Chemosphere, Journal Year: 2024, Volume and Issue: 367, P. 143696 - 143696
Published: Nov. 1, 2024
Language: Английский
Published: Jan. 1, 2024
Constructed wetlands (CWs) utilizing elemental sulfur (S0) as an electron donor are effective for nitrate (NO3--N) removal from low C/N wastewater. However, limited bioavailability of chemical S0 (chem-S0) due to water solubility and inadequate mass transfer impedes complete denitrification. In this study, boron mud waste (S0&BM) were processed combined enable the conversion chem-S0 biological (bio-S0) in CWs. The employment S0&BM improved NO3--N total nitrogen (TN) rates by 15.36% 10.55% compared alone. 15N isotope tracing experiment unveiled pathways N2O production demonstrated that facilitated full denitrification, resulting a higher percentage being degraded non-polluting form (54.70%). Releasing trace amounts magnesium mitigated excessive acidification caused autotrophic process promoted biofilm formation, thereby pronouncing vertical oxygen fluctuations. Meanwhile, vacancies generated closed-loop cycle, including oxidation sulfate (SO42-), reduction SO42- sulphide (S2-), final S2- bio-S0. enriched functional microbial communities related transformation. Functional gene analysis showed increased narG, nirS, norB, nosZ genes supporting dsrA sqr responsible cycle exhibited highest abundance. This realization allowed utilization materials treatment, enhancing energy efficiency carbon pollution
Language: Английский
Citations
0
Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 66, P. 106077 - 106077
Published: Aug. 31, 2024
Language: Английский
Citations
0
Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 371, P. 123071 - 123071
Published: Oct. 31, 2024
Mediterranean agroecosystems' vulnerability to hydroclimatic extremes threatens their resilience and sustainability. Nature-based Solutions present a sustainable strategy address global challenges. This meta-analysis of 70 studies developed in climates identified solutions improve soil health water quality agroecosystems by estimating effects on organic matter, carbon, water, erosion, Kjeldahl nitrogen, total nitrate, phosphorus, phosphate, suspended solids, respectively. Using meta-regression, we analysed how the interaction with biophysical conditions (e.g., texture irrigation practices for macrophyte species temperature quality) drives Solutions. The results indicate that these can quality, supporting achievement land Sustainable Development Goals. Among all options considered rehabilitating ecosystems, afforestation led significant increases carbon up 137%. Of tillage tested, eliminating disturbance combined using cover crops mulching revealed potential counteract agricultural degradation, showing reductions erosion as high 98%. individual application inputs showed reverse ongoing degradation trends. Applying olive mill wastewater was associated increase 249\% matter. However, applying manure compost no-tilled plots herbaceous reduced content at field capacity 46\%.Constructed wetlands have shown most improving reducing pollutants contributing protecting restoring aquatic ecosystems. Polycultural systems horizontal subsurface flow nitrogen 9%, nitrates phosphorus 3%, solids 10%. continuous aerated systems, nitrate levels increased 36%. reduction vertical 11%, while surface two 6%. Implementing depended conditions, highlighting need site-specific adaptation based local objectives. In change scenario, mainstreaming management is vital enhancing sustainability agroecosystems, providing ecosystem services beyond including climate mitigation, biodiversity protection human well-being.
Language: Английский
Citations
0
Chemosphere, Journal Year: 2024, Volume and Issue: 367, P. 143696 - 143696
Published: Nov. 1, 2024
Language: Английский
Citations
0