作者
Warda Hassan, Umar Farooq, Muhammad Ahmad, Makshoof Athar, Misbahul Ain Khan
发表日期
2017/5/1
期刊
Arabian Journal of Chemistry
卷号
10
页码范围
S1512-S1522
出版商
Elsevier
简介
Conventional technologies for the removal of dyes from the waste water are proving expensive due to non-regenerable materials used and their high costs. The use of dried biomass from Haloxylon recurvum plant stems (HRS) was studied for the removal of methylene blue, a textile dye, from its aqueous solution. FTIR studies revealed a variety of functional groups on the plant surface including carboxyl and amino groups. The pH at the point of zero charge (pHpzc) was found to be 6.3. The dye uptake by the plant increased with increasing pH, time of contact and dye concentration. Lagergren Pseudo first order and the Ho’s pseudo second order models were used to study the kinetics. The Langmuir and Freundlich equilibrium models were studied and the qmax was 22.93 mg/g. The changes in the values of free energy (ΔGo) and enthalpy (ΔHo) indicated the spontaneous, feasible and exothermic nature of the …
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