Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Wastewater treatment and concrete construction chemical produced using a new process

Preparation of sodium aluminate from basic aluminium sulphate
Water and shelter, two of the fundamental needs for human life and the provision of both is tied to the commercially important chemical sodium aluminate (NaAlO2).

Sodium aluminate is commonly used in waste water treatment plants to remove suspended solids, some metals and dissolved silica. In construction, sodium aluminate is used during cold weather to accelerate the solidification of concrete. Other areas where sodium aluminate is used include paper production, refractory bricks and alumina production.

The most common methods used to prepare solid sodium aluminate utilise an initial step to give an aqueous sodium aluminate solution. Solid sodium aluminate is yielded by drying.

In this work by César A. Contreras, Satoshi Sugita and Esthela Ramos, researchers from Universidad de Guanajuato in Mexico, the preparation of sodium aluminate was investigated using basic aluminium sulphate (BAS) as a precursor. This latter compound was obtained by homogeneous precipitation of aluminium sulphate aqueous solution using ammonium bisulfite as a precipitant. In the next step of the process, the preparation of sodium dawsonite was investigated by treating BAS with a sodium carbonate aqueous solution. Finally, this latter compound was heated at different temperatures to determine the formation temperature of sodium aluminate.

The researchers found that this method could be used to obtain crystalline sodium aluminate by heating sodium dawsonite at 900°C for 30 minutes.

Dr. Ian Birkby | EurekAlert!
Further information:

More articles from Life Sciences:

nachricht Aquaculture: Clear Water Thanks to Cork
28.10.2016 | Technologie Lizenz-Büro (TLB) der Baden-Württembergischen Hochschulen GmbH

nachricht Bioluminescent sensor causes brain cells to glow in the dark
28.10.2016 | Vanderbilt University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Novel light sources made of 2D materials

Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.

So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Steering a fusion plasma toward stability

28.10.2016 | Power and Electrical Engineering

Bioluminescent sensor causes brain cells to glow in the dark

28.10.2016 | Life Sciences

Activation of 2 genes linked to development of atherosclerosis

28.10.2016 | Life Sciences

More VideoLinks >>>