Adsorption of Humic Acid from Aqueous Solution on Single-Walled Carbon Nanotubes

Abstract

Contamination of surface water and necessity of accessing new water resources is one of the biggest problems of most developing countries. This has allocated most national and international plans to itself. Most water resources throughout the world especially surface and groundwater have huge amounts of natural organic matters (NOMs). Natural organic matters are a product of degradation of aqueous plants and algae available in surface water resources 1. These matters are a complex and heterogeneous mixture of various organic compounds with different molecular size and properties; they are divided into two main humic and non-humic components. Ratio of humic matters to non-humic matters varies depending on the seasons of the year. The main NOMs are humic substances (HSs) which include humic acid, fulvic acid and humins 2-5. Humic substances are the most important active components of NOMs which can be found in soils, sediments, surface water and groundwater. Presence of HSs can cause a lot of problems in natural waters 6-8. Not only does their presence in water affect smell, colour and taste of water but also it affects several processes in purification of drinking water. During chlorination, HSs cause the formation of carcinogenic compounds like trihalomethanes (THMs). They also increase the formation of biofilm in water purification and

Acid violet 17 Dye Decolorization by Multi-walled Carbon Nanotubes from Aqueous Solution

“…Their study results showed that data followed pseudo-second order reaction. Their study results correspond with present study results [25]. Ai and his assistants studied about removal of methylene blue from aqueous solution with magnetite loaded multi-wall carbon nanotube.…”

Photo-Fenton like Catalyst System: Activated Carbon/CoFe2O4 Nanocomposite for Reactive Dye Removal from Textile Wastewater

“…In addition to ferromagnetic properties, the room temperature specific magnetization (M) versus applied magnetic field (H) curve measurement of the AC/CFO indicates that the values of coercive force [38], saturation magnetization and remnant magnetization are 433.02 Oe, 22.03 emu/g and 7.16 emu/g, respectively; a similar result was reported earlier by Xu et al [39].…”

Performance of granular ferric hydroxide process for removal of humic acid substances from aqueous solution based on experimental design and response surface methodology

“…The solution was then poured into a beaker and agitated for three hours. The solution obtained after three hours of agitation was purified humic acid with concentration 1 g/L, which was stored at 4 °C [1,2,[6], [7], [8], [9], [10]].…”