FABRICATION OF WATER FILTER FROM RICE HUSK WASTE PRODUCT VIA COLD ISOSTATIC PRESSING (CIP) METHOD

Oct 28, 2026

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The study fabricates a silica-based water filter from rice husk (RH) waste using the Cold Isostatic Pressing (CIP) method. RH waste is burned at 550 °C to generate black RH ash containing abundant amorphous silica, then compounded with porcelain and PVA binders at 78, 84, and 88 wt.% silica. Mixtures are pressed by CIP at 8 kPa, molded with rubber plastic, and sintered at 1200 °C. SEM analysis characterizes pore structure while bulk density and apparent porosity are recorded, indicating the 78 wt.% composition yields the best performance.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages10

Reading Time25 min

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Abstract

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Introduction

FABRICATION OF WATER FILTER FROM RICE HUSK WASTE PRODUCT VIA COLD ISOSTATIC PRESSING (CIP) METHOD Muhammad Firdaus Muslem, Sufizar Ahmad*, Syahmie Sufi Shukor, Fazimah Mat Noor, Azham Azmi, Hamimah Abd Rahman and Azzura Ismail Department of Manufacturing Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia *[sufizar@uthm.edu.my](sufizar@uthm.edu.my) Abstract. Many researchers are interested in exploring the practical ways to expand the usage of RH waste. The objective of fabricating the silica water filter is to remove contaminants from the well water. The fabrication process involves burning Rice Husk (RH) waste at 550 °C, which produces black RH ash that contains a generous amount of amorphous silica. The silica water filter was fabricated with varying the compositions of silica rice husks which were 78 wt.%, 84 wt.%, and 88 wt.% . Porcelain and PVA has been added in the mixture and acting asa binder. The mixture of amorphous silica and binders have been used to fabricate the silica water filter by using Cold Isostatic Pressing (CIP) method. The CIP pressure used was 8 kPa and the mold used was rubber plastic. After compaction using the CIP method, the samples were sintered at a temperature of 1200 °C. The results obtained from the Scanning Electron Microscope (SEM) analysis provide visual insights into the pore structure of the sample under examination. Apparent porosity, and bulk density were recorded for each sample. The results obtained for the composition of 78 wt.%, 84 wt.% and 88 wt.% for the bulk density are 0.43861 g/cm3,0 .3729 g/cm3 and 0.35143 g/cm3, respectively. The result for apparent porosity for every composition of 78 wt.%, 84 wt.% and 88 wt.% are 54%, 60% and 68%, respectively. The results indicate that the 78 wt.% silica composition produces the best silica water filter. Overall, our findings demonstrate a promising approach for repurposing RH waste and producing a sustainable water filtration solution. Keywords: Amorphous, sintering, porosity, density, pore Article Info Received 20th January 2023 Accepted 15th October 2023 Published 20th December 2023 Copyright Malaysian Journal of Microscopy (2023) . All rights reserved. ISSN: 1823-7010, eISSN: 2600-7444 Introduction The trend towards waste reuse and cost reduction in industrial processes has led to the utilization of Rice Husk (RH) as a value-added resource. RH and black RH ash have been found to be suitable for various residential and industrial applications. In this study, we conducted a comprehensive investigation of the characteristics and industrial uses of RH in response to its increasing demand and significance. Our research findings indicate that rice husk (RH) holds great promise for future applications, potentially extending its utilization to new locations and expanding its range of uses. Overall, this paper provides valuable insights into the potential benefits and opportunities associated with the utilization of RH as a valuable resource. Researchers are increasingly interested in studying the potential benefits of abundant Rice Husk (RH) and finding appropriate methods to increase its utilization while reducing waste generated by paddy agriculture. RH can be effectively transformed into fuel and fertilizer, offering numerous advantages. Unfortunately, RH is often undervalued by farmers due to its low market value, leading to the underutilization of this waste material. As a result, the waste generated by paddy crops remains abundant and largely unutilized. RH recycling aims to conserve limited resources by reusing materials or finding sustainable substitutes to study the fundamental of water filter. The relative amount of silica was increased after burning out the RH at different times and temperatures. A 95% silica powder could be produced after heat-treating at 700 ºC for 6 hours [1]. During the combustion of rice hu

FAQs

How is the silica water filter fabricated in this study?

Rice husk waste is burned at 550 °C to produce black RH ash rich in amorphous silica. The ash is mixed with porcelain and PVA binders, pressed using CIP at 8 kPa, and sintered at 1200 °C.

What silica compositions were tested and what effect did they have?

Filters were made with silica contents of 78, 84, and 88 wt.%. Bulk density decreased from 0.43861 to 0.35143 g/cm³, while apparent porosity increased from 54% to 68% across the compositions.

Which composition produced the best silica water filter results?

The 78 wt.% silica composition produced the best silica water filter performance, based on the reported bulk density and apparent porosity results.

Oct 28, 2026

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