alexa Abstract | The removal of Cr(VI) with Dimocarpus longan as a low cost biosorbent

Journal of Chemical and Pharmaceutical Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Original Articles Open Access


Dimocarpus longan has been proposed to be a low cost biosorbent. The adsorption ability of its seed and skin to remove the Cr (VI) in aqueous solution has been investigated in a batch method. Longan`s seed showed better ability compared to longan`s skin at any experimental condition. Adsorption capacity showed the optimum values at pH 3, initial concentration 300 mg/L, biosorbent dose 0.25 g and contact time 15 min. Langmuir and Freundlich models have the value of R2 = 0.5408 and 0.8976. Results showed that Freundlich model was better than Langmuir, proposed a multilayer biosorption ofCr (VI). FTIR showed strecthing vibration of hydroxil groups, sp3 alkanes, carbonyl groups, alkanes, and bending of primary amines. Both of the biosorbent also showed the stretching vibration of symmetric nitro compounds which supported by other peaks in the fingerprint area. SEM observation showed the surface of Dimocarpus longan has pores, granules and fibers. Typical morphological damages found after biosorption. Based on Isotherm models, FTIR and SEM images, we suggested a physico-chemical pathway could describe the metal sorption mechanism.

To read the full article Peer-reviewed Article PDF image

Author(s): Florenly Refi Ikhtiari Hermansyah Aziz Syafrizayanti and Rahmiana Zein


Removal of Cr (VI), Dimocarpus longan, Isotherm adsorption, FTIR, SEM., Dimocarpus longan

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version