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 Bioinvasion on the rise
15.02.2017 | Universität Konstanz

nachricht Litter Levels in the Depths of the Arctic are On the Rise
10.02.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

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: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>