检索结果-南通市图书馆

phosphorus recovery from biogas fermentation liquid by ca-mg loaded biochar

Journal of Environmental Sciences 2015年第3期27卷 106-114页

作者： Ci Fang Tao Zhang Ping Li Rongfeng Jiang Shubiao Wu Haiyu Nie Yingcai Wang Key Laboratory of Plant–Soil Interactions of Ministry of Education College of Resources and Environmental SciencesChina Agricultural University College of Engineering China Agricultural University College of Science China Agricultural University

Shortage in phosphorus （P） resources and P wastewater pollution is considered as a serious problem worldwide. The application of modified biochar for P recovery from wastewater and reuse of recovered P as agricultural fertilizer is a preferred process. This work aims to develop a calcium and magnesium loaded biochar （ca-mg/biochar） application for P recovery from biogas fermentation liquid. The physico-chemical characterization, adsorption efficiency, adsorption selectivity, and postsorption availability of ca-mg/biochar were investigated. The synthesized ca-mg/biochar was rich in organic functional groups and in caO and mgO nanoparticles. With the increase in synthesis temperature, the yield decreased, C content increased, H content decreased, N content remained the same basically, and BET surface area increased. The P adsorption of ca-mg/biochar could be accelerated by nano-caO and nano-mgO particles and reached equilibrium after 360min. The process was endothermic, spontaneous, and showed an increase in the disorder of the solid-liquid interface. Moreover, it could be fitted by the Freundlich model. The maximum P adsorption amounts were 294.22, 315.33, and 326.63 mg/g. The P adsorption selectivity of ca-mg/biochar could not be significantly influenced by the typical pH level of biogas fermentation liquid. The nano-caO and nano-mgO particles of ca-mg/biochar could reduce the negative interaction effects of coexisting ions. The P releasing amounts of postsorption ca-mg/biochar were in the order of ca-mg/B600 〉 ca-mg/B4S0 〉 ca-mg/B300. Results revealed that postsorption ca-mg/biochar can continually release P and is more suitable for an acid environment.

关键词： phosphorus ca-mg loaded biochar biogas fermentation liquid recovery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：