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Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan

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Published by Universitas Diponegoro

ISSN : 1907817X EISSN : 25500023 DOI : -

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

Arjuna Subject : -

Articles 8 Documents

Search results for , issue "Vol 16, No 2 (2019): Juli 2019" : 8 Documents clear

Penerangan Jalan Umum Tenaga Surya: Studi Kasus di Kota Pangkalpinang Febrianto, Andika; Sunanda, Wahri; Gusa, Rika Favoria
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

This research was conducted to design public street lighting photovoltaic, based on SNI 7391:2008 concerning specifications of public street lighting in urban areas with several parameters that were considered by poles, lights used, intensity of light needed, number of lights needed and supporting equipment for public street lighting photovoltaic. Currently, Jenderal Sudirman road in the city of Pangkalpinang along 1.5 km uses electricity from PLN with 30 units of 150 watt SON lamps and 11 lux light intensity. The design obtained for street lighting photovoltaic while still meet SNI for light intensity, obtained supporting equipment for solar street lighting, namely 31 unit of 8 meter octagonal poles with specifications of 40 watt LED lights for each cross arm, 1 unit of 100 Wp solar panels, unit of 100 Ah VRLA batteries and 1 unit of solar charger controller (10A, 12V / 24V).

Desulfurisasi Batubara Menggunakan Larutan Ekstrak Belimbing Wuluh (Everrhoa Bilimbi L) Amin, Muhammad; Birawidha, David Candra; Isnugroho, Kusno; Hendronursito, Yusuf; Muttaqqi, Muhammad Al; Prilitasari, Nurbaiti Marsas
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

Desulphurization process can improve the quality of coal and reduce the environmental pollution. In this study, the method used for desulphurization process was a leaching method using wuluh starfruit extract as a leaching agent. Starfruit extract obtained by grinded, filtered and extracted the starfruit solution. Coal was crushed by using a grinding ball mill, sifted to obtain samples of 80 mesh, 120 mesh, and 150 mesh. Coal was added with starfruit extract, heated on a hotplate stirrer at a temperature of 110oC, 300 rpm of stirring speed and 3, 4 , 5 hours of leaching time. Leachate solution were analyzed using XRF test. The results of the study showed that 80, 120 and 150 mesh could produce 1.777%, 1.556% and 1.053% of sulfur, respectively. Maximum decrease of sulfur occurred in 150 mesh with 5 hours of leaching time which could reach 0.261% of concentration. Ash content also could decreased from 11.43% to 6.18% and fixed carbon content from 42.15% rose to 51.33%. The desulphurization process using starfruit extract was influenced by the grain size of the coal and the contact time of leaching. The finer the grain size of the coal and the longer the leach contact time, the smaller the sulfur content obtained in the coal after the desulfurization process was carried out

Indeks Pencemaran Lingkungan Secara Fisika-Kimia dan Biokonsentrasi Timbal (Pb) pada Kerang Hijau di Perairan Pesisir Semarang Utara Khusnia, Arsika Zuhrotul; Astorina, Nikke; Rahardjo, Mursid
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

The North Semarang ocean are functioned for high activity area also utilization in one site. The entry of waste into the waters or oceans caused the decrease of water quality.Â Lead (Pb) entered to North Semarang oceans by kind of activities there. The aims of this researc are to describe pollution index and bioconcentration in the study location. This reasearch is descriptive observational with cross sectional study. Sampling location determined beside on zoonation.Twenty four (24) samples were determined purposively besed on location, wind direction and current type. The samples was measured in situ and laboratory test. The average of pH was 8,05 , temperature wasÂ 31,38Â°C, salinity was 28,4 ppt, DO was 4,07 mg/L and lead (Pb) was 0,99 mg/L. The average of dissolved oxygen not in accordance with quality standards (>5 mg/l) also lead (Pb) average is higher than standard (0,008 mg/l). Calculation of pollutan index in North Semarang ocean categorized as moderate polluted and the lead (Pb) bioconcentration on Perna viridis categorized as low accumulative with the value of BCF was 0,62 L/kg (BCF<100). All of samples classified as moderate polluted which caused bioconcentration and low bioacumulation on Perna viridis so that it is harmful for human health.

Implementasi Investasi Hijau dan Strategi daya Saing Hijau Terhadap Green Banking di Kota Surakarta Awatara, I Gusti Putu Diva; Hamdani, Anwar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

The implementation of green banking principle is reflected in a series of initiatives for the community program, community development and business programs, and encourages investment in more responsible businesses as a form of Bank's high concern for the environment. This study aims to analyze Green Investment, and Green Competitive Strategies that have an impact on the implementation of Green Banking in Surakarta City. This research was a survey conducted on bank customer in Surakarta City. The sample in this study was 75 respondents. Data collection methods use in this study were questionnaire and observation. The analysis technique used includes the test of the research instrument, namely the validity and reliability test; classic assumption test include: heteroscedasticity, autocorrelation, normality and multicollinearity test. Hypothesis test is done by using multiple linear regression analysis, t test, F test and analysis of the coefficient of determination (R2). The results of this study indicate that green investment and green competitive strategies have an impact on the implementation of green banking in Surakarta City. The variable that has the greatest impact is Green Competitive Strategies.

Analisis Proximate Briket Tempurung Kelapa dan Ampas Tebu Setiani, Vivin; Setiawan, Adhi; Dhani, Mey Rohma; Maulidya, Risya Dwi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

Fossil fuels are a non-renewable energy source and their existence will be depleted. An alternative is needed that can reduce fossil fuels by using biomass. Biomass waste in the form of bagasse and coconut shell can be used as an alternative fuel in the form of biobriquette. This study aims to analyze the quality value of briquettes from the proximate test of the composition of bagasse and coconut shell produced with briquette quality standards that refer to SNI 01-6235-2000 about wood charcoal briquettes. The variables in this study consisted of five variables. The variables in this study were mass ratio coconut shells to bagasse were 90%: 10%, 80%: 20%, 70%; 30%, 60%: 40% and 50%: 50% respectively. The results of the test of water content, ash content, and volatile matter of the best quality briquettes of five variables were 90% coconut shell and 10% bagasse.

Simple Technology to Convert Coconut Shell Waste into Biochar; A Green Leap Towards Achieving Environmental Sustainability Wibowo, Yudha Gusti; Ramadan, Bimastyaji Surya; Andriansyah, Muhammad
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

Pyrolysis is a technology to convert biomass into high-value product such as biochar. Biochar is a bio-based material as well as char that can maintain soil, water and air quality. Biochar can produced by all of plant parts and generated directly from pyrolysis for a few hours in a certain temperature. The quality of biochar production is highly dependent on the pyrolysis temperature, heating rate, particle size, type, and composition of feedstock and reactor conditions. Several study inform that biochar produced by high temperature such as furnace. Application of biochar in soil can solve contaminated soil from pollutants such as toxic metals contamination, low pH issues and degradable soil caused by industrial activities. Therefore, the application of biochar in water ecosystem can solve some problems such as reduce toxic metals content in wastewater. Biochar known can give significant impact to reduce global warming through the reduction of greenhouse gas emissions and the sequestering of atmospheric carbon into soil. This condition is a problem for several areas especially rural area in developing countries. This paper will describe clearly how to produce biochar use simple technology. Thus, this paper will provide useful information for reducing environmental problems especially on rural areas.

Total Coliform Sumber dan Sistem Distribusi Air Bersih Rumah Sakit Umum Daerah Ungaran Kabupaten Semarang Sari, Jasmine Purnama; Rahardjo, Mursid; Joko, Tri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

RSUD Ungaran menggunakan sumur bor dalam memperoleh air bersih. Total coliform yang terkandung pada sumber air, bak penampung dan ruang Gizi adalah lebih dari 200 CFU/100 ml. Penelitian ini bertujuan untuk mendeskripsikan sumber, sistem distribusi serta efektivitas desinfeksi air bersih. Populasi objek adalah seluruh air bersih RSUD Ungaran, dengan sampel adalah air sumur, bak penampung dan air bersih yang keluar dari kran. Variabel dependen adalah total coliform pada air bersih dan variabel independen adalah kualitas dan kuantitas sumber air, kualitas jaringan distribusi dan dosis desinfektan dengan variabel pengganggu adalah pH dan suhu. Rata-rata pasokan air bersih RSUD Ungaran adalah 2.79 liter/detik. Kapasitas tempat tidur sebanyak 187 dengan kebutuhan 566 liter/tempat tidur/hari. Kebutuhan air bersih rumah sakit 2.48 liter/detik. Kebocoran pipa sering terjadi sehingga menyebabkan bahan pencemar seperti bakteri coliform akibat rembesan septic tank yang berjarak <10 m dengan pipa masuk kedalam air. Penambahan Kalsium Hipoklorit Ca(ClO)2 dosis 10, 15, 20, 25, dan 30 mg/l dengan waktu kontak 30 menit mampu menurunkan total coliform sebesar 98.5% yaitu jumlah rata â€“ rata MPN Coliform kurang dari 3 atau disebut tidak terdapat pertumbuhan mikroorganisme.

Prioritas Penentuan Peningkatan Kualitas Lingkungan Permukiman Kumuh yang Berkelanjutan Mutaqin, Zenal; Persada, Citra; Suroso, Erdi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 2 (2019): Juli 2019
Publisher : Universitas Diponegoro

The enhancement of environmental quality for urban settlement in Palembang is expected to be sustainable due to the increase number of slum areas and the limited funding allocation for the infrastructure establishment. This study aimed to determine priority scale of activities and locations according to three pillars of sustainable development which can alleviate slum areas i.e. physical environment, social and economic aspects by involving all stakeholders. This research will provide information for the local government to determine priority activities and locations for settlement improvement by using Analytical Hierarchy Process (AHP). The study revealed that the main factor to improve the environmental quality for settlement in 29 Ilir sub-district was the infrastructure development with urgency level reaching 46.7%. Meanwhile, the urgency level of social activity factor was approximately 31.2% followed by the economic development factor which was the lowest level by 22.1%. However, the highest priority level from those activity factors was household waste management by 100%, while other priority activities that should be done consecutively were waste infrastructure (93.5%), community service activities (83,6%), environmental drainage (66.2%), sanitation (66.1%), business capital loans (63%), training and entrepreneurship (61%), and compensation for the poor (57,9 %). The aforementioned activities were conducted in priority locations in which environmental quality was relatively poor.

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