Phosphorus adsorption characteristics of red soil in hilly region of South China

2011 International Symposium on Water Resource and Environmental Protection Pub Date : 2011-05-20 DOI:10.1109/ISWREP.2011.5893623

Liwei Yang, Tinglin Huang, Haiyan Wang, Fengtao Wan, Yuexi Zhou

{"title":"Phosphorus adsorption characteristics of red soil in hilly region of South China","authors":"Liwei Yang, Tinglin Huang, Haiyan Wang, Fengtao Wan, Yuexi Zhou","doi":"10.1109/ISWREP.2011.5893623","DOIUrl":null,"url":null,"abstract":"Red soil in southern hill region is an adsorbent with the characteristics of economy, accessibility and so on. The phosphorus adsorption characteristics of red soil were studied in this paper. Differences in parameters of phosphorus absorption at different concentrations with different weights of red soil were compared, and the influence of temperature and pH on the phosphorus adsorption was discussed. The results indicate that the isothermal adsorption data fit better with the Langmuir models than the Freundlich models. The saturated adsorption capacity of phosphorus can reach 0.454 mg/g when the temperature is 30°C, indicating that the red soil is a good adsorbent material for removing phosphorus, and can be well used as a medium in constructed wetland. The phosphorus adsorption quantity of red soil increases rapidly with time in the initial period and then approaches to a constant level in the later period. In the high concentration of initial phosphorus, the temperature on phosphorus adsorption of red soil is becoming apparent with the concentration increased. The tests show that the influence of pH at 6 to 9 on phosphorus adsorption is not significant. Hence, the influence of pH on phosphorus adsorption of red soil can be ignored in constructed wetland.","PeriodicalId":6425,"journal":{"name":"2011 International Symposium on Water Resource and Environmental Protection","volume":"15 1","pages":"1888-1890"},"PeriodicalIF":0.0000,"publicationDate":"2011-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Symposium on Water Resource and Environmental Protection","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISWREP.2011.5893623","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Red soil in southern hill region is an adsorbent with the characteristics of economy, accessibility and so on. The phosphorus adsorption characteristics of red soil were studied in this paper. Differences in parameters of phosphorus absorption at different concentrations with different weights of red soil were compared, and the influence of temperature and pH on the phosphorus adsorption was discussed. The results indicate that the isothermal adsorption data fit better with the Langmuir models than the Freundlich models. The saturated adsorption capacity of phosphorus can reach 0.454 mg/g when the temperature is 30°C, indicating that the red soil is a good adsorbent material for removing phosphorus, and can be well used as a medium in constructed wetland. The phosphorus adsorption quantity of red soil increases rapidly with time in the initial period and then approaches to a constant level in the later period. In the high concentration of initial phosphorus, the temperature on phosphorus adsorption of red soil is becoming apparent with the concentration increased. The tests show that the influence of pH at 6 to 9 on phosphorus adsorption is not significant. Hence, the influence of pH on phosphorus adsorption of red soil can be ignored in constructed wetland.

查看原文本刊更多论文

华南丘陵区红壤对磷的吸附特性

南方丘陵地区红壤是一种具有经济性、可达性等特点的吸附剂。研究了红壤对磷的吸附特性。比较了不同浓度、不同重量红壤对磷吸附参数的差异，探讨了温度和pH对磷吸附的影响。结果表明，等温吸附数据更符合Langmuir模型而不是Freundlich模型。当温度为30℃时，红壤对磷的饱和吸附量可达0.454 mg/g，表明红壤是一种较好的除磷吸附剂材料，可以很好地作为人工湿地的介质。红壤对磷的吸附量在初期随时间迅速增加，后期趋于恒定。在初始磷浓度较高的情况下，随着浓度的增加，红壤对磷吸附的温度影响越来越明显。试验表明，pH值在6 ~ 9时对磷的吸附影响不显著。因此，在人工湿地中可以忽略pH对红壤吸附磷的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2011 International Symposium on Water Resource and Environmental Protection

自引率

0.00%

发文量