C. V. Rodrigues

Chelating agents EDTA and oxalic acid for enhanced Fenton treatment of landfill leachate at neutral pH

Jonas Marques André Filho, Deize Dias Lopes, C. V. Rodrigues

Sanitary landfill leachate is a complex effluent characterized by high concentrations of recalcitrant organic matter, particularly humic substances, and ammoniacal nitrogen. Among Advanced Oxidation Processes (AOPs), the Fenton process (FP) is effective for the degradation of refractory compounds; however, its application is …

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Magnetic fields in the Southern Coalsack and beyond

M. J. F. Versteeg, Y. Angarita, A. M. Magalhães, M. Haverkorn et autres

Starlight polarimetry, when combined with accurate distance measurements, allows for exploration of the three-dimensional structure of local magnetic fields in great detail. We present optical polarimetric observations of stars in and close to the Southern Coalsack, taken from the Interstellar Polarization Survey …

Social innovation in waste management in residential buildings

Lilian Aligleri, Camila Santos Doubek Lopes, C. V. Rodrigues, Cláudio Pereira de Sampaio

A large number of Brazilian municipalities still need to develop models and arrangements that enhance the disposal and proper destination of materials, especially in homes at large residential buildings that increasingly occupy the metropolises and the urban landscape. Thus, from the theoretical …

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Interstellar Polarization Survey III: Relation Between Optical Polarization and Reddening in the General Interstellar Medium

Y. Angarita, M. J. F. Versteeg, M. Haverkorn, C. V. Rodrigues et autres

Optical starlight can be partially polarized while propagating through the dusty, magnetized interstellar medium. The polarization efficiency describes the polarization intensity fraction per reddening unit, P$_V$/E($B-V$), related to the interstellar dust grains and magnetic field properties. The maximum value observed, [P$_V$/E$(B-V)]_{max}$, is …

Interstellar Polarization Survey II: General Interstellar Medium

M. J. F. Versteeg, A. M. Magalhães, M. Haverkorn, Y. Angarita et autres

Magnetic fields permeate the entire Galaxy and are essential to, for example, the regulation of several stages of the star formation process and cosmic ray transportation. Unraveling its properties, such as intensity and topology, is an observational challenge that requires combining different …

Effluent and sludge generated in a Fenton process applied in the post-treatment of mature landfill leachate

C. V. Rodrigues

Lixiviados oriundos de aterros sanitários, com fração orgânica em estágio metanogênico de degradação, possuem elevada concentração de matéria orgânica recalcitrante, que pode ser removida por Processos Oxidativos Avançados (POAs). O processo Fenton, quando comparado a outros processos de tratamento, pode apresentar menor …

Performance of Fenton process for the removal of recalcitrant organics from landfill leachate after nitrification / Desempenho do processo Fenton para remoção de orgânicos recalcitrantes de lixiviado do aterro sanitário após a nitrificação

C. V. Rodrigues, Rodrigo Rossetto Pescim, Deize Dias Lopes

The Fenton's process was evaluated for mature leachate treatment, after the biological one, by means of an experimental design divided into three steps: analyzes of the factors separately to establish values ranges; evaluation of significant factors and their interactions by a fractional …

AVALIAÇÃO DO LODO RESULTANTE DA APLICAÇÃO DO REAGENTE DE FENTON EM LIXIVIADO METANOGÊNICO PRÉ-TRATADO BIOLOGICAMENTE

Camila Souza Azevedo, Fabrício Singaretti de Oliveira, C. V. Rodrigues

Este trabalho teve como objetivo avaliar a eficiencia na remocao de materia orgânica atraves da aplicacao do reagente de Fenton em lixiviado pre-tratado biologicamente, bem como estudar o lodo gerado. O reagente de Fenton e baseado na combinacao de peroxido de hidrogenio …

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Evaluation of the use of a degritter with baffles developed for the removal of solid particles in effluent from the washing of equipment at the construction site

C. V. Rodrigues, Dayane Mauro Sangiorgio, Gabriel Otaviano Almondes, Vanessa Aparecida de Santis e [UNIFESP] Silva

The industrial effluents produced in construction sites are responsibility of the own company and should be treated properly. However, many times this effluents do not receive the suitable treatment nor the adequate disposal, which may contaminate the environment. In order to mitigate …

Kinetic characterization of rat tissue kallikrein using N alpha-substituted arginine 4-nitroanilides and N alpha-benzoyl-L-arginine ethyl ester as substrates.

M. O. Sousa, C. V. Rodrigues, H. B. Pena, M.G Alvarenga et autres

Hydrolysis of seven N alpha-substituted L-arginine 4-nitroanilides: benzoyl-arginine p-nitroanilide (Bz-Arg-Nan), tosyl-arginine p-nitroanilide (Tos-Arg-Nan), acetyl-leucyl-arginine p-nitroanilide (Ac-Leu-Arg-Nan), acetyl-phenylalanyl-arginine p-nitroanilide (Ac-Phe-Arg-Nan), benzoyl-phenylalanyl-arginine p-nitroanilide (Bz-Phe-Arg-Nan), tosyl-phenylalanyl-arginine p-nitroanilide (Tos-Phe-Arg-Nan), and D-valyl-leucyl-arginine p-nitroanilide (D-Val-Leu-Arg-Nan), and the N alpha-substituted L-arginine ester: benzoyl-arginine ethyl ester (Bz-Arg-OEt), by rat tissue …

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