Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Khaya Senegelansis : a natural oil adsorbent for produced water treatment

11.06.2014

Instead of being just landscaping waste, the dried leaves can help environmental agencies and oil and gas companies treat waste water from petroleum extraction

The extraction process of petroleum from the ocean floor contributes to the increase in liquid waste.

Produced water contributes to about 80% of liquid waste being generated. Produced water consists mainly of heavy metals, radionuclides, oil and grease, processed chemicals, numerous types of dissolved gases, salts, solids, microorganisms, and dissolved oxygen. Oil and grease content in produced water can be divided into two types, which are dissolved oil and dispersed oil. Dissolved oils consist of benzene, etylbenzene, and xylene which are the main organic compounds in produced water.

However, dispersed oils are small droplets of oil suspended in liquid and contain fewer suntans of hydrocarbons. Untreated produced water contains numerous substances such as dispersed and dissolved oil, heavy metals, and chemicals produced can cause harm to the environment.

Dispersed oil content in produced water may vary in different oil wells. Dispersed oil in water is classified as toxicants to human beings and marine life. The dispersed oil can cause physiological damage and cause cancer in living creatures.

Over the years, numerous technologies have been established to treat dispersed oil in produced water treatment. Current treatment that is being used is by using physical method and also chemical treatment that may have a negative effect on the ecosystem.

In this research, the use of dried Khaya Senegelansis leaves was established as a natural oil adsorbent capable of absorbing dispersed oil. Khaya Senegelansis dried leaves were chosen due to its abundant availability in Malaysia. These types of trees are planted to enhance the landscape with plants and are planted all over most major urban cities. These trees play a significant role in developing a greener environment in urban areas. However, the leaves shed by the trees may be considered as waste. The leaves can be utilised by the local authorities to turn the waste into a useful product.

In this study the collected dried Khaya Senegelansis leaves were washed, dried and grounded before being mixed with synthetic produced water for 24hr. The mixed solution was than stirred by using a magnetic stirrer.

The engine oil used to be mixed in the produced water solution was SAE40 Petromas Mach 5 Mineral Engine Oil with distilled water. The results from Partition Gravimetric Method shows that the dried Khaya Senegelansis leaves are good oil sorbents due to the ability to remove 73% of oil from the solution in ambient temperature.

Images obtained from the Scanning Electron Microscope (SEM), Gemini models also proved that patches of oil appeared on the surface of the leaves after 24 hours of contact time.

This is because Khaya Senegelansis rich in phytochemical constituent which is lipophilic in nature. The constituents include flavonoids, carbohydrates, glycosides, saponins, tannins and anthraquinones. Saponins and flavonoids are the main components that contribute to oil absorption due to their lipophilic properties. A series of experiments were conducted to gauge the effects of various temperatures and oil concentration to investigate it's capability in adsorbing more oil and grease especially in produced water treatment.

The results strongly indicated that Khaya Senegelansis dried a leaf which is a naturally occurring product can be used as an environment friendly oil adsorbent.

The findings also helps the local authorities to manage landscaping waste such as the dried leaves as well as to help the oil and gas companies to have more choices in treating Produced Water.

HABSAH ALWI
Faculty of Chemical Engineering
Universiti Teknologi MARA
habsahalwi@salam.uitm.edu.my

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

Further reports about: Engineering UiTM chemicals concentration droplets ecosystem flavonoids leaf leaves salts synthetic

More articles from Ecology, The Environment and Conservation:

nachricht Reducing household waste with less energy
18.01.2017 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH

nachricht Joint research project on wastewater for reuse examines pond system in Namibia
19.12.2016 | Technische Universität Darmstadt

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: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>