Abstract: Agricultural and forestry wastes have the adsorption capacity of heavy metal ions，which can be used as biological adsorption applied in the industrial wastewater treatment and recovery of valuable heavy metals. This review focused on the recent advancement in the adsorption mechanism，adsorbent innovation and the downstream processing of the metal concentrates. The problems in research and development of agricultural and forestry wastes based adsorbent were also discussed. This review revealed the microscopic process of adsorption，clarified the role of the structure and composition related to the adsorption in the cell wall and determined the mechanism of adsorption of the heavy metal. The article pointed out that the development of new efficient biological adsorbents which perform high selectivity and adsorption capacity is the key step for application. After the adsorption of heavy metals，further processing is necessary for industrialization.

Key words: agricultural and forestry wastes, heavy metal, biological adsorption

摘要： 废弃农林生物质对重金属离子具有吸附能力，可望用于回收工业污水中的重金属。本文对废弃农林生物质对重金属的吸附机理、吸附剂研发、吸附产物资源化利用等方面的研究进展进行了介绍，讨论了废弃农林生物质对重金属吸附技术研究中存在的问题和解决途径。揭示吸附的微观过程、阐明与吸附作用有关的生物质细胞壁结构和成分、确定重金属吸附机理以及开发新的高效的生物质吸附剂等是寻找具有高选择性和高吸附能力的高效生物质吸附剂的关键；对生物质吸附重金属后的进一步处理是工业化的必由途径。

关键词: 农林生物质, 重金属, 生物吸附