scholarly journals Analisis Risiko Paparan Kebisingan dan Gas Hidrogen Sulfida (H2S) Terhadap Pekerja pada Proses Produksi di Job Pertamina-Talisman (Ogan Komering), Sumatera Selatan, Indonesia (Exposure Risk Analysis of Noise and Hydrogen Sulfide (H2S) Gas to Workers in Production Process at Job Pertamina-Talisman (Ogan Komering), South Sumatera)

2018 ◽  
Vol 1 (1) ◽  
pp. 26
Author(s):  
Satria Ramadhan ◽  
Endro Suswantoro ◽  
Margaretha Maria Sintorini
Keyword(s):  
Hydrogen Sulfide ◽  
Risk Analysis ◽  
Production Process ◽  
Exposure Risk ◽  
H2s Removal

<p>Tujuan dari penelitian ini adalah untuk mengidentifikasi bahaya dan menganalisis faktor risiko pada proses produksi yang mencakup paparan dari kebisingan dan kadar gas H2S. Analisis risiko paparan kebisingan dan gas H2S terhadap pekerja dilakukan pada proses produksi JOB Pertamina-Talisman (Ogan Komering), Sumatera Selatan, Indonesia. Identifikasi bahaya dilakukan dengan cara pengamatan, wawancara dan observasi pada area kerja proses produksi JOB Pertamina-Talisman (Ogan Komering) sedangkan analisis risiko faktor lingkungan dilakukan dengan menggunakan metode kuisioner dan<br /> selanjutnya dianalisis dengan jumlah responden sebanyak 80 responden yang tersebar pada area proses produksi dan sekitar area proses produksi. Hasil identifikasi resiko pekerjaan diantaranya sumber bising berasal dari kompresor, pompa-pompa, penggunaan alat berat, dan perawatan pada kompartemen alat<br /> pendukung pada proses produksi. Bahaya gas H2S berasal dari minyak bumi dan gas ikutan yang mengandung H2S. Sumber gas H2S berada di area separator, FWKO, dan H2S removal. Dari paparan<br /> kebisingan terdapat kebisingan yang paling tinggi dan melewati nilai ambang batas yang ditentukan oleh Peraturan Menteri No. 13 Tahun 2011 sedangkan temuan kadar H2S masih berada di bawah nilai ambang<br /> batas yang ditentukan oleh Peraturan Menteri Tenaga Kerja dan Transmigrasi No. 13 tahun 2011. Nilai paparan kebisingan terhadap risiko gangguan sakit kepala sebesar 1,32 kali lebih besar dan gangguan pendengaran sebesar 1,37 kali lebih besar dibandingkan dengan area pekerja yang tidak terpapar bising (<em>office room</em>) sedangkan risiko penyakit darah tinggi dan cepat lelah tidak disebabkan oleh faktor kebisingan. Nilai paparan kadar H2S tidak berpengaruh terhadap penyakit yang ada<br /> <em><strong>Kata Kunci:</strong> kebisingan, H</em><em>2</em><em>S, analisis risiko, migas, faktor resiko</em></p>

Research on the Removal Results of Hydrogen Sulfide of the Treatment of Coal Gasification Wastewater Biogas in the Anaerobic Biotrickling Filter

2012 ◽  
Vol 610-613 ◽  
pp. 2000-2005
Author(s):  
Chun Yan Xu ◽  
Hong Jun Han
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Flow Rate ◽  
Retention Time ◽  
Operating Parameters ◽  
Inlet Flow ◽  
H2s Removal ◽  
Outlet Concentration ◽  
Volume Load ◽  
Inlet Flow Rate

The uncertainty of operating parameters hinders the practical application of the biological desulfurization. To solve this problem, this study which was conducted in room temperature, pH around seven conditions, investigated the effects of the operating parameters on the hydrogen sulfide (H2S) removal performance in the biotrickling filter, including inlet H2S concentration, inlet flow rate or gas retention time, inlet volume load and circulating liquid spraying flux. The results showed that, the inlet H2S concentration should be controlled within 800mg/m3, 650mg/m3, 400mg/m3, 300mg/m3 respectively while the inlet flow rate was 150L/h, 200L/h, 250L/h, 300L/h, at those conditions, the outlet H2S concentrations were lower than 8mg/m3 and the H2S removal efficiencies were more than 98%. The optimum gas retention time was 12.37s, corresponding to the inlet flow rate of 200L/h, at this time, even if the inlet H2S concentration as high as 700mg/m3, the removal efficiency could be still more than 98%, the outlet concentration of H2S was only 13.1mg/m3. The maximum inlet volume load was 130g/(m3•h), in this condition, the outlet concentration of H2S could be controlled below 12mg/m3, the removal efficiency could above 98.4%.

scholarly journals Food safety risk analysis from the producers' perspective: prioritisation of production process stages by HACCP and TOPSIS

2018 ◽  
Vol 17 (4) ◽  
pp. 396 ◽  
Author(s):  
Antonella Certa ◽  
Mario Enea ◽  
Giacomo Maria Galante ◽  
Joaquín Izquierdo ◽  
Concetta Manuela La Fata
Keyword(s):  
Food Safety ◽  
Risk Analysis ◽  
Production Process ◽  
Safety Risk ◽  
Food Safety Risk

scholarly journals Removal of Hydrogen Sulfide in Septic Tanks for Treating Black Water via an Immobilized Media of Sulfur-Oxidizing Bacteria

2020 ◽  
Vol 17 (3) ◽  
pp. 684
Author(s):  
Jeong-Hee Kang ◽  
Hyeong-Gyu Namgung ◽  
Jeong-Il Cho ◽  
Sung Soo Yoo ◽  
Bong-Jae Lee ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Treatment Plant ◽  
Aeration Rate ◽  
H2s Removal ◽  
Septic Tanks ◽  
Black Water ◽  
Cultivation Period ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

In South Korea, the installation of septic tanks for treating black water (STBW) is regulated even in sewage treatment areas to prevent the black water deposition in combined sewers. STBWs in which black water is anaerobically decomposed generate high concentrations of hydrogen sulfide (H2S). In this study, an immobilized media of sulfur-oxidizing bacteria (SOB) was used to remove the H2S. SOB media was prepared by using activated sludge collected from a wastewater treatment plant. Prior to field application, an appropriate cultivation period and aeration rate for SOB activation were estimated through a laboratory-scale test. The SOB was activated after a 23-day cultivation period and an aeration rate of 0.25 L-water/L-air/min. Moreover, the maximum H2S removal efficiency was observed at a cultivation period of 43 days and an aeration rate of 0.38 L-water/L-air/min. Then, the SOB media was installed on STBWs of various capacities. The H2S removal efficiency was compared between with and without SOB media. The maximum H2S elimination capacity with SOB media was 12.3 g/m3/h, which was approximately three times higher than without SOB media. Furthermore, the energy efficiency and oxidation rate were also three times higher with SOB, demonstrating the applicability of SOB for H2S removal in STBW.

Occupational Exposure Risk for Swine Workers in Confined Housing Facilities

2019 ◽  
Vol 25 (1) ◽  
pp. 37-50 ◽  
Author(s):  
Alvin C. Alvarado ◽  
Bernardo Z. Predicala
Keyword(s):  
Hydrogen Sulfide ◽  
Occupational Exposure ◽  
Weighted Average ◽  
Respirable Dust ◽  
Exposure Risk ◽  
Exposure Limits ◽  
Exposure Limit ◽  
Short Term Exposure ◽  
Swine Workers ◽  
Time Weighted Average

Abstract. Extended exposure of swine barn workers to noise and airborne contaminants has been reported to be associated with various health problems. In this study, the actual exposure of workers to respirable dust, gases (ammonia and hydrogen sulfide), and noise in swine production operations was monitored in order to determine the contribution of specific activities in the barn to potential adverse health impacts to swine workers. Selected workers in a swine barn facility were outfitted with a personal monitoring system that included a respirable dust sampler, ammonia (NH3) and hydrogen sulfide (H2S) gas monitors, and a noise dosimeter as they performed their regular duties during their workday. From a total of 50 monitoring days spanning winter and summer months, results showed that the occupational exposure of swine workers to respirable dust, NH3, H2S, and noise while performing their daily assigned tasks was generally below the respective time-weighted average exposure limits for each hazard. However, a number of tasks showed high likelihood for elevated occupational exposure risk. Respirable dust concentrations exceeded the time-weighted average limit of 3 mg m-3 while feeding and weighing pigs. These activities also exceeded the short-term exposure limit (35 ppm) for NH3. Dangerous levels of H2S were generated when draining manure from manure collection pits in the production rooms. Noise levels exceeded the recommended 15 min exposure limit (100 dBA) when weighing and loading pigs for market. The occupational exposure risks for workers to barn contaminants can be reduced through measures that control the generation of contaminants at their source, by removing generated contaminants from the work environment, as well as by outfitting the workers with protective devices that prevent personal exposure to contaminants. Keywords: Ammonia, Barn worker, Dust, Hydrogen sulfide, Noise, Occupational exposure, Risk, Swine.

scholarly journals Mill Scale Addition to Reduce Hydrogen Sulfide Production in Anaerobic Digestion

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6542
Author(s):  
Byung-Kyu Ahn ◽  
Tae-Hoon Kim ◽  
Jiyun Seon ◽  
Seung-Kyun Park ◽  
Yeo-Myeong Yun
Keyword(s):  
Hydrogen Sulfide ◽  
Anaerobic Digestion ◽  
Oxygen Demand ◽  
Reducing Agent ◽  
Iron Chloride ◽  
Batch Test ◽  
H2s Removal ◽  
Mill Scale ◽  
Hydrogen Sulfide Production ◽  
H2s Production

Direct addition of sulfur-reducing agents during anaerobic digestion (AD) is very effective in controlling hydrogen sulfide (H2S) content in biogas, although one major problem is the high operational cost due to the large amount of chemicals used. The objective of this study was to remove H2S using a waste mill scale (MS) as a sulfur-reducing agent. To evaluate its feasibility, MS was added to AD fed with food waste (FW) at concentrations between 0 and 160 g MS/kg total chemical oxygen demand (TCOD) during the batch test, and the experimental results were compared to those of the batch test with the addition of iron chloride (FeCl3). Both FeCl3 and MS played an important role as electro-conductive materials in improving methane productivity by promoting direct interspecies electron transfer. An increase in H2S removal efficiency was observed with increases in both materials. In total, 30%, 60%, and 90% of H2S production based on the maximum sulfur in the form of H2S (control) was 3.7, 9.4, and 23.8 g FeCl3/kg TCOD and 13.3, 34.1, and 86.2 g MS/kg TCOD, respectively. This finding indicates that MS can be used as a sulfur-reducing agent substitute for H2S removal in AD fed with FW.

scholarly journals RISK ANALYSIS EVALUATION OF PIROXICAM 20MG CAPSULES MANUFACTURE PROCESS BY FMEA TECHNIQUE

2018 ◽  
Vol 6 (1) ◽  
pp. 19-25
Author(s):  
Priscila Cardoso ◽  
Marotta Flávia ◽  
Siqueira Kelen
Keyword(s):  
Risk Analysis ◽  
Production Process ◽  
Failure Mode ◽  
Manufacturing Process ◽  
Critical Analysis ◽  
Manufacture Process ◽  
Production Stages

This paper presents an application of FMEA (Failure Mode and Effects Analysis) on the manufacturing process of piroxicam 20mg capsules, with the objective of identifying possible failures and create subsidies for improvement of the production stages. Brainstorming or Collaborative critical analysis was used as a tool to collect information and support FMEA’s application. After the risk analysis, evaluation of the production process using FMEA, manipulation and secondary packaging were found to be the critical stages in the production process necessary for implementation of actions in order to mitigate the risks.

PS-042 Parenteral nutrition (PN) in premature infants: risk analysis after redesigning a production process

2015 ◽  
Vol 22 (Suppl 1) ◽  
pp. A153.1-A153
Author(s):  
C Salazar ◽  
M Mensa ◽  
M Miana ◽  
R Juncos ◽  
S Ceamanos ◽  
...  
Keyword(s):  
Risk Analysis ◽  
Parenteral Nutrition ◽  
Production Process ◽  
Premature Infants
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