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To date, very few attempts have been made to systematically compare the effectiveness of agricultural and nonagricultural organic wastes for aided phytostabilization of mine tailings under field conditions. In this study, we performed a field trial to compare the effectiveness of three agricultural organic wastes: chicken manure (CM), crop straw (CS), and spent mushroom compost (SMC), with that of three nonagricultural organic wastes, municipal sludge (MS), medicinal herb residues (MHR), and sweet sorghum vinasse (SSV) for aided phytostabilization of a Pb-Zn mine tailings pond in Hunan Province, China. Eight plant species naturally established in the vicinity of the mine were selected and seeded onto trial plots. It was found that the CM-amended plots had the highest (p < 0.05) vegetation cover (86%) and biomass production (881 g m−2), compared to other treatments. CM was also one of the best amendments in terms of improving soil nutrient status, increasing activities of soil enzymes, and immobilizing soil Pb. In addition, CM-amended plots were characterized by their higher microbial diversity and distinct microbial community structure as compared to the control plots. MS was the second best amendment in promoting vegetation cover (71%) and biomass production (461 g m−2), and it performed as well as CM for improving nutrient status, immobilizing heavy metals, and increasing the activities of enzymes in the mine tailings. Suggestions for further lines of research are made in order to develop future investigations. [ABSTRACT FROM AUTHOR]

Metal organic frameworks (MOFs) emerged as a kind of promising electrode material have attracted considerable attentions in recent years. In this work, two 1,4-naphthalene dicarboxylate based MOFs, namely, Mn2(NDC)2(DMF)2 and Cd2(NDC)2(DMF)2 are synthesised by a solvothermal method and characterised by IR, XRD, TGA, SEM. Their electrochemical performances as anode materials for lithium ion battery are investigated for the first time. The result indicates both compounds showing single crystal feature with a bar shape can exhibit electrochemical reactivity. However, Mn2(NDC)2(DMF)2 has higher specific capacity in compared with Cd2(NDC)2(DMF)2. The reversible specific capacities of Mn2(NDC)2(DMF)2 at current density of 200, 500, 1000 mAg–1 after 300 cycles maintain at 765.4,524.4 and 309.3 mAhg–1, respectively, while the values are 401.8, 296.1 and 266.5 mAhg–1 for Cd2(NDC)2(DMF)2. [ABSTRACT FROM AUTHOR]