AI Article Synopsis
- Persistent and mobile (PM) substances are harmful organic micropollutants that can linger and move through water, but current removal methods for these substances from drinking water are limited.
- This study introduced a new adsorbent made from used coffee grounds and aluminum waste, which effectively removed 25 organic micropollutants, including 22 PM substances, with some being completely eliminated from drinking water.
- Various characterization techniques confirmed the adsorbent's effectiveness, and a significant correlation was found between the decrease in UV light absorbance and the removal of these pollutants, suggesting that UV measurements can be a quick way to gauge removal efficiency.
Article Abstract
Persistent and mobile (PM) substances refer to a wide range of organic micropollutants (OMPs) with high persistence and mobility in water. So far, only a few methods have been explored for the removal of PM substances from drinking water. In this work, a new adsorbent based on spent coffee grounds and aluminum waste was synthesized and utilized to remove 25 OMPs, including 22 PM substances, from drinking water. Different characterization methods, including powder X-ray diffraction (XRD), analyses according to Brunauer-Emmett-Teller (BET), field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS), were applied to describe the adsorbent's textural and structural characteristics. The results revealed that the adsorbent is highly effective in removing OMPs. Common OMPs (i.e. carbamazepine, sulfamethoxazole and diclofenac) were completely removed from drinking water. Also, many of the PM substances were removed by more than 80% using an adsorbent dosage of 0.1 g/L. A strong relation between abatement of ultraviolet light absorbance at 254 nm (UV) and OMP removal was observed. Therefore, UV abatement is a useful surrogate for a quick estimation of OMP removals.
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| http://dx.doi.org/10.1016/j.chemosphere.2024.143476 | DOI Listing |
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