Physical Chemical Treatment Of Stabilized Leachate Using Limestone, Activated Carbon And Zeolite
| dc.contributor.author | Ahmed El-Arabi Mohammed Abu Foul | |
| dc.date.accessioned | 2022-11-08T01:37:23Z | |
| dc.date.available | 2022-11-08T01:37:23Z | |
| dc.date.issued | 2007-04 | |
| dc.description.abstract | Leachate generated from Larut Matang landfill in Taiping was characterized. Colour, COD, iron and ammoniacal nitrogen were found to be high. The potential use of activated carbon, limestone and zeolite and their possible mixtures as an adsorbent was investigated in this research. Influence of shaking speed and contact time was studied. The adsorption isotherms and the kinetics constants were determined. The batch experiments demonstrated that both combine mixtures of activated carbon with zeolite at 15:25 (by volume) and activated carbon with limestone and zeolite at 15:10:15 (by volume) gave the best results with removal efficiencies more than 90% for colour and ironi 85% for COD, 80% for ammoniacal nitrogen at shaking speed of 350 rpm and contact time of 4 hours. Both Langmuir and Freundlich isotherms fitted well to the experimental data with correlation coefficient more than 93%. The mixtures yielded adsorption capacity of 522.19, 232.56, 52.63, 21.01 (mg/g) and SOO, 200, 50, 20.20 (mg/g) for colour, COD, iron and ammoniacal nitrogen, respectively. The kinetic results showed that the data fitted well with the pseudo second order equation with correlation approaching unity for all parameters in all experiments implying that the rate limiting step may be chemisorption. The regeneration experiments showed that 0.2 M HN03 can be used to regenerate activate carbon and 0.2 M HCI and NaCI mixture and regenerate zeolite, with regeneration more than 80% in most cases. Results of the continuous flow experiments for both mixtures indicated that removal can reach up to 50-90% of colour. 70-90% of COD. 85-90% of iron and 50-90% of ammoniacal nitrogen in the first 10 days of the experiments. The results indicated that the arrangement of layers of adsorption media inside the column is not significant. The results also showed that it was possible to treat about 800 m3 of leachate at flow rate of 15.92 Umin for 35 days. before the ratio C/Co exceeded 0.1. by using four filters connected in series each with an area of 6.25 m2• and a height of 3 m. It can be concluded from the research that the activated carbon-limestone-zeolite and activated carbon-zeolite mixtures media exhibited better results for all parameters as compared with the use of individual media. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/16557 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | Engineering | en_US |
| dc.title | Physical Chemical Treatment Of Stabilized Leachate Using Limestone, Activated Carbon And Zeolite | en_US |
| dc.type | Thesis | en_US |
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