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"Penyakit Infeksi Saluran Pernapasan Akut ISPA masih menjadi penyakitterbanyak di Kota Depok. Penurunan kualitas udara ambien dan luas Ruang TerbukaHijau RTH karena pembangunan yang semakin berkembang diduga memiliki kaitandengan hal tersebut. Penelitian ini dilakukan untuk melihat trend Kualitas UdaraAmbien, RTH dan Jumlah Kasus ISPA yang terjadi di Kota Depok tahun 2013-2017serta bagaimana kaitan ketiganya dalam kualitas kesehatan lingkungan. Desainpenelitian ini adalah studi ekologi. Unit analisisnya adalah data sekunder konsentrasilima parameter kualitas udara ambien SO2, NO2, CO, Pb dan PM10 dan luas RTH dariDinas Lingkungan Hidup dan Kebersihan DLHK , serta data jumlah kasus ISPA dariDinkes Kota Depok. Analisis dilakukan secara spasial dan statistik. Hasil penelitiandisajikan dalam tabel, grafik trend dan pemetaan. Terdapat trend fluktuasi yang acakdari konsentrasi lima parameter kualitas udara dan ISPA, sedangkan RTH mengalamitrend perubahan yang teratur. Disarankan kepada pemerintah serta instansi kedinasan diKota Depok untuk merumuskan regulasi dan berbagai program untuk meningkatkankualitas kesehatan lingkungan serta menurunkan jumlah kasus ISPA di Kota Depok.

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Acute Respiratory Infection ARI disease is still the highest number of diseasein Depok City. Decline in ambient air qualityand availability of Green Open Space GOS due to the growing development is thought to be the causing factors. This studywas conducted to determine the trend of Ambient Air Quality, GOS and the number ofARI cases that occurred in Depok during 2013 2017. The research design is ecologicalstudy. The units of analysis are the secondary data of the concentration of fiveparameters of ambient air quality SO2, NO2, CO, Pb dan PM10 and GOS fromDepartment of Hygiene and Environment, and data of ARI cases from HealthDepartment in Depok. The analysis was done with spatial and statistical analysis. Resultof the analysis showed in tables, graphs and mapping. There is random fluctuative trendon theambient air parametersand ARI. Whereas there is patterned change on the GOS. Itis suggested to the city government as well as the official departments in Depok City toformulate regulations and various programs to improve the quality of environmentalhealth and reduce the number of ARI cases in Depok."

"Penyakit Infeksi Saluran Pernapasan Akut (ISPA) masih menjadi penyakit terbanyak di Kota Depok. Penurunan kualitas udara ambien dan luas Ruang Terbuka Hijau (RTH) karena pembangunan yang semakin berkembang diduga memiliki kaitan dengan hal tersebut. Penelitian ini dilakukan untuk melihat trend Kualitas Udara Ambien, RTH dan Jumlah Kasus ISPA yang terjadi di Kota Depok tahun 2013-2017 serta bagaimana kaitan ketiganya dalam kualitas kesehatan lingkungan. Desain penelitian ini adalah studi ekologi. Unit analisisnya adalah data sekunder konsentrasi lima parameter kualitas udara ambien (SO2, NO2, CO, Pb dan PM10) dan luas RTH dari Dinas Lingkungan Hidup dan Kebersihan (DLHK), serta data jumlah kasus ISPA dari Dinkes Kota Depok. Analisis dilakukan secara spasial dan statistik. Hasil penelitian disajikan dalam tabel, grafik trend dan pemetaan. Terdapat trend fluktuasi yang acak dari konsentrasi lima parameter kualitas udara dan ISPA, sedangkan RTH mengalami trend perubahan yang teratur. Disarankan kepada pemerintah serta instansi kedinasan di Kota Depok untuk merumuskan regulasi dan berbagai program untuk meningkatkan kualitas kesehatan lingkungan serta menurunkan jumlah kasus ISPA di Kota Depok.

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Acute Respiratory Infection (ARI) disease is still the highest number of disease in Depok City. Decline in ambient air qualityand availability of Green Open Space (GOS) due to the growing development is thought to be the causing factors. This study was conducted to determine the trend of Ambient Air Quality, GOS and the number of ARI cases that occurred in Depok during 2013-2017. The research design is ecological study. The units of analysis are the secondary data of the concentration of five parameters of ambient air quality (SO2, NO2, CO, Pb dan PM10) and GOS from Department of Hygiene and Environment, and data of ARI cases from Health Department in Depok. The analysis was done with spatial and statistical analysis. Result of the analysis showed in tables, graphs and mapping. There is random fluctuative trend on theambient air parametersand ARI. Whereas there is patterned change on the GOS. It is suggested to the city government as well as the official departments in Depok City to formulate regulations and various programs to improve the quality of environmental health and reduce the number of ARI cases in Depok."

"Interest in using biomass energy as an alternative to fossil fuels has advanced in recent years. This study aimed to assess the effects of torrefaction on the quality of pyrolysis products. Oil palm biomass, such as empty fruit bunches (EFB), mesocarp fiber (MF) and palm kernel shell (PKS) were either untreated (untorrefied) or torrefied (treated), and subsequently pyrolyzed. The experiment’s conditions for torrefaction were set to be a 220°C temperature, a 10°C/min heating rate, and 30 minutes holding time, and for pyrolysis they were set to a 650°C temperature, 20°C/min heating rate and 2 hours holding time. The nitrogen flow rate of 2L/min was maintained for both experiments. The results revealed that the torrefaction pretreatment improved the heating value of the torrefied biomass to 18–21 MJkg-1 from the previous value of 16–19 MJkg-1 for the untorrefied biomass. During torrefaction, the PKS showed a high solid yield of 95% due to high lignin content. The higher heating value (HHV) of the biochar and bio-oil derived from untorrefied and torrefied biomass were between 26–30 MJkg-1 and 16–17 MJkg-1 for the former, and 28–31 MJkg-1, and 17–20 MJkg-1 for the latter. The maximum HHV of 31.2 MJkg-1 was obtained from torrefied PKS biochar. The pyrolysis of torrefied biomass gave higher quality biochar and bio-oil compared to untorrefied biomass. The bio-oil acquired from the pyrolysis of the torrefied sample is less acidic and has a higher calorific value in comparison with the bio-oil obtained from the untorrefied sample. MF and PKS have demonstrated a superior outcome after torrefaction. In this way, the PKS and MF were identified as better biomass for torrefaction and pyrolysis compared to EFB."

"The aim of this study was to examine defect depths and volumes at the resin composite-dentin (R/D) interface after air polishing with different particles and spray angles. Samples were 54 dentin specimens that were formed in saucer-shaped cavities filled with resin composite. Each specimen was air polished with either sodium bicarbonate (NaHCO3) or one of two glycine (Gly) powders. The air polisher was set at angles of 90° to the interface and at 45° to the interface from both the dentin and resin composite sides. Air polishing with Gly powder produced defects with less depth and volume than NaHCO3 powder (p < 0.05). Air polishing with a spray angle of 45° to the interface from the resin composite side produced fewer defects (p < 0.05) than polishing from the dentin side. Air polishing to the R/D interface from the resin composite side produced fewer defects to the interface because the hardness of the resin composite was higher than that of dentin. "

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Pasca Tsunami Banten bulan Desember 2018 lalu, Kecamatan Sumur, Pandeglang menjadi salah satu daerah yang paling terdampak dan mengalami kerugian besar. Universitas Indonesia, dengan program UI Peduli dari DRPM UI, berinisiatif membantu membangun kembali Kecamatan Sumur, salah satunya dengan memperbaiki kualitas sanitasinya. Huntara Sumberjaya merupakan Hunian Sementara yang menampung 220 KK dari Desa Sumberjaya dan Desa Kertajaya, dan dibangun sebagai tempat tinggal darurat untuk 2 tahun. Teknologi biofilter dapat menjadi alternatif pengolahan limbah domestik yang murah dan mudah digunakan. Media bioball, blanko, dan batu karang yang digunakan pada tangki septik kapasitas 30-35 KK memiliki efisiensi penyisihan (berurut) BOD sebesar 80%-67%-60%, COD 52%-43%-48%, TSS 74,5%-57,5%-85%, amonia 60%-24%-63%, nitrit 54%-44%-64%, nitrat 51%-33%-54%, minyak dan lemak 67%-52,5%-72%, and koliform 18%-12%-11%. Sebagai validasi, digunakan uji statistik yaitu Uji Kolmogorov-Smirnov, Uji t-tailed, serta Uji One Way ANOVA. Didapatkan hasil bahwa media batu karang memiliki efisiensi penyisihan yang mirip dengan media bioball, dan memiliki penyisihan TSS yang paling baik. Kedua tangki bermedia menghasilkan efisiensi penyisihan BOD, COD, E. coli, serta minyak dan lemak yang sama dengan tangki tanpa media, namun menghasilkan efisiensi penyisihan parameter nitrogen yang lebih baik. Secara karakteristik, batu karang dapat dijadikan alternatif media biofilter yang mudah didapatkan, mudah digunakan, dan murah.

 

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Post the Banten Tsunami disaster last December 2018, Sumur sub-district, Pandeglang was one of the areas most heavily influenced and suffered enormous loss. Universitas Indonesia, supported by the Department of Research and Community Engagement’s “UI Peduli” programme, initiated to aid revitalization, with sanitation being one of the key highlights. Huntara Sumberjaya is a temporary shelter that accommodates 220 families from Sumberjaya and Kertajaya Village, within the period of 2 years. Biofiltration technology can potentially become a municipal wastewater treatment alternative, cheaper and easier to operate. Bioballs, unfiltered, and coral rocks used for the 30-35 families capacity septic tank produces a removal efficiency for (in order) BOD of 80%-67%-60%, COD 52%-43%-48%, TSS 74,5%-57,5%-85%, ammonia 60%-24%-63%, nitrite 54%-44%-64%, nitrate 51%-33%-54%, oil and grease 67%-52,5%-72%, and coliform 18%-12%-11%. To validate, Kolmogorov-Smirnov test, t-tailed test, and One Way ANOVA test were conducted. The statistical analysis proved that natural coral rocks have similar removal efficiency with the commercially used bioball, as well as having the best TSS removal efficiency. Both filtered tanks generated a higher removal efficiency than unfiltered tanks, but produced a significantly higher removal efficiency for Nitrogen parameters. Generally, dried coral rocks may serve as a biofiltration media that is easily accessible, easy to use, and cheap.

 

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