Method for the treatment of waste water with sludge granules

The invention relates to a method for the treatment of waste water comprising an organic nutrient. According to the invention, the waste water is in a first step fed to sludge granules, after the supply of the waste water to be treated the sludge granules are fluidised in the presence of an oxygen-comprising gas, and in a third step, the sludge...

A method for removing oxo-anions and metal cations from a liquid

The present invention relates to a material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyperthermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. This method is characterized in that a...

Storage compound production by phototrophic diatoms

The invention is directed to a method for producing an enriched diatom culture, comprising subjecting a starting culture comprising one or more diatom species to selective pressure, thus giving a competitive advantage to storage compound producing species of diatoms, by subjecting said starting culture, under non-limiting bioavailable silicon...

Method for acquiring grain-shaped growth of a microorganism in a reactor

The invention relates to a method of acquiring granular growth of a microorganism in a reactor containing a liquid medium. Surprisingly, according to the invention, aerobic microorganisms also can be induced to granular growth by maintaining specific culture conditions. During a first step an oxygen-containing gas is supplied and the reactor...

Title microbial linear polysacchrides being soluble at a low pH and precipitating at a high pH

The present invention concerns a method of producing linear polysaccharides, bacteria capable of producing such linear polysaccharides, and uses of such linear polysaccharides, as a medicament, in agriculture, in food processing, as a coating, as a thickening agent, as a flocculating agent, and for water processing.

Process for selecting polyhydroxyalkanoate (PHA) producing micro-organisms

The invention relates to a process for selecting a polyhydroxyalkanoate (PHA) producing micro-organism from a natural source comprising a variety of micro-organisms, comprising steps of preparing a fermentation broth comprising the natural source and nutrients in water; creating and maintaining aerobic conditions in the fermentation broth;...

Biopolymer extraction

In a prior art reactor set up dense aggregates of microorganisms are formed, typically in or embedded in an extracellular matrix. Such may relate to granules, to sphere like entities having a higher viscosity than water, globules, a biofilm, etc. The dense aggregates comprise extracellular polymeric substances, or biopolymers, in particular...

Method for the production of polyhydroxyalkanoate

The invention relates to a method for the production of polyhydroxyalkanoate, for example from a waste stream. In a first step of this method, microorganisms are grown and in a second step polyhydroxyalkanoate is accumulated. According to the invention, the microorganisms are in a first step subjected to a selection, which selection comprises a...

Extracellular polymers from granular sludge as sizing agents

The present invention is in the field of papermaking and relates in particular to sizing paper. Problems with state of the art methods are that the sizing chemicals used are typically expensive; may be available only in limited supply; are produced using methods that are damaging to the environment; and whose production is far from carbon...

Method for obtaining an open phototrophic culture with improved storage compound production capacity

The invention is directed to a method for producing an open phototrophic culture with improved storage compound production capability. In accordance with the invention, a starting culture is submitted to selective pressure, thus giving a competitive advantage to storage compound producing species, by subjecting said starting culture to a cycle...

Method of treating ammonia-comprising waste water

The invention relates to a method of treating ammonia-comprising waste water in which the bicarbonate ion is the counter ion of the ammonium ion present in the waste water. According to the invention half the ammonium is converted into nitrite, yielding an ammonia- and nitrite-containing solution, and in the second step the nitrite is used as...

A material and a method for removing oxo-anions and metal cations from a liquid

The present invention relates to a material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyper thermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. Thi s method is characterized in that a...