Residual effects of tobacco biochar along with different fixing agents on stabilization of trace ele

来源 :环境科学学报(英文版) | 被引量 : 0次 | 上传用户:q372245556
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The residual effect of tobacco biochar (TB ≥ 500℃) mono and co-application with Cahydroxide (CH),Ca-bentonite (CB) and natural zeolite (NZ) on the bio-avaflability of trace elements TE(s) in alkaline sofls has not been deeply studied yet.A pot study that had earlier been investigated TB mono and blended with CH,CB and NZ on the immobilization of Pb,Cu Cd,and Zn by Chinese cabbage.Maize crop in the rotation was selected as test plant to assess the residual impact of amendments on stabilization of Pb,Cu Cd,and Zn in mine polluted (M-P),smelter heavily and low polluted (S-HP and S-LP,respectively) soils.The obtained results showed that stabilization of Pb,Cd,Cu and Zn reached 63.84% with TB + CB,61.19% with TB + CH,83.31% with TB + CH and 35.27% with TB + CH for M-P soil,36.46% with TB + NZ,38.46% with TB + NZ,19.40% with TB + CH and 62.43% with TB + CH for S-LP sofl,52.94% TB + NZ,57.65% with TB + NZ,52.94% with TB + NZ,and 28.44% with TB + CH for S-LP soil.Conversely,TB + CH and TB alone had mobilized Pb and Zn up to 19.29% and 34.96% in M-P soil.The mobility of Zn reached 8.38% with TB + CB and 66.03% with TB for S-HP and S-LP soils.The uptake and accumulation of Pb,Cd,Cu and Zn in shoot and root were reduced in three polluted soils.Overall,the combination of TB along with CH,CB and NZ has been proven to be effective in Pb,Cd,Cu and Zn polluted mine/smelter soils restoration.
其他文献
面对日益紧迫的能源安全及环境恶化问题,世界各主要国家都相继开发可再生能源,而风力发电技术则成为当前点电工技术研究的热点。我国的风电装机容量连续五年翻番,居全球首位。虽
采用真空开关的人工过零直流开断技术由于其在较高电压等级直流开断方面潜在的优势和应用价值受到了国内外研究者的关注。其开断过程主要涉及主断路器(真空断路器)和换流开关(真
深度学习在面部特征点识别领域已取得了较为显著的成果,然而在处理遮挡、光照、角度不当等复杂条件下的面部图像时,预测数目较多的面部特征点仍是一个具有挑战性的问题.为解
A graphite carbon nitride (g-C3N4) modified Bi4O5I2 composite was successfully prepared in-situ via the thermal treatment of a g-C3N4/BiOI precursor at 400℃ fo
该论文根据牵引负荷的特性研制了牵引变电所自动化系统馈线测控保护装置.该文首先介绍牵引网的负荷特点,提出牵引变电所自动化的功能配置方案,并仔细分析了牵引变电所馈线保
该文针对西北电网恢复控制中的黑启动阶段和网架恢复阶段进行了分析和研究.在研究中考虑一种最严重的事故情况,即假定事故引起西北电网全部崩溃,所有发电厂都停止运行.其目的
环境污染和能源危机问题已经成为当今社会最具挑战的问题之一,太阳能以其资源丰富、洁净无污染的优势备受人们的关注,其应用越来越广泛,特别是太阳能光伏发电并网系统的研究发展迅速。本课题通过理论分析以及建模仿真,系统的研究了光伏并网系统的最大功率跟踪以及控制方法。完成工作如下:首先从光伏系统组成、主电路拓扑结构、滤波电路模型和并网系统控制方式等方面进行了总体研究。搭建了基于LCL滤波器滤波的三相并网逆变器
该文研究了电网的短期负荷预测,分析评价了现有的各种短期负荷预测方法.针对应用前向神经网络进行电力系统短期负荷预测所存在的主要问题进行了研究和改进.结合历史负荷、气
Water-uptakes of pure sodium carbonate (Na2CO3),pine β-alanine and intally mixed β-alanine/Na2CO3 aerosol particles with different mole ratios are first monit