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Ervin Nurhayati
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Department of Environmental Engineering, ITS Campuss, Sukolilo, Surabaya, Indonesia
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INDONESIA
Jurnal Purifikasi
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 14113465     EISSN : 25983806     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Environmental Science
Jurnal Purifikasi was published since January 2000 by Division of Journal Purifikasi Department of Environmental Engineering-Faculty of Civil, Environment and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya in collaboration with the Association of Indonesian Sanitary and Environmental Techniques (IATPI) East Java. Jurnal Purifikasi is published twice a year in July and December, covers topics on technology and management related to environmental engineering field.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 22 No 1 (2023): Jurnal Purifikasi" : 5 Documents clear
STUDI PENGARUH INTENSITAS ULTRAVIOLET PADA FOTOKATALIS TiO2 SEBAGAI REDUKSI NO2 DAN MIKROORGANISME DALAM SISTEM VENTILASI RUANG Suwasono, Tabah; Assomadi, Abdu Fadli
Purifikasi Vol 22 No 1 (2023): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v22.i1.441

Abstract

NO2 concentrations in vehicles or near highways are much higher than those measured on monitors in the current network. Some measurements in highway and terminal areas are reported to exceed the established quality standards although some areas of NO2 concentrations are below the quality standards but from surveys and data analysis show a risk quotient value of more than 1 indicating that it is not safe to be in the area for the next 30 years. One method to reduce NO2 concentration is titanium dioxide (TiO2) illuminated by UV, the presence of UV can be studied related to the reduction of microorganisms. The research was conducted with the study of ultraviolet intensity on TiO2 photocatalyst in reducing NO2 and UV intensity on microorganisms. The data taken is secondary data. This was followed by finding design criteria, followed by material selection. Dimensional calculations are carried out based on the material and criteria determined, then the estimated reduction efficiency on NO2 and microorganisms can be carried out and adjusted to the quality standards of PerMenKes No. 1077 of 2011. The estimation results show that the room ventilation design using an intensity of 75.8 mW/cm2 on TiO2 photocatalyst is able to reduce NO2 by at least 52.53% with an inlet concentration of 0.067 ppm. The use of an intensity of 75.8 mW/cm2 in the space ventilation design was able to reduce microorganisms with a UV D90 dose value below 238.77 J/m2. The space ventilation design is estimated to be sufficient to supply home room air under non-smoking conditions with NO2 reduction results according to the standard and close to microorganisms.
RANCANG BANGUN ALAT PEMANTAU KUALITAS UDARA DENGAN PEMANFAATAN IoT (INTERNET OF THINGS) BERBASIS MIKROKONTROLER MENGGUNAKAN SENSOR MQ-135 DAN MQ-136 PADA WILAYAH KABUPATEN PONOROGO (PARAMETER CO2 DAN SO2) Majiid, Muhammad Irfanuddin; Assomadi, Abdu Fadli
Purifikasi Vol 22 No 1 (2023): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v22.i1.444

Abstract

This study uses an Arduino Uno-based IoT air monitoring device with MQ-135 sensor and MQ-136 sensor. Arduino Uno is a microcontroller board based on ATmega328 (datasheet). It has 14 input pins of digital output where 6 of them can be used as PWM output and 6 analog input pins, 16 MHz crystal oscillator, USB connection, power jack, ICSP header, and reset button. To support the microcontroller to be used, the Arduino Uno Board is connected to a computer using a USB cable or electricity with an AC-to-DC adapter or battery to run it. The MQ-135 sensor type is one of the sensors that can detect CO2 gas levels. This sensor has low conductivity when placed in clean air. Then the MQ-136 sensor type is a sensor that has high sensitivity to SO2 gas, this sensor can also be used to detect other vapors containing sulfur gas. In both sensors there is a resistance value (Rs) that can change when exposed to gas and also a heater that is used to clean the sensor room from outside air contamination. The output of the two sensors is in the form of analog data. The ESP8266 is a Wi-Fi Smart on Chip (SoC) that is designed to be minimalist in size and uses very little external circuitry. The chip can communicate over wifi infrastructure using IPv4, TCP/IP, and HTTP protocols. The results of the MQ-135 and MQ-136 sensor readings on the microcontroller device show quite good values and also meet the existing quality standards. The MQ-135 sensor for CO2 gas readings has an average result of 314 ppm. The MQ-136 sensor for SO2 gas readings has an average value of 0.015 ppm. The working system on Android that is used uses the Blynk Apps application by making coding for LCD, LED, buzzer, and sensors that are connected to smartphones via wireless. The use of the value feature as real-time data has been able to monitor and provide air quality notifications via smartphone or email.
PERENCANAAN PENGEMBANGAN PENGOLAHAN SAMPAH ORGANIK MENGGUNAKAN BLACK SOLDIER FLY (BSF) DI TPS 3R SAWUNGGALING, KEC. TRENGGALEK, KAB. TRENGGALEK Aji Pangestu, Aditya Kurnia; Bagastyo, Arseto Yekti
Purifikasi Vol 22 No 1 (2023): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v22.i1.446

Abstract

The population growth of Trenggalek sub-district has an impact on the increase in waste generation. However, waste reduction carried out through the implementation of TPS 3R Sawunggaling with a facility area of 362.5 m2 only manages 40% - 45% of incoming waste so that development is needed. The objectives of this planning include: evaluate the existing condition of waste management; identify waste generation, density, and composition; and plan the development of organic waste processing using Black Soldier Fly in technical and financial aspects at TPS 3R Sawunggaling. Sampling activities were carried out using the load-count analysis method and obtained data on waste generation, density, and composition of TPS 3R Sawunggaling. Technically, the planning was carried out by determining the service coverage of TPS 3R Sawunggaling, analyzing mass balance, planning the addition of organic waste processing facilities by BSF, and calculating labor requirements. Financially, the feasibility of planning is determined using the Net Present Value (NPV) method by calculating investment costs, operational and maintenance costs, and potential income. Based on the evaluation results, waste management at Sawunggaling TPS 3R needs improvement in terms of waste segregation at the source, adding a fixed schedule for waste collection, and increasing compost production. The waste generation and density of Sawunggaling 3R TPS were found to be 0.67 kg/person/day and 204.91 kg/m3. The waste composition is dominated by organic waste at 83.7% while the rest is inorganic waste. By utilizing the potential of organic waste entering Sawunggaling 3R TPS, it is planned to develop organic waste processing by adding a composting method using BSF larvae. In the planning year, Sawunggaling 3R TPS serves 1,268 people with waste generation of 864.34 kg/day. Through this planning, the residue of Sawunggaling 3R TPS was reduced from 57.9% to 24.6%, thus reducing the waste that is transported to the final processing site (TPA). In managing this facility, Sawunggaling 3R TPS requires an investment cost of Rp. 34,271,157.60, an operational cost of Rp. 217,601,983.80/year, and will generate a potential income of Rp. 434,747,586.62/year. From these costs, a positive NPV value is obtained, which means that the development planning is financially feasible.
STRATEGI PENGENDALIAN NON-REVENUE WATER (NRW) MELALUI PERENCANAAN DMA DAN SCADA BERBASIS IOT DI SPAM IKK BIYONGA Zafira, Athaya Dhiya; Nurhayati, Ervin
Purifikasi Vol 22 No 1 (2023): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v22.i1.450

Abstract

PDAM (Local Drinking Water Company) Gorontalo Regency is one of many PDAM with a healthy performance rating, but the NRW (Non-Revenue Water) value is still quite high at 32.05% and has not reached FCR (Full Cost Recovery). This happens because of the lack of control over the distribution network, so a strategy that originally used a passive approach must be proactive. Proactive control begins with planning the establishment of a DMA (District Meter Area) which is then designed to become a two-way communication system with sophisticated IoT (Internet of Things)-based sensors to facilitate monitoring and controlling of distribution networks. The formation of DMA is expected to overcome the NRW problem. The service area of SPAM IKK Biyonga, Gorontalo Regency, is planned to form 5 DMAs taking into account the size of the zone, zone boundaries (administrative boundaries, river boundaries, bridges, etc.), customer connections (SR) within the zone, zone elevation, zone piping, and types of consumers within the zone. DMA 1 covers 1.616 SRs with 10 served villages, DMA 2 covers 2.620 SRs with 4 served villages, DMA 3 covers 2.400 SRs with 6 served villages, DMA 4 covers 1.930 SRs with 11 served villages, and DMA 5 covers 2.281 SRs with 12 served villages. There is also a plan to install a certain number of sensor equipment for each DMA, namely: a flow and pressure monitoring system; water quality monitoring sensors; as well as smart water meters. All sensors and tools are integrated into a single unit by the SCADA system at each location which is integrated into a centralized OMC (Operation Management Center).
ISOLASI DAN KARAKTERISASI BAKTERI PENAMBAT NITROGEN INDIGENOUS POTENSIAL SEBAGAI PUPUK HAYATI DALAM REMEDIASI LAHAN BEKAS TAMBANG BATU KAPUR Mashudi, Mashudi; Mubarik, Nisa Rachmania
Purifikasi Vol 22 No 1 (2023): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v22.i1.452

Abstract

Lahan bekas pertambangan umumnya memiliki struktur fisik dan kimia yang kurang optimum untuk pertumbuhan tanaman. Bakteri tanah indigenous dapat digunakan untuk membantu proses remediasi lahan bekas pertambangan dengan cara dimanfaaatkan sebagai pupuk hayati. Bakteri penambat nitrogen merupakan salah satu bakteri yang dapat membantu mempercepat remediasi tanah karena memiliki kemampuan memperkaya kandungan nitrogen dalam tanah. Penelitian ini bertujuan untuk mengisolasi dan melakukan karakterisasi bakteri penambat nitrogen dari tanah bekas tambang batu kapur di wilayah Cirebon, Jawa Barat. Isolasi bakteri dilakukan terhadap 13 sampel yang berasal dari area sekitar lahan bekas tambang batu kapur. Hasil isolasi diperoleh 6 isolat bakteri penambat nitrogen hidup bebas dan 2 isolat bakteri penambat nitrogen simbiosis. Seluruh isolat memiliki kemampuan menghasilkan Indole-3-acetic acid (IAA) jika ditambahkan 1 mM L-triptofan. Dua isolat dipilih (7B21Y dan 5A22) berdasarkan ciri morfologi sel dan koloni untuk dilakukan pengujian fisiologis. Aktivitas nitrogenase isolat 7B21Y dan 5A22 diukur dengan menggunakan Pengujian Reduksi Asetilen dan diperoleh masing-masing 7.09 ppm dan 5.59 ppm. Isolat 7B21Y kemudian diidentifikasi secara fisiologi menggunakan kit API dan diketahui memiliki kemiripan 99.9% dengan Rhizobium radiobacter.

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