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Performance and sustainability of short-rotation energy crops treated with municipal and industrial residues

Dimitriou, Ioannis (2005). Performance and sustainability of short-rotation energy crops treated with municipal and industrial residues. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2005:44
ISBN 91-576-7043-9
[Doctoral thesis]

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The sustainability of short-rotation willow coppice (SRWC) as a multifunctional system for phytoremediation—the use of plants for treatment of contaminated air, soil or water—and for producing energy biomass, was studied. SRWC is grown commercially in Sweden to produce energy biomass, nutrient-rich residues being applied as cost-efficient fertiliser to increase production. The principal residues used are municipal wastewater, landfill leachate, industrial wastewater (e.g. log-yard runoff), sewage sludge and wood-ash. Small- and large-scale experiments with residues aimed to quantify the extent of potential hazards and the performance of SRWC in reducing them. Lysimeter experiments with willow plants, intensively irrigated with N-rich municipal wastewater, showed that N-leaching is a potential threat when high N loads are applied. Experimental data from SRWC fields irrigated with municipal wastewater in central Sweden suggest that in practice, N-leaching is significantly lower, even when the N load applied is greater than the N requirements of SRWC. Growth of willow plants of five different clones in pot experiments irrigated with landfill leachate was reduced by comparison with that of control plants. The reduction was attributed to saline stress or P deficiency, and indicates that, when hazardous compounds are present in wastewater, irrigation rates should be adjusted to avoid growth reduction. Genetic differences were observed between willow clones in salt tolerance and growth performance. The careful selection of clones to suit specific situations is therefore recommended. Leaf length can be used for rapid diagnosis of stress, to permit adjustment of the irrigation rate, and thus to avoid growth reduction. Phytoremedial efficiency of SRWC is satisfactory when the concentration of hazardous compounds in wastewaters is low, as in log-yard runoff, and depends on irrigation intensity. Application of sludge–ash mixtures to SRWC is not a substantial threat to sustainability, in terms of heavy metals. Total Cd in the soil is expected to decrease after harvest, but other metals and P loads, must also be considered. Any decision concerning residue application must take into account factors such as residue composition, soil type, climate, and species or clone characteristics, if both a high growth rate of SRWC and sustainability are to be attained.

Authors/Creators:Dimitriou, Ioannis
Title:Performance and sustainability of short-rotation energy crops treated with municipal and industrial residues
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2005
Number of Pages:38
ALLI. Dimitriou, I. & Aronsson, P. 2004. Nitrogen leaching from Short-Rotation Willow Coppice after intensive irrigation with wastewater. Biomass and Bioenergy, 26(5), 433-441. II. Dimitriou, I., Aronsson, P. & Weih, M. Stress tolerance of five willow clones after irrigation with different amounts of landfill leachate. Bioresource Technology (In Press). III. Dimitriou, I., Eriksson, J., Adler, A., Aronsson, P. & Verwijst, T. Fate of heavy metals after application of sewage sludge and wood-ash mixtures to short-rotation willow coppice (submitted to Environmental Pollution). IV. Jonsson, M., Dimitriou, I., Aronsson, P. & Elowson, T. 2004. Effects of soil type, irrigation volume and plant species on treatment of log yard run-off in lysimeters. Water Research 38(16), 3473-3644. V. Jonsson, M., Dimitriou, I., Aronsson, P. & Elowson, T. Treatment of log yard run-off by irrigation of grass and willows. Environmental Pollution (In press).
Place of Publication:Uppsala
ISBN for printed version:91-576-7043-9
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:T Pollution > T01 Pollution
P Natural resources > P34 Soil biology
Subjects:Not in use, please see Agris categories
Agrovoc terms:salix, coppice system, fuel crops, clones, bioremediation, leachates, landfills, wastewater irrigation, ashes, heavy metals, sustainability
Keywords:Ash, heavy metals, landfill leachate, log-yard runoff, phytoremediation, Salix, short-rotation coppice, sludge, wastewater, willow.
Permanent URL:
ID Code:841
Department:(S) > Institutionen för lövträdsodling (960101-050630)
Deposited On:10 May 2005 00:00
Metadata Last Modified:02 Dec 2014 10:07

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