Review on utilization of biochar for metal-contaminated soil and sediment remediation.
Review on utilization of biochar for metal-contaminated soil and sediment remediation.
复制标题
DOI：
10.1016/j.jes.2017.08.004
复制
发表时间：
2017-08
影响因子：
6.9
通讯作者：
Mingming Wang;Yi Zhu;Lirong Cheng;Bruce Andserson;Xiaohui Zhao;Dayang Wang;A. Ding
中科院分区：
文献类型：
--
作者：
Mingming Wang;Yi Zhu;Lirong Cheng;Bruce Andserson;Xiaohui Zhao;Dayang Wang;A. Ding
生物炭是一种碳中性甚至碳负的材料，通过在氧气限制的条件下通过植物和动物生物质的热分解产生。最近，人们对生物炭作为吸附剂、土壤改良剂和减缓气候变化的方法在许多类型的应用中的应用越来越感兴趣。利用生物炭修复金属污染土壤已经在小规模和中试试验中进行了深入的研究，取得了有益的效果和多方面的效果。但到目前为止，生物炭在污染底泥治理中的研究和应用非常有限，这也是一个世界性的难题。尽管如此，有理由相信，由于稳定污染物的类似机制，这些沉积物也可以实现相同的多重效益。本文综述了目前生物炭的性质及其在金属污染土壤/沉积物中作为吸附剂/改进剂的应用，以及对植物生长、动物习性和微生物群落的影响。此外，还讨论了使用生物炭作为污染沉积物管理的潜在策略，特别是在环境规划方面。最后，我们强调了生物炭作为一种有效的改良剂应用的可能性，并提出了进一步的研究方向，以确保生物炭作为一种改良剂在污染土壤和沉积物修复中的安全和可持续利用。
Biochar is a carbon-neutral or even carbon-negative material produced through thermal decomposition of plant- and animal-based biomass under oxygen-limited conditions. Recently, there has been an increasing interest in the application of biochar as an adsorbent, soil ameliorant and climate mitigation approach in many types of applications. Metal-contaminated soil remediation using biochar has been intensively investigated in small-scale and pilot-scale trials with obtained beneficial results and multifaceted effects. But so far, the study and application of biochar in contaminated sediment management has been very limited, and this is also a worldwide problem. Nonetheless, there is reason to believe that the same multiple benefits can also be realized with these sediments due to similar mechanisms for stabilizing contaminants. This paper provides a review on current biochar properties and its use as a sorbent/amendment for metal-contaminated soil/sediment remediation and its effect on plant growth, fauna habits as well as microorganism communities. In addition, the use of biochar as a potential strategy for contaminated sediment management is also discussed, especially as regardsin-situplanning. Finally, we highlight the possibility of biochar application as an effective amendment and propose further research directions to ensure the safe and sustainable use of biochar as an amendment for remediation of contaminated soil and sediment.