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首页> 外文期刊>Journal of Ecological Engineering >Heavy Metals Capture from Water Sludge by Kenaf Fibre Activated Carbon in Batch Adsorption
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Heavy Metals Capture from Water Sludge by Kenaf Fibre Activated Carbon in Batch Adsorption

机译：重金属通过Kenaf纤维活性炭从水污泥中捕获分批吸附

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The Malaysia's wastewater treatment plant has yet to find an environmentally alternative for the sludge treatment before disposal. In majority of cases, the sludge containing a high amount of heavy metals including Fe, Ti, Mn, Zn, As, Cu, Ni, Zr, and Ga, is disposed to the environment through landfill. The recovery of valuable materials such as manganese from the sludge is an alternative path towards zero dumpings of schedule waste as well as a way of reducing the possible pollutant release to the environment. It can be achieved through adsorption, as it provides a cheap yet flexible, method which is simple and easy to implement. Kenaf derived from Hibiscus cannabis was proven as a good adsorbent material for the heavy metals recovery. This project aims at utilizing Kenaf fiber as activated carbon to recover heavy metals from wastewater sludge in batch adsorption. The optimum adsorbent preparation conditions were obtained from the research performed by Chowdhury [1]. The adsorbent surface area and pore characteristics and elemental analysis were observed under adsorbent characterization. The effect of contact time, sludge pH and temperature to the removal efficiency was investigated. The adsorption isotherm was also studied. The result showed that the developed kenaf activated carbon is a promising adsorbent which might be used for some heavy metals. From batch adsorption study, it was observed that KFAC is able to remove an average 30% of the heavy metal element from the sludge. It was also found that the best removal is achieved in a neutral pH solution, increasing the contact time will increase the equilibrium uptake, while the increasing temperature will increase the percent removal of heavy metals. It was concluded that the Kenaf based activated carbon can be used for the recovery of heavy metals from the wastewater sludge through batch adsorption.
机译：马来西亚的废水处理厂尚未发现处置前污泥处理的环保替代品。在大多数情况下，含有大量重金属的污泥，包括Fe，Ti，Mn，Zn，如Cu，Ni，Zr和Ga，通过垃圾填埋场设置到环境中。来自污泥的锰如锰如锰的回收是零点倾倒时间表废物的替代路径，以及减少对环境可能的污染物释放的方式。它可以通过吸附来实现，因为它提供了一种简单且易于实现的便宜且柔韧的方法。从芙蓉大麻衍生的Kenaf被证明是一种良好的重质金属回收物的吸附材料。该项目旨在利用Kenaf纤维作为活性炭，以在批量吸附中从废水污泥中恢复重金属。最佳吸附剂制备条件是从Chowdhury进行的研究中获得的。在吸附表征下观察到吸附表面积和孔隙特性和元素分析。研究了接触时间，污泥pH和温度与去除效率的影响。还研究了吸附等温线。结果表明，发育的KENAF活性炭是一个有希望的吸附剂，其可用于一些重金属。通过批量吸附研究，观察到KFAC能够从污泥中除去平均30％的重金属元件。还发现，在中性pH溶液中实现了最佳的去除，增加接触时间将增加平衡摄取，而温度的增加将增加重金属的百分比。得出结论是，基于keNaf的活性炭可用于通过批量吸附来回收来自废水污泥的重金属。

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