Effects of Compactive Effort on Laterite - Oil Palm Empty Fruit Bunch Ash Mixture

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Joy Oke ◽  
Kolawole Osinubi
Keyword(s):  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Compactive Effort

scholarly journals Oil palm empty fruit bunch ash stabilized laterite as a fill material for low-volume pavement

2020 ◽  
Vol 39 (3) ◽  
pp. 721-731
Author(s):  
J.A. Oke ◽  
N.O. Obaji ◽  
K.J. Osinubi
Keyword(s):  
Oil Palm ◽  
Dry Weight ◽  
Strength Properties ◽  
California Bearing Ratio ◽  
Dry Density ◽  
Empty Fruit Bunch ◽  
Maximum Dry Density ◽  
Fill Material ◽  
Compactive Effort ◽  
Low Volume

A reddish-brown laterite was treated with up to 14 % oil palm empty fruit bunch ash (EFBA) by dry weight of soil and compacted with the British Standard light, BSL (or Standard Proctor) compactive effort. Index, compaction, strength and durability tests as well as microanalysis of the natural and stabilized specimens were carried out. The index, compaction characteristics (maximum dry density, MDD and optimum moisture content, OMC) and strength properties (California bearing ratio, CBR and unconfined compressive strength, UCS) were improved with higher EFBA treatment. Peak un-soaked and soaked CBR values of 70.0 and 45.0 %, as well as peak UCS strengths of 253.0, 462.0 and 577 kN/m2 at 7, 14 and 28 days curing were recorded at 8 % EFBA content. Based on the CBR specification specified in the Nigerian General Specifications, the laterite optimally treated with 8 % EFBA compacted with the BSL compactive effort can be used as a fill material in the construction of low-volume traffic pavement. The benefit of the EFBA application is primarily the reduction of the adverse environmental impact of the oil palm empty fruit bunch waste. Keywords: California bearing ratio, durability, laterite, oil palm empty fruit bunch ash, microanalysis, stabilization

Characterisation of Cellulases and Xylanase from Trichoderma virens UKM1 and its Potential in Oil Palm Empty Fruit Bunch (OPEFB) Saccharification

2017 ◽  
Vol 28 (Suppl. 1) ◽  
pp. 171-184 ◽  
Author(s):  
Barbara Ngikoh ◽  
◽  
Noor Adila Abdul Karim ◽  
Jamaliah Jahim ◽  
Farah Diba Abu Bakar ◽  
...  
Keyword(s):  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Trichoderma Virens

Adsorptive removal of Cd (II) using oil palm empty fruit bunch-based charcoal/chitosan-EDTA film composite

2021 ◽  
Vol 21 ◽  
pp. 100449
Author(s):  
Rahmi ◽  
Muhammad Iqhrammullah ◽  
Ulfa Audina ◽  
Husni Husin ◽  
Haya Fathana
Keyword(s):  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Film Composite ◽  
Adsorptive Removal

scholarly journals Torréfaction to improve biomass pellet made of oil palm empty fruit bunch

2021 ◽  
Vol 749 (1) ◽  
pp. 012047
Author(s):  
A Haryanto ◽  
R Nita ◽  
M Telaumbanua ◽  
S Suharyatun ◽  
U Hasanudin ◽  
...  
Keyword(s):  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Biomass Pellet

scholarly journals Preparation of Oil Palm Empty Fruit Bunch Hydrolysate

Fermentation ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 81
Author(s):  
Hironaga Akita ◽  
Mohd Zulkhairi Mohd Yusoff ◽  
Shinji Fujimoto
Keyword(s):  
Hydrothermal Treatment ◽  
Palm Oil ◽  
Oil Palm ◽  
High Performance ◽  
Production Efficiency ◽  
Solid Phase ◽  
Waste Product ◽  
Treatment Temperature ◽  
Empty Fruit Bunch ◽  
Glucose Content

Malaysia is the second largest palm oil producer and exporter globally. When crude palm oil is produced in both plantations and oil processing mills, a large amount of oil palm empty fruit bunch (OPEFB) is simultaneously produced as a waste product. Here, we describe the preparation of hydrolysate from OPEFB. After OPEFB was hydrothermally treated at 180–200 °C, the resultant liquid phase was subjected to high-performance liquid chromatography analysis, while the solid phase was used for acidic and enzymatic hydrolysis. Hemicellulose yield from the acid-treated solid phase decreased from 153 mg/g-OPEFB to 27.5 mg/g-OPEFB by increasing the hydrothermal treatment temperature from 180 to 200 °C. Glucose yield from the enzyme-treated solid phase obtained after hydrothermal treatment at 200 °C was the highest (234 ± 1.90 mg/g-OPEFB, 61.7% production efficiency). In contrast, xylose, mannose, galactose, and arabinose yields in the hydrolysate prepared from the solid phase hydrothermally treated at 200 °C were the lowest. Thus, we concluded that the optimum temperature for hydrothermal pretreatment was 200 °C, which was caused by the low hemicellulose yield. Based on these results, we have established an effective method for preparing OPEFB hydrolysates with high glucose content.

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