the Tier 2 method, while the domestic and solid waste sectors are calculated by multiplying activity data by emission factors. In the calculation of the capacity, the box model method is used and the SWOT analysis is used to determine the emission control strategy. The results of the inventory of conventional air emissions in the transportation sector for SOx are 121.06 tons/year, NOx is 2,615.51 tons/year, CO is 18,040.89 tons/year, and PM10 is 299.66 tons/year. Meanwhile for the domestic sector, SOx is 0 kg/year, NOx is 14,755.53 kg/year, CO is 4,070.86 kg/year, and PM10 is 190,326 kg/year. Then from the solid waste sector, SOx emissions were 3,653,071.85 g/year, NOx was 21,918,429.85 g/year, CO was 306,858.017.94 g/year, and PM10 was 219,184,298.53 g/year. . The results of the capacity calculation show that the City of Salatiga can still accommodate conventional air emissions for SOx, NOx, CO, and PM10. However, a reduction strategy is still needed to control air pollution. The strategic plan used is an increase in green open space by 20%, the development of an Intelligent Transportation System, emission testing of private vehicles, the substitution of LPG with biogas from organic waste and livestock manure, as well as community development for waste reduction and optimization of waste facilities.

Greenhouse Gas Emission Reduction Strategies in the Transportation and Solid Waste Sector in Cilacap Regency Nurandani Hardyanti; Budi Prasetyo Samadikun; Adinda Ragil Saputri; Adinda Putra Yuwono
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 2 (2022): July 2022
Publisher : Universitas Diponegoro

Every year, population growth in Cilacap Regency inevitably results in various impacts in various fields, including transportation and solid waste. The number of motorized vehicles in the Cilacap Regency has increased from 588,283 units in 2017 to 714,533 units in 2020. On the other hand, solid waste generation in Cilacap Regency in 2020 reached 0.22 tons per capita per year. Both activities can potentially reduce the air quality of the Cilacap Regency. One of the causes of the decline in air quality is CO2, CH4, and N2O gases, which can cause global warming. This study aims to inventory and project GHG emission loads, determine mitigation strategies and design regulations related to GHG emission reduction in the transportation and solid waste sector in Cilacap Regency. The method used to inventory GHG emissions in this research is the 2006 IPCC method with Tier 1 and Tier 2 accuracy. Then it is projected for the next ten years with a Business As Usual (BAU) scenario. To determine the selected reduction strategy using SWOT and QSPM analysis. The inventory results and projected GHG emissions in the solid waste sector in 2030 are 109.29 Gg CO2e. 4 GHG emission reduction programs in the solid waste sector could reduce up to 29.49% Gg CO2-e in 2030. Then the BAU scenario GHG emissions in the transportation sector in 2030 reached 21,417 Gg CO2e. The six proposed scenarios were able to produce a percentage of GHG reduction of 7 65% in 2030 or 1,638,409 Tons of CO2e or 1,638 Gg CO2e from 2021-to 2030 with a priority strategy for reducing GHG emissions is increasing pollution buffers by building green open space and non-motorized pathways with a reduced rate of 2%.

Removal Efficiency of Chemical Oxygen Demand on Greywater using Multi Soil Layering (MSL) Technology Syafrudin Syafrudin; Mochtar Hadiwidodo; Irawan Wisnu Wardhana; Tika Ayu Kusuma Wardani; Indah Sekar Arumdani; Sudarno Sudarno; Nurandani Hardyanti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 2 (2021): July 2021
Publisher : Universitas Diponegoro

Greywater is household waste sourced from kitchens and bathrooms, except for toilets. Around 58%-85% of greywater can be generated from the total volume of household wastewater per house. It is necessary to treat wastewater before it is discharged into water bodies to prevent the adverse effects of contaminants on the environment and human health while reducing the demand for clean water. However, due to environmentally friendly, socially sustainable, and economical treatment costs, considering that greywater is produced every day and continuously, Multi Soil Layering (MSL) technology can be an alternative to remove contaminants in water. Thus, this study aims to determine the migration of COD in greywater using MSL technology. Other parameters tested were pH and temperature by taking samples of wastewater in residential areas of Semarang City. In this study, there are two stages, namely the preliminary stage and the running stage. The MSL system will use three reactors with andosol soil, apus bamboo, and coconut shell activated charcoal as mixed soil blocks (SMB). Reactor A (activated charcoal and andosol soil), reactor B (bamboo apus and andosol soil), reactor C (andosol soil, bamboo apus, activated charcoal). The results of domestic wastewater treatment using the MSL method in each of the three reactors could remove COD by 75%, 74%, and 76%. Reactor C obtained the highest COD removal efficiency compared to other reactors.

Noise Level of Railroad Settlements JPL 05 Kaligawe Street, Semarang Haryono Setiyo Huboyo; Nurandani Hardyanti; Fera Meilasari
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 3 (2022): November 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v19i3.710-719

Noise is unwanted sound at a particular time and is sourced from any source. Data from the Pusarpedal Laboratory and the Ministry of Environment and Forestry of the Republic of Indonesia show that railroad settlements' noise in Yogyakarta, Surabaya, Semarang, and Bandung is beyond quality standards. Tambakrejo Village, Gayamsari District, Semarang, one of the railroad settlements at JPL 05 Kaligawe Street, Semarang area, close to a railroad. This research aims to know the noise level of the settlements. The sampling of noise level is done for 24 hours by measuring the noise for each time interval, with a total of 16 measuring points for 4 areas with various distances, 2.5 m, 5 m, 10 m, and 15 m. The sampling result shows that the railroad settlements have a noise level rate of 91.8 dB at a distance of 2.5 m, 89.5 dB at 5 m, 85.2 dB at 10 m, and 81.5 dB at 15 m. According to NOISE REL regulation, the maximum noise level allowed is 85.57 dB during 421 minutes or 7.02-hour of exposure. This sampling result shows that the noise levels are beyond of quality standards of both NIOSH REL and PermenLH No. 48/1996.

Organic Solid Waste Management by Producing Eco-Enzymes from Fruit Skin in Permata Tembalang Budi Prasetyo Samadikun; Sudarno Sudarno; Yustina Metanoia Pusparizkita; Nurandani Hardyanti; Fathan Syahreza Pratama; Rahayu Puji Safitri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 20, No 1 (2023): March 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v20i1.21-30

The Ministry of Environment and Forestry in 2020 estimates that waste dumps in Indonesia will be 67.8 million tons. However, organic waste management in Indonesia is still relatively low. The accumulation of organic waste in the landfill, which usually causes unpleasant odors and potentially cause an explosion due to the production of methane gas from natural decomposition processes, can be avoided by prioritizing waste management from the source. An alternative way to handle organic waste is make eco-enzymes because it is efficient, economical, and environmentally friendly. This is the focus of the community service team. The community service method is carried out in three stages, including the preparation stage, the implementation stage, and the final stage. The preparation stage consists of doing a module for sorting organic waste and its utilization (making eco-enzymes). The next phase consists of socialization, education, and training on sorting organic waste and making the right eco-enzymes. The final stage consists of evaluation and making a final report. The expected result after education, socialization, or training has been carried out by the community service team, the community members, especially RT 04 RW 05 Permata Tembalang, know better and understand the sorting and utilization of organic waste.

Safety Planning and Safety Control on Safety Performance Ardhianto Gutomo Wisnupradhono; Muhammad Agung Wibowo; Budi Prasetyo Samadikun; Nurandani Hardyanti; Silviana; Sri Sumiyati
IJHCM (International Journal of Human Capital Management) Vol 7 No 1 (2023): (IJHCM) International Journal of Human Capital Management
Publisher : Program Studi S3 Ilmu Manajemen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/IJHCM.07.01.6

This study analyzes the influence of safety planning and safety control on safety performance. This study uses primary data from a survey using a questionnaire with a Likert scale of 1 to 5. This study uses 4,950 observational data with structural equation modeling analysis. This study uses safety planning and safety control as the independent variables and safety performance as the dependent variable. The results of this study indicate that safety planning has no significant effect on safety performance. Safety controls have a direct and significant effect on safety performance. This research is the first time in Indonesia to analyze the effect of safety planning and safety control on safety performance in building construction projects.

Analisis Perbandingan Pekerjaan U-ditch Precast dan Cast In Situ Dalam Segi Waktu dan Biaya (Proyek Pembangunan Pengaman Pantai di Jakarta Tahap 4 Paket 1) Sidiq, Muhammad Fajar; Susanty, Aries; Hardyanti, Nurandani
Jurnal Profesi Insinyur Indonesia Vol 2, No 1 (2024): JPII
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2024.24115

Daerah pesisi kota Jakarta merupakan kawasan yang sering terjadi bencana banjir dari air hujan ataupun air laut (rob). Banjir rob yang terjadi di daerah utara. Untuk mengurangi resiko tersebut, maka disusun rencana induk pengamanan pantai di Jakarta. Pada proyek ini terdapat item pekerjaan saluran yang mana item pekerjaan ini juga termasuk item pekerjaan utama untuk menanggulangi air dari warga dan dibuang ke laut. Tujuan dari penelitian ini adalah untuk mengetahui durasi pekerjaan dan biaya antara 2 metode pekerjaan saluran yakni metode cast in situ dan metode beton precast. Pada saat pengerjaan proyek pengaman pantai, terdapat beberapa opsi metode pekerjaan. Salah satunya adalah pekerjaan saluran. Metode yang dipilih adalah cast in situ atau pekerjaan di tempat atau beton precast. Pemilihan metode berdasarkan biaya dan waktu pekerjaan. Pada penelitian kali ini dilakukan 2 perhitungan metode yaitu cast in situ dan precast dari segi biaya dan waktu pelaksanaan. Dengan menganalisa waktu yang didapat dari proyek didapatkan hasil penelitian untuk metode saluran cast in situ memerlukan bobot biaya sebanyak 2,27% dari nilai kontrak dengan waktu pengerjaan selama 150 hari. Sedangkan pekerjaan saluran dengan metode precast memerlukan biaya sebesar 2,47% dari biaya kontrak dengan memerlukan waktu pengerjaan selama 90 hari. Kata kunci: pengaman pantai, cast in situ, precast, saluran

Co-Authors Adinda Putra Yuwono Adinda Ragil Saputri Amri, Salim Isfayama Anik Sarminingsih, Anik Ardhianto Gutomo Wisnupradhono Aries Susanty Badrus Zaman Bagaskhara, Rezza Anferditya Budi Prasetyo Samadikun Damayanti, Poerborini Dea Wijayanti Endro Sutrisno Fathan Syahreza Pratama Fera Meilasari Haryono Setiyo Huboyo Hasfiawan, Harsya Giras Indah Sekar Arumdani Inri Natalia Inri Natalia Irawan Wisnu Wardhana Isna Maulidya Durrotunnisa Isnaini Haya Amani Larasati, Dyanung Matthew Darmawan Mochtar Hadiwidodo Muhammad Agung Wibowo Nurmeta Diana Fitri, Nurmeta Diana Rahayu Puji Safitri Ramadan, Bimastyaji Surya Rusdianto, Danang Arip Saraswati, Lutfi Sidiq, Muhammad Fajar Silviana Sri Sumiyati Sudarno Sudarno Suparni Setyowati Rahayu Syafrudin Syafrudin Syafrudin Syafrudin Tarisa Farrelia Febriana Tika Ayu Kusuma Wardani Titik Istirokhatun Wiharyanto Oktiawan Winardi Dwi Nugraha Yustina Metanoia Pusparizkita Zumrotus Sa'adah

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