ABSTRACT A new, non-pathogenic bioaugmentation product was formulated specifically for underground use in South African mines, using local bacterial isolates. This was designed for the remediation of various hydrocarbons via biochemical breakdown by sub-surface microorganisms. The active microorganisms were isolated from hydrocarbon-polluted areas of a gold mine. Many commercially available bioaugmentation products are already in existence however, all, to our knowledge, have been developed and tested primarily for use in the northern hemisphere. None have been formulated and tested in Africa. Our series of bacterial isolates are the first to be isolated from mine soils for hydrocarbon biodegradation purposes. Such isolates have further, not previously been tested on sub-surface contamination. The safety associated with the use of such a product in a closed mine-environment is of paramount importance. Initial batch-flask experiments were conducted using a readily-available commercial bioremediation product. This was tested on simple surfactant molecules and compared to the biodegradation observed under standard waste water treatment plant conditions. The bioremediation product increased biodegradation by 6% on average. Bacteria in the product were identified by 16S rDNA gene sequence analysis and found to be homologous to potentially pathogenic Bacillus cereus, known especially to effect immunocompromised individuals, this was of particular concern in the closed mine system. South African isolates were sourced from various hydrocarbon-polluted sources, with six bacteria ultimately being selected from deep sub-surface mine soil and water samples. The ability of these isolates to biodegrade waterborne monograde engine oil was assessed via GC-FID. The isolate showing average percentage growth increase, homologous to Pseudomonas pseudoalcaligenes, was found to degrade the motor oil by 98%. The new isolates were, on average, 16% more efficient at biodegrading petroleum hydrocarbons than the commercial bioremediation product isolates. Formulation of these isolates into the first commercially-available South African developed and tested bioaugmentation product will prove a successful conclusion to this study.

Anionic surfactants are wildly used in many industrial and household applications. Because anionic surfactants are used so widely, significant attention has focused on the removal of these contaminants from wastewater. Among various treatment techniques, biofiltration, such as trickling filter technologies, has been employed in many wastewater treatment plants (WWPTs) to remove anionic surfactants. However, current knowledge of the efficacy of trickling filter to remove anionic surfactants from wastewaters is limited. The present study characterized the performance of a high rate (i.e. roughing) trickling filter to remove anionic surfactants both at lab-scale and pilot-scale. Lab-scale tests investigated the biodegradation of anionic surfactants under controllable conditions were compared with those from previous studies by others. Pilot-scale tests investigated the efficacy of a trickling filter at removing anionic surfactants from a wastewater over an extended period of time. The data from the pilot-scale tests were used to model the performance of trickling filter at removing anionic surfactants from the wastewater, using first order and modified Velz models. The lab-scale tests indicated that high molecular weight anionic surfactants degrade faster than the low molecular weight surfactants. The biodegradation rates observed in the present study were similar to those from pervious studies by others. The pilot-scale tests indicated that roughing trickling filter could remove 11% to 29% of anionic surfactants and 4% to 22% of COD from the wastewater. Higher molecular weight anionic surfactants were more degradable. The experimental data could be accurately modeled using the modified Velz model (R² value more than 0.9). The degradation rates of modified Velz model for total anionic surfactants, high molecular weight anionic surfactants and COD were 0.053±0.0057, 0.088±0.0048 and 0.119±0.0111 (mIs)0.5 respectively. The pilot-scale test results indicated that a high rate (i.e., roughing) trickling filter was not capable of effectively removing anionic surfactants in the primary effluent at Lions Gate WWTP because a relatively large trickling filter area would be required to achieve the required surfactant removal efficiency.

Anionic surfactants are wildly used in many industrial and household applications. Because anionic surfactants are used so widely, significant attention has focused on the removal of these contaminants from wastewater. Among various treatment techniques, biofiltration, such as trickling filter technologies, has been employed in many wastewater treatment plants (WWPTs) to remove anionic surfactants. However, current knowledge of the efficacy of trickling filter to remove anionic surfactants from wastewaters is limited. The present study characterized the performance of a high rate (i.e. roughing) trickling filter to remove anionic surfactants both at lab-scale and pilot-scale. Lab-scale tests investigated the biodegradation of anionic surfactants under controllable conditions were compared with those from previous studies by others. Pilot-scale tests investigated the efficacy of a trickling filter at removing anionic surfactants from a wastewater over an extended period of time. The data from the pilot-scale tests were used to model the performance of trickling filter at removing anionic surfactants from the wastewater, using first order and modified Velz models. The lab-scale tests indicated that high molecular weight anionic surfactants degrade faster than the low molecular weight surfactants. The biodegradation rates observed in the present study were similar to those from pervious studies by others. The pilot-scale tests indicated that roughing trickling filter could remove 11% to 29% of anionic surfactants and 4% to 22% of COD from the wastewater. Higher molecular weight anionic surfactants were more degradable. The experimental data could be accurately modeled using the modified Velz model (R² value more than 0.9). The degradation rates of modified Velz model for total anionic surfactants, high molecular weight anionic surfactants and COD were 0.053±0.0057, 0.088±0.0048 and 0.119±0.0111 (mIs)0.5 respectively. The pilot-scale test results indicated that a high rate (i.e., roughing) trickling filter was not capable of effectively removing anionic surfactants in the primary effluent at Lions Gate WWTP because a relatively large trickling filter area would be required to achieve the required surfactant removal efficiency.

Anionic surfactants are wildly used in many industrial and household applications. Because anionic surfactants are used so widely, significant attention has focused on the removal of these contaminants from wastewater. Among various treatment techniques, biofiltration, such as trickling filter technologies, has been employed in many wastewater treatment plants (WWPTs) to remove anionic surfactants. However, current knowledge of the efficacy of trickling filter to remove anionic surfactants from wastewaters is limited. The present study characterized the performance of a high rate (i.e. roughing) trickling filter to remove anionic surfactants both at lab-scale and pilot-scale. Lab-scale tests investigated the biodegradation of anionic surfactants under controllable conditions were compared with those from previous studies by others. Pilot-scale tests investigated the efficacy of a trickling filter at removing anionic surfactants from a wastewater over an extended period of time. The data from the pilot-scale tests were used to model the performance of trickling filter at removing anionic surfactants from the wastewater, using first order and modified Velz models. The lab-scale tests indicated that high molecular weight anionic surfactants degrade faster than the low molecular weight surfactants. The biodegradation rates observed in the present study were similar to those from pervious studies by others. The pilot-scale tests indicated that roughing trickling filter could remove 11% to 29% of anionic surfactants and 4% to 22% of COD from the wastewater. Higher molecular weight anionic surfactants were more degradable. The experimental data could be accurately modeled using the modified Velz model (R² value more than 0.9). The degradation rates of modified Velz model for total anionic surfactants, high molecular weight anionic surfactants and COD were 0.053±0.0057, 0.088±0.0048 and 0.119±0.0111 (mIs)0.5 respectively. The pilot-scale test results indicated that a high rate (i.e., roughing) trickling filter was not capable of effectively removing anionic surfactants in the primary effluent at Lions Gate WWTP because a relatively large trickling filter area would be required to achieve the required surfactant removal efficiency. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

Submitted by Vanessa Lopes Pires Reátegui (nessa-lopes@hotmail.com) on 2018-06-22T18:38:53Z No. of bitstreams: 1 Trabalho aplicado_Vanessa_Lopes_Pires_Reategui.pdf: 447121 bytes, checksum: 3fc5d1af4cd21f19517ce9d0f7267606 (MD5) / Approved for entry into archive by Simone de Andrade Lopes Pires (simone.lopes@fgv.br) on 2018-06-25T16:47:23Z (GMT) No. of bitstreams: 1 Trabalho aplicado_Vanessa_Lopes_Pires_Reategui.pdf: 447121 bytes, checksum: 3fc5d1af4cd21f19517ce9d0f7267606 (MD5) / Approved for entry into archive by Suzane Guimarães (suzane.guimaraes@fgv.br) on 2018-06-26T12:11:01Z (GMT) No. of bitstreams: 1 Trabalho aplicado_Vanessa_Lopes_Pires_Reategui.pdf: 447121 bytes, checksum: 3fc5d1af4cd21f19517ce9d0f7267606 (MD5) / Made available in DSpace on 2018-06-26T12:11:01Z (GMT). No. of bitstreams: 1 Trabalho aplicado_Vanessa_Lopes_Pires_Reategui.pdf: 447121 bytes, checksum: 3fc5d1af4cd21f19517ce9d0f7267606 (MD5) Previous issue date: 2018-06-20 / Os cursos denominados MBA no Brasil foram construídos nos moldes do MBA americano, mas, com características particulares ao cenário brasileiro. Estes cursos possuem extensa literatura de avaliação, tanto positivas, sobre os seus impactos, como avaliações críticas com relação ao modelo. Entretanto, no Brasil, há poucos estudos e análises referentes a este programa, seja nos aspectos objetivos ou nos aspectos subjetivos. Este trabalho teve como objetivo avaliar o impacto dos cursos de MBA, pós-graduação lato sensu, na remuneração e na promoção dos ex-alunos formados entre 2012 e 2017, da Fundação Getulio Vargas em São Paulo. As hipóteses testadas foram confirmadas, uma vez que foram encontrados efeitos significantes de 23,63% de aumento na média salarial dos formados em relação ao seu salário anterior ao MBA e de 14,54% na renda mensal atual em relação a renda atual mais provável dos egressos se eles não tivessem cursado o MBA. Foi observada também, uma migração dos ex-alunos de cargos mais baixos (nível de entrada) para cargos mais altos (média gerencia) e de média gerencia para nível executivo, confirmando assim a segunda hipótese desta pesquisa. Dentro deste contexto, foram avaliadas a influência da experiência e do ano de formação do MBA sobre a renda atual, sendo que a primeira impactou a renda, tendo o resultado evidenciado que existe uma correlação entre renda e experiência. Em relação ao tempo de formação, em termos de diferencial de salário, foi observado que houve maior impacto para quem se formou há mais tempo (2012-2015), uma vez que os formados em curto prazo (2016- 2017) obtiveram diferença salarial menos significante. Nos aspectos relacionados ao desempenho no trabalho, todos os resultados foram positivos, havendo a percepção do ex-aluno do desenvolvimento de maiores habilidades, liderança e eficácia de seu trabalho em relação a outros sem um MBA. Finalmente, para mais de 80% dos respondentes os cursos de MBA têm impacto positivo sobre o emprego, contrariamente a percepção sobre o aumento salarial e/ou promoção, cuja maioria entendeu não ser positiva. / The courses called MBA's in Brazil were built according to the American MBA, but with particular characteristics to the Brazilian scenario. These courses have an extensive evaluation literature, both positive about their impacts and critical evaluations of the model. However, in Brazil, there are few studies and analyzes related to this program, either in the objective aspects or in the subjective aspects. This study aimed to evaluate the impact of MBA courses, lato sensu graduate, on the remuneration and promotion of alumni graduated between 2012 and 2017, of the Getulio Vargas Foundation in São Paulo. The hypotheses tested were confirmed, since there were significant effects of 23.63% increase in the average salary of graduates in relation to their pre-MBA salary and 14.54% in the current monthly income in relation to the most probable current income of the graduates if they had not taken the MBA. A migration of lower-entry (entry level) students to higher positions (middle management) and middle management to executive level was also observed, confirming the second hypothesis of this research. From this context, the influence of the experience and the year of MBA training on current income were evaluated, and the first one impacted the income, with the result evidenced that there is a correlation between income and experience. Regarding the training time, in terms of salary differential, it was observed that there was a greater impact for those who graduated the most (2012-2015), since those graduated in the short term (2016-2017) obtained a lower salary difference significant. In the aspects related to the performance in the work, all the results were positive, having the ex-student's perception of the development of greater abilities, leadership and effectiveness of his work in relation to others without an MBA. Finally, for more than 80% of the respondents, MBA courses have a positive impact on employment, contrary to the perception about the increase in wages and / or promotion, which the majority considered not to be positive.

Submitted by Julia Fernandes Personini Cruz (julia_personini@yahoo.com.br) on 2013-04-19T14:53:15Z No. of bitstreams: 1 Dissertação_Julia_Cruz_versão_entrega.pdf: 1224972 bytes, checksum: d19c961b95dd8872146189949ab8cb6d (MD5) / Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-04-19T14:58:54Z (GMT) No. of bitstreams: 1 Dissertação_Julia_Cruz_versão_entrega.pdf: 1224972 bytes, checksum: d19c961b95dd8872146189949ab8cb6d (MD5) / Made available in DSpace on 2013-04-19T15:17:59Z (GMT). No. of bitstreams: 1 Dissertação_Julia_Cruz_versão_entrega.pdf: 1224972 bytes, checksum: d19c961b95dd8872146189949ab8cb6d (MD5) Previous issue date: 13-04-12 / A economia brasileira está crescendo e a demanda por gestores tem se intensificado no País. Com o intuito de formar líderes e de atender à necessidade de conhecimentos em gestão, surge uma grande variedade de cursos de pós-graduação em administração – os MBAs –, com base no modelo norte-americano, mas com características particulares à realidade brasileira. Entretanto, enquanto, nos Estados Unidos, se observa vasta literatura de avaliação dos MBAs, no Brasil, faltam estudos que avaliem a capacidade desses cursos em promover o desenvolvimento profissional e contribuir para a evolução da carreira de seus alunos. Os poucos estudos nesse sentido concentram-se exclusivamente nos impactos objetivos do curso na carreira, como salário e cargo. Por outro lado, as trajetórias de carreira têm se tornado mais fluidas e flexíveis. Nesse contexto, surge, entre outros, o conceito de carreira sem fronteiras, que destaca os aspectos subjetivos da carreira, como a motivação, satisfação e mobilidade, por exemplo. Este trabalho é um estudo tipo survey, com o objetivo de levantar a percepção de alunos e ex-alunos sobre o impacto dos cursos MBA em suas carreiras. Ele foi conduzido com alunos prestes a concluírem o curso e ex-alunos de três diferentes cursos de MBA brasileiros, de uma mesma instituição, a Fundação Getulio Vargas. Observou-se que esses profissionais percebem impactos positivos dos cursos em suas carreiras. Entre eles, percebem-se com maior intensidade impactos subjetivos, relacionados ao sentimento do indivíduo em relação à própria carreira e sua evolução. Este estudo identifica, interpreta e discute tais impactos e sua relação com a teoria de carreiras sem fronteiras.

The diploma thesis is focused on surfactants as compounds of fire fighting foams. Fire fighting foams have several characteristics including foaming, aquatic toxicity and biodegradability, which cause the environmental impact. This diploma thesis deals with the contamination of the soil by the large amount of the extinguishing water. The experimental part of the diploma thesis describes the determination of surfactants by the mobile analysis and the measurement of the methylene blue index.

Este trabalho elabora um Método para a construção do perfil profissiográfico do egresso de cursos superiores de Administração, para servir de instrumento do planejamento didático. Após o estabelecimento do modelo conceitual do Método, e dos passos para sua aplicação, Método é testado em uma Instituição de Ensino Superior real, e um perfil profissiográfico é obtido para esta instituição. Em seguida, o perfil passa pelos critérios de validação, estabelecidos no modelo conceitual: comparação com perfis obtidos por outras pesquisas; comparação com outros perfis profissiográficos; e opinião de especialistas. / The study develops a Method to the elaboration of the professional profile of the egress of Management Undergraduate courses, as a didactic planning tool. After establishing the Methods conceptual model, as well as the steps of its implementation, the Method is tested in a real Management Undergraduate Institution, and a professional profile is accomplished for this institution. Then the profile is validated by the criteria established in the conceptual model: comparisons with profiles obtained by other researches, comparison with profiles from other institutions, and experts opinions.

Este trabalho elabora um Método para a construção do perfil profissiográfico do egresso de cursos superiores de Administração, para servir de instrumento do planejamento didático. Após o estabelecimento do modelo conceitual do Método, e dos passos para sua aplicação, Método é testado em uma Instituição de Ensino Superior real, e um perfil profissiográfico é obtido para esta instituição. Em seguida, o perfil passa pelos critérios de validação, estabelecidos no modelo conceitual: comparação com perfis obtidos por outras pesquisas; comparação com outros perfis profissiográficos; e opinião de especialistas. / The study develops a Method to the elaboration of the professional profile of the egress of Management Undergraduate courses, as a didactic planning tool. After establishing the Methods conceptual model, as well as the steps of its implementation, the Method is tested in a real Management Undergraduate Institution, and a professional profile is accomplished for this institution. Then the profile is validated by the criteria established in the conceptual model: comparisons with profiles obtained by other researches, comparison with profiles from other institutions, and experts opinions.