Potential for bioenergy generation and nutrient recycling in horticultural crop production systems in New Zealand

被引:0
|
作者
Kerckhoffs, L. H. J. [1 ]
Renquist, R. [2 ]
机构
[1] Massey Univ, Inst Agr & Environm, Palmerston North, New Zealand
[2] Bioenergy Cropping Solut Ltd, Palmerston North, New Zealand
来源
XXIX INTERNATIONAL HORTICULTURAL CONGRESS ON HORTICULTURE: SUSTAINING LIVES, LIVELIHOODS AND LANDSCAPES (IHC2014): INTERNATIONAL SYMPOSIA ON WATER, ECO-EFFICIENCY AND TRANSFORMATION OF ORGANIC WASTE IN HORTICULTURAL PRODUCTION | 2016年 / 1112卷
关键词
biogas; anaerobic digestion; closed-loop nitrogen system; renewable energy; sustainable production; digestate;
D O I
10.17660/ActaHortic.2016.1112.43
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Renewable energy can be produced from a number of sources, including plant biomass. One of the most efficient technologies to generate bioenergy from plant biomass is on-farm anaerobic digestion (AD) producing biogas. Biogas can be used as an equal substitute to natural gas for industrial, commercial and residential use, and/or can be converted to electricity, heat or vehicle fuel using established technologies. Using purified biogas for transport is a highly effective greenhouse gas mitigation strategy. Various organic feed stocks can be converted into biogas: we have identified a large variety of purpose-grown bioenergy crop species (such as Jerusalem artichoke, forage sorghum, whole triticale) under New Zealand conditions, but feedstocks can also include farm and orchard waste streams (reject fruit, clippings, thinning and so on), groundcover biomass and other locally sourced organic municipal and industrial bio-waste as well. A novel biofuel cropping system was developed based on AD technology. It makes full use of the nutrients in the digestate with a unique closed-loop nutrient supply feature that conserves nutrients in the feedstock and recycles them back to the farm and orchard as bio-fertiliser. This eliminates the need for external fertilizer. This paper will explore the considerable potential for bioenergy generation and nutrient recycling in horticultural production systems in New Zealand.
引用
收藏
页码:321 / 325
页数:5
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