Reducing Ammonia Losses By Adding FeCI3 During Composting Of Sewage Sludge

The release of ammonia nitrogen during composting of sewage sludge mixed with a lignocellulosic bulking agent leads to a reduction in the agronomic value of the final compost and to harmful effects on the environment. We propose adding a cheap salt FeCl3 which can be used without special precaution to reduce ammonia losses by decreasing pH conditions. An in-vessel co-composting experiment was conducted in a large reactor (100 L) in which FeCl3 was added to sludge mixed with a bulking agent (pine shavings and sawdust) and compared with a control mixture without FeCl3. Temperature, oxygen consumption and pH were monitored throughout the composting of both mixtures. The final balance of organic matter, organic and inorganic nitrogen permitted to conclude that the addition of FeCl3 reduced nitrogen loss (by a factor of 2.4 in relation to the control) and increased mineralisation of the organic nitrogen by 1.6

Uncovering the minor contribution of land-cover change in upland forests to the net carbon footprint of a boreal hydroelectric reservoir

Hydropower in boreal conditions is generally considered the energy source emitting the least greenhouse gas per kilowatt-hour during its life cycle. The purpose of this study was to assess the relative contribution of the land-use change on the modification of the carbon sinks and sources following the flooding of upland forested territories to create the Eastmain-1 hydroelectric reservoir in Quebec’s boreal forest using Carbon Budget Model of the Canadian Forest Sector. Results suggest a carbon sink loss after 100 yr of 300,000 ± 100,000 Mg CO2 equivalents (CO2e). A wildfire sensitivity analysis revealed that the ecosystem would have acted as a carbon sink as long as <75% of the territory had burned over the 100-yr-long period. Our long-term net carbon flux estimate resulted in emissions of 4 ± 2 g CO2e kWh−1 as a contribution to the carbon footprint calculation, one-eighth what was obtained in a recent study that used less precise and less sensitive estimates. Consequently, this study significantly reduces the reported net carbon footprint of this reservoir and reveals how negligible the relative contribution of the land-use change in upland forests to the total net carbon footprint of a hydroelectric reservoir in the boreal zone can be

Répercussions d’une enfance vécue en institution : le cas des Enfants de Duplessis

Les conséquences négatives d’un placement en institution sur les enfants ont été documentées, mais aucune étude n’a porté sur les orphelins et les enfants placés une fois devenus adultes. Au Québec, les Enfants de Duplessis offrent un témoignage poignant des répercussions à long terme d’une enfance vécue en institution. Les histoires recueillies auprès de 40 hommes et 41 femmes ayant grandi en institution à l’époque de Duplessis font état d’un nombre élevé d’abus et d’expériences adverses, incluant les agressions physiques, psychologiques et sexuelles. Le milieu était peu stimulant et offrait peu d’opportunités de développer des relations d’attachement positives et significatives. Lorsqu’ils sont appariés et comparés à des adultes provenant de l’enquête Santé-Québec, les Enfants de Duplessis devenus adultes rapportent plus de problèmes de santé liés au stress et une détresse psychologique plus importante. Nos résultats indiquent également que les personnes ayant disposé de peu de ressources et d’aptitudes personnelles dans l’enfance sont les plus affectées par les expériences adverses.Whereas the immediate consequences of institutionalized placements on children have been documented, no study has investigated adults who were raised in orphanages or institutions. In Quebec, les enfants de Duplessis offer a unique testimony of the long term consequences of an institutionalized childhood. Stories collected from 40 men and 41 women who grew up in institution in Duplessis’era indicate a high number of abuse and aversive experiences, including physical, psychological and sexual aggressions. In addition, the environment was poor in stimulation and opportunities to develop positive attachment relationships with adults. When matched and compared to adults from the Santé-Québec survey, les enfants de Duplessis report a higher number of health problems associated with stress and more psychological distress. Moreover, our results indicate that those who had fewer strengths and aptitudes in childhood are the most affected by unfavourable experiences.Se han documentado las consecuencias negativas del ingreso de los niños a una institución, pero ningún estudio trata acerca de los adultos que fueron internados cuando eran niños o quedaron huérfanos. En Quebec los niños de Duplessis son un testimonio desgarrador de las repercusiones a largo plazo de una infancia vivida en una institución. Las historias recopiladas de 40 hombres y 41 mujeres que crecieron en una institución en la época de Duplessis constatan el número elevado de abusos y experiencias adversas, incluyendo agresiones físicas, psicológicas y sexuales. El medio era poco estimulante y ofrecía pocas oportunidades de desarrollar relaciones de apego positivas y significativas. Al emparejarlos y compararlos a los adultos provenientes de la encuesta de Salud Quebec, los niños de Duplessis, quienes ya son adultos, reportan más problemas de salud relacionados al estrés y un desasosiego psicológico más importante. Nuestros resultados indican también que las personas que disponen de pocos recursos y aptitudes personales en su infancia son las más afectadas por las experiencias adversas.As conseqüências negativas de uma internação em instituição sobre as crianças foram documentadas, mas nenhum estudo foi realizado sobre os órfãos e as crianças internadas quando já se tornaram adultas. No Quebec, as “crianças de Duplessis” testemunham de maneira profunda das repercussões a longo prazo de uma infância vivida em instituição. As histórias recolhidas junto a 40 homens e 41 mulheres que cresceram em instituição na época do governo de Duplessis relatam um alto número de abusos e de experiências adversas, incluindo agressões físicas, psicológicas e sexuais. O meio era pouco estimulante e oferecia poucas oportunidades de desenvolver relações de apego positivas e significativas. Quando eles foram colocados lado a lado e comparados aos adultos vindos da pesquisa de Santé-Québec, as “crianças de Duplessis” que se tornaram adultas sofrem mais de problemas de saúde ligados ao estresse e a uma depressão psicológica mais importante. Nossos resultados indicam igualmente que as pessoas que dispuseram de poucos recursos e aptidões pessoais na infância são mais afetadas pelas experiências adversas

Les expériences vécues par les enfants de Duplessis institutionnalisés : les conséquences après plus de 50 ans

Dans cet article, les auteurs présentent les résultats qualitatifs recueillis à partir de questionnaires et d’entrevues semi-structurées destinés à documenter les expériences tant actuelles que passées des enfants de Duplessis institutionnalisés (EDI). Des exemples typiques et deux cas représentatifs sont présentés. Les résultats indiquent que les abus et la négligence subis par les EDI pendant l’enfance ont compromis leur ajustement psychosocial à long terme. Ils révèlent aussi que les EDI qui ont rapporté au moins quatre forces pendant leur enfance étaient plus susceptibles d’être protégés à l’âge adulte contre les effets négatifs de leur placement.In this article, the authors present qualitative results, derived from questionnaires and semi-structured interviews, to describe past and present experiences of the Duplessis children. Examples representative of their experience and a detailed description of two cases are provided. Results indicate that childhood abuse and negligence are related to poorer long-term psychological adjustment. The findings also demonstrate that reporting at least four strengths in childhood can have long-term protective effects.En este artículo, los autores presentan los resultados cualitativos recopilados a partir de cuestionarios y entrevistas semiestructuradas destinadas a documentar las experiencias, tanto recientes como pasadas, de los niños de Duplessis que fueron institucionalizados (EDI). Se presentan ejemplos típicos y dos casos representativos. Los resultados indican que los abusos y la negligencia sufridos por los EDI durante la infancia han comprometido su ajuste psicosocial a largo plazo. También revelan que los EDI que han reportado al menos cuatro fuerzas durante su infancia eran más susceptibles de estar protegidos en la edad adulta contra los efectos negativos de su colocación.Neste artigo, os autores apresentam os resultados qualitativos coletados a partir de questionários e entrevistas semi-estruturadas destinados a documentar as experiências tanto atuais quanto passadas das crianças de Duplessis institucionalizadas (CDI). São apresentados exemplos típicos e dois casos representativos. Os resultados indicam que os abusos e a negligência sofridos pelas CDI durante a infância comprometeram seu ajuste psicossocial a longo prazo. Eles revelam também que as CDI que relataram, pelo menos, quatro aspectos positivos durante sua infância eram mais susceptíveis de ser protegidas durante a idade adulta contra os efeitos negativos de sua internação

F.A.R.O.G. FORUM, Vol. 2 No. 9

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