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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Kesehatan Masyarakat Jurnal Riset Kesehatan Widyariset Widyariset
Nikie Astorina Yunita Dewanti
Diponegoro University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health

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REDUCE CO ON CAR BY USING ZEOLITE MIFTAH FARHANA; Budiyono Budiyono; Nikie Astorina Yunita Dewanti; Wahyu Bambang Widayatno
Widyariset Vol 6, No 2 (2020): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.6.2.2020.107-115

Abstract

The number of vehicles in Jakarta increased by 5.66% from 2016. Vehicles have the highest contribution to air pollution, which is 70% of other activities. The purpose of this study was to determine the reduction of CO with zeolite pellets. This type of research is a quasi-experimental design with a non-equivalent control group design pre-test post-test design. The emission test instrument uses the automotive gas analyzer HESBOHN, a tachometer to measure engine speed, laptops, and stopwatches. The material used is activated natural zeolite pellets. Data were analyzed by univariate in the form of CO adsorption power efficiency, average, minimum, and maximum. The variables used are pellet drying time (3 hours and 24 hours) and engine speed (idle and 1250 rpm). The result of CO adsorption power efficiency using the most optimal zeolite pellets is Pellet I with 3 hours drying at 1250 rpm by 52%. While the lowest yield is Pellet II with 24-hour drying at idle conditions of 22%. The most effective CO emission reduction is by using Pellet I at 1250 rpm.
DETERMINANT OF PERSONAL HYGIENE BEHAVIOR OF ONLINE MOTORBIKE TAXI DRIVERS IN COVID 19 PREVENTION IN SEMARANG CENTRAL JAVA Sekar Putranti Widantari; Nur Endah Wahyuningsih; Nikie Astorina Yunita Dewanti
Jurnal Riset Kesehatan Vol 10, No 1 (2021): MAY 2021
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.169 KB) | DOI: 10.31983/jrk.v10i1.6525

Abstract

Online motorcycle taxi drivers are at risk of contracting COVID-19 because they have a high frequency of contact with other people and objects that have the possibility of SARS-CoV 2 on their surface. This study aims to determine the determinants of personal hygiene in online motorcycle taxi drivers in an effort to prevent COVID-19 in the city of Semarang, which is an analytical observational study using a cross-sectional approach. The sample in this study were 385 drivers who were in the online motorcycle taxi driver communities on Facebook and Twitter. The sampling technique uses a snowball, and the research instrument is a questionnaire distributed via google forms. Data analysis using Chi-Square Test. 89.4% of online motorcycle taxi drivers are male, 76.1% have low levels of education, 58.7% have low-income levels, 32.2% have poor knowledge, 46.2% have poor attitudes, 48.3% had poor family support, 26.2% had poor peer support, 45.2% had poor information accessibility, and 47% had poor personal hygiene behavior. There is a relationship between knowledge (p-value less than 0.001) attitude (p-value less than 0.001 ) and family support (p-value less than 0.001 ) with personal hygiene behavior. Knowledge becomes the most influential determinant of personal hygiene behavior. Providing an educational menu in the driver application can help to increase knowledge.
REDUCE CO ON CAR BY USING ZEOLITE MIFTAH FARHANA; Budiyono Budiyono; Nikie Astorina Yunita Dewanti; Wahyu Bambang Widayatno
Widyariset Vol 6, No 2 (2020): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.6.2.2020.107-115

Abstract

The number of vehicles in Jakarta increased by 5.66% from 2016. Vehicles have the highest contribution to air pollution, which is 70% of other activities. The purpose of this study was to determine the reduction of CO with zeolite pellets. This type of research is a quasi-experimental design with a non-equivalent control group design pre-test post-test design. The emission test instrument uses the automotive gas analyzer HESBOHN, a tachometer to measure engine speed, laptops, and stopwatches. The material used is activated natural zeolite pellets. Data were analyzed by univariate in the form of CO adsorption power efficiency, average, minimum, and maximum. The variables used are pellet drying time (3 hours and 24 hours) and engine speed (idle and 1250 rpm). The result of CO adsorption power efficiency using the most optimal zeolite pellets is Pellet I with 3 hours drying at 1250 rpm by 52%. While the lowest yield is Pellet II with 24-hour drying at idle conditions of 22%. The most effective CO emission reduction is by using Pellet I at 1250 rpm.
KAJIAN PENGELOLAAN SAMPAH MEDIS DI RUMAH SAKIT X CILEGON Edwina Leonita Pyopyash; Nurjazuli Nurjazuli; Nikie Astorina Yunita Dewanti
Jurnal Kesehatan Masyarakat (Undip) Vol 7, No 3 (2019): JULI
Publisher : Fakultas Kesehatan Masyarakat Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (122.739 KB) | DOI: 10.14710/jkm.v7i3.27371

Abstract

 Abstract:  Laundry Hospitals are health care facilities that are not only useful for the community, but can also be one of the causes of environmental pollution and health problems if poor waste management is carried out. Waste management in Hospital X is not optimal because the garbages are piled up and flies are seen in temporary dumps. The purpose of this research was to explains medical waste management is in Hospital X. The research tpe used was observational with a cross sectional approach. Population is policy makers and waste management officers. The samples taken were 2, namely 1 sanitarian and 1 person in charge of medical waste. The results of research from X Cilegon Hospital showed that medical waste produced was 106.79 kg/day. Based on the results of the assessment in the aspect of waste management, most of them still experience deficiencies because the process steps carried out are not in accordance with the standards set. Based on the Minister of Health Regulation number 7 of 2019 concerning Hospital Environmental Health the results of medical waste management has met the requirements because it has a value of 80% of the total score is 100%. In addition, problems that occur such as every day there is still unmanaged waste and the medical waste officer do not use personal protective equipment completely.. 
The Effectiveness of Variations in Contact Time and Density of Water Hyacinth Plants in Reducing COD Level in Tofu Industrial Wastewater Wahyu Rizki Nur Cahyani; Tri Joko; Nikie Astorina Yunita Dewanti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 3 (2021): November 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (946.187 KB) | DOI: 10.14710/presipitasi.v18i3.476-485

Abstract

Tofu industry X is one of 24 tofu industries in Bandungan, producing wastewater with a high organic matter content of 600 liters per day. The industry does not have a waste treatment plant and is directly discharged into water bodies, leading to environmental pollution. The phytoremediation method uses water hyacinth plants to be inexpensive and efficient. This study aims to see the effectiveness of water hyacinth plants in reducing COD levels in tofu wastewater. The method used quasi-experimental with a pretest-posttest control group design. The independent variables were contact time (2 and 4 days) and water hyacinth plant density (2 individuals/m2, 4 individuals/m2, and 6 individuals/m2), for the dependent variable was a decrease in COD levels tofu wastewater. 39 samples were tested and analyzed by the Kruskal Wallis test. The results showed the effectiveness of reducing COD levels by 78.68% (2 days) and 80.15% (4 days) for a density of 2 individuals/m2, 80.56% (2 days) and 86.58% (4 days) for density of 4 individuals/m2, and 83.79% (2 days) and 87.33% (4 days) for a density of 6 individuals/m2. It can be concluded that water hyacinth plants efficiently reduce COD of tofu wastewater but have not been effective in reducing COD to quality standards. There is a significant difference in reducing the COD levels of tofu wastewater using the treatment methods.
The Effect of Manganese Greensand Addition on Tray Aerator to Reduce COD Levels of Laundry’s Wastewater Naufal Adi Nugroho; Sulistiyani Sulistiyani; Nikie Astorina Yunita Dewanti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 3 (2021): November 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1089.405 KB) | DOI: 10.14710/presipitasi.v18i3.412-422

Abstract

COD level of Pojok Laundry’s wastewater did not meet the quality standard regulated in the Special Region of Yogyakarta Regulation No. 7 of 2016 (>150 mg/l) which was 442.5mg/l. This study was aimed to decrease COD levels using the tray aerator method. Manganese greensand with a diameter of 0.25 mm and a thickness of 2.4 cm/tray was also added. This type of research was a quasi-experimental with Nonequivalent Control Group Design. The sample in this study amounted to 50 samples with 5 treatments (30, 45, 60, 75, and 90 minutes), and 5 repetitions. Samples were taken from the washing machine outlet pipe. There were two groups, where the control group was only given aeration and the treatment group was given aeration with the addition of manganese greensand. Data analysis using the two-way ANOVA test showed that there was an effect of time variations on the decrease in COD levels (p<0.05), there was a difference in the average of decreased levels of COD between the control and treatment groups (p<0.05). The average decrease in COD levels after treatment with a time of 30, 45, 60, 75, and 90 minutes, respectively, was 195.7 mg/l (28.80%); 299.0 mg/l (43.63%); 372.1 mg/l (54.79%); 438.3 mg/l (64.61%); and 513.8 mg/l (75.45%). The decrease in COD levels increased with time. The conclusion of this research was that tray aerator with manganese greensand addition can reduce COD levels with the highest reduction up to 76.69% (90 minutes treatment, detergent usage: 30 g).
Co-Authors B Budiyono Edwina Leonita Pyopyash MIFTAH FARHANA Naufal Adi Nugroho Nur Endah Wahyuningsih Nurjazuli Nurjazuli Sekar Putranti Widantari Sulistiyani Sulistiyani Tri Joko Wahyu Bambang Widayatno Wahyu Rizki Nur Cahyani