Abstract Prior to entering the water body, microplastics (MPs) are mostly collected at sewage treatment plant and biological unit is facility's central processing unit. This review aims present a comprehensive analysis of detrimental impacts MPs on it covers how harm effluent quality processes. The structure microbial communities altered by presence additive release, which reduces functional activity. Extracellular polymers, oxidative stress, enzyme activity explored as micro views harmful...

21 water samples were collected from the lower reaches in Haihe River Basin and pollutant content was detected May, 2009. The quality of 11 rivers this area assessed with methods Single Factor Assessment Method, Comprehensive Pollution Index Fuzzy Evaluation Method Water Quality Identification Method. results showed that is suitable for assessment Basin; Single-factor main pollutants total nitrogen, ammonia COD, BOD5, permanganate index, fluoride; pollution belonged to organic abundant...

Response of nitrogen removal efficiency and microbial interactions to organic pollution has been a major issue in wastewater treatment system. However, the among community under antibiotics press is still unclear. Thus, effect sulfamethoxazole (SMX) on responses IVCWs was investigated through recorded before after adding SMX random matrix theory (RMT)-based network analysis. Results showed that better NH4+-N (> 90%) long period operation were achieved IVCWs, but NO3--N accumulated. nitrate...

The Yellow River Delta has undergone significant changes, developing a temperate chalk-sand silty coast with expansive and level tidal flats. However, the area is currently facing threat of erosion due to coastal construction, decreased river sediment discharge into sea, intensified marine hydrodynamic forces. Remote sensing technology important applications in spatial temporal monitoring This study employs data establish threshold range for extraction flats Qingshuigou sub-delta, using...

Hurricanes are an important disturbance in the tropics that can alter forest ecosystem properties and processes. To understand immediate influence of hurricane on carbon cycling, we examined soil labile organic (LOC) a Canopy Trimming Experiment (CTE) located Luquillo Experimental Forest Puerto Rico. We trimmed tree canopy deposited debris (CTDD) ground treatment plots December 2014, collected floor mass samples 0–10 cm three weeks before treatment, as well at scheduled intervals for 120...

Core-shell structured Cu / 2 O nanowires were demonstrated as efficient catalysts for C – S cross-coupling reactions. The excellent coupling activity over on a diverse set of aryl iodides and thiols is attributed to the synergetic effect special core-shell structures their advanced spatial configuration.

Aluminum sulphate (AS) as a common coagulant has been widely used in water treatment. Pre-hydrolysed AS (PAS) higher molecular weight, presenting stronger treatment performance; however, its poor stability greatly limited application. Therefore, there is still need to obtain stable PAS. In this study, method for stabilizing PAS product was proposed and new coagulant, phosphate-aluminum (PPAS), prepared. The parameters affecting PPAS performance, such n(P)/n(Al) n(OH)/n(Al) molar ratios,...

Fire is an important disturbance that influences species composition, community structure, and ecosystem function in forests. Disturbances such as hurricanes landslides are critical determinants of structure to Caribbean forests, but few studies have addressed the effect paleofire on forests Puerto Rico, USA. Soil charcoal widely used reconstruct fire history. However, occurrence frequency can be underestimated due decay. We reconstructed history subtropical dry Rico based analysis soil...

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Seagrass ecosystems capture and store a large amount of carbon every year. However, co-mpared with other ecosystems, research on deep sediment pools in China 's seagrass ecosystem is still relatively scarce. In this study, total 24 samples were collected, 264 subsediment samples. The distribution organic content sediments at 0~60 cm Caofei-dian bed analysed. ranged from 0.080% to 1.004%, the average was 0.456%, median value 0.170% 0.740%. collection followed principle typicality...

<title>Abstract</title> Phenol is a widely utilized raw material in industrial processes, posing significant threat to human health and aquatic ecosystems. A highly efficient persulfate (PS) catalyst was prepared for the removal of bio-refractory phenol from water. Nano-zero-valent iron (nZVI) has high reduction potential can effectively activate PS, but its susceptibility agglomeration, oxidation low electron transfer efficiency limit application. In this study, nZVI incorporated into...

There are no doubts that plastics problem in the ocean environment has become an increasingly worldwide focus past several decades. A number of experts regard plastic wastes as one hardest anthropogenic threats. The degraded items large individual lead to millions microplstics (MPs) ultimately. As a result, new pollution appeared ocean. ever-growing MPs have been detected subtotal sea products, such food and table salts. can bring potential health risk people by enrichment products....

There was a large amount of dredged materials produced stably in the Yangtze waterway each year. How to dispose these major technical problem field port and engineering. The were valuable resource, utilization landscape can be an important direction future. To analyze feasibility dredging for landscaping, sediments from middle lower reaches River basin, such as Dongting Lake, Chenglingji section, Zhenjiang Nantong section Taihu Lake collected, nutrient characteristics, heavy metal content...

Abstract In order to research the characteristics of phytoplankton community structure in Changli Gold Coast National Nature Reserve, China, 14 survey stations were set up this area May 2019. The basic composition, cell abundance and diversity analyzed, Multi-Dimensional Scaling (MDS) was used divide community. results showed that a total 30 species identified area, mainly diatoms, main ecological types temperate inshore wide temperature salt species. average 54.38×10 4 cells/m 3 , dominant...

利用超高效液相色谱-串联质谱联用技术（UPLC-MS/MS）检测了2019年3月份和7月份新疆赛里木湖近岸表层水中12种抗生素的浓度水平，分析了赛里木湖表层水中典型抗生素的时空分布特征及生态风险.结果表明，氧氟沙星和磺胺甲恶唑为赛里木湖中主要抗生素污染物，春季最高检出浓度分别为2.7×10⁴和1.8×10³ ng/L，其次为红霉素（71.7 ng/L）和土霉素（15.9 ng/L），其余抗生素浓度均小于10.0 ng/L.与其他湖泊或河流地表水相比，赛里木湖抗生素浓度除磺胺甲恶唑和氧氟沙星外，基本处于中等或低水平.由于人类活动和水力流动等因素，抗生素浓度存在时空分布差异，夏季抗生素浓度比春季低2~4个数量级；位于养殖区内的S1点位抗生素总浓度明显高于其他点位.风险评估结果表明，春季红霉素、氧氟沙星和磺胺甲恶唑对赛里木湖生态环境持高风险（RQ>1）.;Occurrence characteristic of antibiotics in the surface water Lake Sayram Xinjiang were...