Novel biochar-impregnated calcium alginate beads with improved water holding and nutrient retention properties | |
Bing Wang; Bin Gao; Andrew R. Zimmerman; Yulin Zheng; Honghong Lyu | |
2018 | |
Source Publication | Journal of Environmental Management
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Volume | 209Pages:105-111 |
Abstract | Drought conditions and nutrients loss have serious impacts on soil quality as well as crop yields in agroecosystems. New techniques are needed to carry out effective soil water and nutrient conservation and fertilizer application tools. Here, calcium alginate (CA) beads impregnated with ball-milled biochar (BMB) were investigated as a new type of water/nutrients retention agent. Both CA and Ca-alginate/ball milled biochar composite (CA-BMB) beads showed high kinetic swelling ratios in KNO3 solution and low kinetic swelling ratios in water, indicating that CA-BMB beads have the potential to retain mineral nitrogen and nutrients by ion exchange. Pseudo-second-order kinetic model well-described the swelling kinetics of both beads in KNO3 solution. Over a range of temperatures, the characteristics of dehydration suggested that impregnation with BMB improved the water holding capacity and postponed the dehydration time of Ca-alginate. The cumulative swelling and release characteristics of water, K+, and NO3- indicated that CA-BMB beads have great potential as a soil amendment to improve its nutrient retention and water holding capacity. |
Keyword | Biocharball Milling calcium Alginate Beads controlled Release water Holding Capacity soil Amendment |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/8670 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 2.Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA 3.Department of Geological Sciences, University of Florida, Gainesville, FL, 32611, USA 4.Puding Karst Ecosystem Research Station, State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Puding, 562100, China |
Recommended Citation GB/T 7714 | Bing Wang;Bin Gao;Andrew R. Zimmerman;Yulin Zheng;Honghong Lyu. Novel biochar-impregnated calcium alginate beads with improved water holding and nutrient retention properties[J]. Journal of Environmental Management,2018,209:105-111. |
APA | Bing Wang;Bin Gao;Andrew R. Zimmerman;Yulin Zheng;Honghong Lyu.(2018).Novel biochar-impregnated calcium alginate beads with improved water holding and nutrient retention properties.Journal of Environmental Management,209,105-111. |
MLA | Bing Wang;Bin Gao;Andrew R. Zimmerman;Yulin Zheng;Honghong Lyu."Novel biochar-impregnated calcium alginate beads with improved water holding and nutrient retention properties".Journal of Environmental Management 209(2018):105-111. |
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Novel biochar-impreg(1322KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download |
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