Removal of contaminants from river Jakara using iron oxide nano particles prepared from Citrullus lanatus fruit waste

IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL
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Abstract

Achieving sustainable development requires efficient waste water treatment. Green synthesized iron nanoparticles have attracted much attention as potential catalysts for water remediation in view of their lost cost, high reactivity and good adsorption capacity. This study investigated the applicability of iron oxide nanoparticles synthesized from Citrullus lanatus fruit waste (IONP) in the remediation of contaminated water samples that were collected from River Jakara in Kano State Nigeria. The prepared nanoparticle was characterized using Brunauer–Emmett–Teller (BET) surface area, Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Thermogravimetric Analysis (TGA). The BET results revealed that IONP have large surface area and are nanometer sized particles. SEM analysis indicated that the adsorbent contain microsphere which might have facilitated the efficient purification of the river water while TGA study revealed that the adsorbent exhibited a three step decomposition process. Data obtained from XRD indicated that the synthesized adsorbent is of high purity and crystalline in nature with an average particle size of 17 nm. Results obtained after treatment of the river water with the adsorbent gave enhanced values of Total Dissolved Solids, Turbidity, Chemical Oxygen Demand, Dissolved Oxygen, phosphate and pH; thus confirming the high adsorption ability of the prepared nanoparticles. The percentage removal of Ni(II) Pb (II) and Cd (II) ions in the river water by IONP was found to depend on adsorbent concentration, agitation time and pH. The adsorption process of these metal ions onto the adsorbent was best described by the Langmuir isotherm model and followed pseudo second order kinetics. The regeneration stability of the adsorbent was adequate when treated with the heavy metals ions at optimum conditions. The nanoparticle synthesized from Citrullus lanatus waste was found to be an efficient and environmentally friendly alternative for treatment of contaminated water.

Abstract Image

利用瓜果废料制备的氧化铁纳米颗粒去除 Jakara 河中的污染物
实现可持续发展需要高效的废水处理。绿色合成的纳米铁粒子具有成本低、反应活性高和吸附能力强等特点,作为潜在的水修复催化剂备受关注。本研究调查了从尼日利亚卡诺州 Jakara 河收集的水样中提取的柠檬果废弃物(IONP)合成的氧化铁纳米粒子在修复受污染水样中的适用性。制备的纳米粒子采用布鲁诺-艾美特-泰勒(BET)表面积、扫描电子显微镜(SEM)、X 射线衍射(XRD)、傅立叶变换红外(FTIR)光谱和热重分析(TGA)进行表征。BET 分析结果表明,IONP 具有较大的表面积,颗粒大小为纳米级。扫描电子显微镜分析表明,吸附剂含有微球,这可能有助于有效净化河水。XRD 数据表明,合成的吸附剂纯度高,呈结晶状,平均粒径为 17 纳米。用该吸附剂处理河水后得到的结果显示,总溶解固体、浊度、化学需氧量、溶解氧、磷酸盐和 pH 值均有所提高,从而证实了所制备的纳米颗粒具有很强的吸附能力。IONP 对河水中镍(II)、铅(II)和镉(II)离子的去除率取决于吸附剂浓度、搅拌时间和 pH 值。这些金属离子在吸附剂上的吸附过程用 Langmuir 等温线模型进行了最佳描述,并遵循假二阶动力学。在最佳条件下处理重金属离子时,吸附剂具有足够的再生稳定性。研究发现,用柠檬废料合成的纳米粒子是处理受污染水的一种高效、环保的替代方法。
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来源期刊
Journal of hazardous materials advances
Journal of hazardous materials advances Environmental Engineering
CiteScore
4.80
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