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Ai Silmi
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FITOREMEDIASI TANAMAN ECENG GONDOK (Eichhornia crassipes) PADA VARIASI PARAMETER FOSFAT PADA LIMBAH LAUNDRY Ai Silmi; Yusriani Sapta Dewi
JURNAL TECHLINK Vol. 7 No. 01 (2023)
Publisher : FT-USNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59134/jtnk.v7i01.318

Abstract

Today liquid waste is very worrying because it easily mixes with moving water, for example in rivers. The use of detergents on a large scale is a form of environmental pollution originating from residential areas. The level of pollution will be even more dangerous if left too long. The impact that will be felt is the occurrence of pollution which is difficult to overcome and the disruption of the biota ecosystem in the waters and its surroundings. Therefore it is necessary to manage liquid waste, one of which is the phytoremediation system using the water hyacinth plant (Eichhornia crassipes). The purpose of this study was to determine the effect of water hyacinth with a phytoremediation system to reduce levels of phosphate compounds in laundry waste. The method applied is laboratory experimental which is an experiment conducted to be able to see the effect of the variables that are the object of research with a completely randomized design (CRD) for the experiment. The results obtained in this study were a decrease in phosphate levels of 0.607 mg/L (37.7%) at an interval of 12 days. Data analysis used a test of variance (ANOVA) with a significance value of 0.000, which means it is less than the sig value. < α = 0.05 that there is an influence on the variation in treatment time on the phosphate levels contained in household laundry waste.
EFEKTIVITAS PENGGUNAAN ABU SEKAM PADI (Oryza sativa) SEBAGAI ADSORBEN TERHADAP KADAR BESI ( Fe ) PADA PENGOLAHAN AIR BAKU Yusriani Sapta Dewi; Ai Silmi
JURNAL TECHLINK Vol. 7 No. 01 (2023)
Publisher : FT-USNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59134/jtnk.v7i01.320

Abstract

Clean water is a basic need for humans. Clean water that meets health requirement and is suitable for use as clean water can be determined by physical, chemical and biological water quality requirement determined by Minister of Health Regulation Number 32 of 2017 concering Environmental Health Quality Standards and Water Health Requirement for Sanitation, Swimming Pools, Solus Per Aqua and public baths which say the level of iron (Fe) in clean water is 1 mg/l. Rice husk is a by-product of the rice milling process which has been a waste that is rarely used and has the potential as an adsorbent for iron (Fe) levels. Ini this study, rice husks were prepared with two treaments without activation and with 30% NaOH activation after baing heated in a furnace at 400oC for 1 hour. The adsorbent was then tasted with groundwater containing high levels of iron (Fe) with an adsorbent weight of 5 grams, where the adsoption process was carried ot with contact time, namely 2 hours and 4 hours. The optimum adsorption process was obtained at contact time of 4 hours and with an activation treatment with average percentage of 70,644%.
ANALISIS PENGARUH BUDAYA KESELAMATAN KERJA TERHADAP KEPATUHAN PENGGUNAAN ALAT PELINDUNG DIRI (APD) PEKERJA DI BAGIAN LABORATORIUM AIR PT UNILAB PERDANA JAKARTA SELATAN Ai Silmi; Deni Kurniawan
JURNAL TECHLINK Vol. 7 No. 01 (2023)
Publisher : FT-USNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59134/jtnk.v7i01.321

Abstract

This study aims to determine and analyze the safety culture (knowledge, attitude towards regulations, personality, availability of equipment, training, and motivation) that affect the compliance with the use of Personal Protective Equipment (PPE) of workers at the Water Laboratory of PT Unilab Perdana, South Jakarta. The research method used is quantitative with an explanatory format. The population of this study were 17 workers in the water laboratory of PT Unilab Perdana, South Jakarta. The sampling technique is a saturated sample, that is, all members of the population are used as samples. The research sample was 17 workers in the water laboratory of PT Unilab Perdana, South Jakarta. The research data collection technique used a questionnaire on compliance with the use of PPE on workers as the dependent variable and knowledge, attitude towards regulations, personality, availability of equipment, training, motivation as independent variables. Data analysis used simple correlation regression, t test, and coefficient of determination. The results showed that safety culture had a positive and significant effect on compliance with the use of PPE. The results of the t-test for tcount are greater than ttable, namely 3.493 > 2.109 at = 0.05 and 2.898 at = 0.01. This means that the correlation coefficient of safety culture on compliance with the use of PPE is significant. The coefficient of determination of the influence of safety culture on compliance with the use of PPE is obtained from the R square value of 0.449. So 44.9% of the variance in safety culture can be explained by the variable of compliance with the use of PPE. From the results of hypothesis testing, the findings show that safety culture has a positive and significant effect on compliance with the use of PPE. This means, the higher the safety culture, the higher the compliance with the use of PPE. Based on these findings, it can be concluded, if you want to improve compliance with the use of PPE, then the safety culture needs to be improved as well.
Co-Authors Deni Kurniawan Yusriani Sapta Dewi