Biological stability of municipal solid waste from simulated landfills under tropical environment

Shalini, S.; Karthikeyan, Obulisamy Parthiba; Joseph, Kurian

doi:10.1016/j.biortech.2009.08.104

Cited by 25 publications

(14 citation statements)

References 23 publications

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“…The volatile fraction was higher in fresh MSW (44 %) and mined MSW (21 %) than slurry (17 %). The characteristics of fresh MSW and mined MSW were similar to the results obtained in the study by Sri Shalini et al (2010). Organic load was higher in fresh MSW (10 g/kg) with higher biodegradable fraction than mined MSW.…”

Section: Seed Characteristicssupporting

confidence: 77%

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Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Shalini

Kurian

Wong

2014

Int. J. Environ. Sci. Technol.

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Leachate from the municipal solid waste (MSW) landfills contains high concentration of ammoniacal nitrogen that is a major toxic pollutant that has a great threat to environment. Among the processes available for the removal of ammoniacal nitrogen, one process is a combination of partial nitrification and anaerobic ammonium oxidation (anammox) process. It requires aerobic ammonium-oxidising bacteria (AOB) and anaerobic ammonium-oxidising bacteria (AnAOB). This paper presents the feasibility of enriching the AOB and AnAOB in 100-mL and 2.5-L batch reactors from fresh and mined MSW and leachate under aerobic and anaerobic conditions with varying feed-to-seed ratio. The AOB and AnAOB activity was monitored by measuring the intermediates such as hydroxylamine and hydrazine along with variations in ammoniacal nitrogen, nitrite nitrogen, and nitrate nitrogen concentrations in the reactor contents. The formation of intermediates such as hydroxylamine and hydrazine and ammoniacal nitrogen transformation data confirmed the enrichment of AOB and AnAOB. Further, AOB and AnAOB were validated by most probable number test and scanning electron microscopy analysis, respectively. DNA extraction, polymerase chain reaction amplification, and sequencing analysis authenticated the AnAOB as Candidatus Brocadia anammoxidans.

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Section: Seed Characteristicssupporting

confidence: 77%

“…with the values reported in the literature having higher moisture content for fresh MSW and lower moisture content for mined waste (Karthikeyan et al 2007 andSri Shalini et al 2010). The volatile fraction was higher in fresh MSW (44 %) and mined MSW (21 %) than slurry (17 %).…”

Section: Seed Characteristicssupporting

confidence: 69%

Aerobic and anaerobic ammonium-oxidising bacterial enrichment from municipal solid waste

Shalini

Kurian

Wong

2014

Int. J. Environ. Sci. Technol.

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“…Como complemento imprescindible a estas directrices, diversos grupos de investigación trabajan intentando definir los criterios de estabilidad para rellenos y biorrellenos, con indicadores que permitan afirmar que el lugar ha sido descontaminado y puede ser abandonado, puesto que ya no supone un riesgo para el medio ambiente y la salud humana (Abichou et al 2013, Barlaz et al 2002, Decottingnies et al 2005, Francois et al 2006, Sri-Shalini et al 2010, Trois y Griffth 2008.…”

Section: Perspectivasunclassified

Biorrellenos: Perspectivas Tras Dos Décadas De Experiencias en El Mundo

Cortázar

Hernández-Berriel

Mañón-Salas

2016

Rev. Int. Contam. Ambie.

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Palabras clave: relleno sostenible, pasivo ambiental, recirculación de lixiviados, biogás, biodegradación RESUMENLas palabras biorrelleno, vertedero biorreactor, vertedero sostenible, resuenan con frecuencia en las reuniones técnicas y científicas de "basurólogos" desde hace tiempo. Sin embargo todavía existen muchos mitos en torno a esta técnica que, en algunos lugares, fundamentalmente de Estados Unidos, se lleva practicando durante más de veinte años. Este trabajo presenta una síntesis del estado actual del conocimiento sobre biorrellenos. Inicia revisando la historia de esta técnica, planteada por primera vez en los años 70 y aclarando sus objetivos, que son la degradación acelerada de los residuos municipales (RM), para evitar que sean o se conviertan en pasivos ambientales, así como sus ventajas e inconvenientes. Identificado el parámetro fundamental a controlar, la humedad de los RM, han surgido, según las condiciones de aireación, biorellenos anaeróbicos, semiaeróbicos, aeróbicos e híbridos. Como guía para los nuevos proyectos que se plantean y requieren en Iberoamérica, en este trabajo se reúnen las directrices generales de diseño y operación recomendables para nuevas instalaciones de biorrellenos anaeróbicos y semiaeróbicos, incluyendo los sistemas de recirculación de lixiviados y extracción del gas generado, los cambios principales respecto a la operación de un relleno tradicional y las necesidades de seguimiento. Como ejemplos se describen: una experiencia a escala real que ha servido como referencia innovadora a nivel mundial, un modelo de biorrelleno semiaeróbico aplicable a países de desarrollo intermedio y dos casos representativos del avance en este campo en Iberoamérica. Finalmente se presentan las perspectivas de avance de la técnica mediante investigación y en cuanto a su extensión en Iberoamérica.Key words: sustainable landfill, environmental liability, leachate recirculation, biogas, biodegradation ABSTRACT Concepts like 'bioreactor landfill' or 'sustainable landfill' have been resonating in specialized technical and scientific meetings for a long time. However, there are still many myths surrounding this technique which, in some places, mainly the United States, has been practiced for over twenty years. This paper summarizes the current state of knowledge on bioreactor landfills. It begins with a review of the history of this technique, proposed in the 70s for the first time. The objective of bioreactor practices is to accelerate the degradation Rev. Int. Contam. Ambie. 32 (Especial Residuos Sólidos) 91-111, 2016

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“…Urban solid waste management studies were carried out in Kanpur and Kolkata (Hina et al, 2008;Arun et al, 2010). SWM studies were carried out in Chennai using landfill lysimeters (Sri et al, 2009). SWM studies were carried out at Kolkata (Tumpa et al, 2009) and gave solutions to waste management problems.…”

Section: Issn: 2319-7706 Volume 6 Number 4 (2017) Pp 523-529mentioning

confidence: 99%