BS EN 17480:2021 pdf free download – Algae and algae products一Methods for the determination of productivity of algae growth sites.
This document specifies the methods to be used for the determination of productivity of algae growth sites.
This document excludes methods for sampling, harvesting and pre-/postprocessing. Excluded as well is “wild growth”, which is defined as algae growing in nature without human interference except when harvesting the algae.
2 Normative references
The following document is referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 17399, Algae and algae products — Terms and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions in EN 17399 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
cultivation
process of maintaining, growing and harvesting algae
3.2
controlled growth
algae growing in (partly) controlled conditions
3.8
algae growth site
area of a single or multiple algae cultivation unit(s) or natural sites
3.9
production area
insolated horizontal surface of the culture medium
Note 1 to entry: The production area of non-horizontal systems could result in multi-interpretable outcomes, therefore non-horizontal systems use the volume productivity formula to calculate productivity.
Note 2 to entry: Wild growth areas are excluded.
3.10
cultivation unit area
area occupied by the cultivation unit, including equipment needed to operate the unit and service area
Note 1 to entry: The equipment is considered to be tubing and connections necessary for the specific cultivation unit to function, e.g. the area occupied by the pumps and recirculating reservoir/ degasser in a tubular photobioreactor or to fixate a rnacroalgae cultivation unit in the sea.
Note 2 to entry: Cultivation unit area does not include equipment upstream and downstream of the cultivation unit, e.g. the reservoirs for water preparation and/or harvesting.
Note 3 to entry: Service area is considered to be the area necessary for the operation of the cultivation unit, including paths needed for inspection, cleaning and maintenance.
3.11
productivity
quantity of algae produced or harvested during a specified period of time and over a specified area or volume
4 Productivity
4.1 Parameters specific to algae productivity
4.1.1 Area aspect
The type of algae, and therefore the production methods, covered by this standard are very diverse. The types of algae are specified in EN 17399. Not all production alternatives have the same prerequisites and are therefore not comparable. To help to decide whether a production method is applicable for an area calculation, and thereby an area productivity calculation, a flowchart was developed.
By going through the characteristics of the production method the indication is given, if an area definition is possible and therefore an area productivity can be calculated.
The flowchart (Figure 1) can be utilized for all algae defined (microalgae, cyanobacteria, Labyrinthulomycetes and macroalgae). Additionally explanatory notes are added.