Sri Slamet Mulyati, Sri Slamet
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Analisis Kualitas Batu-bata Bersumber Bahan Tambahan Sampah Serbuk Gergaji dalam Berbagai Variasi Berat Mulyati, Sri Slamet; Pujiono, Pujiono; Prijanto, Teguh Budi; Fikri, Elanda
Jurnal Kesehatan Lingkungan Indonesia Vol 16, No 2 (2017): Oktober 2017
Publisher : Master Program of Environmental Health, Faculty of Public Health, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkli.16.2.46-50

Abstract

Latar belakang: Serbuk gergaji kayu merupakan salah satu sumber sampah organik yang belum banyak dimanfaatkan. Keberadaannya tidak jauh di sekitar kita, relatif murah dan mudah mendapatkannya. Di beberapa negara luar seperti Uganda, Algeria, India dan lain-lain memanfaatkan serbuk gergaji ini untuk berbagai keperluan diantaranya sebagai bahan campuran batu-bata, pembentuk polimer selulosa nitrat, dan bahan adsorben polutan organik phenol. Penelitian sebelumnya memanfaatkan serbuk gergaji sebagai bahan tambahan campuran batu-bata (kaolin, tanah liat, serbuk gergaji) dengan rasio 90:70:40.Metode: Penelitian ini merupakan eksperimen semu. Selanjutnya penulis tertarik untuk mengembangkan penelitian tersebut, untuk serbuk gergaji dibuat variasi berat bahannya, sementara yang lainnya tetap. Ukuran batu-bata dirancang berukuran 10,00 x 5,00 x 2,00 cm. Untuk mengetahui kualitas batu-bata yang dihasilkan, penulis melakukan analisis kualitas terhadap batu-bata yang dihasilkan dengan berbagai variasi berat tersebut. Kualitas yang diuji baru pada tahapan daya serap air dan kandungan garam. Selain uji kualitas batu-bata juga dilakukan analisis valuasi ekonominya. Penelitian ini dilakukan pada skala laboratorium dengan harapan dapat dijadikan bahan acuan apabila akan diaplikasikan di lapangan.Hasil: Hasil penelitian menunjukkan bahwa variasi berat serbuk gergaji antara rasio 20:70:90 dan 40:70:90 menunjukkan ada perbedaan peringkat rata-rata yang bermakna dalam hal daya serap batu-bata terhadap air begitu juga antara rasio 20:70:90 dan 60:70:90. Semua campuran batu-bata berdaya serap > 20%, belum memenuhi standar kualitas berdasarkan SNI 15-2094-2000, namun semua campuran batu-bata mempunyai kadar garam  (NaCl) < 50%, ini artinya sudah memenuhi standar kualitas berdasarkan SNI 15-2094-2000.Simpulan: Waktu pembakaran batu-bata dengan bahan tambahan serbuk gergaji lebih efisien 0,42 kalidibandingkan tanpa serbuk gergaji sehingga biaya lebih hemat. Abstract Title: Quality Analysis Brick Sourced Sawdust in a Variety of WeightBackground:Sawdust as organic waste has not been widely used. Its presence close to us, cheap and easy to obtain. In others countries such as Uganda, Algeria, India and others, utilize sawdust for various purposes, such as mixed materials, forming polymers cellullose nitrate, and phenol pollutant adsorbent. Previous research utilizes sawdust as mixture of brick with a ratio of 90:70:40: (kaolin, clay,sawdust).Method:This was a quasi experiment design.Furthermore, authors interested in developing such research, sawdust made weight variation while others remain. Size bricks are designed measuring 10.00 x 5.00 x 2.00 cm. To determine the quality of bricks produced, the authors analyze the quality of the bricks produced with a variety of weight of the sawdust. The quality of the tested new stage of absorption of water and salt content. In addition to testing the quality of bricks also performed a valuation analysis of its economy. This research was carried out on a laboratory scale with the hope can be used as a reference if it will be applied in the field. Result:The results showed that weight variation sawdust between 20:70:90 and 40:70:90 ratio showed no difference in the average rating is meaningful in terms of absorption bricks to water as well as the ratio of 20:70:90 and 60 : 70: 90. All blends brick absorbent> 20%, yet meet the standards of quality based on SNI 15-2094-2000, but all of a mixture of brick had higher levels of salt (NaCl) <50%, this means that it meets quality standards based on SNI 15-2094 -2000. Conclusion:Burning of bricks made from sawdust additional more efficient, ± 0.42 times from the time of burning bricks without straw, making it more cost-effective 
Analisis Risiko Paparan Debu Kapas Terhadap Kejadian Bisinosis di Industri Tekstil PT. Grandtex Bandung Mulyati, Sri Slamet; Setiani, Onny; Raharjo, Mursid
Jurnal Kesehatan Lingkungan Indonesia Vol 14, No 2 (2015): Oktober 2015
Publisher : Master Program of Environmental Health, Faculty of Public Health, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkli.14.2.57-64

Abstract

Background: Byssinosis is still health problems associated with exposure to cotton dust. High risk of health problems in Environmental Health Risk Assessment is expressed as a Risk Quotenit (RQ) .Work activities, the use of personal protective equipment, and psychological disorder may also affect the incidence of byssinosis. Methods: This was an observational research with cross sectional design. The population in this research are all employees of PT.Grandtex.Eighty workers from morning shifts only were randomly selected. Each worker was examined of the FEV1 and FVC. Questionnaires structured was another tools for collecting data.Total dust measured in the working environments and ambient air.Results: The results by Chi-Square test showed significant relation between the Risk Quotenit (RQ) with byssinosis (p-value 0.043; PR 1,8 (95%CI : 0.95-3.52),have a significant relationship between work activities with byssinosis (p-value 0.035; PR 2.2 (95%CI : 0.86-5.85)have a significant relationship between the use of personal protective equipment with byssinosis (p-value 0.001; PR 2.9 (95%CI : 1.21-6.81) and have a significant relationship between psychological disorders with byssinosis (p-value 0.023; PR 1,7 (95%CI : 1.28-2.14)Conclusion: The number of worker with positive Byssinosis symptoms and abnormal lung function 15 people(18.75%) , positive Byssinosis symptoms and normal lung function 35people(43.75%) Keywords : Byssinosis, cotton dust, risk assessment
Penambahan Variasi Kompos Dapur Terhadap Germination Indeks Tanah Mulyati, Sri Slamet; Pujiono, Pujiono; Prijanto, Teguh Budi; Fikri, Elanda
Jurnal Kesehatan Lingkungan Indonesia Vol 21, No 1 (2022): Februari 2022
Publisher : Master Program of Environmental Health, Faculty of Public Health, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkli.21.1.99-105

Abstract

Latar Belakang: Kompos berkualitas bagus dapat dilihat dari tingkat kematangan dan stabilitas kompos itu sendiri.Germination Index (GI) merupakan uji fitotoksisitas kompos terbaik karena alasan kemudahan dan keandalan. Nilai Germination Index (GI) akan mengalami penurunan ketika kondisi tanaman tercemar oleh logam berat.Metode: Penelitian ini adalah eksperime semu, skala laboratorium. Tujuan penelitian ini adalah untuk mengetahui nilai Germination Index (GI) pada berbagai kondisi tanah. Benih yang ditanam di berbagai media adalah  kacang hijau atau Vigna radiata. Variabel yang diamati dalam penelitian ini adalah Germination Index. Germination Index merupakan nilai perkalian persentase perkecambahan (Seed Germination) dan Panjang Akar (Root Length). Variabel penting lain yang diamati adalah pH tanah dan logam berat biji kacang hijau.Hasil: Hasil penelitian menunjukkan bahwa nilai persentase perkecambahan (SG) campuran tanah kompos adalah 80-86,67%. Panjang Akar (RL) pada campuran tanah kompos adalah 0,7-1,36 cm. Nilai Germination Index (GI) campuran tanah kompos sebesar 17,46-34,89%. Tidak ada perbedaan yang signifikan dalam nilai Germination Index (GI) antara campuran tanah kompos yang berbeda-beda (1: 1, 2: 1.3: 1).Simpulan: Nilai Germination Index tanah yang terkontaminasi Chrom lebih besar dari campuran tanah kompos. Semakin tinggi nilai pH kompos semakin menurun nilai panjang akar sehingga memengaruhi nilai Germination Index menjadi lebih rendah dibandingkan pertumbuhan benih pada media tanah terkontaminasi Chrom. ABSTRACT: Title: Adding Variations In Kitchen Compost To Soil Index GerminationBackground: Good quality compost can be seen from the level of maturity and stability of the compost itself.. Germination Index (GI)  the best compost phytotoxicity test for reasons of ease and reliability. The Germination Index (GI) value will decrease when plant conditions are contaminated by metals. Method: Th study was a quasi-experimental, laboratory scale. The purpose of this study was to determine the value of the Germination Index (GI) in various soil conditions Seeds planted on various media are Vigna radiata. The variable observed in th study  the Germination Index. Germination index value  the multiplication of the percentage of Seed Germination (SG) and Root Elongation (RE).Other important variables observed were soil pH and heavy metals in Vigna radiata seeds.Result: The results showed that the value of Seed Germination (SG) in the soil added by compost variation was 80-86.67%. The value of Root Length (RL) on the soil added with compost variation  0.7-1.36 cm. Germination Index (GI) value in the soil added by compost variation  17.46-34.89%. There was no significant difference in Germination Index (GI) values between different soil conditions with the addition of compost (1: 1, 1: 2.1: 3)Conclusion: The Germination Index value of soil contaminated with Chromium was greater than that of the compost soil mixture. The higher the pH value of the compost, the lower the root length value so that the Germination Index value was lower than the growth of seeds on soil contaminated with Chromium.