scholarly journals UJI EKSPREMENTAL KARAKTERISTIK BRIKET ARANG BERBAHAN BAKU LIMBAH SEKAM PADI SIAM DAN PANDAK

INFO-TEKNIK ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 47
Author(s):  
A'yan Sabitah ◽  
Apip Amrullah ◽  
Akhmad Syarief
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Rice Husk ◽  
Alternative Fuels ◽  
Combustion Characteristics ◽  
A Value

Utilization of waste rice husk, especially in South Kalimantan, is not very efficient. Therefore, it needs more maximal utilization, for example it is used to manufacture alternative fuels in the form of charcoal briquettes. The effort to maximizing utilize waste rice husk as charcoal briquettes, we need to know the combustion characteristics. The study, we used a variation of the ratio between siam rice husk charcoal in the peat region areas and pandak is located in the tidal areas with adhesives of 5%, 10% and 15% respectively. Characteristics of testing follows SNI 01-6235-2000. Based on the results of the study, it is known that the charcoal waste of rice husk waste with a percentage of 5% adhesive has a good value compared to the addition of other adhesives, where siam rice husk has a water content of 4.9% and pandak has a higher moisture content of 5.0%, whereas for husk heating values Pandak rice is larger with a value of 5063.6 cal / gram, compared to siam rice husk with a value of 4894.5 cal / gram.

scholarly journals Thermochemical Characterization of Rice Husk (Oryza Sativa Linn) for Power Generation

2020 ◽  
Vol 20 (2) ◽  
pp. 184
Author(s):  
Nikdalila Radenahmad ◽  
Md Sumon Reza ◽  
Muhammad S. Abu Bakar ◽  
Abul K. Azad
Keyword(s):  
Energy Source ◽  
Power Generation ◽  
Oryza Sativa ◽  
Moisture Content ◽  
Rice Husk ◽  
Biomass Gasification ◽  
Heating Value ◽  
A Value ◽  
Pellet Density

Rice husk is biomass that can be utilized as fuel for biomass gasification as a renewable energy source. In this paper, thermochemical methods were used to determine the higher heating values, moisture content, bulk density, pellet density, microstructure, and elemental composition of Thai Rice Husk (Oryza Sativa Linn). The heating energy was analyzed using a bomb calorimeter, which showed a higher heating value of 15.46 MJ/kg. Determination of pellet density through rice husk powder pelletization exhibited a value of 1.028 g/cm3, while moisture content was 5.017 wt%. The heating value and moisture content revealed good agreement with the literature values, indicating the potentiality of rice hush for energy generation. Scanning electron microscopy (SEM) showed that the raw rice husk and its ash have similar porosity types but different bulk structure.  Elemental analysis using energy dispersive X-ray (EDX) indicated that rice husk contains O, Si, C while O and C percentages were drastically decreased during combustion. The obtained heating value and moisture content proved that rice husk could be used as a bio-energy source in biomass gasification for power generation.

KARAKTERISTIK KIMIA DAN UJI AKTIVITAS ANTIOKSIDAN RUMPUT LAUT (Sargassum sp.) YANG DIPEROLEH DARI KECAMATAN WANGI-WANGI DAN KECAMATAN WANGI-WANGI SELATAN KABUPATEN WAKATOBI

2021 ◽  
Vol 4 (1) ◽  
pp. 44
Author(s):  
La Ode Sarlin ◽  
Haslianti Haslianti ◽  
Sri Rejeki
Keyword(s):  
Antioxidant Activity ◽  
Moisture Content ◽  
Water Content ◽  
Descriptive Analysis ◽  
High Water ◽  
Carbohydrate Content ◽  
High Water Content ◽  
Test Results ◽  
A Value ◽  
Keywords Antioxidants

ABSTRACT         The aim of this study was to determine the proximate content (moisture content, carbohydrate content), phytochemicals (alkaloids, flavonoids, saponins, steroids, terpenoids) and antioxidants. This research used descriptive analysis. Proximate test results on Sargassum sp. P1 = 35.43% and P2 = 34.42% High water content is found in sample code P1, while carbohydrates P1 = 11.85. and P2 = 22.05. Phytochemical test of seaweed Sargassum sp. there are flavonoids, saponins, and terpenoids but there are no alkaloids and steroids. Antioxidant activity of seaweed Sargassum sp. P1 has a value of IC50 = 153.37 while the value of IC50 is at P2 = 162.32. Keywords: Antioxidants, Phytochemicals Sargassum sp, and Proximate.ABSTRAKTujuan penelitian ini untuk mengetahui karakterisasi kimia aktivitas antioksidan rumput laut Sargassum sp. yang diperoleh dari Kecamatan Wangi-Wangi dan Kecamatan Wangi-Wangi selatan Kabupaten Wakatobi.  Penelitian ini menggunakan analisis deskriptif. Hasil Uji proksimat pada rumput laut Sargassum sp. yaitu : P1 = 35,43% dan P2 = 34,42% Kadar air yang tinggi terdapat pada kode sampel P1, Sedangkan karbohidrat dengan kode sampel P1= 11,85. dan P2 = 22,05. Uji fitokimia rumput laut Sargassum sp. terdapat flavonoid, saponin dan terpenoid namun tidak terdapat alkaloid dan steroid. Aktivitas antioksidan rumput laut Sargassum sp. P1 memiliki nilai IC50 = 153,37, sedangkan nilai IC50 pada P2 = 162,32.Kata kunci: Antioksidan, Fitokimia Sargassum sp, dan Proksimat.

scholarly journals KARAKTERISTIK DAN SKRINING FITOKIMIA EKSTRAK ETANOL 70% BATANG KEPUH (Sterculia foetida L.)

Jurnal Kimia ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 22
Author(s):  
N. P. S. E. Cahyani ◽  
J. Susiarni ◽  
K. C.S. Dewi ◽  
N. L.P. Melyandari ◽  
K. W.A. Putra ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Ethanol Extract ◽  
Phytochemical Screening ◽  
Residual Solvent ◽  
Solvent Content ◽  
Residual Content ◽  
Ethanol Level ◽  
Anti Inflammatory

Kepuh (Sterculia foetida L) is a type of kapok plant that has been scientifically proven to have activity as an anti-inflammatory and analgesic. 70% ethanol extract of stem stem is obtained by maceration using 70% ethanol. Examination of the characteristics of 70% ethanol extract of kepuh stem included organoleptic, of moisture content and determination of residual solvent content. Phytochemical screening of 70% ethanol extract of kepuh bark includes: alkaloid, flavonoid, saponin, tannin , polyphenol, and examination of glycosides. The results of the examination of the characteristics of 70% ethanol extract of kepuh stem obtained water content of 8.66 ± 0.748%, the residual content of the solvent had a 0 (zero) ethanol level. The results of phytochemical screening showed 70% ethanol extract of stem stem containing steroid compounds, triterpenoids, flavonoids, saponins, tannins and polyphenols. The identification using UV-Vis spectrophotometry produced ? 212, the absorbance was 1.8601 and ? 284, the absorbance was 0.42186.

Characterization of Shear Strength and Interface Friction of Organic Soil

2020 ◽  
Vol 857 ◽  
pp. 203-211
Author(s):  
Majid Hamed ◽  
Waleed S. Sidik ◽  
Hanifi Canakci ◽  
Fatih Celik ◽  
Romel N. Georgees
Keyword(s):  
Shear Stress ◽  
Shear Strength ◽  
Internal Friction ◽  
Moisture Content ◽  
Water Content ◽  
Friction Angle ◽  
Structural Materials ◽  
Organic Soil ◽  
Internal Friction Angle ◽  
Interface Friction

This study was undertaken to investigate some specific problems that limit a safe design and construction of structures on problematic soils. An experimental study was carried out to examine the influence of loading rate and moisture content on shear strength of organic soil. Influece of moisture content on interface friction between organic soil and structural materials was also attempted. A commonly used soil in Iraq was prepared at varying moisture contents of 39%, 57% and 75%. The experimental results showed that the increase in water content will decrease the shear stress and the internal friction angle. An increase of the shearing rate was found to decrease the shear stress and internal friction angle for all percetanges of water contents. Further, direct shear tests were carried out to detect the interface shear stress behavior between organic soil and structural materials. The results revealed that the increase in water content was shown to have significant negetavie effects on the interface internal friction and angle shear strength.

Dispersion studies on Gezira soil

1941 ◽  
Vol 31 (4) ◽  
pp. 466-478 ◽  
Author(s):  
T. N. Jewitt
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Initial Moisture Content ◽  
Degree Of Dispersion ◽  
Heavy Clay

1. The degree of dispersion on shaking of the heavy clay Gezira soil has been studied in relation to its initial moisture content when it is added to the water. A minimum dispersibility was found at about 7% initial moisture content. Such behaviour is different from that found with certain English soils by Puri & Keen.2. Spontaneous dispersion was studied using the same soil, and by this method it was found that the dispersion decreases with increasing moisture content over a range of zero to 9% moisture.3. This relation between dispersion and water content is discussed in relation to possible effects in the field of practice. Attention is drawn to possible seasonal and daily differences in the effect of rainfall.

Hydraulic Conductivity of Compacted Tropical Clay Treated with Rice Husk Ash

2011 ◽  
Vol 367 ◽  
pp. 63-71 ◽  
Author(s):  
Adrian O. Eberemu ◽  
Agapitus A. Amadi ◽  
Joseph E. Edeh
Keyword(s):  
Hydraulic Conductivity ◽  
Water Content ◽  
Rice Husk ◽  
Industrial Waste ◽  
Rice Husk Ash ◽  
Waste Product ◽  
Dry Density ◽  
Waste Containment ◽  
Hydraulic Behaviour ◽  
Waste Containment Systems

Laboratory study on compacted tropical clay treated with up to 16% rice husk ash (RHA), an agro-industrial waste; to evaluate its hydraulic properties and hence its suitability in waste containment systems was carried out. Soil-RHA mixtures were compacted using standard Proctor, West African Standard and modified Proctor efforts at-2, 0, 2 and 4% of optimum moisture content (OMC). Compacted samples were permeated and the hydraulic behaviour of the material was examined considering the effects of moulding water content, water content relative to optimum, dry density and RHA contents. Results showed decreasing hydraulic conductivity with increasing moulding water content and compactive efforts; it also varied greatly between the dry and wet side of optimum decreasing towards the wet side. Hydraulic conductivity generally decreased with increased dry density for all effort. Hydraulic conductivity increased with rice husk ash treatment at the OMC; but were within recommended values of 1 x 10-7 cm/s for up to 8% rice husk ash treatment irrespective of the compactive effort used. This shows the suitability of the material as a hydraulic barrier in waste containment systems for up to 8% rice husk ash treatment and beneficial reuse of this agro-industrial waste product.

The effect of alkali treatment on rice husk moisture content and drying kinetics

2014 ◽  
Vol 70 ◽  
pp. 468-475 ◽  
Author(s):  
Alireza Bazargan ◽  
Tesfalet Gebreegziabher ◽  
Chi-Wai Hui ◽  
Gordon McKay
Keyword(s):  
Moisture Content ◽  
Rice Husk ◽  
Alkali Treatment ◽  
Drying Kinetics

scholarly journals PEMANFAATAN BIJI KETAPANG (Terminalia catappa) SEBAGAI SUMBER PROTEIN DAN SERAT PADA PRODUK MAKANAN STIK

2019 ◽  
Vol 1 (1) ◽  
pp. 27-33
Author(s):  
Eman Darmawan
Keyword(s):  
Water Content ◽  
Wheat Flour ◽  
Test Method ◽  
Snack Food ◽  
Organoleptic Properties ◽  
Seed Flour ◽  
A Value ◽  
Randomized Design ◽  
Yellow Color ◽  
Completely Randomized Design

The purpose of this study was to determine the effect of substitution ketapan seed to chemical and organoleptic properties of  the resulted snack food, knowing the exact level of substitution, so obtain the snack food liked the panelists. The design used in this study was completely randomized design (CRD) with single factor that influences the concentration of seed flour substitution ketapan seed consisting of 5 treatments. Each treatment be repeated 3 times. The data obtained was analyzed by Analysis of Variance (ANOVA), if there was a difference between the treatment of advanced test conducted by Duncan`s Multiple Ranges Test Method (DMRT) at the level of 5%. Substitution of wheat flour with ketapan seed flour  affects the snack food produced, which can reduce the water content of the snack food and increase levels of protein and fiber snack food. Ketapan seed flour substitution preferred by the panelists was substitution ketapan seed flour up to 30% with a value of 3.52 and the criteria snack food produced had a water content of 3.67%, 15.10% db protein content, fiber content of 3.64 % db, brownish yellow color (2.95), a rather tasted wheat flour (3.35), and crispy (3.60).

scholarly journals KARAKTERISTIK SIFAT-SIFAT KIMIA DAN ORGANOLEPTIK KUE KERING BERBAHAN DASAR PATI SAGU, UBI KAYU, UBI JALAR DAN KELADI

2016 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Febby J Polnaya ◽  
Rachel Breemer
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Sweet Potato ◽  
Sensory Analysis ◽  
Total Protein ◽  
Proximate Composition ◽  
Ash Content ◽  
Crude Fiber ◽  
Brownish Yellow ◽  
Color Texture

The purpose of this research was to characterize chemical and sensory properties (color, texture, taste and liking) of starch-based sago, cassava, sweet potato and cocoyam cookies. Analysis of cookies include moisture content, ash, fat, protein, crude fiber and sensory analysis including color, texture, taste and likeness). The proximate composition indicated that the water content of cookies varied between 1.48 to 2.05%, ash content of 0.65 to 0.72%, 19.23 to 21.76% of fat, crude fiber from 0.41 to 0.71% and 1.33 to 2.42% of total protein. Based on organoleptic tests, the color of cookies was yellow to brownish-yellow, with crispy texture, the taste was sweet and were mostly preferred.

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