NDLI: Performance of Agroindustrial Wastes for Removal of Disinfection By-products From Water

Content Provider	Springer Nature Link
Author	Cunha, Graziele C. Santos, Mônica C. Araújo, Bru R. Jesus, Jany Hellen F. Santos, Luana O. Santos, Jandyson M. Wisniewski, Alberto Romão, Luciane P. C.
Copyright Year	2015
Abstract	The aim of the present work was to use agroindustrial wastes as alternative adsorbents for the removal of trihalomethanes (THMs). SEM micrographs of sugar cane bagasse and coconut mesocarp samples showed a high degree of particle agglomeration, with particle sizes of 114.4 ± 74.0 μm, while the sugar cane bagasse particles were larger (557.3 ± 169.5 μm). The pyrogram obtained for sugar cane bagasse revealed the presence of many compounds with different functional groups containing oxygen atoms. In the case of the coconut mesocarp, the range of oxygenated functional groups was smaller. The adsorption processes showed fast kinetics, with equilibrium reached after around 240 min of contact. Adsorption tests revealed different selectivities of the biomass adsorption sites for the THMs. Adsorption percentages obtained with coconut mesocarp ranged from 49.2 ± 2.57 to 71.9 ± 1.88 %, while the values obtained for sugar cane bagasse were between 31.8 ± 1.08 and 67.4 ± 1.27 %. The orders of removal (significant at p < 0.05) were as follows: CHCl$_{3}$>CHBrCl$_{2}$>CHBr$_{2}$Cl>CHBr$_{3}$ (using sugar cane bagasse) and CHBr$_{2}$Cl>CHBrCl$_{2}$>CHCl$_{3}$>CHBr$_{3}$ (using coconut mesocarp). Use of the sugar cane bagasse resulted in high removal percentages of chloroform (51.1 %) and dichlorobromoform (42.3 %) in the first 5 min of contact, showing that this biomass had greater affinity for trihalomethane compounds with more chlorine atoms in their structures. This finding has considerable environmental importance, given that these are the two commonest compounds found in water distribution networks.
Starting Page	1
Ending Page	14
Page Count	14
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	226
Issue Number	12
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-11-20
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Trihalomethanes Adsorption Agroindustrial wastes Sugar cane Coconut mesocarp Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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