Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Eco-pottery product from water treatment sludge

23.07.2014

Sludge obtained from water treatment plants were studied as suitable materials to be used in the pottery industry to make suitable pottery products.

Sludge is a by-product of water treatment. Sludge is produced during the clarification and filtration process in the water treatment system. It is also produced from the accumulated solids removed from sedimentation basin or settling tank.


Pottery making in Sarawak, Malaysia

Copyright : Colin Charles / Flickr

The increasing number of water treatment plants has led to a considerable increase in sludge generation. The disposal of sludge from water treatment operations poses a problem in Malaysia.

The problem is acute because of the scarcity of space to store the sludge. The advantage of water sludge is that it is not considered as hazardous waste.

The objective of this project is to reduce the environmental impact generated by the sludge coming from the Water Treatment Plant (WTP), through a new sludge management concept that introduces a method that re-uses sludge as raw material for the structural pottery industry.

Pottery is the type of ceramic material, which the American Society for Testing and Materials (ASTM) has defined as wall fired ceramic wares that contain clay when formed except technical, structural and refractory product.

The term pottery is also used for a technique involving ceramic, where clay is mixed with other minerals and is formed into objects, including vessels generally designed for utilitarian purposes.

Ceramics have characteristics that enable them to be used in a wide variety of applications including i) high heat capacity and low heat conductivity, ii) corrosion resistance, iii) electrically insulating, semi-conducting, or super conducting, iv) non-magnetic and magnetic, and v) hard and strong, but brittle.

The Eco-pottery is made from water treatment sludge. During the process, the organic substances in the sludge were eliminated through burning, while the heavy metals were safely contained in the product.

Furthermore, energy is saved during the production process since sludge is used as combustion during the burning process. Technically the Eco-pottery has demonstrated that the WTP sludge could be viably used in the mixture to produce pottery. The chemical composition, the energy properties of the sludge and the mineral contained in the sludge were analysed in a laboratory.

Chemical composition is vital because of its effect on the product behaviour. X-ray Fluorescence (XRF) and Total Nitrogen Measurement (TNM) determined the chemical composition of water treatment sludge.

The physical characteristics of the sludge were also tested. The test conducted is moisture content and plasticity of the sludge. The mineral compositions were determined by X-ray Diffraction (XRD) was silica, kaolinite, muscovite, iron oxide and iron hydrogen phosphate.

Water treatment sludge contained high concentration of free silica. The Eco-pottery was made using throwing technique. The samples are then pressed into mould to make prismatic bar each mark with 100mm measurement. Linear shrinkage was determined by measuring the length of the samples before and after the firing stage using a calliper with a precision of ±0.01 mm. Water absorption was done according to the Malaysian Standard, MS ISO 10545-3:2001. Firing properties were obtained by observing whether potteries resistant to low and high temperature.

The results show that water treatment sludge can be used as raw materials in the production of pottery products. This will provide reuse option to water treatment sludge.


FOR MORE INFORMATION :

Azinoor Azida Binti Abu Bakar
Marfiah Ab. Wahid
Faizah Kamarudin
Institute of Infrastructure, Engineering & Sustainable Management (IIESM)
University Teknologi MARA, Malaysia.
Email : azinoor@salam.uitm.edu.my

Darmarajah Nadarajah | Research SEA News
Further information:
http://www.uitm.edu.my
http://www.researchsea.com

Further reports about: Eco-pottery UiTM characteristics iron oxide pottery water treatment

More articles from Ecology, The Environment and Conservation:

nachricht Environmental DNA uncovers biodiversity in rivers
30.08.2016 | Universität Zürich

nachricht New approach for environmental test on livestock drugs
27.07.2016 | Universität Zürich

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Virtual Reality: 3D Human Body Reconstruction from Fraunhofer HHI digitizes Human Beings

Scientists at the Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI have developed a method by which the realistic image of a person can be transmitted into a virtual world. The 3D Human Body Reconstruction Technology captures real persons with multiple cameras at the same time and creates naturally moving dynamic 3D models. At this year’s trade fairs IFA in Berlin (Hall 11.1, Booth 3) and IBC in Amsterdam (Hall 8, Booth B80) Fraunhofer HHI will show this new technology.

Fraunhofer HHI researchers have developed a camera system that films people with a perfect three-dimensional impression. The core of this system is a stereo...

Im Focus: Streamlining accelerated computing for industry

PyFR code combines high accuracy with flexibility to resolve unsteady turbulence problems

Scientists and engineers striving to create the next machine-age marvel--whether it be a more aerodynamic rocket, a faster race car, or a higher-efficiency jet...

Im Focus: X-ray optics on a chip

Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.

In the latest issue of Acta Crystallographica Section A: Foundations and Advances , Sarah Hoffmann-Urlaub and Tim Salditt report the fabrication and testing of...

Im Focus: Piggyback battery for microchips: TU Graz researchers develop new battery concept

Electrochemists at TU Graz have managed to use monocrystalline semiconductor silicon as an active storage electrode in lithium batteries. This enables an integrated power supply to be made for microchips with a rechargeable battery.

Small electrical gadgets, such as mobile phones, tablets or notebooks, are indispensable accompaniments of everyday life. Integrated circuits in the interiors...

Im Focus: UCI physicists confirm possible discovery of fifth force of nature

Light particle could be key to understanding dark matter in universe

Recent findings indicating the possible discovery of a previously unknown subatomic particle may be evidence of a fifth fundamental force of nature, according...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

The energy transition is not possible without Geotechnics

25.08.2016 | Event News

New Ideas for the Shipping Industry

24.08.2016 | Event News

A week of excellence: 22 of the world’s best computer scientists and mathematicians in Heidelberg

12.08.2016 | Event News

 
Latest News

Cancer: Molecularly shutting down cancer cachexia

31.08.2016 | Life Sciences

Robust fuel cell heating unit developed

31.08.2016 | Power and Electrical Engineering

Algorithms Offer Insight into Cellular Development

31.08.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>