文章基本信息

标题：SIMULTANEOUS SORPTIVE REMOVAL OF TYPICAL FARMLAND DIFFUSE POLLUTANTS ON AMMONIUM DIHYDROGEN PHOSPHATE MODIFIED PIG MANURE BIOCHAR IN BINARY-SOLUTE AQUEOUS SOLUTION
本地全文：下载
作者：Jun Liu ; Fangli Wang
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2020
卷号：29
期号：7A
页码：6219-6227
语种：English
出版社：PSP Publishing
摘要：Biochar application has been identified as the effective method to prevent the agricultural diffuse pollution, which takes more serious risks to water-body under combined pollution. The cadmium and glyphosate were respectively selected as the typical diffuse heavy metal and herbicide pollutants as (he dominant proportion in applications. The ammonium dihydrogen phosphate-modified pig manure biochar (PAB) was employed in the sorption experiments to investigate the removal of cadmium and glyphosate in both single- and binary-solute systems. The sorption ability was assessed depending on sorption time, biochar addition load and initial concentration. Results showed that pseudo sorption equilibrium weie achieved within 12 and 6 h in APB for cadmium and glyphosate. respectively. The recommended biochar load was 0.1 g in 20 mL of solution. The equilibrium sorption quantity of cadmium and glyphosate respectively increased from 87.40 to 7353 mg/kg and 34.05 to 1018 mg/kg with the initial concentrations climbing in the single system. Compared to the single-solute system, the equilibrium sorption quantity of cadmium and glyphosate in the binary-solute system increased respectively by 4.771%-13.03% and 3.296%-11.26% at different equilibrium concentration condition. The sorption parameters n of cadmium and glyphosate reduced by 17.07% and 5.878%, respectively. The apparent adsorption maximums reached 11925 and 2562 mg/kg, respectively. Results indicates that pig manure biochar addition is an effective way to remove diffuse pollutant from agricultural wastewaters or to reduce the loss of heavy metal and/or organic contaminants into waterbody.
关键词：Biochar;Sorption;Difiuse combined pollution;Pig manure