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Syful Islam
Syful Islam

Teaching Assistant
Texas Tech University

Syful received his BS degree in Petroleum Engineering from TTU. He then joined Dr. Yan’s group in the CECE department at TTU to study degradation of chlorinated ethenes using Zero Valent Iron (ZVI) materials. He optimized the ZVI technology through chemical or biological method to enhance the degradation rate of chlorinated ethenes. Syful is an active member of the Association of Bangladeshi Students and Scholars at TTU and he also served the association as a president for one academic year. He loves to spend his leisure time playing football (soccer) or listening to good music.


PRESENTATION TITLE

An Abiotic and Biotic System for Trichloroethylene (TCE) Degradation

Sulfidation of nano or micro size Zero valent iron (ZVI) can remove wide range of pollutants from contaminated groundwater. Modification of the surface of the ZVI particles with sulfur precursors improve its reactivity and selectivity toward target contaminants, such as trichloroethylene (TCE), tetrachloroethylene (PCE), and cis-1,2-dichloroethylene (cis-DCE). Presence of biological sulfur species in subsurface might play a beneficial role in TCE reduction through interaction with ZVI and this pathway has not been examined thoroughly. Here in, pure culture of Desulfovibrio desulfuricans (Dd) was used to sulfidate ZVI particles for TCE degradation. Results indicated that TCE degradation rate was enhanced significantly by co-presence of Dd culture and ZVI compare to ZVI alone, and no formation of cis-DCE or vinyl chloride (VC) was observed in the degradation products, suggesting there is a synergy between Dd and ZVI for TCE dechlorination. Therefore, Dd-ZVI system could be a tenable way to remediate TCE-contaminated sites.


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