Pengaruh Rasio Padat/Cair dan Waktu Pengadukan pada Proses Ekstraksi Silika dari Palm Oil Fly Ash (POFA)

2021 ◽  
Vol 6 (2) ◽  
pp. 60-67
Author(s):  
Fika Rahma Yuni ◽  
Lita Darmayanti ◽  
Dewi Fitria
Keyword(s):  
Fly Ash ◽  
Palm Oil ◽  
Oil Fly Ash

Abu terbang sawit (POFA) merupakan salah satu limbah padat yang dihasilkan dari pembakaran cangkang dan sabut sawit sebagai pembangkit uap untuk konsumsi pabrik sawit. POFA memiliki kandungan silika yang tinggi dan berpotensi digunakan sebagai adsorben. Penghilangan logam pengotor dan pemisahan SiO2 dengan proses ekstraksi merupakan solusi untuk meningkatkan kinerja silika. Proses ektraksi dipengaruhi oleh beberapa faktor diantaranya adalah rasio padat/cair dan waktu pengadukan. Penelitian ini menggunakan rasio padat/cair 1:8, 1:10, 1:12 dan waktu pengadukan 120; 150; 180; dan 210 menit. Hasil penelitian menunjukkan massa endapan silika terbanyak pada rasio 1:12 dan waktu pengadukan 210 menit dengan massa sebanyak 18,35 gram atau 73,4% dari 25 gram POFA dengan kadar silika 47,97% dan luas permukaan silika sebesar 8,18 m2/g. Silika dari setiap variasi diujikan pada air gambut. Efisiensi penyisihan warna, zat organik, dan Fe tertinggi terdapat pada silika hasil ekstraksi dengan rasio padat/cair 1:12 dan waktu pengadukan 210 menit yaitu sebesar 80%, 46%, dan 37%.

scholarly journals The Effect of Palm Oil Fly Ash Reinforcement on Recycle Aluminium via Sand Casting

2018 ◽  
Vol 7 (4.27) ◽  
pp. 162
Author(s):  
Mohd Hafiz Mohd Noh ◽  
Azzura Ismail ◽  
Ahmad Hussein Abdul Hamid
Keyword(s):  
Fly Ash ◽  
Palm Oil ◽  
Sand Casting ◽  
Fly Ashes ◽  
Casting Method ◽  
Oil Fly Ash

Recycle aluminium has been mixed with palm oil fly ash based on fraction weight of overall weight of palm oil fly ashes to aluminium recycle. The ratios discussed on this paper are 0%, 3% 6%, 9%, 12% and 15%. The samples have been developed via sand casting method. The result shows that the best composition has been achieved when we added 3% of palm oil fly ashes, with the new composite aluminum have a highest hardness with the value of 119.7HV, with the Modulus of raptured of 7.71Mkg/m2  

Effects of Calcium Carbonate and Treated Palm Oil Fly Ash on the Rheological Properties of Asphalt Mastic

2015 ◽  
Vol 802 ◽  
pp. 321-326
Author(s):  
Meor Othman Hamzah ◽  
Foad Mohamed Elkut
Keyword(s):  
Fly Ash ◽  
Calcium Carbonate ◽  
Rheological Properties ◽  
Palm Oil ◽  
Asphalt Binder ◽  
Rotational Viscometer ◽  
Asphalt Mastic ◽  
Aging Conditions ◽  
Pavement Construction ◽  
Oil Fly Ash

In sustainable asphalt pavement construction, the proper selection of materials can be a challenging task. This paper focuses on a newly developed asphalt modifier named calcium carbonate (CaCO3) combined with Treated Palm Oil Fly Ash (TPOFA) to improve the properties of asphalt mastic. The rheological properties of mastic in terms of penetration, softening point, rotational viscosity and Superpave rutting factor using 60/70 asphalt binder blended with 5, 10, 15, 20 % of CaCO3+TPOFA were calculated to evaluate asphalt binder properties subjected to different aging conditions. The rotational viscometer (RV) was used to evaluate the properties of mastic at test temperatures from 120°C to 170°C. The dynamic shear rheometer (DSR) was used in temperature sweep test from 46°C to 82°C at 6°C increments at 10 rad/sec frequency to measure the G*, δ and Superpave rutting factor G*/sinδ. A one-way ANOVA statistical analysis was used to analyze the results .The test results showed that all asphalt mastic exhibited higher viscosity compared to the base binder. The addition of CaCO3 +TPOFA increased the G* but reduced the phase angle which indicated improved stiffness of asphalt mastic. Hence, incorporating CaCO3+TPOFA can potentially improve the rutting resistance of asphalt mastic.

scholarly journals Composite Catalyst of Palm Mill Fly Ash-Supported Calcium Oxide Obtained from Eggshells for Transesterification of Off-Grade Palm Oil

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 724
Author(s):  
Zuchra Helwani ◽  
Muliadi Ramli ◽  
Edy Saputra ◽  
Yogi Lesmana Putra ◽  
Desly Fadila Simbolon ◽  
...  
Keyword(s):  
Fly Ash ◽  
Calcium Oxide ◽  
Palm Oil ◽  
Catalytic Performance ◽  
Composite Catalyst ◽  
X Ray Diffraction ◽  
Preparation Conditions ◽  
Prospective Application ◽  
Oil Fly Ash ◽  
Dehydration Processes

This research was designed to synthesize a composite catalyst of palm oil fly ash-impregnated calcium oxide prepared from eggshell waste. Several preparation conditions, such as temperature and time applied to calcination and dehydration processes, were investigated. As a result, the optimum temperature and the length of time of calcination were 900 °C and 3 h, respectively. Meanwhile, the dehydration process was performed optimally at 600 °C for 3 h. The X-ray diffraction (XRD) results indicate that the obtained catalyst mostly contained calcium oxide compounds (CaO and Ca(OH)2) and minor impurities of silica oxides (SiO2 and Ca2SiO4), with a catalyst-specific surface area of 30.24 m2/g. Regarding its catalytic performance, the composite catalyst proved successful for prospective application the in transesterification of palm oil off-grade, resulting in methyl palmitate and methyl oleate, which are two biodiesel compounds.

scholarly journals Optimum preparation and thermal conductivity of novel glossy paint prepared from waste of palm oil fly ash composite

2015 ◽  
Vol 12 ◽  
pp. 3058-3064 ◽  
Author(s):  
C.K. Sia ◽  
◽  
W. L. Tan ◽  
O.L.C. Narong ◽  
S. Hakimi Mohd Nor ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Fly Ash ◽  
Palm Oil ◽  
Oil Fly Ash

Study on Utilization of Palm Oil Fly Ash as a Filler for Thermoset Natural Rubber

2013 ◽  
Vol 844 ◽  
pp. 280-284
Author(s):  
Bahruddin ◽  
Zuchra Helwani ◽  
Lili Saktiani ◽  
Yanuar ◽  
Rahmat Satoto
Keyword(s):  
Fly Ash ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Palm Oil ◽  
Testing Machine ◽  
Hot Press ◽  
Elongation At Break ◽  
Roll Mill ◽  
Oil Fly Ash ◽  
Vulcanization Process

Palm oil fly ash (POFA) as solid waste produced from crude palm oil industries consist of quite high of silica (more than 50% w/w). This study aimed to compare the properties and morphology of thermoset natural rubber (TNR) with POFA, silica, carbon black (CB), and mixture of POFA-CB fillers. The filler content used is 30 phr (per hundred rubbers). The process of making the compound was conducted by using a roll mill at room temperature and a maximum roll rotational speed of 20 rpm. Zinc oxide 5 phr, stearic acid 2 phr, mercaptodibenzothiazyldisulfide (MBTS) 0.6 phr, and Sulfur of 3 phr were used as curative agents. Trimethylquinone (TMQ) 1 phr was used as an antioxidant. Commercial minarex 2.5 phr was used as a plasticizer. Vulcanization process was carried out at a temperature of 150 °C and a pressure of 50 kg/cm2 using a hot press. Morphology was observed using a scanning electron microscope (SEM). Measurement of tensile properties was carried out using universal testing machine (UTM) according to ASTM D412-06a standard. The results indicated that the use of POFA as a filler could potentially produce TNR with quite good morphology, tensile properties and water absorption properties. A mixture of POFA-CB with a mass ratio of 50/50 (w/w) produced the thermoset with the value of 18.5 MPa of tensile strength, 1600% of elongation at break, and 1.2 MPa of elastic modulus.

Solid Freeform Fabrication of Prototypes Using Palm Oil Fly Ash via 3D Printing

2011 ◽  
Vol 11 (9) ◽  
pp. 1648-1652
Author(s):  
N.M. Zain ◽  
N.H. Hassan ◽  
M. Ibrahim ◽  
M.S. Wahab
Keyword(s):  
Fly Ash ◽  
3D Printing ◽  
Palm Oil ◽  
Solid Freeform Fabrication ◽  
Freeform Fabrication ◽  
Oil Fly Ash

INFLAMMATION, CHEMOKINE EXPRESSION, AND DEATH IN MONOCROTALINE-TREATED RATS FOLLOWING FUEL OIL FLY ASH INHALATION

1997 ◽  
Vol 9 (6) ◽  
pp. 541-565 ◽  
Author(s):  
Cheryl R. Killingsworth ◽  
Francesca Alessandrini ◽  
G. G. Krishna Murthy ◽  
Paul J. Catalano ◽  
Joseph D. Paulauskis ◽  
...  
Keyword(s):  
Fly Ash ◽  
Fuel Oil ◽  
Chemokine Expression ◽  
Oil Fly Ash

Chemical modification of waste oil fly ash for improved mechanical and thermal properties of low density polyethylene composites

2011 ◽  
Vol 18 (6) ◽  
pp. 2275-2284 ◽  
Author(s):  
Muhammad J. Khan ◽  
Abdulhadi A. Al-Juhani ◽  
Reyad Shawabkeh ◽  
Anwar Ul-Hamid ◽  
Ibnelwaleed A. Hussein
Keyword(s):  
Thermal Properties ◽  
Fly Ash ◽  
Chemical Modification ◽  
Low Density Polyethylene ◽  
Mechanical And Thermal Properties ◽  
Low Density ◽  
Waste Oil ◽  
Oil Fly Ash ◽  
Polyethylene Composites
Sign in / Sign up

Export Citation Format

Share Document