What is described is an integrated steel mill and a bioreactor configured to produce useful products from the waste stream of the steel mill. A waste gas stack which is connected to the steel mill is connected to a heat exchanger to cool the waste gas from the steel mill. The cooled gas is pressurized using a pressurization apparatus connected to the heat exchanger. The pressurized gas is sent to an oxygen removal apparatus connected to the pressurization apparatus. An oxygen depleted waste stream from the oxygen removal apparatus is passed to a bioreactor (connected to the oxygen removal apparatus) where microorganisms ferment the waste stream to products. Optional apparatus such as scrubbers, valves, buffers, are also disclosed. The products of the fermentation in the bioreactor can be ethanol and or acetate.

What is described is an integrated steel mill and a bioreactor configured to produce useful products from the waste stream of the steel mill. A waste gas stack which is connected to the steel mill is connected to a heat exchanger to cool the waste gas from the steel mill. The cooled gas is pressurized using a pressurization apparatus connected to the heat exchanger. The pressurized gas is sent to an oxygen removal apparatus connected to the pressurization apparatus. An oxygen depleted waste stream from the oxygen removal apparatus is passed to a bioreactor (connected to the oxygen removal apparatus) where microorganisms ferment the waste stream to products. Optional apparatus such as scrubbers, valves, buffers, are also disclosed. The products of the fermentation in the bioreactor can be ethanol and or acetate.

Method for the production of organic fertilizer comprising providing an organic source of ammonia gas, in particular air contaminated with ammonia gas, directing the air contaminated with ammonia gas through water and forming an ammonium hydroxide solution converting the ammonium into nitrate, dosing, under the control of a control system, the ammonium hydroxide solution to a recirculation stream from a second bio-reactor with bacteria suitable for converting the supplied ammonia into nitrite and nitrate. The amount of ammonium water fed by the control system to the acidic nitrate solution from the second bio-reactor depends on one or more measured pH values in the device.

Method for the production of organic fertilizer comprising providing an organic source of ammonia gas, in particular air contaminated with ammonia gas, directing the air contaminated with ammonia gas through water and forming an ammonium hydroxide solution converting the ammonium into nitrate, dosing, under the control of a control system, the ammonium hydroxide solution to a recirculation stream from a second bio-reactor with bacteria suitable for converting the supplied ammonia into nitrite and nitrate. The amount of ammonium water fed by the control system to the acidic nitrate solution from the second bio-reactor depends on one or more measured pH values in the device.

The present invention provides a process for the microbiological production of hydrogen from a hydrocarbon-rich deposit, said process comprising the step of modifying the composition of the deposit by the introduction into the deposit of at least one non-native hydrogen producing microorganism selected positively to diversify the microbiological abundance of hydrogen-producing microorganisms in the deposit and for the preferential production of hydrogen over methane.

The present invention provides a process for the microbiological production of hydrogen from a hydrocarbon-rich deposit, said process comprising the step of modifying the composition of the deposit by the introduction into the deposit of at least one non-native hydrogen producing microorganism selected positively to diversify the microbiological abundance of hydrogen-producing microorganisms in the deposit and for the preferential production of hydrogen over methane.

The present invention relates to a process for forming or obtaining vivianite in or from a phosphorus-containing waterbody, sediment and/or sludge, to an apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge, and to the use of a composition comprising at least one alkaline earth metal peroxide and a magnetic separating apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge.

The present invention relates to a process for forming or obtaining vivianite in or from a phosphorus-containing waterbody, sediment and/or sludge, to an apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge, and to the use of a composition comprising at least one alkaline earth metal peroxide and a magnetic separating apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge.

The present invention relates to a process for depositing at least a culture of microorganisms to an elongated element, preferably a yarn, comprising the steps of: providing at least a first feeding device comprising at least a first outlet; supplying at least one elongated element to said at least first feeding device; feeding to said first outlet at least a first culture comprising at least one microorganism; dispensing said first culture from said at least first outlet; contacting at least part of said elongated element with said first culture of microorganisms, to provide at least a part of said elongated element with an amount of said first culture of microorganisms.

The present invention relates to a process for depositing at least a culture of microorganisms to an elongated element, preferably a yarn, comprising the steps of: providing at least a first feeding device comprising at least a first outlet; supplying at least one elongated element to said at least first feeding device; feeding to said first outlet at least a first culture comprising at least one microorganism; dispensing said first culture from said at least first outlet; contacting at least part of said elongated element with said first culture of microorganisms, to provide at least a part of said elongated element with an amount of said first culture of microorganisms.