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Alkali-treated coir fibre-pith composite for waste water treatment
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-05-14 , DOI: 10.1177/15280837211014247
Monnisha Ganesan 1 , Gobi Nallathambi 1
Affiliation  

Coir fibre and pith are eco-friendly material used in the preparation of composites. Coir fibre and coir pith were treated with sodium hydroxide to study the effect of alkali for prolonged exposure on its properties. Fibre and pith were treated with different concentrations of NaOH from 5% to 30% for 24 hours at room temperature. Alkali treatment removes the impurities and the expose the crystalline cellulose and to enhance the surface properties. The alkali-treated coir fibre and pith were characterized by Scanning electron microscopy for morphology, X-ray diffraction for crystallinity index, thermogravimetry for thermal stability, Fourier-transform infrared spectroscopy for structural changes. The chemical composition was analysed for both fibre and pith. Physical properties such as bulk density, particle density and porosity were determined for pith. After alkali treatment, the properties (physical and chemical) of the treated fibre (5% to 20%) has been enhanced. For coir pith the properties has been diminished. Untreated/treated coir fibre/pith filter (CFP) were developed to study the removal of heavy metal ions from the waste water, where untreated (CFP) as a control. The removal efficiency of the developed CFP filter for heavy metal ions were determined by Inductively coupled plasma - optical emission spectrometry (ICP-OES). 5% CFP filter exhibited higher efficiency for removal of heavy metal ions.



中文翻译:

碱处理的椰壳纤维泡沫复合材料用于废水处理

椰壳纤维和髓是用于制备复合材料的环保材料。用氢氧化钠处理椰壳纤维和椰壳髓核,以研究碱长时间暴露对其性能的影响。纤维和髓在室温下用5%至30%的不同浓度的NaOH处理24小时。碱处理可去除杂质,并暴露出结晶纤维素,从而增强表面性能。用扫描电子显微镜观察形态,用X射线衍射观察结晶度指数,用热重分析法测定热稳定性,用傅立叶变换红外光谱法观察碱处理过的椰壳纤维和髓的结构变化。分析了纤维和髓的化学成分。物理性质,例如堆积密度,确定了髓的颗粒密度和孔隙率。碱处理后,已处理纤维(5%至20%)的性能(物理和化学)得到提高。对于椰皮髓,其性能已经降低。开发了未经处理/经处理的椰壳纤维/污垢过滤器(CFP),以研究从废水中去除重金属离子的情况,其中以未经处理(CFP)作为对照。通过电感耦合等离子体发射光谱法(ICP-OES)确定开发的CFP过滤器对重金属离子的去除效率。5%CFP过滤器表现出更高的去除重金属离子的效率。开发了未经处理/经处理的椰壳纤维/污垢过滤器(CFP),以研究从废水中去除重金属离子的情况,其中以未经处理(CFP)作为对照。通过电感耦合等离子体发射光谱法(ICP-OES)确定开发的CFP过滤器对重金属离子的去除效率。5%CFP过滤器表现出更高的去除重金属离子的效率。开发了未经处理/经处理的椰壳纤维/污垢过滤器(CFP),以研究从废水中去除重金属离子的情况,其中以未经处理(CFP)作为对照。通过电感耦合等离子体发射光谱法(ICP-OES)确定开发的CFP过滤器对重金属离子的去除效率。5%CFP过滤器表现出更高的去除重金属离子的效率。

更新日期:2021-05-15
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