Distance Difference Influence Tray and Concentration Variation to Rates Decreased Efficiency Iron (Fe) and Manganese (Mn) on Tray Aerator

There is some way to down Fe's content and Mn in water, but then in tool chooses this research that easy being made therefore in tool uses this research Tray Aerator, with distance difference among tray which is 45 cm and 65 cm and utilizes water sample that variably. This research intent evaluate Fe's appropriation efficiency and Mn on tray aerator with tray's distance difference and Fe's concentration difference and Mn which is taken from two well water samples and brand samples. On result gets this research, appropriation efficiency concentrates Fe and Mn on spaced tray 45 cm just reaches 73%, meanwhile on spaced tray 65 cm reaches 99%. Supreme appropriation efficiency to concentrate Fe acquired of Fe's concentration is contemned( 1,19 mg / l) as big as 99%. Supreme appropriation efficiency to concentrate Mn acquired of Mn's concentration is contemned( 0,71 mg / l) as big as 100%. Appropriation on well water and brand water, Fe's concentration and Mn all same effective on tray's distance 65 cm, supreme appropriation efficiency Fe's concentration and Mn happens on Fe's concentration and Mn is contemned

Pengaruh Lama Fermentasi terhadap Kadar Bioetanol dari Limbah Kulit Pisang Kepok dan Raja

Banana peel (musa sapientum) is organic waste that have value of carbohydrates that high and nutrition that can help the growth of a microbe. Based on it, then appears an idea to make use of the bioethanol from the peel as a source of raw materials. Bioethanol is one alternative energy that are spoken currently who is expected to replace energy source of petroleum that has existed that is the fluid a result fermentation of sugar from sources of carbohydrate used the aid microorganisms. In this research process of waste the banana peel become bioethanol is aimed to determine the process of waste the banana peel plantain and kepok, ranging from process of smoothing the hydrolysis of, fermentation until distillation of which are then analyzed levels of each bioetanol each kind of the banana peel based on the number of yeast and time. In this process of fermentation by the addition of saccharomyces cerevisiae by number of yeast, as many as 3 5, 7 gram with long fermentation different namely during 2, 4, 6, 8 days influencing the outcome of the level of bioethanol on the type of skin of plantain and kepok. This result of research produce levels of bioethanol the most high that is on the type of kepok banana peel with yeast fermentation as many as seven gram during the time of 8 days worth 17.05 % while on the peel of plantain with heavy yeast and the same time having bioetanol levels as many as 16.55 %. The longer fermentation, microorganisms more active and the extension of yeast the result of ethanol is increasing contained in a sample of the banana peel with heavy yeast 3, 5 grams, 7 gram levels of ethanol more robust on the day to 8

Pengaruh Fermentasi Em4 (Effective Microorganism) Dan Air Tape Singkong (Manihot Utilissima Pohl) Terhadap Kadar Etanol Pada Bonggol Pisang (Musa Paradisiacal)

Bioethanol is one of the fill-in alternative energy of fossil fuels. The substances used in this research is banana weevils. The production of banana weevil bioethanol through the process of hydroulic enzym, fermentation with stater and distillation. Enzyme hydrolysis using materials such as Aspergillus Niger, while the fermentation process using a variety stater EM4 and water fermented cassava then variation on the long fermentation time (3 days, 6 days, 9 days and 12 days). The parameters measured were pH, sugar content after hydrolysis and the fermentation process, then ethanol levels after the distillation process. In the process of hydrolysis of the banana weevil extract yield of 2.00% glucose. The results on ethanol the variation of stater EM4 and water fermented cassava obtained the highest fermentation is day 6 is 1.03% v / v and 1.05% v / v. Bioetanol merupakan salah satu energi alternatif pengganti bahan bakar fosil. Bahan yang digunakan pada penelitian ini adalah bonggol pisang. Pembuatan bioetanol dari bonggol pisang melalui proses hidrolisis enzim, fermentasi dengan stater dan destilasi. Hidrolisis enzim menggunakan bahan berupa aspergillus Niger, sedangkan proses fermentasi menggunakan variasi stater berupa EM4 dan air tape singkong setar variasi pada lama waktu fermentasi (3 hari, 6 hari, 9 hari dan 12 hari). Parameter yang diukur adalah nilai pH, kadar gula setelah proses hidrolisis dan saat proses fermentasi, kemudian kadar etanol setelah proses destilasi. Pada proses hidrolisis ekstrak bonggol pisang menghasilkan kadar glukosa sebesar 2,00%. Hasil penelitian kadar etanol pada variasi stater EM4 dan air tape didapatkan hari fermentasi tertinggi adalah hari ke 6 yaitu 1,03% v/v dan 1,05% v/v

Perancangan Pengelolaan Keselamatan Dan Kesehatan Kerja Pada Pekerjaan Bekisting Proyek Bangunan Gedung Bertingkat Tinggi Dengan Menggunakan Metode Hazard Identification, Risk Asessment Dan Risk Control Di PT Jaya Konstruksi (Studi Kasus : Proyek Pembangu

Construction Company is a part of work place that doing all of the hazard identification process, risks evaluation, and control that affect the worker safety. That component will be identified with risks type and the dangers that occurs in the construction process such as begisting, information from the identification will being analyze to determine the level of every source. The result of analyses and evaluation will be reviewed with SMK3 risks assessment which is a standard in this study. Based on the risk assessment of the construction activities on PT. Jaya Konstruksi, concluded that the risk level from before and after the project uses wilcoxon test is unaffected to decrease the risks, it proved from these formula {asymp.sig.(2-tailed)>0,005} that means Ho is accepted and the risks control is not affecte

Pemanfaatan Ampas Bioetanol dari Kulit Pisang (Musa Sapientum) sebagai Briket

With the energy crisis in Indonesia in recent years is due to the human need for fuel is increasing, while the supply of oil or natural gas is limited. This causes the cost of fuel energy. In addition to fuel oil and natural gas, timber when done randomly and in large quantities will interfere with the balance of the ecosystem or environmental sustainability. The purpose of this study was to obtain fuel briquettes from waste banana peel pulp bioethanol, as a substitute for fossil fuels. The study was conducted with a variable fixed briquette diameter 1 cm, height 5 cm and a total weight of 22 grams per briquet. While variable is the% change in the composition of the adhesive (25% and 50%) and the type of material that is Ampas bioethanol kepok banana peel and King. Response observed that color, calorific value, long burning fire and the resulting color. The results showed that% moisture content greatly affects the calorific value, long burning time. The calorific value of the greatest and most long ignition time obtained on treatment plantain because it produces a lower water content compared to banana pulp kepok. From the analysis that has been done can be concluded that the briquettes are in accordance with SNI

Pengaruh Penambahan Limbah Udang pada Pupuk Cair dari Fermentasi Urin Sapi terhadap Kualitas Unsur Hara Makro

The husbandry activity processes will result side products, known as waste such as feces and urine. The characteristic of these waste are renewable and very potential to be used as liquid fertilizer. On this research, urine from cow is used as raw material for liquid fertilizer because of its nutrient element. One of the techniques to make liquid ferltilizer by fermentation. This research have six variations by adding different amount of shrimp waste in order to know the best effect of macronutrient element for liquid fertilizer. Variation of the addition are: 0 gr; 15 gr; 30 gr; 45 gr; 60 gr; 75 gr and fermentated for 14 days. The best addition of shrimp waste for good liquid fertilizer is 60 gr addition of shrimp waste, which have nutrient element content of macro C-organic, Nitrogen, Phospor, and Kalium with each percentage 6,75%, 1,62%, 0,63%, and 0,73%

Efisiensi Penurunan Cod dan Tss dengan Fitoremediasi Menggunakan Tanaman Kayu Apu (Pistia Stratiotes L.) Studi Kasus: Limbah Laundry

Inovasi penggunaan tanaman untuk dimanfaatkan secara maksimal terus dikembangkan. Tanaman tidak hanya menjadi sumber pangan, namun dapat menjadi salah satu cara dalam pengolahan limbah. Pengolahan limbah menggunakan tanaman dinamakan fitoremediasi. Salah satu tanaman yang dapat digunakan untuk mengolah limbah adalah Kayu Apu. Tanaman Kayu Apu (Pistia stratiotes l.) adalah tanaman air yang tumbuh dan berkembang di air. Pada penelitian ini menggunakan variasi dari panjang akar kurang dari 10 cm dan lebih dari 10 cm, serta variasi dari jumlah tanaman sebanyak 8, 12, dan 16 buah tanaman. Dari variasi ini dapat terbagi menjadi 6 reaktor dan 1 reaktor kontrol. Penelitian ini menggunakan limbah laundry karena banyaknya USAha sejenis yang terdapat di daerah Tembalang, lokasi penelitian dilakukan. Konsentrasi COD dan TSS pada limbah laundry yang akan diolah adalah sebesar 121 mg/l dan 150 mg/l. Penyisihan COD paling baik terjadi sebesar 56,7 mg/l dan efisiensi sebesar 73,67% pada tanaman dengan panjang akar lebih dari 10 cm dengan jumlah tanaman sebanyak 16 buah. Sedangkan pada parameter TSS, penyisihan terjadi sebesar 69 mg/l dengan efisiensi sebesar 46% yang juga terjadi pada tanaman dengan panjang akar lebih dari 10 cm dan dengan jumlah tanaman 16 buah

Analisis Komposisi Terbaik dari Variasi C/n Rasio Menggunakan Limbah Kulit Buah Pisang, Sayuran dan Kotoran Sapi dengan Parameter C-organik, N-total, Phospor, Kalium dan C/n Rasio Menggunakan Metode Vermikomposting

Vermikomposting adalah proses penguraian sampah atau limbah organik yang dilakukan dengan bantuan cacing sebagai dekomposer, sehingga dihasilkan kotoran cacing (pupuk) atau disebut kascing. Terdapat beberapa faktor yang mempengaruhi kinerja cacing dalam menghasilkan kascing seperti pH media, nutrisi dalam pakan, kelembaban media, suhu media dan aerasi dalam media. Penelitian ini memiliki tujuan menganalisis kandungan hara C, N, P. K. Kemudian dari hasil analisis tersebut dibandingkan dengan kriteria kompos organik sesuai SNI 19-7030-2004 dan menentukan komposisi terbaik dari variasi C/N rasio 30, 25, dan 20. Pada penelitian ini menggunakan skala demplot dengan reaktor sebanyak 14 buah yang terdiri dari 4 buah reaktor C/N rasio 30, 4 buah reaktor C/N rasio 25, 4 buah reaktor C/N rasio 20 dan 2 buah reaktor kontrol yaitu (pure) limbah sayuran dan kulit pisang. Setelah 12 hari vermikomposting selesai, menunjukan komposisi terbaik pada reaktor B dengan C/N rasio sebesar 30 dengan variasi kotoran sapi 85%, kulit pisang 10% dan limbah sayuran 5%. Variasi ini mampu menghasilkan kandungan hara C sebesar 9,10 %, N sebesar 0,73%, C/N sebesar 12,47, P sebesar 0,0731% dan K sebesar 0,0795%. Penelitian ini membuktikan bahwa penggunaan C/N rasio 30 merupakan C/N rasio yang ideal dan optimum untuk sistem pengomposan vermikomposting, sehingga kascing yang dihasilkan memiliki kandungan hara yang baik sebagai kompos organik. Hasil penelitian ini mengindikasikan bahwa penggunaan limbah kaya nutrisi dan penggunaan komposisi kotoran sapi lebih banyak dapat meningkatkan hasil kascing. Dalam sistem vermikomposting pakan cacing yang mengandung nutrisi yang baik akan membuat kotoran Cacing (kascing) mengandung hara yang baik

Pengaruh Konsentrasi Chemical Oxygen Demand (Cod) Dan Luas Permukaan Elektroda Graphite Rod Terhadap Kinerja Dual Chamber Microbial Fuel Cells (Dcmfcs)

Domestic wastewater have high concentration of COD. The increasing amount of domestic wastewater can affect the quantity of wastewater in receiving water which exceeds the carrying capacity of environment. Thus, will cause negative effect in environmental quality. On this research, the wastewater was treated by using Dual Chamber Microbial Fuel Cells (DCMFCs). Microbial Fuel Cells is a device which is used to convert chemical energy to electricity using microorganism as catalyst assistance. In order to achieve maximum COD removal and electrical discharge, COD concentration and graphite rod electrode surface area has been varied. COD concentration varied on 400 mg/l, 800 mg/l, and 1200 mg/l . While the graphite rod electrode surface area varied on 25 cm2, 49 cm2, and 74 cm2. DCMFCs reactor operated in 2 sequences, acclimatization on 14 days and reactor running process on 35 days. The optimum COD removal and power density result produced by 800 mg/l COD concentration and 25 cm2 elctrode surface area