Mengqi Jiang

The black-odor mechanism of Yitong River was analyzed based on survey and monitoring results. We found that organic matter is the main pollution source of Yitong River and its tributaries. A black-odor evaluation model that can describe the pollution of the Yitong River water system was developed, and this model has the parameters I = 0.21 [COD_Cr] + 0.18 [DO] - 0.36[NH₃-N] + 0.91. The model performance was satisfactory with a black-odor defining accuracy of 69%. Moreover, w

Abstract BACKGROUND Algae–bacteria symbiotic system has attracted much attention in the fields of nutrients removal from wastewater. Fungi has also been demonstrated to promote the cultivation of microalgae. However, capability and mechanism of algae–fungi symbiotic system for nutrient removal remains unclear. RESULTS This study assessed the removal efficiencies of an algae–fungi symbiotic system of Chlorella variabilis NC64A and Ganoderma lucidum for chemical oxygen demand (COD cr ), total nitr

In this study, algal growth potential tests were performed in water samples collected from six sampling sites in Meiliang Bay, Lake Taihu. The potential release of soluble reactive phosphorus (SRP) by enzymatic hydrolysis of enzymatically hydrolyzable phosphorus (EHP) was simultaneously evaluated. Results show that all studied regions were in highly eutrophic states, with additional nitrogen (N) or phosphorus (P) inputs, inducing negligible further increase in algal growth. EHP in water could be

Data of cellular nutrients and macromolecules for Chlorella vulgaris samples collected on day 8.

Additional file 1 (PDF 2271 KB)

dataset 1.csv: Figure 1a and b <br> dataset 2.csv: Figure 1c and d, and Figures 2 ~ 6 <br> SEM.csv: data for SEM analysis in R <br> SEM.R: R script for SEM analysis <br> loessspline.csv: data for nonparametric analysis <br> nonpara.R: R script for nonparametric analysis

Abstract Identifying nitrogen dynamics in coastal ecosystems remains a key challenge for environmental monitoring and management. In this study, nitrogen distribution patterns were examined in Matsushima Bay, a semi-enclosed coastal system, and its adjacent areas. The results revealed the utility of the natural abundance of 15 N in all dissolved nitrogen (δ 15 N-TDN) as a qualitative indicator of coastal nutrient sources and status. Quantitative analyses showed substantial nitrogen loading from

The isotopic composition (δ¹⁵N and δ¹⁸O) of nitrite (NO₂^-) provides valuable insights into nitrogen cycling in aquatic environments. However, its typically low concentrations as a transient redox intermediate in natural waters often limit isotopic analysis. In this study, a method for δ¹⁵N and δ¹⁸O analysis of low-level NO₂^- in freshwater has been developed by coupling anion-exchange resin preconcentration wi