Nutrient export and material recycling using aquatic plants: Lake Kitagata case study

Compositional mapping images of one garnet, Triassic paleo-geographic facies of Qiangtang, summarized published Paleozoic and Proterozoic ages in Tibetan Plateau and Himalaya, mineral compositions, and chronology data of the Baqing metamorphic rocks.

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Integrated economic model of waste management: Case study for South Moravia region

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun201361040917 ◽

2013 ◽

Vol 61 (4) ◽

pp. 917-922 ◽

Cited By ~ 1

Author(s):

Jiří Hřebíček ◽

Jiří Kalina ◽

Jana Soukopová

Keyword(s):

Waste Management ◽

Economic Model ◽

Waste Treatment ◽

Point Of View ◽

Energy Utilization ◽

Economic Point ◽

Material Recycling ◽

Management Case Study ◽

South Moravia

The paper introduces and discusses the developed integrated economic model of municipal waste management of the Czech Republic, which was developed by authors as a balanced network model for a set of sources (mostly municipalities) of municipal solid waste connected with a set of chosen waste treatment facilities processing their waste. Model is implemented as a combination of several economic submodels including environmental and economic point of view. It enables to formulate the optimisation problem in a concise way and the resulting model is easily scalable. Model involves submodels of waste prevention, collection and transport optimization, submodels of waste energy utilization (incineration and biogas plants) and material recycling (composting) and submodel of landfilling. Its size (number of sources and facilities) depends only upon available data. Its application is used in the case study of the South Moravia region with verification of using time series waste data. The results enable to improve decision making in waste management sector.

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Nutritional composition of aquatic plants and their potential for use as animal feed: A case study of the Lower Volta Basin, Ghana

Biofarmasi Journal of Natural Product Biochemistry ◽

10.13057/biofar/f160205 ◽

2018 ◽

Vol 16 (2) ◽

pp. 99-112

Author(s):

WEMEGAH JOSHUA ETSE ◽

TED Y. ANNANG ◽

JESSE S. AYIVOR

Keyword(s):

Aquatic Plants ◽

Animal Feed ◽

Standard Procedure ◽

Sediment Quality ◽

Nutritional Composition ◽

Control Site ◽

Panicum Maximum ◽

Volta Basin ◽

Significant Difference

Etse WJ, Annang T, Ayivor JS. 2018. Nutritional composition of aquatic plants and their potential for use as animal feed: a case study of the Lower Volta Basin, Ghana. Biofarmasi J Nat Prod Biochem 9: 99-112. The study was conducted to determine the nutritional composition of selected dominant aquatic plants and their significant effect on the chemical and physical characteristics of the water. Aquatic plants namely Nymphaea lotus, Typha australis, Ipomoea aquatica, and Scirpus cubensis were collected, identified and authenticated at the Ghana Herbarium. The proximate nutritional compositions of these plants were measured using the standard procedure outlined in the Association of Official Analytical Chemist (AOAC 2002). Water and sediment quality analyses of some physicochemical variables were also carried out using processes described in the standard methods for water and wastewater examination. The results showed that nutrient composition such as the crude protein, ether extracts, ash content, and nitrogen-free extracts was significantly higher than the corresponding constituents in Panicum maximum used as a control for the study. The findings also indicated that levels of heavy metals in all plants fell within the WHO/FAO standards for metals in vegetables and food. The effects of the physicochemical parameter of water also revealed that pH, nitrate, turbidity, DO, and BOD levels were found significantly different from the control site. The level of heavy metal in the sediment samples revealed significant variations in the distribution of the metals, with Zn showing the most significant difference and Pb the least with a mean level of 7.5±0.86 mg/L and 0.4±0.03 mg/L respectively. These plant species suggests having a high nutritive potential and indicates their possible use as mixed ingredients in animal feed. Exploitation of these aquatic plants for animal feed would be a step towards better utilization of these plants help in the management of aquatic plants within the basin.

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