Showing papers by "Andy Shilton published in 2012"
TL;DR: Research that enhances the understanding of how to maximise phosphorus uptake and harvest yields; and further add value to the biomass for reuse would see the recovery of phosphorus via plants become an important solution in the future.
98 citations
TL;DR: It appears that the aerators are mixing the influent into the bulk flow effectively in the front end of the lagoon and that there was no evidence of any substantive short-circuiting path of concentrated tracer around to the outlet.
10 citations
01 Jan 2012
TL;DR: In this article, the authors show that CH4 emissions from milk and feed wastes (which enter effluent ponds along with washdown manure) are significant, and that the contribution of feed and milk wastes could potentially double the New Zealand GHG Inventory's current estimate.
Abstract: Effluent ponds on dairy farms are a source of methane (CH4); a powerful greenhouse gas (GHG). In the New Zealand GHG Inventory, effluent pond CH4 emissions are currently solely attributed to manure washed-down into ponds during milking. Using samples collected from a research dairy farm in New Zealand, we show that CH4 emissions from milk and feed wastes (which enter effluent ponds along with washdown manure) are significant. The contribution of milk and feed wastes could potentially double the Inventory's current estimate of total CH4 emissions from dairy effluent ponds. Our estimates can be considered as conservative given the increasing trend in feed-pad usage in New Zealand, which will mean that more feed wastes, in addition to more manure, will enter effluent ponds on dairy farms in the near-future. It is therefore concluded that further research into accurately establishing the full extent of GHG emissions from this sector, which has been previously overlooked, is warranted.