Enhancing the quality and reputation of Soil & Environmental Health journal: 2025 updates

Soil & Environmental Health, Journal Year: 2025, Volume and Issue: unknown, P. 100128 - 100128

Published: Jan. 1, 2025

Language: Английский

Constructed wetland for septic tank sludge management: drained water quality under different operating strategies on a bench-scale experiment

Engenharia Sanitaria e Ambiental, Journal Year: 2024, Volume and Issue: 29

Published: Jan. 1, 2024

Abstract The septic tank is commonly used for treating domestic effluents, especially decentralized treatment. However, it requires periodic maintenance, including the removal, treatment, and disposal of sludge, which can be difficult costly. An alternative approach, aligned with principles circular economy, use wetlands sludge management units (WSMU). In this study, a bench-scale experiment was conducted using six WSMU (0.0177 m2 each) planted Canna x generalis. Different total solids (TS) loads (15, 28, 42 kg TS m-2 year-1) saturation levels (0.10 m 0.20 m) were tested, super-loading strategy adopted at beginning operation. Monitoring analyses carried out over first 150 days results demonstrated that already operation, high removal efficiencies obtained, in level, reaching 80% TS, 93% chemical oxygen demand, 98% Kjeldahl nitrogen, 97% orthophosphate. This work showed are capable level treatment even Furthermore, these indicate larger tested to optimize performance reduce area demand. Thus, configuration, as well operational strategies paper, future, long-term, full-scale research better understand active mechanisms.

Language: Английский

Rhizosphere microbial community structure and PICRUSt2 predicted metagenomes function in heavy metal contaminated sites: A case study of the Blesbokspruit wetland

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 959, P. 178147 - 178147

Published: Dec. 29, 2024

This study investigated the microbial diversity inhabiting roots (rhizosphere) of macrophytes thriving along Blesbokspruit wetland, South Africa's least conserved Ramsar site. The wetland suffers from decades pollution mining wastewater, agriculture, and sewage. current focused on three macrophytes: Phragmites australis (common reed), Typha capensis (bulrush), Eichhornia crassipes (water hyacinth). results revealed a greater abundance microbes (Bacteria Fungi) associated with free-floating E. compared to P. T. capensis. Furthermore, correlation between metals, showed strong fungal communities metals such as nickel (Ni) arsenic (As), while bacterial correlated more lead (Pb) chromium (Cr). functional analysis predicted by PICRUSt2 identified genes related xenobiotic degradation, suggesting potential these break down pollutants. Moreover, specific groups - Proteobacteria, Verrucomicrobia, Cyanobacteria, Bacteroidetes were linked this degradation pathway. These findings suggest promising avenue for microbe-assisted phytoremediation, technique that utilizes plants their decontaminate polluted environments.

Language: Английский