scholarly journals Utilization of Palm Oil Fuel Ash as Binder in Lightweight Oil Palm Shell Geopolymer Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Michael Yong Jing Liu ◽  
Choon Peng Chua ◽  
U. Johnson Alengaram ◽  
Mohd Zamin Jumaat

Traditionally fly ash (FA) has been used to replace cement as binder in the geopolymer concrete. The utilization of palm oil industrial waste materials known as palm oil fuel ash (POFA) and oil palm shell (OPS) that are abundantly available in South East Asia as binder and coarse aggregate in geopolymer concrete would give an added advantage in both the environmental and economic aspects. The mechanical properties of the OPS geopolymer concrete (OPSGC) through the use of POFA, FA, and OPS are investigated and reported. A total of ten OPSGC mixtures were prepared with varying percentages of POFA and FA such as 0, 10, 20, 40, and 100%. The specimens prepared with two alkaline solution to binder (AK/B) ratios of 0.35 and 0.55 were oven cured at 65°C for 48 hours. The experimental results showed that the highest compressive strength of 30 MPa was obtained for the mix with 20% replacement of FA by POFA and AK/B ratio of 0.55, which underwent oven curing. Further, the mix of up to 20% POFA (with AK/B ratio of 0.55) can be categorized as structural lightweight concrete. An increase of the POFA content beyond 20% decreases the mechanical properties, and hence this mix is recommended to be used.

2016 ◽  
Vol 115 ◽  
pp. 307-314 ◽  
Author(s):  
Mohammad Momeen Ul Islam ◽  
Kim Hung Mo ◽  
U. Johnson Alengaram ◽  
Mohd Zamin Jumaat

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 32058-32068
Author(s):  
Sunisa Chuayjumnong ◽  
Seppo Karrila ◽  
Saysunee Jumrat ◽  
Yutthapong Pianroj

In this study, the effects of two microwave absorbers (MWAb) or catalysts, namely activated carbon (AC) and palm oil fuel ash (POFA), were investigated in microwave pyrolysis of oil palm shell (OPS).


2015 ◽  
Vol 754-755 ◽  
pp. 326-330 ◽  
Author(s):  
Khairunisa Muthusamy ◽  
Nurazzimah Zamri ◽  
Iqbal Mohd Haniffa ◽  
Noor Nabilah Sarbini ◽  
Fadzil Mat Yahaya

Concern towards reducing waste disposed by Malaysian palm oil industry, palm oil fuel ash (POFA) and oil palm shell (OPS) that poses negative impact to the environment has initiated research on producing oil palm shell lightweight aggregate concrete (OPS LWAC) containing palm oil fuel ash. The present investigation looks into the effect of palm oil fuel ash content as partial cement replacement to compressive strength and acid resistance of oil palm shell lightweight aggregate concrete. Two types of mix, plain OPS LWAC and another one containing POFA as partial cement replacement have been used in this research. Cubes of 100 x 100 x 100 (mm) were water cured for 28 days before subjected to compressive strength test and acid resistance test. The findings indicate that suitable integration of POFA content would ensure occurrence of optimum pozzolanic reaction leading to densification of concrete internal structure which increases the compressive strength and better durability to acid attack. Integration of 20% POFA successfully assist concrete to achieve the highest compressive strength and exhibit superior resistance against acid attack compared to other mixes.


Author(s):  
Saysunee Jumrat ◽  
Teerasak Punvichai ◽  
Wichuta Sae-jie ◽  
Seppo Karrila ◽  
Yutthapong Pianroj

Abstract The important parameters characterizing microwave pyrolysis kinetics, namely the activation energy (E a) and the rate constant pre-exponential factor (A), were investigated for oil palm shell mixed with activated carbon and palm oil fuel ash as microwave absorbers, using simple lab-scale equipment. These parameters were estimated for the Kissinger model. The estimates for E a ranged within 31.55–58.04 kJ mol−1 and for A within 6.40E0–6.84E+1 s−1, in good agreement with prior studies that employed standard techniques: Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The E a and A were used with the Arrhenius reaction rate equation, solved by the 4th order Runge-Kutta method. The statistical parameters coefficient of determination (R 2) and root mean square error (RMSE) were used to verify the good fit of simulation to the experimental results. The best fit had R 2 = 0.900 and RMSE = 4.438, respectively, for MW pyrolysis at power 440 W for OPS with AC as MW absorber.


2014 ◽  
Vol 695 ◽  
pp. 81-84
Author(s):  
E.P.K. Yong ◽  
D.C.L. Teo ◽  
N. Mohammed Sutan

Oil palm waste materials which consist of palm oil fuel ash (POFA) and oil palm shell (OPS) are contributing negatively towards the environment as they are normally disposed in landfills. In recent years, research studies found that POFA and OPS can be used as potential replacements for cement and coarse aggregates respectively in the effort to solve the environmental problems contributed by these wastes. In this study, POFA was used to replace ordinary Portland cement at 15% by weight of binder while OPS fully replaced the coarse aggregates to produce lightweight concrete. A suitable mix proportion for OPS concrete was determined through several trial mixes and then cement was partially replaced by POFA to produce POFA OPS concrete. The POFA OPS concrete registered density of 1870 kg/m3 which categorises it as a lightweight concrete. This concrete also produced slump value of 100 mm and compressive strength of 25.50 and 30.50 MPa at age 7 and 28 days respectively.


2015 ◽  
Vol 125 ◽  
pp. 804-810 ◽  
Author(s):  
Khairunisa Muthusamy ◽  
Nurazzimah Zamri ◽  
Mohammad Amirulkhairi Zubir ◽  
Andri Kusbiantoro ◽  
Saffuan Wan Ahmad

2014 ◽  
Vol 567 ◽  
pp. 446-450 ◽  
Author(s):  
Khairunisa Muthusamy ◽  
Zamri Nurazzimah

Today, the necessity of environmental awareness and enforcement is more demanding and crucial than ever before. Environmental protection encompasses not only pollution but also sustainable development and conservation of natural resources and the eco-system. As a conclusion, protection and preservation of environment is still a pressing issue. This issue on environmental preservations and sustainability all over the world has lead to innovations of new material using by-products generated from various sectors such as palm oil industry. One of the potential recycle materials from palm oil industry is palm oil fuel ash which contains siliceous compositions and reacted as pozzolans to produce a stronger and denser concrete. Palm oil fuel ash (POFA) is by-product obtained by burning of fibers, shells and empty fruit bunches as fuel in palm oil mill boilers. Apart from POFA, oil palm shell (OPS), which also from oil palm waste has been used as lightweight aggregates resulting from never ending research conducted. In this investigation, these two types of waste were collected from the same palm oil mills in Kuantan, Malaysia and were both utilized inside lightweight aggregate concrete. By incorporating POFA and OPS as partial cement and coarse aggregate replacement, lightweight aggregate concrete with 35 MPa can be produced and is also significantly higher than control OPS concrete.


2021 ◽  
Vol 1136 (1) ◽  
pp. 012046
Author(s):  
Bala Gopal Adapala ◽  
Durga Chaitanya Kumar Jagarapu ◽  
Syed Hamim Jeelani ◽  
B. Sarath Chandra Kumar ◽  
Arunakanthi Eluru

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