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, Central South University, Changsha 410083, China) Abstract: Considering that a large amounts of biomass harvested containing heavy metals will be produced by phytoremediation for metal contaminated..., Al2O3 and FeCl3. Key words: phytoremediation; biomass harvested of giant reed; pyrolysis; heavy metal 近年来,重金属污染土壤植物修复技术的工程应用越来越受到广泛关注.随着植物修复技术大规模的工程应用,如何科学处理处置修复过程中产生的含重金属生物质收获物已成为该技术的瓶颈问题之一.利用焚烧法......
, biohydrometallurgy research on rare metals such as uranium,molybdenum, tellurium, germanium, indium, and secondary rare metal resources, as well as heavy nonferrous metals such as copper, nickel, cobalt, and gold...Research progress in biohydrometallurgy of rare metals and heavy nonferrous metals with an emphasis on ChinaJian-Kang Wen,Bo-Wei Chen,He Shang,Guo-Cheng ZhangNational Engineering Laboratory......
重金属污染物的阻滞率可达99%,阻滞效果显著.关键词:压实膨润土;工程屏障;重金属离子;阻滞效果Retention of heavy metal ion on engineering barriers of compacted bentoniteCHEN Yong-gui1, 2, HE Yong1, 2, ZHOU Xing-zhi3(1. School of Civil Engineering... (Ⅲ) was also researched. The results show that the migration of Cr (Ⅲ) is obvious in the research region, and the heavy metal contaminant spreads around in the situation without engineering barriers. When......
of the relative deviations between the simulation value and the field survey result are within ±10%. Key words: sediment; heavy metal pollution; re-release rate; numerical simulation 1 Introduction... pollutants, the sediments will cause secondary pollution to the overlying water in the form of a new source [11]. Therefore, researches focusing on the release of heavy metal pollutants in sediments......
中图分类号:X703.1 文献标志码:A Adsorption of heavy metal ions from aqueous solutions by MgCl2 modified orange peel GUO Xue-yi, LIANG Sha, XIAO Cai-mei, TIAN Qing-hua (School.... The effects of pH, temperature, solid/liquid ratio, adsorption time and metal ion concentration on the removal behavior of individual heavy metals such as Cu2+, Cd2+, Pb2+, Zn2+ and Ni2+ from aqueous solution......
Trans. Nonferrous Met. Soc. China 27(2017) 666-675 Effect of sulfate erosion on strength and leaching characteristic of stabilized heavy metal contaminated red clay Hai-qing ZHANG, Yu-you YANG, Yu.../stabilization (S/S) technology has been widely used for remediation of the heavy metal contaminated soils. The heavy metal ions will be leached from the stabilized contaminated soil under sulfate erosion......
,Cd2+浓度为5 mg/L时的削减率高达96.53%.黑藻对水体中V5+的削减率不高,均都低于20%. 图1 狐尾藻对水样中重金属的削减效果 Fig. 1 Reduction effectiveness of heavy metal in water environment by Myriophyllum verticillatum 综合分析得出:狐尾藻和黑藻对水体中Pb2...65.1%,下降幅度最大. 图2 黑藻对水样中重金属的削减效果 Fig. 2 Reduction effectiveness of heavy metal in water environment by Hydrilla verticillata 表5~8所列分别为黑藻在不同浓度V5+,Pb2+,Cd2+和Cr6+胁迫下的叶绿素a含量.结果表明,随着V5+,Pb2......
with ecological risk, hence some measures should be taken to repair the soil in the areas with serious pollution. Key words: soil; heavy metal pollution; evaluation; potential ecological risk 土壤重金属污染具有隐蔽性,长期.... Heavy metal concentrations and their decreasing trends in sewage sludges of China[J]. Acta Scientiae Circumstantiate, 2003, 23(5): 561-569. [8] 李永进, 李培军. 重金属污染土壤毒性的大型蚤法诊断[J]. 农业环境科学学报, 2003, 22(2......
程较好地拟合.凹凸棒石与重金属的长期作用反应机制可能是由于凹凸棒石纳米效应和反应活性,表面缓慢水化导致含重金属离子溶液pH值缓慢升高,诱导了Ni2+在凹凸棒石表面沉淀,在凹凸棒石表面形成了氢氧化物或层状双氢氧化物. 关键词:凹凸棒石; 重金属离子; 吸附; 长期作用; palygorskite; heavy metal ion; absorption; long-term reaction......
Metal Dusting-Mechanisms and Preventions () 摘要:Metal dusting attacks iron, low and high alloy steels and nickel-or cobalt-base alloys by disintegrating bulk metals and alloys into metal particles... mechanism is still not well understood. Current methods of protection against metal dusting are either directed to the process conditions-temperature and gas composition-or to the development of a dense......