scholarly journals Equilibrium Isotherm Modeling, Kinetics and Thermodynamics Study for Removal of Lead from Waste Water

2011 ◽  
Vol 8 (1) ◽  
pp. 333-339 ◽  
Author(s):  
Z. Chowdhury ◽  
S. M. Zain ◽  
A. K. Rashid
Keyword(s):  
Palm Oil ◽  
Metal Ion ◽  
Low Cost ◽  
Agricultural Waste ◽  
Ion Concentration ◽  
Palm Oil Fuel Ash ◽  
Dimensionless Constant ◽  
Fuel Ash ◽  
Pseudo Second Order ◽  
Oil Fuel

The low cost adsorbent palm oil fuel ash (POFA) derived from an agricultural waste material was investigated as a replacement of current expensive methods for treating wastewater contaminated by Pb(II) cation. Adsorption studies were carried out to delineate the effect of contact time, temperature, pH and initial metal ion concentration. The experimental data followed pseudo second order kinetics which confirms chemisorptions. The values of Langmuir dimensionless constant, RLand Freundlich constant, 1/n were less than 1 representing favorable process for adsorption. Thermodynamic parameters such as ΔG°, ΔH°and ΔS°, related to Gibbs free energy, enthalpy and entropy were evaluated. It was concluded that, chemically treated palm oil fuel ash (POFA) can be used successfully for adsorption of Pb(II) from aqueous solution.

Feasibility study of cadmium adsorption by palm oil fuel ash (POFA)-based low-cost hollow fibre zeolitic membrane

2018 ◽  
Vol 25 (22) ◽  
pp. 21644-21655 ◽  
Author(s):  
Mohamad Sukri Mohamad Yusof ◽  
Mohd Hafiz Dzarfan Othman ◽  
Azeman Mustafa ◽  
Mukhlis Abdul Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Palm Oil ◽  
Low Cost ◽  
Hollow Fibre ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Cadmium Adsorption ◽  
Oil Fuel

Performance of Concrete by Using Palm Oil Fuel Ash (POFA) as a Cement Replacement Material

2015 ◽  
Vol 815 ◽  
pp. 29-33 ◽  
Author(s):  
Liyana Ahmad Sofri ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Nur Fitriah Isa ◽  
Muhammad Azizi Azizan ◽  
Muhammad Munsif Ahmad ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Solid Waste ◽  
Palm Oil ◽  
Low Cost ◽  
Weight Percent ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Pozzolanic Material ◽  
Fuel Ash ◽  
Oil Fuel

Palm Oil Fuel Ash (POFA) is one of the solid waste in Malaysia and had trouble with the ash removal. Therefore, the use of waste oil palm ash can overcome the problem of solid waste. POFA is a pozzolanic material and it can act as a replacement of cement (OPC) to produce concrete with higher strength and low cost. POFA quality will increase as the range made up to a medium level of fineness in the size of 50 microns. POFA used to replace OPC is 0%, 10%, 30% and 50% by weight percent of OPC. POFA concrete compressive strength will be tested after a curing process that concrete age of 7 days and 28 days. POFA concrete density is also tested and compared with OPC concrete. Results showed that compressive strength POFA lower than normal concrete. On the other hand, the replacement of cement by 10% POFA shows a record high in compressive strength compared with other POFA mixing at the age of 7 days and 28 days. Fineness pozzolanic POFA is the best material and can be used as a cement replacement alternative.

EFFECTIVENESS OF PALM OIL FUEL ASH AS MICRO-FILLER IN POLYMER CONCRETE

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Jahangir Mirza ◽  
Nur Hafizah A. Khalid ◽  
Mohd Warid Hussin ◽  
Mohammad Ismail ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Palm Oil ◽  
Agricultural Waste ◽  
Silica Sand ◽  
Polymer Concrete ◽  
Compression Tests ◽  
Palm Oil Fuel Ash ◽  
Cellulose Structure ◽  
Filling Ability ◽  
Fuel Ash ◽  
Oil Fuel

This paper presents the potential of utilizing an agricultural waste known as palm oil fuel ash (POFA) as micro-filler in polymer concrete (PC). Being a plant with open cellulose structure, such potential has gone untapped due to its tendency to take up excessive resin during the mixing process. This study has invested its filler characterization by first segregating the POFA fillers into fine (ground POFA, GPOFA) and coarse (unground POFA, UPOFA) fillers. GPOFA was paired with calcium carbonate while UPOFA was with silica sand for comparisons. Filler characteristics were studied under microstructural examination; particle size analyzer and morphology. Twenty design mixes of polymer blended and polymer concrete were casted for flowability and compression tests, respectively. Further investigations were carried out after two categories of fillers were incorporated with different filler contents.  Test data showed that filler had changed its physical features significantly after surface modification. Also, the finer fillers gave superior filling ability and compressive strength. This study concluded that POFA can be potentially transformed into effective PC filler following some physical modifications and mixing with the appropriate design mix. 

Effects of Mould Pressure and Substitution of Quartz by Palm Oil Fuel Ash on Compressive Strength of Porcelain

2015 ◽  
Vol 1087 ◽  
pp. 121-125 ◽  
Author(s):  
Hassan Usman Jamo ◽  
Mohamad Zaky Noh ◽  
Zainal Arifin Ahmad
Keyword(s):  
Compressive Strength ◽  
Palm Oil ◽  
Ball Mill ◽  
Agricultural Waste ◽  
Applied Pressure ◽  
Mixed Powder ◽  
Palm Oil Fuel Ash ◽  
Soaking Time ◽  
Fuel Ash ◽  
Oil Fuel

Palm oil fuel ash (POFA) is a by-product from agricultural waste produced thousand tonnes every year. This paper presents the use of treated POFA as a substitute material for quartz in fabricating an improved porcelain ceramic. Untreated POFA was dried in an oven at 100 oC for 24 h. Then, it was ground in a ball mill for 1.5 h with the revolution rate of 200 rev/min to reduce the particle size. Next, it was sieved to remove the particles coarser than 50 μm. The POFA was treated by heating it at a temperature of 600 oC for 1.5 h. The mixed powder was then pressed into pellets at mould pressure of 31 MPa, 61 MPa, 91 MPa and 121 MPa. All the pellets were sintered at the temperature of 1100 oC for 2 h soaking time. It was found that the highest compressive strength of 34 MPa is at 15 wt% POFA and mould pressure of 91 MPa. The increment in the strength could be attributed from the changes in the microstructural features as a result of an optimum applied pressure.

Hydrogen production via CO2 reforming of CH4 over low-cost Ni/SBA-15 from silica-rich palm oil fuel ash (POFA) waste

2019 ◽  
Vol 44 (37) ◽  
pp. 20815-20825 ◽  
Author(s):  
Chi Cheng Chong ◽  
Nornasuha Abdullah ◽  
Syahida Nasuha Bukhari ◽  
Nurul Ainirazali ◽  
Lee Peng Teh ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Palm Oil ◽  
Low Cost ◽  
Co2 Reforming ◽  
Palm Oil Fuel Ash ◽  
Co2 Reforming Of Ch4 ◽  
Fuel Ash ◽  
Oil Fuel

scholarly journals Low cost palm oil fuel ash based ceramic membranes for oily water separation

2018 ◽  
Vol 14 (4) ◽  
pp. 419-424 ◽  
Author(s):  
Zhong Sheng Tai ◽  
Mohd Hafiz Dzarfan Othman ◽  
Siti Khadijah Hubadillah ◽  
Ahmad Fauzi Ismail ◽  
Mukhlis A Rahman ◽  
...  
Keyword(s):  
Palm Oil ◽  
Ceramic Membrane ◽  
Low Cost ◽  
Ceramic Membranes ◽  
Permeate Flux ◽  
Water Separation ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Oily Water ◽  
Oil Fuel

Ceramic membranes have been gaining so much interest for oily water separation due to their superior characteristics such as good anti-fouling property, superhydrophilic, as well as excellent thermal and chemical stabilities. However, ceramic membranes are very expensive which hinders their uses in large scale applications. Therefore, the aim of our study is to develop a low cost palm oil fuel ash (POFA) based ceramic hollow fiber ceramic membrane for oily water separation application. An asymmetric membrane structure consisting of sponge-like and macrovoid layers were acquired using a combined phase inversion and sintering technique. The membranes were sintered at different temperatures ranging from 1000 to 1150 °C. The sintered membranes were characterized in terms of morphology, mechanical strength, porosity, permeate flux and oil rejection performance. A high oil rejection efficiency of up to 96.0% was obtained for the membrane sintered at 1050 °C with the permeate flux of 185.42 L/m2h at the applied pressure of 3 bar. Based on the comparison with other ceramic membranes reported in the literature, it can be concluded that POFA based ceramic hollow fiber membrane showed a comparable performance and thus can be a promising low cost alternative ceramic membrane for oily water separation application.

scholarly journals Optimization of Palm Oil Fuel Ash (POFA) Content as Cement Replacement Based on Strength and Porosity

2020 ◽  
Vol 997 ◽  
pp. 3-7
Author(s):  
Abdul Wafi Razali ◽  
Nur Fadilah Darmansah ◽  
Afzan Ahmad Zaini ◽  
Siti Halipah Ibrahim ◽  
Nadia Zaini ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Palm Oil ◽  
Agricultural Waste ◽  
Construction Materials ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Concrete Production ◽  
Fuel Ash ◽  
Oil Fuel

The usage of agricultural waste in form of ashes as one of the constituent materials in concrete has been studied in recent years. Palm Oil Fuel Ash (POFA) is one of the largest agricultural wastes produced in Malaysia that contain high amount of silica with pozzolanic properties. The mass production of POFA are typically disposed to open area and in turn can generate environmental issues and health hazards. Due to the waste disposal problem, a number of initiatives have been done by utilizing POFA into various construction materials including as substitute to Ordinary Portland Cement (OPC) in concrete production. This paper discusses on the water absorption properties and compressive strength of concrete by utilizing POFA in several series of cement replacement. OPC was replaced by POFA at 2.5%, 5%,7.5% and 10% in these series of mix design. Control OPC concrete sample was also prepared for comparison. The samples were prepared in 100 mm cubic moulds and tested for compressive strength and water absorption for 7, 14 and 28-day curing ages. Three replicates were prepared for each concrete mix and for each test conducted. The results stipulated that the higher percentage of POFA replacement decreased the compressive strength and increased the water absorption amount of concrete mixture over different concrete ages.

Pemanfaatan Limbah Padat Abu Cangkang dan Serat Kelapa Sawit dari Boiler untuk Pembuatan Bata Beton Ringan

2016 ◽  
Vol 9 (2) ◽  
pp. 120-128
Author(s):  
Haspiadi Haspiadi ◽  
Kurniawaty Kurniawaty
Keyword(s):  
Compressive Strength ◽  
Solid Waste ◽  
Palm Oil ◽  
Absorption Capacity ◽  
Water Absorption Capacity ◽  
Palm Oil Fuel Ash ◽  
Foaming Agent ◽  
Fuel Ash ◽  
Palm Oil Mill ◽  
Oil Fuel

Research of  the utilization solid waste of palm oil fuel ash from boiler as row materials  for manufacturing light concrete brick has been conducted. The main objective of this study is to investigate the potential use solid waste of palm oil fuel ash from palm oil mill boilers as row materials for manufacturing light concrete brick has recently attracted for an alternative environmentally sustainable application. In this study, light concrete brick made with various proportions of palm oil fuel ash from palm oil mill boilers and sand were fabricated and studied under laboratory scales. Percentage of palm oil fuel ash of 0% as a control,  10%, 20%, 30%, 40%, 50%, 60%, replacement  sand, wheras others materials such as Portland cement, lime, gypsum, foaming agent and aluminium with the numbers constant. The quality of light concreate brick   were applied followed by the compressive strength test, density and water absorption capacity. The study discovered that the compressive strength for all composition meet the recommended value to light structural of 6.89 MPa as prescribed in SNI 03-3449-2002. In the same manner density of light concrete brick for all proportion under the maximum density recommended value of 1400 Kg/m3 according to SNI 03-3449-2002. While water absorption capacity of increased by the increasing use of ashes. Therefore, palm oil fuel ash from boiler can be used as raw material for the light concrete brick which is  environmental friendly because using solid waste and also an alternative handling solid waste.ABSTRAKPenelitian pemanfaatan limbah padat abu cangkang dan serat kelapa sawit dari boiler sebagai bahan baku pembuatan bata beton ringan telah dilakukan. Tujuan dari penelitian ini adalah pemanfaatan limbah padat abu boiler berbahan bakar cangkang dan serat sebagai bahan pembuatan bata beton ringan sebagai salah satu alternatif pengelolaan lingkungan yang bekelanjutan. Dalam penelitian ini, bata beton ringan dibuat dengan berbagai komposisi abu boiler dan pasir yang diproduksi dalam  skala laboratorium. Persentase dari abu berturut-turut 0% sebagai kontrol, 10%, 20%, 30%, 40%, 50% dan 60% mensubtitusi pasir, sedangkan bahan lain yaitu semen, kapur, gypsum,  foaming  agent serta aluminium pasta dengan jumlah tetap. Mutu bata beton ringan yang diujikan adalah kuat tekan, bobot jenis dan daya serap air. Hasil penelitian menunjukkan bahwa kuat tekan untuk semua komposisi memenuhi batas minimum yang dipersyaratkan untuk stuktural ringan yaitu 6,89 MPa sesuai SNI 03-3449-2002. Demikian pula bobot jenis dari bata ringan yang dihasilkan masih dibawah dari batas maksimum yang direkomendasikan SNI 03-3449-2002 yaitu maksimal 1400 Kg/m3. Sedangkan daya serap air mengalami kenaikan dengan naiknya jumlah abu yang digunakan . Limbah padat abu boiler berbahan bakar cangkang dan serat sawit dapat dimanfaatkan sebagai bahan baku pembuatan bata beton ringan yang ramah lingkungan dengan memanfaatkan limbah dan menjadi salah satu alternatif pengelolaan limbah. Kata kunci :  Abu cangkang kelapa sawit,  bata beton ringan, bobot jenis,  daya serap air,  limbah,  kuat tekan

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