• Energy Research

Wastewater treatment plant sludge valorization in co-digestion with biomass wastes to produce bioenergy and biochars. 4. International Symposium on Innovation and Technology in the Phosphate Industry (SYMPHOS 2017)

Wastewater treatment plant sludge valorization in co-digestion with biomass wastes to produce bioenergy and biochars. 4. International Symposium on Innovation and Technology in the Phosphate Industry (SYMPHOS 2017)

World population is growing and fertilizers are one of the most important elements for agriculture to insure global food security. Nitrogen (N), phosphorus (P) and potassium (K) are three major elements required for the growth of plants. However, the latter consumes only a little part (30–60% N, 10–20% P, 30–50% K) and the rest is lost in the environment (volatilization, leaching or fixation) causing environmental and economic damages. That’s why researchers have paid great attention to develop eco-friendly fertilizers “Controlled release fertilizers”. The aim of our project is to improve the eco-efficiency of OCP fertilizers (NPK) using wastes and biomasses. In the present work, we design a new generation of OCP fertilizers with controlled release, water adsorption and microorganisms’ encapsulation, using biopolymers resulting from Moroccan wastes available in large quantities and at low costs. We investigate the effect of coating technologies on biopolymers properties and determine the key parameters which influence nutritive elements release in soil, the seed germination yield and the plants growth.

World population is growing and fertilizers are one of the most important elements for agriculture to insure global food security. Nitrogen (N), phosphorus (P) and potassium (K) are three major elements required for the growth of plants. However, the latter consumes only a little part (30–60% N, 10–20% P, 30–50% K) and the rest is lost in the environment (volatilization, leaching or fixation) causing environmental and economic damages. That’s why researchers have paid great attention to develop eco-friendly fertilizers “Controlled release fertilizers”. The aim of our project is to improve the eco-efficiency of OCP fertilizers (NPK) using wastes and biomasses. In the present work, we design a new generation of OCP fertilizers with controlled release, water adsorption and microorganisms’ encapsulation, using biopolymers resulting from Moroccan wastes available in large quantities and at low costs. We investigate the effect of coating technologies on biopolymers properties and determine the key parameters which influence nutritive elements release in soil, the seed germination yield and the plants growth.

Este artigo pretende expor algumas reflexões sobre "política urbana e desenvolvimento sustentável", ocorridos durante os seminários de Cadastro Público Brasileiro, na disciplina "Estatuto da Cidade e o Plano Diretor" do curso de graduação em arquitetura e Urbanismo da Universidade Federal de Santa Catarina (ECV/UFSC). Apresentando questões críticas e reflexões sobre as políticas urbanas, pois freqüentemente, a prática não reflete a teoria nem as leis determinantes do processo; causando dicotomias e desigualdades sociais. Ao conceituar sustentabilidade dentro das políticas públicas, percebemos a dificuldade de colocar em prática as determinações legais, sempre esbarrando no interesse político que desvirtua as ações efetivas da política pública. Mas, a gestão democrática é o direito da sociedade, que deve exigir do poder público políticas urbanas sustentáveis e promover assim o bem estar social e o direito a cidade. // This article is to present some reflections on "sustainable development and urban policy", occurred during the seminars Brazilian Public Registry, in the discipline "and the Statute of the City Master Plan" of the undergraduate course in Architecture and Urbanism, Federal University of Santa Catarina (ECV / UFSC). Introducing critical issues and reflections on urban policies, because often the practice does not reflect the theory nor the determinants of the laws, causing social inequalities and dichotomies. By conceptualizing sustainability within public policies, we see the difficulty of putting into practice the legal requirements, always bumping into the political interest which undermines the effective actions of public policy. But the democratic management of society is the right that the government should require sustainable urban policies and thus promote the welfare and right to the city.

Este artigo pretende expor algumas reflexões sobre "política urbana e desenvolvimento sustentável", ocorridos durante os seminários de Cadastro Público Brasileiro, na disciplina "Estatuto da Cidade e o Plano Diretor" do curso de graduação em arquitetura e Urbanismo da Universidade Federal de Santa Catarina (ECV/UFSC). Apresentando questões críticas e reflexões sobre as políticas urbanas, pois freqüentemente, a prática não reflete a teoria nem as leis determinantes do processo; causando dicotomias e desigualdades sociais. Ao conceituar sustentabilidade dentro das políticas públicas, percebemos a dificuldade de colocar em prática as determinações legais, sempre esbarrando no interesse político que desvirtua as ações efetivas da política pública. Mas, a gestão democrática é o direito da sociedade, que deve exigir do poder público políticas urbanas sustentáveis e promover assim o bem estar social e o direito a cidade. // This article is to present some reflections on "sustainable development and urban policy", occurred during the seminars Brazilian Public Registry, in the discipline "and the Statute of the City Master Plan" of the undergraduate course in Architecture and Urbanism, Federal University of Santa Catarina (ECV / UFSC). Introducing critical issues and reflections on urban policies, because often the practice does not reflect the theory nor the determinants of the laws, causing social inequalities and dichotomies. By conceptualizing sustainability within public policies, we see the difficulty of putting into practice the legal requirements, always bumping into the political interest which undermines the effective actions of public policy. But the democratic management of society is the right that the government should require sustainable urban policies and thus promote the welfare and right to the city.