Effects of Natural Organic Matter on TCE Removal in Groundwater by Zero-Valent Iron: Batch Study

Abstract:

An investigation on the effects of humic acid (representing NOM) on TCE (a typical organic contaminant) removal by Fe⁰ in batch settings was carried out. Inhibitory effects of humic acid on Fe⁰ towards TCE removal were observed. At early stage of the experiments, humic acid might partition with TCE, and the adsorption or deposition of humic acid onto Fe⁰ surface would further facilitated TCE immobilization. Once the reduction reactive sites on Fe⁰ surfaces were covered by accumulated humic acid and the partition of TCE to humic acid became saturated, TCE removal in Fe⁰ was observed retarded.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 486-489
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.486
• Online since: September 2013
• Authors: Tong Zhou Liu*, Pin Hua Rao
• Keywords: Aggregation, Humic Acid (HA), Hydrophobic Partition, TCE, Zero-Valent Iron

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