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 Analytical lamps monitor air pollution in cities
26.05.2015 | Heraeus Noblelight GmbH

nachricht Nordic forests under pressure
26.05.2015 | International Institute for Applied Systems Analysis (IIASA)

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: Advance in regenerative medicine

The only professorship in Germany to date, one master's programme, one laboratory with worldwide unique equipment and the corresponding research results: The University of Würzburg is leading in the field of biofabrication.

Paul Dalton is presently the only professor of biofabrication in Germany. About a year ago, the Australian researcher relocated to the Würzburg department for...

Im Focus: Basel Physicists Develop Efficient Method of Signal Transmission from Nanocomponents

Physicists have developed an innovative method that could enable the efficient use of nanocomponents in electronic circuits. To achieve this, they have developed a layout in which a nanocomponent is connected to two electrical conductors, which uncouple the electrical signal in a highly efficient manner. The scientists at the Department of Physics and the Swiss Nanoscience Institute at the University of Basel have published their results in the scientific journal “Nature Communications” together with their colleagues from ETH Zurich.

Electronic components are becoming smaller and smaller. Components measuring just a few nanometers – the size of around ten atoms – are already being produced...

Im Focus: IoT-based Advanced Automobile Parking Navigation System

Development and implementation of an advanced automobile parking navigation platform for parking services

To fulfill the requirements of the industry, PolyU researchers developed the Advanced Automobile Parking Navigation Platform, which includes smart devices,...

Im Focus: First electrical car ferry in the world in operation in Norway now

  • Siemens delivers electric propulsion system and charging stations with lithium-ion batteries charged from hydro power
  • Ferry only uses 150 kilowatt hours (kWh) per route and reduces cost of fuel by 60 percent
  • Milestone on the road to operating emission-free ferries

The world's first electrical car and passenger ferry powered by batteries has entered service in Norway. The ferry only uses 150 kWh per route, which...

Im Focus: Into the ice – RV Polarstern opens the arctic season by setting course for Spitsbergen

On Tuesday, 19 May 2015 the research icebreaker Polarstern will leave its home port in Bremerhaven, setting a course for the Arctic. Led by Dr Ilka Peeken from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) a team of 53 researchers from 11 countries will investigate the effects of climate change in the Arctic, from the surface ice floes down to the seafloor.

RV Polarstern will enter the sea-ice zone north of Spitsbergen. Covering two shallow regions on their way to deeper waters, the scientists on board will focus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International symposium: trends in spatial analysis and modelling for a more sustainable land use

20.05.2015 | Event News

15th conference of the International Association of Colloid and Interface Scientists

18.05.2015 | Event News

EHFG 2015: Securing health in Europe. Balancing priorities, sharing responsibilities

12.05.2015 | Event News

 
Latest News

Researchers develop intelligent handheld robots

27.05.2015 | Power and Electrical Engineering

"Hidden" fragrance compound can cause contact allergy

27.05.2015 | Health and Medicine

Supernovas help 'clean' galaxies

27.05.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>