| dc.contributor.author | Kuria, M. Serah | |
| dc.contributor.author | Mwangi, Isaac W. | |
| dc.contributor.author | Njoroge, Peter W. | |
| dc.date.accessioned | 2025-10-21T13:55:42Z | |
| dc.date.available | 2025-10-21T13:55:42Z | |
| dc.date.issued | 2024 | |
| dc.identifier.issn | 2278-5736 | |
| dc.identifier.uri | http://repository.mut.ac.ke:8080/xmlui/handle/123456789/6680 | |
| dc.description.abstract | Phenolic compounds in water are contaminants of concern even at low concentrations. They get incorporated in water from various sources such as industrial, mining and natural sources. Natural sources of phenolic compounds are plant saplings and aquatic plants such as green and red marine algae. This makes these compounds readily available from both natural and industrial sources to pollute the water. Phenolic compounds take long to diminish and are carcinogenic. Phenolic compounds in water affects its taste and oduor of the vital products. They equally affect the taste and odour of marine organisms in that water as well as the animals that consume it. To minimize the negative effects from these pollutants, their elimination is the only option. This paper gives an account on the preparation and modification of rice husks with triethylamine and how it is used on the elimination of phenolic compounds from water by adsorption. Modification was carried out by chlorinating and anchoring with an amino group on the rice husks to form a quaternary ammonium compound. The existence of the functional groups that performed as the binding sites was confirmed by Fourier Transform Infrared (FT-IR) analysis. The anchoring of the amino group was confirmed by the occurrence of a signal at 3424.67cm-1. The carbon skeleton of the modified product resembled that of cellulose by solid-state 13C NMR. Change of resonance frequencies in the modified material confirmed the chlorination and subsequent the anchoring of ethylene diamine within the cellulose structure. Scanning electron microscopy analysis displayed an increase in the porosity of the modified material as related to the parent material. The material was then applied for sorption experiments and it was confirmed that the optimum pH was of 5.5 for all the phenolic compounds under study. There was over 90% phenolic compounds uptake in the first 2 min of contact time. The adsorption followed the Langmuir monolayer adsorption model with correlation coefficient (R2) of 0.9895 for Naphthol. The elimination of Naphthol with modified rice husks gave the best adsorption capacity of 0.6125 mg/g. Thus modified rice husks is an effective adsorbent material for eradication of phenolic substances originating from unsafe drinking water | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | IOSR Journal of Applied Chemistry (IOSR-JAC) | en_US |
| dc.subject | Adsorption, Adsorption Isotherms, Adsorbents, sorbate | en_US |
| dc.title | Removal Of Phenolic Compounds From Aqueous Media Using Triethylamine Anchored Rice Husks | en_US |
| dc.type | Article | en_US |
