The Experts below are selected from a list of 2253 Experts worldwide ranked by ideXlab platform
Pietro Santamaria - One of the best experts on this subject based on the ideXlab platform.
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Posidonia residues can be used as organic mulch and soil amendment for lettuce and tomato production
Agronomy for Sustainable Development, 2014Co-Authors: Francesco Grassi, Carlo Mininni, Angelo Parente, Marcello Mastrorilli, Angelo Santino, Marcello Scarcella, Pietro SantamariaAbstract:There is a need for sustainable fertilizers because common mineral fertilizers are increasingly costly and often induce water and air pollution. For instance, seagrass compost could be used as fertilizer in the coastal areas of the Mediterranean, thus also solving the issue of beached residues. Here, we studied organic fertilization by application of seagrass-based compost in a tomato and lettuce crop succession. Composts were made of posidonia and Yard Wastes at 1/4 w/w fresh weight ratio. Compost was applied at two concentrations: 10 and 20 Mg ha−1 fresh weight. Fresh leaves of posidonia were also tested directly as organic mulch in plots treated with conventional fertilizers. A control treatment involved mineral fertilization without mulching soil. Herbicide applications were performed in non-mulched plots immediately before transplanting of tomato and lettuce for controlling the weeds, while mulched treatments did not receive any herbicide application. Results show that 20 Mg ha−1 of posidonia-based compost is equivalent to the inorganic fertilization because the nutritional status and yield of tomato and lettuce were statistically similar. No phytotoxicity symptoms were observed in any of the tomato and lettuce plants mulched with posidonia. The same growth rate was observed for tomato and lettuce growing under conventional management practices: mineral fertilizer and herbicide applications. Overall, our findings show that seagrass-based compost is a promising, sustainable fertilizer for tomato and lettuce.
Dan Brown - One of the best experts on this subject based on the ideXlab platform.
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solid state anaerobic co digestion of Yard waste and food waste for biogas production
Bioresource Technology, 2013Co-Authors: Dan Brown, Yebo LiAbstract:Food and Yard Wastes are available year round at low cost and have the potential to complement each other for SS-AD. The goal of this study was to determine optimal feedstock/effluent (F/E) and food waste/Yard waste mixing ratios for optimal biogas production. Co-digestion of Yard and food waste was carried out at F/E ratios of 1, 2, and 3. For each F/E ratio, food waste percentages of 0%, 10%, and 20%, based on dry volatile solids, were evaluated. Results showed increased methane yields and volumetric productivities as the percentage of food waste was increased to 10% and 20% of the substrate at F/E ratios of 2 and 1, respectively. This study showed that co-digestion of food waste with Yard waste at specific ratios can improve digester operating characteristics and end performance metrics over SS-AD of Yard waste alone.
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solid state anaerobic co digestion of Yard waste and food waste for biogas production
Bioresource Technology, 2013Co-Authors: Dan BrownAbstract:Food and Yard Wastes are available year round at low cost and have the potential to complement each other for SS-AD. The goal of this study was to determine optimal feedstock/effluent (F/E) and food waste/Yard waste mixing ratios for optimal biogas production. Co-digestion of Yard and food waste was carried out at F/E ratios of 1, 2, and 3. For each F/E ratio, food waste percentages of 0%, 10%, and 20%, based on dry volatile solids, were evaluated. Results showed increased methane yields and volumetric productivities as the percentage of food waste was increased to 10% and 20% of the substrate at F/E ratios of 2 and 1, respectively. This study showed that co-digestion of food waste with Yard waste at specific ratios can improve digester operating characteristics and end performance metrics over SS-AD of Yard waste alone.
Francesco Grassi - One of the best experts on this subject based on the ideXlab platform.
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Posidonia residues can be used as organic mulch and soil amendment for lettuce and tomato production
Agronomy for Sustainable Development, 2014Co-Authors: Francesco Grassi, Carlo Mininni, Angelo Parente, Marcello Mastrorilli, Angelo Santino, Marcello Scarcella, Pietro SantamariaAbstract:There is a need for sustainable fertilizers because common mineral fertilizers are increasingly costly and often induce water and air pollution. For instance, seagrass compost could be used as fertilizer in the coastal areas of the Mediterranean, thus also solving the issue of beached residues. Here, we studied organic fertilization by application of seagrass-based compost in a tomato and lettuce crop succession. Composts were made of posidonia and Yard Wastes at 1/4 w/w fresh weight ratio. Compost was applied at two concentrations: 10 and 20 Mg ha−1 fresh weight. Fresh leaves of posidonia were also tested directly as organic mulch in plots treated with conventional fertilizers. A control treatment involved mineral fertilization without mulching soil. Herbicide applications were performed in non-mulched plots immediately before transplanting of tomato and lettuce for controlling the weeds, while mulched treatments did not receive any herbicide application. Results show that 20 Mg ha−1 of posidonia-based compost is equivalent to the inorganic fertilization because the nutritional status and yield of tomato and lettuce were statistically similar. No phytotoxicity symptoms were observed in any of the tomato and lettuce plants mulched with posidonia. The same growth rate was observed for tomato and lettuce growing under conventional management practices: mineral fertilizer and herbicide applications. Overall, our findings show that seagrass-based compost is a promising, sustainable fertilizer for tomato and lettuce.
Yebo Li - One of the best experts on this subject based on the ideXlab platform.
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solid state anaerobic co digestion of Yard waste and food waste for biogas production
Bioresource Technology, 2013Co-Authors: Dan Brown, Yebo LiAbstract:Food and Yard Wastes are available year round at low cost and have the potential to complement each other for SS-AD. The goal of this study was to determine optimal feedstock/effluent (F/E) and food waste/Yard waste mixing ratios for optimal biogas production. Co-digestion of Yard and food waste was carried out at F/E ratios of 1, 2, and 3. For each F/E ratio, food waste percentages of 0%, 10%, and 20%, based on dry volatile solids, were evaluated. Results showed increased methane yields and volumetric productivities as the percentage of food waste was increased to 10% and 20% of the substrate at F/E ratios of 2 and 1, respectively. This study showed that co-digestion of food waste with Yard waste at specific ratios can improve digester operating characteristics and end performance metrics over SS-AD of Yard waste alone.
Amimul Ahsan - One of the best experts on this subject based on the ideXlab platform.
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environmental performance and energy recovery potential of five processes for municipal solid waste treatment
Journal of Cleaner Production, 2015Co-Authors: Hassan A Arafat, Kenan Jijakli, Amimul AhsanAbstract:In this study, the environmental impacts were assessed for five municipal solid waste (MSW) treatment processes with energy recovery potential. The life cycle assessment (LCA) tool was used to quantify the environmental impacts. The five processes considered are incineration, gasification, anaerobic digestion, bio-landfills, and composting. In addition, these processes were compared to recycling where applicable. In addition to environmental impacts quantification, the energy production potentials for the five processes were compared to provide a thorough assessment. To maximize the future applicability of our findings, the analyses were based on the waste treatment technologies as they apply to individual waste streams, but not for a specific MSW mixture at a particular location. Six MSW streams were considered; food, Yard, plastic, paper, wood and textile Wastes. From an energy recovery viewpoint, it was found that it is best to recycle paper, wood and plastics; to anaerobically digest food and Yard Wastes; and to incinerate textile waste. On the other hand, the level of environmental impact for each process depends on the considered impact category. Generally, anaerobic digestion and gasification were found to perform better environmentally than the other processes, while composting had the least environmental benefit.
