Variations in Cadmium Sorption from Aqueous Solution Using Activated and EDTA Dosed Cotton Linters

来源 :2011全国非常规水源利用技术研讨会 | 被引量 : 0次 | 上传用户:chenweili73924
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This study investigated the viability of modified cotton linters as ádsorbent for the removal of cadmium from aqueous solution in a batch process.The effect of Bleaching,activation and EDTA dosing of the biomass was studied.Experimental parameters such as contact time,pH,initial concentrations,adsorbent dose and temperature were investigated.The results of the investigations showed that at an optimum pH of 5,EDTA dosed cotton linter had removal capacity of 3.985mg/g vhereas bleached and activated linters had 2.074mg/g and 2.88mg/g respectively.Sorption equilibrium was reached within 120 min of interaction with the metal.The sorption mechanism followed Lagergren pseudo-second order kinetics.It is suggested that intra-particle diffusion is not the only rate limiting factor.The sorption capacity at equilibrium increased from 2.88mg/g to 4.54mg/g at an adsorbent dose of 2g.Temperature in the range of 25 - 45℃ showed restricted effects on removal (3.98mg/g at 25℃ and 1.988mg/g at 45℃).Results indicated that Freundlich model gave better experimental fit when compared with Langmuir equation.
其他文献
ZnO nanosheets are successfully synthesized via microwave-assisted reaction of ZnO precursor in aqueous solution using a CEM microwave system.Their morphologies
A synthetic-fiber barrier for the removal of turbidity in the treatment of stormwater runoff was developed and tested using a laboratory scale test channel.The
Isotope and hydrochemistry characteristics of geothermal water were discussed in Gushi depression,the hosting environment and possible origins of the geothermal
Membrane distillation (MD) desalination is an emerging technology for fresh water production.This process incorporates phase change and transport of vapour thro
Chitosan(CS),(1,4)-2-amino-2-deoxy-β-D-glucan,is the product of partial deacetylation from natural chitin.Recently,much attention has been paid to chitosan bec
Desalination is considered one of the most suitable areas for the utilization of solar energy,as there are many places in the world where abundant supply of sol
The feasibility study of nuclear seawater desalination demonstration plant has been finished recently by Institute of nuclear and new energy technology,Tsinghua
A new method of wastewater treatment of pollutants in beer brewery is given.With adsorption of the IAC-2 adsorptive technology (chitosan and expedient microbes
In this paper,in order to evaluate the influence of the water FBE 103 on the water of higher-altitude Litopenaeusvan-nameiculture ponds,research was conducted b
High gradient magnetic separation (HGMS) was applied fortreatment of the wastewater from fermented molasses and there generation of magnetic seeds was studied.T