| Effects of biochar derived from corn cob and sludge on physical and chemical properties and heavy metal availability of saline-sodic soil |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2019.01.04 |
| Key Words: biochar corn cob sludge saline-sodic soil physical and chemical properties heavy metals availability |
| Author Name | Affiliation | | HAO Min | Beijing Zhong Qi Environment & Energy Technology CO.Ltd, Beijing 100102, China | | LI Yan-wei | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China | | HAN Jian-hong | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China | | ZHANG Lian-ke | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China | | YU Wei-jia | Baotou Radiation Environment Management, Baotou, Inner Mongolia 014010, China | | JIAO Li-yan | Huize water (qingzhou) CO.LTD, Qingzhou, Shandong 262500, China |
|
| Hits: 1350 |
| Download times: 547 |
| Abstract: |
| In order to understand the effect of biochar derived from corn cob and sludge in the saline-sodic soil improvement, we conducted a experiment to determine the effect of the biochar prepped under different temperatures on physical and chemical properties of saline soil and the availability of heavy metals. The biochar was prepared from corn cob and sludge treated at 300~500℃ before application to soil. The microstructure was analyzed using scanning electron microscope. The results showed that biochar had more developed microstructure and greater specific surface area than corn cob and sludge. With increasing amount of biochar applied, the content of organic carbon in the saline soil was significantly improved by 3.66~10.13 times and the water soluble salt was decreased by 5.06 g·kg-1. However, the total N and P and available P and K were slightly changed. With increasing the amount of biochar, CEC in the saline soil was significantly improved by 3~9.25 times and soluble salts decreased significantly while soil pH was slightly lowered. Therefore, it is concluded that biochar application in the saline-sodic soil can effectively reduce the availability of heavy metals and the effectiveness increased with increasing the application rate. |
|
|
|