GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS
At sewage treatment plants, sludge management remains a bottleneck, requiring efficient and cost-effective solutions for treating this solid byproduct. It is known that the presence of plants can accelerate the sludge drying process, as a result, vertically flowed constructed wetlands (VFCWs) have b...
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Sociedade Brasileira de Química
2024-11-01
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| Series: | Química Nova |
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| author | Diogo A. P. da Silva Mateus P. Matos José Antônio Ribeiro de Araújo Thiago de A. Neves |
| author_facet | Diogo A. P. da Silva Mateus P. Matos José Antônio Ribeiro de Araújo Thiago de A. Neves |
| author_sort | Diogo A. P. da Silva |
| collection | DOAJ |
| description | At sewage treatment plants, sludge management remains a bottleneck, requiring efficient and cost-effective solutions for treating this solid byproduct. It is known that the presence of plants can accelerate the sludge drying process, as a result, vertically flowed constructed wetlands (VFCWs) have been evaluated as alternatives to traditional drying beds. Though, for better applicability of this technology, this study premised on evaluating greenhouse gas (GHG) emissions in VFCWs constructed for anaerobic sludge treatment. To compare GHG emissions across different seasonal conditions, three configurations were tested: four units planted with Tifton-85 grass (Cynodon spp.), four units planted with elephant grass (Cenchrus purpureus), four control units without vegetation presence, with four sludge loading rates in each configuration: 75, 100, 150, and 200 kg TS (total solids) m-2 year-1. Higher sludge loading rates led to increased methane emissions, with emissions escalating during the rainy season. Methane emissions decreased towards the end of the resting period. The presence of vegetation reduced methane emissions mainly during the resting period due to increased aeration of the units. The conditions that would provide lower GHG emissions would be with loads of up to 100 kg m-2 year-1, in units planted with Tifton grass. |
| format | Article |
| id | doaj-art-c1c7bd612cae434b815f55e99ea0a57e |
| institution | OA Journals |
| issn | 1678-7064 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj-art-c1c7bd612cae434b815f55e99ea0a57e2025-08-20T02:14:11ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642024-11-01471010.21577/0100-4042.20240068GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSISDiogo A. P. da SilvaMateus P. MatosJosé Antônio Ribeiro de AraújoThiago de A. Neveshttps://orcid.org/0000-0003-2536-2174At sewage treatment plants, sludge management remains a bottleneck, requiring efficient and cost-effective solutions for treating this solid byproduct. It is known that the presence of plants can accelerate the sludge drying process, as a result, vertically flowed constructed wetlands (VFCWs) have been evaluated as alternatives to traditional drying beds. Though, for better applicability of this technology, this study premised on evaluating greenhouse gas (GHG) emissions in VFCWs constructed for anaerobic sludge treatment. To compare GHG emissions across different seasonal conditions, three configurations were tested: four units planted with Tifton-85 grass (Cynodon spp.), four units planted with elephant grass (Cenchrus purpureus), four control units without vegetation presence, with four sludge loading rates in each configuration: 75, 100, 150, and 200 kg TS (total solids) m-2 year-1. Higher sludge loading rates led to increased methane emissions, with emissions escalating during the rainy season. Methane emissions decreased towards the end of the resting period. The presence of vegetation reduced methane emissions mainly during the resting period due to increased aeration of the units. The conditions that would provide lower GHG emissions would be with loads of up to 100 kg m-2 year-1, in units planted with Tifton grass.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422024001000205&lng=en&tlng=engreenhouse gasesanaerobic sludgevertical wetlands |
| spellingShingle | Diogo A. P. da Silva Mateus P. Matos José Antônio Ribeiro de Araújo Thiago de A. Neves GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS Química Nova greenhouse gases anaerobic sludge vertical wetlands |
| title | GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS |
| title_full | GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS |
| title_fullStr | GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS |
| title_full_unstemmed | GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS |
| title_short | GREENHOUSE GAS EMISSIONS FROM CONSTRUCTED WETLANDS FOR ANAEROBIC SLUDGE TREATMENT: EFFECT OF SEASONALITY, PLANT SPECIES TYPE, AND SLUDGE LOADING - A PRELIMINARY ANALYSIS |
| title_sort | greenhouse gas emissions from constructed wetlands for anaerobic sludge treatment effect of seasonality plant species type and sludge loading a preliminary analysis |
| topic | greenhouse gases anaerobic sludge vertical wetlands |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422024001000205&lng=en&tlng=en |
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