Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Compost made of oil

27.03.2006


Solid oil waste should be processed into compost. Specialists of Kazan State University and the Open Joint-Stock Company “Nizhnekamskneft” stick to this opinion. The obtained compost is practically nontoxic, and bio-utilization of waste may be an excellent alternative to harmful waste storage and combustion.

Solid waste of petrochemical production (oil-slimes) belongs to the most persistent environment pollutants. Oil-slimes consist of oil carbohydrates and products of their processing, including asphaltic-resinous substances, as well as phenols, xylols, styrene and multiple other toxic and carcinogenic substances. Of course, oil-refining plants possess slime storage and waste disposal plants, but they do not solve the problem. Therefore, biotechnological methods of oil-slime disposal, including composting, increasingly attract specialists.

As foreign experience shows, the soil containing 3.5 percent of oil carbohydrates, can be purified via composting within 4 to 5 months, while by itself it would be purified within three years. Russian scientists have undertaken their own research.



The proving ground for them was slime accumulators of the ‘Nizhnekamskneftekhim” plant that had been duly operating for more than 40 years. For field trials, the researchers used the upper layer of oil-slime, which had been dried for a year prior to that at a special site. In May, the experimentalists formed compost beds: first, they laid a 30-centimeter layer of wood chips (wood chips representing exhaust biofilter filler material), they put oil-slime on top, then – another layer of aerating agent and a layer of oil-slime. The bed was 140 centimeters high. The site with compost beds had a small slope for redundant liquid drainage.

The slimes of the “Nizhnekamskneftekhim” enterprise are populated with their own microflora that aggressively destroys waste. Appropriate conditions were created for microbes: good airing of compost beds was ensured and nutrients – laprol production wastage– were poured on the beds. In response to the care, microorganisms destroyed major contamination within four months. 14 more months were taken up by degradation of residual, mainly hard-to-reach slime components. In a year and a half after composting had begun, oil carbohydrates concentration in the bed equaled about 12 g/kg, the initial level of contamination making more than 56 g/kg, that is, the decrease was by 85 percent. Content of stable fraction of multiring aromatic hydrocarbons reduced by 90 percent. During the year and a half, the compost toxicity sometimes reduced or sometimes slightly increased, but the final variant turned out to be quite harmless, even red radish grows upon the compost.

This is how the researchers found the way to efficiently neutralize petrochemical slime and to simultaneously utilize two more petrochemical wastes - exhaust biofilter filler material and laprol production wastage. The researchers assume that the process will be improved and they will achieve finer cleaning of petrochemical waste due to interaction of microorganisms and plants. Them the composting technology may be used for recovery of disrupted lands, scrap-heaps reclamation and forest growing on exhausted soils.

Sergey Komarov | alfa
Further information:
http://www.informnauka.ru

More articles from Ecology, The Environment and Conservation:

nachricht Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main

nachricht Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide

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: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

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

14.10.2016 | Event News

 
Latest News

IHP presents the fastest silicon-based transistor in the world

05.12.2016 | Power and Electrical Engineering

InLight study: insights into chemical processes using light

05.12.2016 | Materials Sciences

High-precision magnetic field sensing

05.12.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>