Characterization and performance of rice husk as additive in green ceramic water filter fabricated by slip-casting
ISSN: 1708-5284
Article publication date: 12 June 2020
Issue publication date: 2 July 2020
Abstract
Purpose
The purpose of this study is to investigate the using of rice husk (RH) which is a green material derived from agricultural waste with the ability to absorb heavy metal. It has been used in wastewater treatment. In this research, a kaolin-based green ceramic water filter (CWF) incorporated with two different additives (RH and zeolite-based RH ash [RHA]) was successfully fabricated.
Design/methodology/approach
The weight ratio of kaolin:additive was varied (90:10, 80:20 and 70:30) and fabricated via the slip-casting technique. The green CWFs were dried (60°C for 1 h), followed by sintering (1,200°C).
Findings
The green CWF of kaolin:RH with a weight ratio of 70:30 showed the best properties and satisfactory performance with a porous cross-section microstructure, highest porous area (4.58 µm2), good structure, lowest shrinkage (8.00%), highest porosity (45.10%), lowest density (1.79 g cm−3), highest water absorption (55.50%) and hardness (241.40 Hv). This green CWF has also achieved good permeability (42.00 L m−2h−1) and removal of the textile dye (27.88%). The satisfactory characterization and good textile dye removal performance (75.47%) were also achieved from green CWF with kaolin:zeolite at a weight ratio of 80:20.
Research limitations/implications
This research is focused on green CWF and zeolite at a certain amount with the specific characterization analysis methods.
Practical implications
The use of low-cost waste materials to treat dye wastewater from agricultural by-products/wastes sources in treating the dye will enhance the using of green material.
Social implications
Avoiding the waste sludge that can pollute the environment can create a health issue. The use of low-cost waste materials to treat dye wastewater from agricultural by-products/wastes sources in treating the dye can avoid the waste sludge that can pollute the environment and create serious health issue.
Originality/value
All the kaolin-based green CWFs incorporated with two different additives (RH and zeolite-based RHA) fabricated using a simple slip-casting technique have shown the potential to be used as a filter in wastewater treatment applications.
Keywords
Acknowledgements
This work was financially supported by Universiti Tun Hussein Onn Malaysia under the Post Doc Grant (D005), UTM Encouragement Grant Scheme (Q.J130000.2654.17J85), and Transdisciplinary Research Grant Scheme (TRGS Vot T001) under Ministry of Higher Education Malaysia (MOHE).
Citation
Alias, S.S., Harun, Z. and Abu Mansor, S. (2020), "Characterization and performance of rice husk as additive in green ceramic water filter fabricated by slip-casting", World Journal of Engineering, Vol. 17 No. 4, pp. 553-562. https://doi.org/10.1108/WJE-09-2019-0274
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited