Abstract
The powder of Ocimum Basilicum leaves was treated by zinc chloride (ZnCl2) and applied as a new and low-cost sorbent for extraction of permanganate anions (MnO4−) from liquid phase. The functional groups of the ring stretching vibration, –NH2 deformation, stretching of C-O, stretching of CH, and stretching of –NH were found in the sorbent of zinc chloride Ocimum basilicum leaves powder (ZCOBLP) at 1516.21, 1629.33, 1047.00, 2929.88, and 3294.93 cm−1, respectively. This adsorbent has 8.3 pHZPC, 117.27 m2·g−1 surface area, 0.00711 cc·g−1 pore volume and average pore diameter of 264.144 Å. The outcomes of sorption experiments designate the positive impact for temperature, time of agitation, and started concentration of MnO4− and negative impact for pH. The optimal conditions were 1300 mg·L−1 as started adsorbate concentration, 55°C as solution temperature, agitation time of 420 min, and pH of 1.5. The outcomes of the equilibrium and dynamic approve that this sorption is spontaneous and heat-absorbing process, and the obtained data were described well by isotherm model of Langmuir and 2nd-order dynamic model. The capacities of this sorption were 588.235, 625.000, 666.667, and 714.286 mg·g−1 at 25, 35, 45, and 55 (°C), respectively. The superior sorption capacities of the uncostly ZCOBLP will make it successfully used for MnO4− ions extraction from liquid phases.
Highlights
Potassium permanganate (KMnO4) is broadly used for a large number of applications; it is largely applied as a very strong oxidizing agent in laboratories and chemical industries
In 100 mL glass bottles, each of these solutions was combined with 0.1 g of zinc chloride Ocimum basilicum leaves powder (ZCOBLP). ese bottles were shaken for 20 h at room temperature (25°C) and 140 rpm in shaker incubator. e differences between the start and final pH values were calculated and plotted against pHi to estimate the pHZPC value of the sorbent utilized in this study
Properties of ZCOBLP. e outcomes got from experiments of pHZPC and sorbent surface analyzer are registered in Table 1. e obtained results approve that ZCOBLP has suitable surface area, pore volume, and pore diameter which have significant impacts on the sorption act of each sorbent
Summary
Potassium permanganate (KMnO4) is broadly used for a large number of applications; it is largely applied as a very strong oxidizing agent in laboratories and chemical industries. E List of World Health Organizations of Essential Medicines considered potassium permanganate as one of the harmless and most active medicines in the health system [2]. It is widely used in water treatment to remove chemical elements and compounds that cause unwanted color and odor like iron and hydrogen sulfide gas [3,4,5]; its primary function was to oxidize colors, cyanide, and phenols [6,7,8,9,10], and currently it is used to stop the growth of some organisms in the water [11]. Sorption is one of the most widely utilized techniques due to its simplicity, high sorption capacity, environmental friendliness, nontoxicity, and availability of a large range of sorbents [11]
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