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Bibliographic Details
Main Author:	Z. Alejandra Mora
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2005
Subjects:	Biología biofiltro respirometría lodos activados bacterias sulfooxidantes microorganismos adaptados
Online Access:	https://www.redalyc.org/articulo.oa?id=77670205
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Desarrollo de un inóculo microbiano empleando lodos activados para la remoción de ácido sulfhídrico (H2S) mediante biofiltración Z. Alejandra Mora Carlos H. Chávez Gladys Fonseca Jorge A. Cabra Yezid Carmona Salgado Biología biofiltro respirometría lodos activados bacterias sulfooxidantes microorganismos adaptados Se utilizaron lodos activados de diferentes orígenes para el desarrollo de un inóculo apto para la degradación deácido sulfhídrico en un sistema piloto de biofiltración con dos unidades de diferentes materiales de soporte:bagazo de caña en un caso y una mezcla de este y piedra pómez en el otro. Mediante la adición a los lodosactivados, de medio nutritivo con un sustrato específico, se favoreció el proceso de adaptación y selección de lasespecies microbianas que degradan el ácido sulfhídrico (H2S).Durante la operación de la planta piloto se realizóel seguimiento de la variación poblacional de los diferentes grupos tróficos presentes en los soportes,observándose una tendencia al crecimiento de las bacterias sulfooxidantes (BSO) y la disminución deheterótrofos, mohos y levaduras. Para la estandarización del proceso de preparación del inóculo se seleccionó ellodo activado que presentó mayor velocidad de degradación del sustrato, proceso en el cual se evaluarondiferentes medios nutritivos. La medición de algunas variables de control permitió escoger el pH como lavariable que determinaba el punto óptimo de adaptación de un inóculo para este sustrato. La inoculación y lascaracterísticas de los soportes para el establecimiento y desarrollo de las especiesmicrobianas condujeron a quelos biofiltros presentaran eficiencias de remoción mayores de 99% desde su arranque. 2005 artículo científico 0123-3475 https://www.redalyc.org/articulo.oa?id=77670205 es http://www.redalyc.org/revista.oa?id=776 Revista Colombiana de Biotecnología application/pdf Universidad Nacional de Colombia Revista Colombiana de Biotecnología (Colombia) Num.2 Vol.VII

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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