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Efektivitas Tanaman Kayu Apu (Pistia stratiotes L.) dalam Menurunkan Kadar BOD5 dan COD Limbah Cair Industri Tahu Difya Rismawati; Imam Thohari; Fitri Rochmalia
Jurnal Penelitian Kesehatan SUARA FORIKES Vol 11, No 2 (2020): April 2020
Publisher : FORIKES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33846/sf11219

Difya Rismawati Jurusan Kesehatan Lingkungan, Poltekkes Kemenkes Surabaya; difyarismawati14@gmail.com (koresponden) Imam Thohari Jurusan Kesehatan Lingkungan, Poltekkes Kemenkes Surabaya Fitri Rochmalia Jurusan Kesehatan Lingkungan, Poltekkes Kemenkes Surabaya ABSTRACT Pistia stratiotes L. is one of the phytoremediator plants. Pistia stratiotes L. are able to grab the mud using their roots and produce excess nutrients that cause pollution. This absorption occurs because the substance is chelate or phythocelatin which is excreted by the root tissue of apu wood. Pistia stratiotes L. in reducing levels of BOD5 and COD in tofu industry waste. The research method used a type of pre-experimental research with one group pre-post test design. Phytoremediation media of tofu industry water was then treated for 15 days using Kayu apu (Pistia stratiotes L.), that was 14 mg/cm2, 25 mg/cm2 and 35 mg/cm2. The results of the study were analyzed analytically using One Way Anova. The most optimal plant density in reducing levels of BOD5 and COD was the density of 35 mg /cm2 with an effectiveness value of BOD5 of 80.7% equivalent to 41.05 mg /l and COD of 82.02% equivalent to 91.74 mg /l. Industrial owners can use woody plants as phytoremediator agents to reduce levels of BOD5 and COD pollutants. Keywords: density; Pistia stratiotes L.; tofu industry waste ABSTRAK Kayu apu (Pistia stratiotes L.) adalah salah satu tumbuhan fitoremediator Tanaman kayu apu mampu mencengkeram lumpur dengan berkas akarnya dan menyerap kelebihan zat hara yang menyebabkan pencemaran. Penyerapan ini terjadi karena zat khelat atau phythocelatin yang diekskresikan oleh jaringan akar kayu apu. Penelitian ini bertujuan untuk mengetahui efektivitas tanaman kayu apu (Pistia stratiotes L.) dalam menurunkan kadar BOD5 dan COD pada limbah industri tahu. Penelitian ini menggunakan jenis penelitian pre-experimental dengan rancangan penelitian One Group Pre-Post Test Design. Media fitoremediasi berupa limbah cair industri tahu kemudian dilakukan treatment selama 15 hari menggunakan tanaman kayu apu (Pistia stratiotes L.) yaitu 14 mg/ cm2, 25 mg/cm2 dan 35 mg/cm2. Hasil penelitian dilakukan analisis data secara analitik menggunakan uji beda (One Way Anova). Kerapatan tanaman yang paling optimal dalam menurunkan kadar BOD5 dan COD yaitu kerapatan 35 mg/cm2 dengan nilai efektivitas BOD5 sebesar 80,7 % setara dengan 41,05 mg/l dan COD sebesar 82,02 % setara dengan 91,74 mg/l. Pemilik industri tahu dapat memanfaatkan tanaman kayu apu sebagai agen fitoremediator untuk menurunkan kadar pencemar BOD5 dan COD. Kata kunci: kerapatan; Pistia stratiotes L.; limbah cair industri tahu

Pengaruh Fitoremediasi Tanaman Melati Air (Echinodorus palaefolius) Terhadap Penurunan Kadar Fosfat Pada Limbah Laundry Intania Dwi Mayang Sari; Iva Rustanti Eri W; Imam Thohari
Jurnal Penelitian Kesehatan SUARA FORIKES Vol 12, No 1 (2021): Januari
Publisher : FORIKES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33846/sf12103

Water pollution can be reduced, one of which is using phytoremediation techniques. The purpose of this study was to analyze the phytoremediation ability of water jasmine to reduce phosphate levels in laundry waste. This research was an experimental study with a one group pretest-posttest design. Water jasmine plants consisted of 1 month of age (A), 1-2 months of age (B), and 2 months of age (C). The data that had been obtained, then analyzed by the Anova test. The results showed a decrease in the phosphate levels of laundry waste. Before being treated, the phosphate level was 83.82 mg / l. The highest reduction in phosphate levels was in water jasmine plants aged 2 months, C2 replication. The decreased levels of phosphate were: 79.76 mg / l (95.15%) on day 7, 82.37 mg / l (98.27%) on day 11, and 82.9 mg / l (98,9%) on day 14. The higher the age of water jasmine plants, the greater the ability to reduce phosphate levels of laundry waste. The longer the phytoremediation time, the greater the decrease in phosphate levels. Keywords: laundry liquid waste; water jasmine; phytoremediation ABSTRAK Pencemaran air dapat dikurangi, salah satunya adalah menggunakan teknik fitoremediasi. Tujuan penelitian ini adalah menganalisis kemampuan fitoremediasi tanaman melati air untuk menurunkan kadar fosfat limbah laundry. Penelitian ini merupakan penelitian eksperimental dengan rancangan One group Pretest-postest. Tanaman melati air terdiri atas umur 1 bulan (A), umur 1-2 bulan (B), dan umur 2 bulan (C). Data yang telah didapatkan, selanjutnya dianalisis dengan uji Anova. Hasil penelitian menujukkan adanya penurunan kadar fosfat limbah laundry. Sebelum diberi perlakuan, kadar fosfat adalah 83,82 mg/l. Penurunan kadar fosfat tertinggi yaitu pada tanaman melati air berumur 2 bulan, replikasi C2. Penurunan kadar fosfat adalah: 79,76 mg/l (95,15%) pada hari ke-7, 82,37 mg/l (98,27%) pada hari ke-11, dan 82,9 mg/l (98,9%) pada hari ke 14. Semakin tinggi umur tanaman melati air, maka semakin besar kemampuan dalam menurunkan kadar fosfat limbah laundry. Semakin lama waktu fitoremediasi, semakin besar pula penurunan kadar fosfat. Kata kunci: limbah cair laundry; melati air; fitoremediasi

PERBEDAAN KETEBALAN FILTER ARANG AKTIF AMPAS KOPI DALAM MENURUNKAN KADAR BESI (Fe) PADA AIR BERSIH Yuliana Sarasati; Imam Thohari; Bambang Sunarko
Jurnal Penelitian Kesehatan SUARA FORIKES Vol 9, No 4 (2018): Oktober 2018
Publisher : FORIKES

Karbon ampas kopi sebagai bahan baku pembuatan arang aktif dapat meminimalisir dampak timbunan ampas kopi. Penelitian ini bertujuan mengetahui kemampuan berbagai ketebalan filter arang aktif ampas kopi dalam menurunkan kadar Fe pada air bersih, menggunakan Pretest-Posttest with Control Group Design, dengan obyek larutan besi dari garam FeCl3 dialirkan ke filter arang aktif ampas kopi berukuran 4060 mesh dengan ketebalan 40 cm, 60 cm dan 80 cm pada kelompok perlakuan. Pada kelompok kontrol tidak dialirkan dalam filter arang aktif ampas kopi. Arang aktif yang dikarbonisasi pada suhu 500oC selama 20 menit dan diaktivasi dengan HCl 0,5 M selama 48 jam, memiliki kadar air (0,21%), kadar abu (0,11%) dan daya serap terhadap iodium (874,80 mg/g). Filter arang aktif ampas kopi menurunkan Fe awal dari 8,5 mg/l menjadi 6,02 mg/l pada ketebalan 40 cm (efektifitas penurunan 29,18%); 1,21 mg/l pada ketebalan 60 cm (efektifitas penurunan 85,76%); dan 1,04 mg/l pada ketebalan 80 cm (efektifitas peenurunan 87,76%). Diketahui bahwa filter dengan ketebalan 80 cm memberikan pengaruh paling signifikan terhadap rata-rata kadar besi yang dihasilkan. Kesimpulan dalam penelitian ini adalah mutu arang aktif ampas kopi telah memenuhi SNI No. 063730-1995. Ketebalan 80 cm merupakan tingkat ketebalan filter yang paling optimal dalam menurunkan kadar besi. Perlu dilakukan penelitian lebih lanjut dalam rangka pengembangan penelitian seperti penggunaan jenis ampas kopi yang lebih spesifik sebagai bahan pembuatan arang aktif, peningkatan suhu karbonisasi dan konsentrasi aktivator. Kata kunci: Ampas kopi, arang aktif, kadar besi dalam air bersih

Efektifitas Mereduksi Sampah Organik dalam Biopori (Studi di Desa Sekargadung Kecamatan Dukun Kabupaten Gresik Tahun 2018) Ema Restanti; Imam Thohari; Rachmaniyah Rachmaniyah
Jurnal Penelitian Kesehatan SUARA FORIKES Vol 10, No 3 (2019): Juli 2019
Publisher : FORIKES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33846/sf10302

Reduction and handling of trash needs to be done on household waste and household-like garbage, namely garbage that comes from the daily activities of households, public facilities and other facilities. One type of waste handling is composting with appropriate technology, namely biopori, so that it can change the characteristics, composition and amount of waste. The purpose of this study is to know the effectiveness of reducing the quantity of organic waste in biopori. This research was an experimental research - One Group Pretest Posttest Design. Data collection was done by direct observation and measurement. The study was carried out by replication in 2 biopore treatments based on soil texture. The number of replications used was 16 sample houses in each biopore treatment. The data obtained were then analyzed using a different test of Paired t Test on the computer program. The results showed that Sekargadung Village had 2 different soil textures, namely sandy clay texture and clayy clay texture. The calculation of the average quantity of organic waste produced was 4.4 kg / house in a week and the compost produced in each biopore was 2.2 kg a week on average. The results of the analysis of the quality of compost produced showed that there was no difference in the quality of compost produced in the biopori in the texture of sandy clay and clay. While the results of the analysis of the effectiveness of reducing the quantity of organic waste in biopore indicate that biopore is effective in reducing the quantity of organic waste in Sekargadung Village, Dukun Subdistrict, Gresik District. It is recommended that biopore be developed in Sekargadung Village as an alternative effort to manage organic waste. The larger the diameter of the biopore, the more organic waste can be managed, and the biopore hole should be given a PVC / pipe layer so as not to slide easily. Keywords: organic waste; biopore; compost ABSTRAK Pengurangan dan penanganan sampah perlu dilakukan terhadap sampah rumah tangga dan sampah sejenis sampah rumah tangga yaitusampah yang berasal dari kegiatan sehari-hari rumah tangga, fasilitas umum dan fasilitas lainnya. Penanganan sampah jenis ini salah satunya dengan pengomposan dengan teknologi tepat guna yaitu biopori, sehingga dapat merubah karakteristik, komposisi dan jumlah sampah. Tujuan penelitian ini untuk mengetahui efektifitas mereduksi kuantitas sampah organik dalam biopori. Penelitian ini merupakan penelitian eksperimental-One Group Pretest Posttest Design. Pengumpulan data dilakukan dengan observasi dan pengukuran langsung. Penelitian dilakukan dengan replikasi pada 2 perlakuan biopori berdasarkan tekstur tanah. Jumlah replikasi yang digunakan sebanyak 16 rumah sampel pada tiap perlakuan biopori. Data yang diperoleh selanjutnya dianalisis menggunakan uji beda Paired t Test pada program kompoter. Hasil penelitian menunjukkan Desa Sekargadung mempunyai 2 tekstur tanah yang berbeda, yaitu tekstur liat berpasir dan tekstur lempung berliat. Hasil perhitungan kuantitas rata-rata sampah organik yang dihasilkan adalah 4,4 kg/rumah dalam seminggu da kompos yang dihasilkan pada setiap biopori rata-rata sebanyak 2,2 kg dalam seminggu. Hasil analisis kualitas kompos yang dihasilkan menunjukkan bahwa tidak ada perbedaan kualitas kompos yang dihasilkan di dalam biopori pada tekstur tanah liat berpasir dan tanah lempung berliat. Sedangkan hasil analisis efektifitas mereduksi kuantitas sampah organik dalam biopori menunjukkan bahwa biopori efektif dalam mereduksi kuantitas sampah organik di Desa Sekargadung Kecamatan Dukun Kabupaten Gresik. Disarankan biopori dikembangkan di Desa Sekargadung sebagai upaya alternatif pengelolaan sampah organik. Semakin besar diameter biopori akan semakin banyak sampah organik yang dapat dikelola, dan lubang biopori sebaiknya diberi lapisan pipa PVC/Paralonagar tidak mudah longsor. Kata kunci: sampah organik; biopori; kompos

Faktor yang Berhubungan dengan Angka Kuman Udara di Rumah Sakit Soemitro Surabaya Queeniza Ulya Yonata; Imam Thohari; Marlik Marlik
Jurnal Penelitian Kesehatan SUARA FORIKES Vol 11, No 3 (2020): Juli 2020
Publisher : FORIKES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33846/sf11308

Microbiological examination of the floor swab in one of the inpatient rooms of Soemitro Air Force Hospital found that the number of microbactery on the floor was 10 colonies. These results indicate that the floor in the inpatient room is indicated to be the growth of microorganisms. The purpose of this study was to determine the factors associated with airborne microbactery counts at Soemitro Air Force Hospital in Surabaya.This research was using analytic observational. The population in this study were all rooms in Soemitro Air Force Hospital totaling 47 rooms and 38 rooms were sampled which were divided into 4 (four) Risk Zones (Low, Medium, High and Very High Risk). Sampling technique was done by Stratified Random Sampling. Data analysis using Pearson Product Moment Test. The results showed the average number of airborne microbacterial in Soemitro Air Force Hospital was 52.8 CFU/m3. The temperature was 30.8oC with a humidity of 61.8%. Lighting averaged 83.6 Lux. The results of the observation of sanitation assessment and space maintenance were 88.8% and 77.7% respectively. The Pearson Product Moment Test states that there was a relationship between temperature, humidity, lighting, room sanitation and room maintenance with airborne germ counts at Soemitro Air Force Hospital. Soemitro Air Force Hospital was expected to carry out proper maintenance and sanitation of space to prevent the growth of microbacterial both in the air and on the surface of objects in the room. Lighting, humidity and temperature in the room needed to be measured regularly (3 months) to determine compliance with quality standards so as to prevent the growth of germs. Keywords: air microbacterial number; hospital ABSTRAK Pemeriksaan mikrobiologi usap lantai di salah satu ruang rawat inap Rumah Sakit TNI AU Soemitro menemukan angka kuman lantai sejumlah 10 jumlah koloni. Hasil tersebut menunjukkan bahwa lantai di ruang rawat inap terindikasi menjadi pertumbuhan mikroorganisme. Tujuan dari penelitian ini adalah untuk mengetahui faktor yang berhubungan dengan angka kuman udara di Rumah Sakit TNI AU Soemitro Surabaya. Penelitian ini termasuk jenis penelitian observasional analitik. Populasi dalam penelitian ini adalah seluruh ruangan di Rumah Sakit TNI AU Soemitro berjumlah 47 ruang dan diambil sampel sebanyak 38 ruangan yang terbagi menjadi 4 (empat) Zona Risiko (Risiko Rendah, Sedang, Tinggi dan Sangat Tinggi). Tenik pengambilan sampel dilakukan dengan Stratified Random Sampling. Analisis data menggunakan Uji Pearson Product Moment. Hasil penelitian menunjukkan rata-rata angka kuman udara di Rumah Sakit TNI AU Soemitro sejumlah 52,8 CFU/m3. Suhu udara sejumlah 30,8oC dengan kelembaban 61,8%. Pencahayaan rata-rata sebesar 83,6 Lux. Hasil observasi penilaian sanitasi dan pemeliharaan ruang masing sejumlah 88,8% dan 77,7%. Uji Pearson Product Moment menyatakan ada hubungan suhu, kelembaban, pencahayaan, sanitasi ruang dan pemeliharaan ruang dengan angka kuman udara di Rumah Sakit TNI AU Soemitro. Rumah Sakit TNI AU Soemitro diharapkan dapat melakukan pemeliharaan dan sanitasi ruang yang tepat untuk mencegah adanya pertumbuhan kuman baik di udara maupun di permukaan benda-benda di ruangan. Pencahayaan, kelembaban dan suhu di dalam ruangan perlu diukur secara berkala (3 bulan sekali) untuk mengetahui kesesuaian dengan baku mutu sehingga dapat mencegah pertumbuhan kuman Kata kunci: angka kuman udara; rumah sakit.

The Effect of Characteristics and Fatigue of Labor Performance in Shipbuilding Production Room Demes Nurmayanti; Tahniah Rofidatul Jannah; Imam Thohari; Awadhesh Chandramauli
Jurnal Teknokes Vol 15 No 1 (2022): March
Publisher : Jurusan Teknik Elektromedik, POLTEKKES KEMENKES Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/teknokes.v15i1.6

This shipbuilding company is a pioneer company in Indonesia that produces various types of ships supported by technology from Australia (Computer Design Marine). Risky company activities can work fatigue, so companies need to pay attention to the health and safety of workers. In general, work fatigue is a condition that can occur in workers, where workers experience problems both physically and spiritually after work. Work fatigue is a factor that affects the work where fatigue can directly affect the performance of workers. The purpose of this research is to analyze the effect of characteristics and fatigue on the performance of workers. This study used an analytic research method with a p-type approach cross-sectional. Data was collected using interviews. Sampling is using the Simple Random Sampling method with 64 samples which are conducted to the workers in the shipbuilding production room. To determine the effect between two variables, this research used Chi-Square test analysis. The results showed that age (P=0.038), years of service (P=0.041), and fatigue (P=0.000) affected the performance of workers in the shipbuilding production room, while education level (P=1,000) didn’t affect labor performance in the shipbuilding production room. It is recommended for shipbuilding companies to provide training and rewards (for example by giving compensation) to workers so that they will be more enthusiastic in their work activities and it is necessary to provide light sports coaching activities so that the functioning of body organs is helped them to become stronger and not easily tired.

The Design of Medical Waste Treatment in Public Health Center (MWT-P) for Reducing Total Bacteria Count in Banjarbaru M. Irfa'i; Arifin Arifin; Ferry Kriswandana; Imam Thohari
JURNAL KESEHATAN LINGKUNGAN Vol. 12 No. 4 (2020): JURNAL KESEHATAN LINGKUNGAN
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkl.v12i4.2020.254-261

Introduction: The increase in medical waste in health service facilities in Indonesia is linearly consistent. The quantity of medical waste that causes a complex problem is a high cost of processing clinical waste. Legislation requires medical or clinical waste to be processed not to cause nosocomial and other environmental pollution. Medical or clinical waste treatment requires excessive technology and very high processing expenses. Processing medical waste requires innovation in processing medical waste to be applied easily in health care facilities (Public Health Center). Method: This research was conducted by simulating variations in the stages of processing medical waste used to be the Experiment Pre and Post Test only without Control Group design. Simulation variations used include contact time Chlorine (5 minutes, 10 minutes) and Chlorine Dose Variation (25 ppm, 50 ppm). This research was conducted in the Public Health Center of the City of Banjarbaru in 2018. Result and Discussion: The content of bacteriological numbers in medical waste before processing is, on average, 1,973 MPN / 100 ml; after being treated with MWT-P, the bacteria is reduced to 4 MPN/100 ml. The content of the liquid waste bacterial number of the final processing decreases to 0 MPN/100 ml. Conclusion: The study results concluded that the use of MWT-P decreases the quantity of medic or clinical waste microorganisms or bacteria. The final waste processing with MWT-P resulted in the number of medical waste bacteria in the treatment reaching zero. MWT-P is a low cost and easy to perform medical or clinical waste management tool. MWT-P is a stage of the B3 waste management framework, especially medical waste, in health care facilities.

Hubungan Sarana Sanitasi Dasar dengan Kejadian Stunting di Puseksmas Loceret, Nganjuk Eka Alicia Fibrianti; Imam Thohari; Marlik Marlik
Jurnal Kesehatan Vol 14 No 2 (2021): Jurnal Kesehatan
Publisher : UPPM Poltekkes Kemenkes Ternate

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32763/juke.v14i2.339

Latar Belakang: Stunting merupakan masalah gizi kronik yang mengakibatkan gagal tumbuh pada anak. Salah satu faktor utama penyebab kejadian stunting adalah sarana sanitasi dasar yang dapat mempengaruhi asupan gizi pada anak karena asupan gizi harus didukung dengan dengan hygiene sanitasi dan kondisi lingkungan yang memadai. Tujuan : penelitian ini bertujuan untuk mengetahui hubungan sanitasi dasar dengan kejadian stunting diwilayah kerja Puskesmas Loceret Kabupaten Nganjuk. Metode: Metode yang digunakan bersifat observasional dengan pendekatan analitik dan desaincase control. Sampel penelitian adalah balita di Puskesmas Loceret berjumlah 98 sampel. Observasi sarana sanitasi dasar rumah dilakukan dengan menggunakan instrumen dan dianalisis menggunakan uji chi-square. Hasil : Hasil penelitian dari 98 sampel diteliti bahwa71,4% sarana penyediaan air bersih, 48% sarana jamban, 15,3% sarana pengelolaan air limbah, 30,6% sarana pengelolaan sampah, 29,6% sarana pengelolaan makanan dan 42,9% sarana sanitasi dasar adalahmemenuhi syarat.Berdasarkan uji statistik,didapatkan hasil bahwa sarana penyediaan air bersih (p=0,180) dan sarana pengelolaan air limbah tidak signifikan (p=0,161). Sarana jamban (p=0,026), sarana pengelolaan sampah (p=0,028), sarana pengelolaan makanan (p=0,000) dan sarana sanitasi dasar signifikan (p=0,001). Kesimpulan :Hasil uji statistik menunjukkan bahwaada hubungan sarana sanitasi dasardengan kejadian stunting.

KONDISI FISIK RUMAH (JENIS DINDING, JENIS LANTAI, PENCAHAYAAN, KELEMBABAN, VENTILASI, SUHU, DAN KEPADATAN HUNIAN) MEMPENGARUHI KEJADIAN PENYAKIT TUBERKULOSIS DI WILAYAH KERJA PUSKESMAS KRIAN SIDOARJO TAHUN 2021 Adinda Mega Putri; Imam Thohari; Ernita Sari
GEMA LINGKUNGAN KESEHATAN Vol 20, No 1 (2022): GEMA Lingkungan Kesehatan
Publisher : Poltekkes Kemenkes Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36568/kesling.v20i1.1670

Pulmonary Tuberculosis is a direct infectious disease caused by TB bacteria (Mycobacterium tuberculosis). In the Krian Health Center Work Area, the number of pulmonary TB patients has increased every year. Based on the profile of the Krian Health Center, Tuberculosis data for the last 3 years in 2017 - 2019 has increased with a percentage of 15% - 56.5% of cases. The purpose of the study was to analyze the relationship between the physical condition of the house and the incidence of pulmonary tuberculosis (TB) in the working area of the Krian Health Center in 2021.This type of research is analytic with a case control approach. Collecting data using observation sheets. The research variable is the physical condition of the house including the types of walls, floors, lighting, humidity, ventilation, temperature and density of residential dwellings with a total sample of 47 patients and 47 non-patients using purposive sampling method. The data were analyzed using the chi-square test to determine the relationship.The value of the test results from the chi square of X2 statistical test results obtained p value = 0.037, then Ha is rejected. It can be concluded that the respondent's house category is related to the incidence of pulmonary TB disease but the odd ratio calculation is obtained a value of 2,424 (CI: 1,047 – 5,611), so respondents who have a house category are quite at risk of pulmonary TB disease 2,424 times greater than respondents with a house category that is good.It is recommended for health workers to increase their role as motivators and counselors for the community in order to increase knowledge about the importance of the physical condition of houses that meet the requirements for health by scheduling periodic counseling about healthy homes.

EFEKTIVITAS PROGRAM CAR FREE DAY TERHADAP PENURUNAN KADAR NOx UDARA DI SURABAYA TAHUN 2017 Rachmaniyah Rachmaniyah; Imam Thohari
GLOBAL HEALTH SCIENCE Vol 2, No 4 (2017): Desember 2017
Publisher : Communication and Social Dinamics (CSD)

Motor vehicles contribute greatly to air pollution. The number of motor vehicles in Surabaya reached 1,827,806 units in 2010 while the increase of motor vehicles per year reached 30%. Surabaya City Government launched Car Free Day program with the aim to reduce and control exhaust emissions from motor vehicles. The purpose of this research is to find out the effectiveness of Car Free Day program to decrease NOx content in air. This research is descriptive with cross sectional approach. The data were collected by observation, field parameter measurement and NOx measurement at Car Free Day and Non Car Free Day (NCFD) at Kertajaya Street and Raya Darmo Street Surabaya. The data were then presented in the tabulation and were analyzed in descriptive form. The results of the average NOx concentration on Kertajaya Street at the time of CFD were 266.4 μg / Nm3 and at the time of NCFD was 409 μg / Nm3. Average NOx concentration on Raya Darmo Street at CFD was 298.4 μg / Nm3 and at the time of NCFD was 431,76 μg / Nm3. According to PP No.41 of 1999, it is stated that the rate of NOx in 1 hour measurement is 400 μg / Nm3. The decrease percentage of NOx concentration in Kertajaya Street was 34.86% and on Raya Darmo Street was 30,88%. Car Free Day program is not effective in lowering air NOx levels in Kertajaya Street and Raya Darmo Street Surabaya. It is recommended that the Surabaya City Government can add some point of the road as well as the addition of days for Car Free Day activities. Keywords: Efectiveness, Car free day, Pollutants NOx

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