DECOLORIZATION OF BASIC RHODAMINE-B FROM DYE WASTEWATERS BY SPENT MUSHROOM SUBSTRATE
Basic Rhodamine-B(Rh-B)is often used for dyeing paper.However,by using common adsorbents such as active carbon,the removal of this dye is very low and also influenced by the pH of wastewater itself.Low-cost and eco-friendly adsorbents(spent mushroom substrate,SMS)have been regarded as an ideal alternative to remove dyes from wastewater,as compared with current expensive methods.The adsorption capacities of SMS and mushroom substrate prior to use(MSP)were compared.The effects of pH,Rh-B quality,stirring speed and adsorption isotherm have been studied at 25 and 35 ℃.The Langmuir,Freundlich and Temkin models were used in this study.It was found that acidic pH is detrimental to basic Rh-B dye adsorption.At the initial adsorbent dose of 0.1 g,the adsorption capacities of SMS and MSP were 12.09 and 3.93 mg/g respectively.For SMS,the Langmuir equation fit better than the other models.However,due to different surface structure,Freundlich equation is suitable to MSP.When absorbent loading was fitted at 10g/L,Rh-B with concentrations of 20 mg/L has shown adsorption removals of about 99.6 and 70.2%for SMS and MSP,respectively.From the perspectives of the adsorption isotherm,it could be speculated that the structure of biomass used for muchroom cultivation were significantly changed,which is benefit to the absorption of Rh-B from wastewater.
Jing Liu Runqing Li Xiaolin Luo Liulian Huang Lihui Chen
College of Material Engineering,Fujian Agriculture and Forestry University(FAFU),Fuzhou 350002,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）