Biofilter - Revision history

Rasmus: fixed internal link

2017-05-16T15:12:35Z

fixed internal link

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	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==
	*matrix materials: [[Wood Chips\|wood chips]] or [[wood wool]]; [[hemp]] shiv; shredded [[cattails]];[[biochar]]		*matrix materials: [[Wood Chips\|wood chips]] or [[Wood Wool\|wood wool]]; [[hemp]] shiv; shredded [[cattails]]; [[biochar]]
	*fans to move air, ducting		*fans to move air, ducting
	*moisture control system (spray nozzles, drip)		*moisture control system (spray nozzles, drip)

Rasmus: /* Materials Needed (and Product Ecology) */

2016-08-31T14:08:51Z

Materials Needed (and Product Ecology)

← Older revision		Revision as of 14:08, 31 August 2016
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	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==
	*[[Wood Chips\|wood chips]] or ~~shredded~~ wood ~~for the matrix~~; [[hemp]] shiv; [[~~biochar~~]]; ~~shredded~~ [[~~cattails~~]]		*matrix materials: [[Wood Chips\|wood chips]] or [[wood wool]]; [[hemp]] shiv; shredded [[cattails]];[[biochar]]
	*fans to move air, ducting		*fans to move air, ducting
	*moisture control system (spray nozzles, drip)		*moisture control system (spray nozzles, drip)
	*monitoring/management mechanism (either human or machine)		*monitoring/management mechanism (either human or machine)
	*ultimate disposal of the material: use in compost or ~~for combustion~~ (after drying); good to locate biofilter in proximity to these other uses		*ultimate disposal of the material: use in compost or to be combusted (after drying); good to locate biofilter in proximity to these other uses
	*air biofilters may use up a lot of water (through evaporation) and this should be factored in (cost, infrastructure, etc.). There is the potential for using wastewater from other processes to achieve moisture maintenance ([[~~aquaponics~~]] wastewater, [[~~greywater~~]], etc.)		*air biofilters may use up a lot of water (through evaporation) and this should be factored in (cost, infrastructure, etc.). There is the potential for using wastewater from other processes to achieve moisture maintenance ([[greywater]], wastewater from [[aquaponics]], etc.)

	==Management Issues==		==Management Issues==

Rasmus: int. links

2016-08-31T07:46:11Z

int. links

← Older revision		Revision as of 07:46, 31 August 2016
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	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==
	*wood chips or shredded wood for the matrix; [[hemp]] shiv; [[biochar]]; shredded [[cattails]]		*[[Wood Chips\|wood chips]] or shredded wood for the matrix; [[hemp]] shiv; [[biochar]]; shredded [[cattails]]
	*fans to move air, ducting		*fans to move air, ducting
	*moisture control system (spray nozzles, drip)		*moisture control system (spray nozzles, drip)
	*monitoring/management mechanism (either human or machine)		*monitoring/management mechanism (either human or machine)
	*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses		*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses
	*air biofilters may use up a lot of water (through evaporation) and this should be factored in (cost, infrastructure, etc.). There is the potential for using wastewater from other processes to achieve moisture maintenance (aquaponics wastewater, greywater, etc.)		*air biofilters may use up a lot of water (through evaporation) and this should be factored in (cost, infrastructure, etc.). There is the potential for using wastewater from other processes to achieve moisture maintenance ([[aquaponics]] wastewater, [[greywater]], etc.)

	==Management Issues==		==Management Issues==

Rasmus: + int link

2016-08-31T02:06:50Z

+ int link

← Older revision		Revision as of 02:06, 31 August 2016
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	==Pioneering work at New Alchemy Institute==		==Pioneering work at New Alchemy Institute==
	In the 1980s, [https://en.wikipedia.org/wiki/New_Alchemy_Institute New Alchemy Institute] experimented with composting inside a greenhouse. The goal was to use the heat and capture the CO2 released from the composting process to heat up the greenhouse and enrich the air with CO2 for more rapid growth. This worked amazingly well but they noticed that the compost sometimes produced bad odors that made it unpleasant to work in the greenhouse. The problem was solved by venting air from the compost and piping it into soil under slight pressure. The soil microbes acted as a biofilter, trapping the smells. Potential airborne pathogens may also be trapped and eliminated in this way. For more information about the NAI Composting Greenhouse, read the [http://newalchemists.net/portfolio/compost-greenhouse/ report], published in 1986 (internal copy [http://opensourceecology.org/wiki/File:Nai-res-rpt-3-compost-gh-edit-pictures1.pdf here])		In the 1980s, [https://en.wikipedia.org/wiki/New_Alchemy_Institute New Alchemy Institute] experimented with composting inside a greenhouse. The goal was to use the heat and capture the CO2 released from the composting process to heat up the greenhouse and [[CO2 Enrichment\|enrich the air with CO2]] for more rapid growth. This worked amazingly well but they noticed that the compost sometimes produced bad odors that made it unpleasant to work in the greenhouse. The problem was solved by venting air from the compost and piping it into soil under slight pressure. The soil microbes acted as a biofilter, trapping the smells. Potential airborne pathogens may also be trapped and eliminated in this way. For more information about the NAI Composting Greenhouse, read the [http://newalchemists.net/portfolio/compost-greenhouse/ report], published in 1986 (internal copy [http://opensourceecology.org/wiki/File:Nai-res-rpt-3-compost-gh-edit-pictures1.pdf here])

	==Specific Applications==		==Specific Applications==

Rasmus: /* Links */

2016-04-16T19:50:58Z

Links

← Older revision		Revision as of 19:50, 16 April 2016
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	*The soil biofilter is actually an older idea - see [https://patents.google.com/patent/US2793096A/en US Patent # 2,793,096] from 1957.		*The soil biofilter is actually an older idea - see [https://patents.google.com/patent/US2793096A/en US Patent # 2,793,096] from 1957.
	*Cornell University: [http://compost.css.cornell.edu/odors/odortreat.html "Odor Treatment - Biofiltration"]		*Cornell University: [http://compost.css.cornell.edu/odors/odortreat.html "Odor Treatment - Biofiltration"]
			*No Tech Magazine: [http://www.notechmagazine.com/2016/03/how-to-build-a-biosand-water-filter-using-a-wood-mold.html "How to Build a Biosand Water Filter Using a Wood Mold"]
	[[Category:Food and Agriculture]]		[[Category:Food and Agriculture]]
	[[Category: Materials]]		[[Category: Materials]]

Rasmus: /* Specific Applications */

2016-04-16T15:58:06Z

Specific Applications

← Older revision		Revision as of 15:58, 16 April 2016
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	*vented gases from [[silage]] => air biofilter		*vented gases from [[silage]] => air biofilter
	*CO2-rich off-gas from a [[biogas]] facility => air biofilter, then greenhouse		*CO2-rich off-gas from a [[biogas]] facility => air biofilter, then greenhouse
	*exhaust from combustion may also be treated in this way. Some ~~juristictions~~ may have strict emissions regulations that do not allow for open combustion and release. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)		*exhaust from combustion may also be treated in this way. Some jurisdictions may have strict emissions regulations that do not allow for open combustion and release. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)
	*aquaponics: the wastewater from a fish tank (pond) can be ~~upcycled~~ in a plant-based stage ~~such as~~ [[duckweed]], [[azolla]] or [[cattails]]. Alternatively, a biofilter may also be used (pros and cons to each approach).		*aquaponics: the wastewater from a fish tank (pond) can be used in a plant-based stage for growing [[duckweed]], [[azolla]], [[cattails]] and other plants. Alternatively, a biofilter may also be used (pros and cons to each approach).

	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==

Rasmus at 19:27, 14 March 2016

2016-03-14T19:27:22Z

← Older revision		Revision as of 19:27, 14 March 2016
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	==Specific Applications==		==Specific Applications==
	*~~vented air~~ from ~~[[silage]], [[biogas]]~~ facility~~, compost~~ or animal ~~facilities~~ is pumped into an air biofilter		* odors from composting facility or animal housing is pumped into an air biofilter
	*~~to scrub~~ methane emissions from lifestock manure (see references [http://www.umanitoba.ca/faculties/afs/ncle/pdf/Report_biofilter_Apr_18_final.pdf] and [https://www.researchgate.net/publication/257015717_Biofiltration_of_methane_emissions_from_a_dairy_farm_effluent_pond]).		*methane emissions from lifestock manure can also be scrubbed in this way (see references [http://www.umanitoba.ca/faculties/afs/ncle/pdf/Report_biofilter_Apr_18_final.pdf] and [https://www.researchgate.net/publication/257015717_Biofiltration_of_methane_emissions_from_a_dairy_farm_effluent_pond]).
	*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)		*vented gases from [[silage]] => air biofilter
	*aquaponics: the wastewater ~~coming out of~~ a fish tank (pond) can be upcycled in a plant-based stage such as [[duckweed]] or [[~~azolla~~]]. Alternatively, a biofilter may also be used (pros and cons to each approach).		*CO2-rich off-gas from a [[biogas]] facility => air biofilter, then greenhouse
			*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion and release. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)
			*aquaponics: the wastewater from a fish tank (pond) can be upcycled in a plant-based stage such as [[duckweed]], [[azolla]] or [[cattails]]. Alternatively, a biofilter may also be used (pros and cons to each approach).

	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==
	*wood chips or shredded wood for the matrix; [[hemp]] shiv; [[biochar]]; shredded cattails		*wood chips or shredded wood for the matrix; [[hemp]] shiv; [[biochar]]; shredded [[cattails]]
	*fans to move air, ducting		*fans to move air, ducting
	*moisture control system (spray nozzles, drip)		*moisture control system (spray nozzles, drip)
	*monitoring/management mechanism (either human or machine)		*monitoring/management mechanism (either human or machine)
	*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses		*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses
	*air biofilters may use up a lot of water (through evaporation) and ~~therefore offer~~ potential for using wastewater from other processes ~~for~~ moisture maintenance (aquaponics wastewater, greywater, etc.)		*air biofilters may use up a lot of water (through evaporation) and this should be factored in (cost, infrastructure, etc.). There is the potential for using wastewater from other processes to achieve moisture maintenance (aquaponics wastewater, greywater, etc.)

	==Management Issues==		==Management Issues==
	Being a biological system, the biofilter has to be carefully managed. With an air biofilter, the large amounts of air pumped through it may put the system at risk of drying out. Moisture has to be monitored and maintained (e.g. with spray nozzles). Another risk is compaction, when the matrix is laid down too tightly for air to pass through. The possibility of system failure (fan failure, pump failure, etc.) has to be taken into consideration.		Being a biological system, the biofilter has to be carefully managed. With an air biofilter, the large amounts of air pumped through it may put the system at risk of drying out. Moisture has to be monitored and maintained (e.g. with spray nozzles, drip irrigation, etc.). Another risk is compaction, when the matrix is laid down too tightly for air to pass through. The possibility of system failure (fan failure, pump failure, etc.) has to be taken into consideration.

	==Videos (University of Minnessota)==		==Videos (University of Minnessota)==

Rasmus: new section: Management Issues

2016-03-14T13:55:48Z

new section: Management Issues

← Older revision		Revision as of 13:55, 14 March 2016
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	*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses		*ultimate disposal of the material: use in compost or for combustion (after drying); good to locate biofilter in proximity to these other uses
	*air biofilters may use up a lot of water (through evaporation) and therefore offer potential for using wastewater from other processes for moisture maintenance (aquaponics wastewater, greywater, etc.)		*air biofilters may use up a lot of water (through evaporation) and therefore offer potential for using wastewater from other processes for moisture maintenance (aquaponics wastewater, greywater, etc.)

			==Management Issues==
			Being a biological system, the biofilter has to be carefully managed. With an air biofilter, the large amounts of air pumped through it may put the system at risk of drying out. Moisture has to be monitored and maintained (e.g. with spray nozzles). Another risk is compaction, when the matrix is laid down too tightly for air to pass through. The possibility of system failure (fan failure, pump failure, etc.) has to be taken into consideration.

	==Videos (University of Minnessota)==		==Videos (University of Minnessota)==

Rasmus: /* Specific Applications */

2016-03-14T13:41:38Z

Specific Applications

← Older revision		Revision as of 13:41, 14 March 2016
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	==Specific Applications==		==Specific Applications==
	*vented air from [[silage]], [[biogas]] facility, compost or animal facilities is pumped into an air biofilter		*vented air from [[silage]], [[biogas]] facility, compost or animal facilities is pumped into an air biofilter
			*to scrub methane emissions from lifestock manure (see references [http://www.umanitoba.ca/faculties/afs/ncle/pdf/Report_biofilter_Apr_18_final.pdf] and [https://www.researchgate.net/publication/257015717_Biofiltration_of_methane_emissions_from_a_dairy_farm_effluent_pond]).
	*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)		*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)
	*aquaponics: the wastewater coming out of a fish tank (pond) can be upcycled in a plant-based stage such as [[duckweed]] or [[azolla]]. Alternatively, a biofilter may also be used (pros and cons to each approach).		*aquaponics: the wastewater coming out of a fish tank (pond) can be upcycled in a plant-based stage such as [[duckweed]] or [[azolla]]. Alternatively, a biofilter may also be used (pros and cons to each approach).

Rasmus: /* Specific Applications */

2016-03-13T15:03:19Z

Specific Applications

← Older revision		Revision as of 15:03, 13 March 2016
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	*vented air from [[silage]], [[biogas]] facility, compost or animal facilities is pumped into an air biofilter		*vented air from [[silage]], [[biogas]] facility, compost or animal facilities is pumped into an air biofilter
	*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)		*exhaust from combustion may also be treated in this way. Some juristictions may have strict emissions regulations that do not allow for open combustion. The filtered exhaust may then be clean enough to be used for CO2 enrichment in a greenhouse; examples are feed ([[duckweed]], [[azolla]], etc.) or biomass (bamboo, cattails, hemp, etc.)
			*aquaponics: the wastewater coming out of a fish tank (pond) can be upcycled in a plant-based stage such as [[duckweed]] or [[azolla]]. Alternatively, a biofilter may also be used (pros and cons to each approach).

	==Materials Needed (and Product Ecology)==		==Materials Needed (and Product Ecology)==