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Sheep manure was used to prepare biochar under pyrolysis temperature of 600ºC. The structural features of biochar were characterized by elemental analysis, BET analysis and scanning electron microscopy. The effects of pH, biochar dosage, adsorption time, temperature on adsorption of methyl orange (MO) in water by sheep manure biochar, as well as its adsorption mechanism, were investigated via batch...
The regional distributed energy system is a comprehensive energy utilization system distributed on the user side, which has the characteristics of low carbon, flexibility, complementation, interconnection and so on. It is an important trend of energy system development in China in the future. Firstly, a multi-agent based information physical fusion model for regional distributed energy systems is...
Experimental and theoretical studies have been conducted to investigate the adsorption of atrazine in aqueous solutions by sheep manure-derived biochar synthesized at 650°C (SMB650). The results of characterization analysis showed that SMB650 possessed large specific surface area and was rich in pore structure and functional groups. The removal efficiency of atrazine by SMB650 was 95.3% under the...
Variation laws of growth conditions and root cortical aerenchyma (RCA) of 15 common maize hybrids (Zea mays L.) in Yunnan Province under simulated rare extreme drought and rehydration conditions were tested in this paper. The relationship between functions of root tissues in extreme drought process and resilience after rehydration was discussed. Results demonstrated: 1) in middle drought period, RCA...
We studied the quantity and spatial and dynamic changes of land use and ecosystem service functions in Nanping City from 1995 to 2015 using of Landsat TM / ETM images in 1995, 2000, 2005, 2005, and 2015. The results show that the main land use types in the study area were forest land, cultivated land, and grassland, and the rapid growth rate of forest land was in sharp contrast with the decrease of...
Knowledge about the impact of nitrogen (N) addition on soil respiration (Rs) is critical for understanding soil carbon (C) balance and its responses to climate change. We conducted a long-term field experiment to evaluate the response of Rs to N addition in a larch (Larix principis-rupprechtii) plantation during the growing season in northern China. We applied four N (in the form of NH₄NO₃) levels,...
What is the relationship with environmental factors of phytoplankton community dynamics in saline lakes? We analyzed a data set of phytoplankton community and environmental parameters in seasonal periods (i.e., summer and autumn) in order to describe seasonal variations within the phytoplankton community and its relationship with environmental variables in Chagan Nur Lake on the Ordos Plateau in China...
Metals and polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in airborne particulate matter. In order to better understand the concentrations and origins of metals and PAHs bound to particulate matter in Lanzhou city in northwest China, six metals (Cu, Zn, Ni, Pb, Cd, and Cr) and 16 selected PAHs in 108 part iculate matter samples were quantified by inductively coupled plasma/mass...
Long-term changes (2003-14) of water temperature, DO, pH, TN, NH4-N, TP, and CODMn were examined at eight sampling stations along the Liujiang River. Water quality parameters showed considerable spatial and temporal variability. Annual averages of those parameters were 22.1ºC, 7.8 mg/L, 7.58, 1.35 mg/L, 0.27 mg/L, 0.06 mg/L, and 1.7 mg/L, respectively. An increasing trend for TN/TP and a decreasing...
Heterotrophic nitrifying bacteria are attracting increasing interest due to their advantages in treatment of wastewater with high nitrogen concentration. In this work, four bacterial isolates (WS-1, WS-4, WS-6, and WS-7) with the capability of simultaneous heterotrophic nitrification and aerobic denitrification from soil, sludge, and water by a fast isolation procedure were studied. Isolates WS-1,...
Water samples were collected from the drinking water source of 21 urban areas from the lower Yangtze River at Jiangsu province and various surface drinking water sources of Jiangsu, Zhejiang, and Shandong provinces of China. They were tested for 25 VOCs and 38 SVOCs using purge and trap (P&T) and gas chromatography – mass spectrometry (GC-MS). The results show there were 19 VOCs and 10 SVOCs detected...
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