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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

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Articles 9 Documents

Search results for , issue "Vol 17, No 1 (2020): Maret 2020" : 9 Documents clear

Pengaruh Variasi Jenis dan Ukuran Limbah Organik Terhadap Kadar Air Kompos Blok dan Pertumbuhan Tanaman Cabai Novita, Elida; Andriyani, Idah; Romadona, Zakina; Pradana, Hendra Andiananta
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

Organic waste is potential as a compost material. It was supported by the amount of nutrient content. The compost block is a technology for utilizing organic material as a plant nursery. The research objective was to examine the variants of type and size of organic matter effect on the water content in compost blocks and vegetative growth of chili plants. The materials type of compost block were coffee pulp, tobacco petiole, and rice husks. Size variations in compost block were 10, 40 and 80 mesh. Experimental design on the types and sizes of organic materials using a Completely Randomized Design. The experimental results show that the highest value of water content in compost block with the watering of the same volume amount 51.22 mL of water is coffee pulp material with a range value of 40 - 50%. Coffee pulp and rice husk as compost block material influenced the vegetative growth of chili plants. The statistical tests that show a significant effect on the type and size of organic waste material on the chili plant growth i.e height and leaf area plants. The results become a consideration for variation type and size of organic waste choice for compost block materials.

RETRAKSI: Analisis Parameter Fisika-Kimia untuk Kepentingan Rehabilitasi Ekosistem Mangrove di Pesisir Pulau Bungkutoko Kota Kendari Yasin, Asramid; Pristya, Terry Y. R.
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

Retraction NotificationAfter going through a careful process of review and attention to the article that have been published in Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan, Volume 17 Issues 1 pp 1-18 in March 2020, the editor board decided to retract this article because of its violence to the Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan's ethical code.This article has been submitted at the same time in the Journal of Green Growth and Environmental Management. Before being published, we have made an effort to detect plagiarism using the turnitin application twice, on 30 November 2019 (23% of similarity) and 30 August 2019 (18% of similarity). On January 2, 2020, the corresponding author corrected and editted the article and the Editor published the article in the "Article in press" issue. Subsequently, the article was published in Volume 17 No. 1 of March 2020.We have corresponded with the authors and the authors declare their willingness to revoke their articles at Jurnal Green Growth dan Manajemen Lingkungan. As long as the article has not been revoked from the Jurnal Green Growth dan Manajemen Lingkungan, the document and its contents removed from the Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan.AbstractIn Southeast Sulawesi rehabilitation of mangrove areas that have been damaged but in reality not all mangrove rehabilitation activities were successful, this was allegedly caused by a mismatch in the type of mangrove and incompatibility of rehabilitation techniques used with environmental conditions or parameters of the local coastal environment. This study is aimed to analyze the condition of coastal environmental parameters in Bungkutoko island, district of Abeli in rehabilitation proposed of mangrove ecosystem and to find a proper rehabilitation strategy for it can be applied in that area. This study was carried on June to July 2009 in the coastal of Bungkutoko island, Abeli district, Kendari Town. Data in this study is analyzed as descriptively for giving common view of that area. The measurement results of several physical-chemical parameters on the coast of Bungkutoko island at stations I, II and III are suitable for mangrove ecosystem rehabilitation activities, which have a slope of the base: flat and sloping, particle size: small substrate, binding capacity of substrate particles: moderate to loose, confinement coastline: protected and semi protected and open, wave: relatively small, sea level deviation: moderate, tidal type: mixture tends to double daily, current speed: weak, sediment suspension: normal and salinity: 25-35 ppt. Also pay attention to the right planting time on the condition of mangrove tree is in having fruits and calm water condition of sea. And for planting technic is propaguls directly planted to the ground and using seeds on the polybags.

Kajian Kualitas Perairan Laut Sekitar Muara Sungai Jelitik Kecamatan Sungailiat â€“ Kabupaten Bangka Wibowo, Mardi; Rachman, Reno Arief
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

Jelitik River is the main river and economic artery of Sungailiat District, Bangka Regency. Currently around the Jelitik River there is a Jelitik Fishing Port and is developed as an industrial area. In addition to the problems of sedimentation problems with the development of industrial estates and the presence of sand mining rich in tin ore on land and on the high seas it is feared that it will reduce the quality of the environment, especially the surrounding sea water. Therefore, this study is needed in order to find out the quality of waters in this estuary which can be used as a basis or baseline for the initial environment of this region if later this area will be developed as a port or industrial area. The method used in this study is field observation, water sampling, and laboratory analysis. Therefore, as an initial step, it is necessary to identify the quality of the waters in this estuary which can be used as the basis or initial environmental baseline of this area if later this area will be developed as a port or industrial area. Based on observations in the field of laboratory analysis of water samples, generally the quality of seawater around the estuary of Jelitik River still meets seawater quality standards both for port activities, marine tourism and for biota. Some parameters that exceed the quality standard include total suspended solid (TSS) which reaches 250 mg/l, total dissolved solids (TDS) which reaches 24,700 mg/l and nitrate content which reaches 0.38 mg/l. BOD value is 4.7 mg / l and COD is 46.4 mg / l, these parameters are still below the existing sea water quality standard.

Pengolahan Limbah Ikan Menjadi Biodiesel dengan Radiasi Mikrogelombang Purwaningrum, Shintawati Dyah; Sukaryo, Sukaryo
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

The fish waste contains a lot of oil, so there needs to be a way to treat fish waste to be more useful. One way that can be done is to process it into biodiesel. Biodiesel production begins with taking oil from fish waste by steaming, fish waste oil was analyzed for free fatty acid levels, and obtained by 1.8%. The process was continued with esterification because the FFA value was above 1%, with a reaction time of 15 minutes and a 450watt microwave power. The esterification and transesterification process were carried out in a modified microwave. This study uses a variable change in the form of micro-wave (microwave) power variations of 300, 450, 600 and 800 watts and the ratio of moles of oil to methanol 1: 6, 1:12, 1:18, 1:24. The highest yield obtained by Biodiesel in reactant ratio 1:18 variable and 600 watt microwave power by 97%, while the lowest yield in variable 1: 6 with 300 watt microwave wave power by 88%. Biodiesel from fish waste produced was analyzed using GC-MS to determine the formation of methyl esters. The methyl esters contained in the form of stearic acid with an area of 21%. Analysis of the characteristics of biodiesel density was 863 kg/m3, viscosity was 3.12 mm2/s, cetane number was 55.72. From several characteristics test of biodiesel, fish waste is included in the biodiesel requirements of the Indonesian National Standard. Testing the water content is still high above the limit set by SNI biodiesel which is equal to 0.80%.

Sintesis Natrium Zirkonia Sebagai Katalis Reaksi Transesterifikasi Minyak Goreng Bekas Agustin, Niyar Candra; Prasdiantika, Ricka
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

Catalyst is one of factor that affect the results of the transesterification reaction. Catalyst has spesific properties that can only be used in certain reaction. In order to carry out the transesterification reaction a suitable catalyst is needed and has optimal performance. This research aims to synthesize sodium zirconia (Na2O/ZrO2) as a catalyst for transesterification reaction of used cooking oil into biodiesel and the effect of the concentration of NaOH solution on the zirconia catalyst (ZrO2). The sodium zirconia catalyst(Na2O/ZrO2) was synthesized by wet impregnation method by mixing ZrO2 and NaOH solution with variations in concentrations of 2, 4 and 6 M. Transesterification reaction is carried out with catalyst amount of 5%(w/w), with areaction time of 20 minutes, and by microwave heating at 400 watt microwave power. The comparison of oil molar with methanol was 1:15. Na2O/ZrO2 catalysts was characterized by Fourier Transform Infrared(FT-IR) Spectrophotometer, and X-Ray Diffractometer (XRD) and Scanning Electron Microscopy/Energy Dispersive X-ray (SEM/EDX). The resulting biodiesel was characterized by Gas Chromatography-Mass Spectrometry (GC-MS). Using Na2O/ZrO2 2 M catalysts produced the most biodiesel which was 85.5% (w/w). The formed biodiesel contained methyl palmitate (25,11%), methyl linoleate (10,87%), methyl elaidate (57,88%), and methyl stearate (6,14%). The characterization results showed that Na2O/ZrO2 as the transesterification used cooking oil catalyst was successfully synthesized.

Pengelolaan Limbah Padat Bahan Berbahaya dan Beracun (B3) Medis RS Bhayangkara Tk. I Raden Said Sukanto Clarisca, Vio Alma; Samadikun, Budi Prasetyo
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

The hospital is one of the objects that has a major role in contributing medical waste, Â where the waste is classified as hazardous and toxic waste. Medical waste that not treated properly will bring nosocomial disease to humans and pollute the environment. For this reason, waste management is very needed. Medical waste produced by Bhayangkara Hospital Tk. I Raden Said Sukanto came from patient care rooms and medical support rooms. The amount of medical hazardous and toxic waste generated in January 2020 was 16.866 kg which included infectious, pharmaceutical, chemical and sharps waste. Medical hazardous and toxic solid waste management in Bhayangkara Tk. I Raden Said Sukanto Hospital includes reduction, packaging, symbol and labeling, storage, transportation, and processing. Bhayangkara Tk. I Raden Said Sukanto Hospital is guided by government regulations that forced in Indonesia. However, there was still some discrepancies between the existing conditions and regulations caused by the lack of adequate Human Resources.

Sintesis dan Karakterisasi Zeolit dari Abu Bagasse Sebagai Adsorben Logam Berat Cu(II) Setiawan, Adhi; Hanun, Jihan Nabillah; Afiuddin, Ahmad Erlan
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

The relatively high silica content in bagasse ash can be used as raw material for making zeolite. Zeolite can be used as a heavy metal adsorbent in industrial wastewater treatment. This study aims to synthesize zeolite from bagasse ash and to apply zeolite as an adsorbent of Cu(II) in a continuous system reactor. The effects of contact time, zeolite size, and concentration of Cu(II) solution on the removal efficiency of metals have been studied in this research. The synthesis of zeolite was carried out using the hydrothermal method at 100Â°C for 7 hours. The synthesized zeolite was characterized using SEM-EDX, XRD, FTIR, and BET The adsorption process was carried out using a continuous reactor with a flow rate of 0.4 L/min and flowed for 60 minutes with sampling at 15-minute intervals. The zeolite size used was 100 and 200 mesh. The results of SEM-EDX analysis showed that Zeolite has an irregular morphology and contains Si at 35.15%. The XRD results show that the zeolite crystallinity is relatively low. The specific surface area of zeolite at size 100 mesh and 200 mesh were 439.48 m2 /g and 697.76 m2/g respectively. The best Cu(II) waste adsorption test results were obtained under zeolite conditions with a particle size of 200Â mesh, the concentration of Cu(II) wastewater of 25 mg/L, and an operational time of 60 minutes with a removal efficiency of Cu(II) of 41.57%

Potensi Pembentukan Air Asam Tambang Pada PIT 3000, Blok Toraja, PT Trubaindo Coal Mining Berdasarkan Studi Karakteristik Geokimia dan Mineralogi Batuan Overburden dan Underburden Winarno, Tri; Ali, Rinal Khaidar; Langit, Wesly Rambu
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

Penambangan batubara di Indonesia kebanyakan dilakukan dengan sistem tambang terbuka, yang menyebabkan batuan yang ada pada lokasi penambangan tersingkap ke permukaan, sehingga mudah bereaksi dengan udara dan air. Tingginya kandungan mineral sulfida seperti pirit dan markasit pada lokasi pertambangan batubara, berpotensi menghasilkan asam tambang. Air asam tambang dapat menyebabkan terjadinya pencemaran lingkungan yang menjadi ancaman bagi ekosistem air dan tanah dengan meningkatkan konsentrasi logam berat. Penelitian ini bertujuan untuk mengidentifikasi kandungan mineral pada lapisan batuan overburden dan untuk mendeterminasi jenis mineral sulfida pembentuk asam tambang. Metode yang digunakan adalah penyelidikan lapangan, analisis mineralogi, geokimia dan pengukuran stratigrafi terukur untuk mengevaluasi kandungan mineralogi dan karakteristik geokimia pada batuan overburden dan underburden lapisan batubara Pit 3000. Hasil penelitian menunjukkan bahwa batuan overburden tersusun oleh batulempung dengan ketebalan berkisar 1,60 m â€“ 5,15 m, sedangkan batuan underburden dicirikan oleh litologi yang beragam seperti batulempung, batulanau dan batupasir dengan ketebalan berkisar 0,20 m â€“ 4,50 m. Berdasarkan analisis geokimia pada 18 sampel batuan overburden, diketahui bahwa lapisan overburden memiliki karakteristik yang didominasi oleh batuan Non Acid Forming (NAF) dengan 83% NAF, 11% Potential Acid Forming (PAF) dan 6% uncertain. Karakteristik lapisan underburden didominasi oleh batuan PAF dengan 45% PAF, 19% NAF dan 36% uncertain.

Refuse Derived Fuel (RDF) dari Sampah Perkotaan dengan Proses Biodrying: Review Chaerul, Mochammad; Wardhani, Annisa Kusuma
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 1 (2020): Maret 2020
Publisher : Universitas Diponegoro

The utilization of waste into fuel (Refuse Derived Fuel, RDF) is an alternative to overcome the problem of municipal solid waste (MSW). Many processes can be applied to produce RDF including through biodrying process. Biodrying is a part of Mechanical-Biological Treatment (MBT) aiming to reduce water content in the waste by utilizing heat generated from microorganism activities while degrading organic matter in the waste, thus the calorific value will increase. The paper aims to make a review from various research papers on biodrying process published in scientific journals, so it becomes one of reference on further research on biodrying process by considering the characteristics of waste in Indonesia. The review has been conducted by focusing on several important aspects on the research such as operation principle, reactor design configuration, parameters to be examined, and the characteristics of feed and product.

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