Dynamic emergy valuation of water hyacinth biomass in wetlands: an ecological approach

Abstract The water hyacinth ( Eichhornia spp), characterized by elevated growth rates, is a native aquatic weed in the Pantanal wetland and represents the main species in aquatic floating mats that are carried by the Paraguay River according to the wetland flood pulse dynamics. The floating mats have a role in nutrient cycling to consumers of detritivorous food webs, such as typical fish of the region. Nonetheless there are potentials of using water hyacinth biomass to produce biofuels and biomaterials through biomass conversion techniques like anaerobic digestion and pyrolysis. Biomass growth of water hyacinth was modeled in the floodplain of the Upper Paraguay River basin to identify the underlying dynamics by means of emergy analysis. Emergy modeling has permitted to obtain monthly unit emergy values (UEVs) useful to evaluate the economic feasibility of water hyacinth biomass use in phase with the flood pulse of the Pantanal wetland. This approach can be replicated to other natural or constructed wetlands where the aquatic weeds growth is excessive.

[1]  Elmer Ccopa Rivera,et al.  Emergy evaluation of organic and conventional marine shrimp farms in Guaraíra Lagoon, Brazil , 2012 .

[2]  H. Gonçalves,et al.  Hydrological cycle Ciclo hidrológico , 2011 .

[3]  F. Wittmann,et al.  Aquatic herbaceous plants of the Amazon floodplains: state of the art and research needed , 2010 .

[4]  Sergio Ulgiati,et al.  Energy quality, emergy, and transformity: H.T. Odum’s contributions to quantifying and understanding systems , 2004 .

[5]  Bin Chen,et al.  Emergy-based analysis of four farming systems: insight into agricultural diversification in rural China , 2012 .

[6]  I. Bianchini,et al.  Emissions of methane and carbon dioxide during anaerobic decomposition of aquatic macrophytes from a tropical lagoon (São Paulo, Brazil) , 2010 .

[7]  M. E. Galassi,et al.  Is the biomass of water hyacinth lost through herbivory in native areas important , 2010 .

[8]  Baoguo Chen,et al.  Embodied energy and emergy evaluation of a typical biodiesel production chain in China. , 2011 .

[9]  Howard T. Odum,et al.  Environmental Accounting: Emergy and Environmental Decision Making , 1995 .

[10]  T. Buchholz,et al.  Sustainability criteria for bioenergy systems: results from an expert survey , 2009 .

[11]  Cecilia Mattsson Petersen,et al.  Water hyacinths as a resource in agriculture and energy production: a literature review. , 2007, Waste management.

[12]  W. Junk,et al.  Forecasting the flood-pulse in Central Amazonia by ENSO-indices , 2007 .

[13]  Enrique Ortega,et al.  Integrated environmental assessment of biodiesel production from soybean in Brazil , 2010 .

[14]  Bin Chen,et al.  Sustainability and future alternatives of biogas-linked agrosystem (BLAS) in China: An emergy synthesis , 2012 .

[15]  Anushree Malik,et al.  Environmental challenge vis a vis opportunity: the case of water hyacinth. , 2007, Environment international.

[16]  Hanne Østergård,et al.  How to manage co-product inputs in emergy accounting exemplified by willow production for bioenergy , 2013 .

[17]  Seema Patel.  Threats, management and envisaged utilizations of aquatic weed Eichhornia crassipes: an overview , 2012, Reviews in Environmental Science and Bio/Technology.

[18]  I. Bergier,et al.  Biofuel production from water hyacinth in the Pantanal wetland , 2012 .

[19]  C. Marinho,et al.  Seasonal dynamics of methane in the water column of two subtropical lakes differing in trophic status. , 2009, Brazilian journal of biology = Revista brasleira de biologia.

[20]  S. Nielsen.  What has modern ecosystem theory to offer to cleaner production, industrial ecology and society? The views of an ecologist , 2007 .

[21]  Silvia Bargigli,et al.  An emergy evaluation of complexity, information and technology, towards maximum power and zero emissions , 2007 .

[22]  John M. Melack,et al.  An anoxic event and other biogeochemical effects of the Pantanal wetland on the Paraguay River , 1997 .

[23]  A. Bhattacharya,et al.  Water hyacinth as a potential biofuel crop. , 2010 .