Since 2009, RemBind’s products have continued to evolve based on customer feedback and changing market demand.
BINDING SHORT- AND LONG- CHAIN PFAS
Our first PFAS remediation products used between 2014 – 2016 were primarily designed to bind short- and long-chain PFAS compounds. RemBind and RemBind Plus filled a market need at the time and were used in several of the world’s first PFAS immobilisation projects in the USA, Sweden and Australia.
The next challenge was to develop a product that could allow the onsite reuse of treated soils. The key question from regulators worldwide was “How long is the immobilisation stable for?”. While immobilization is the most cost-effective and practical technology available for the remediation of PFAS in soil (Ross et al, 2018), proving its long-term durability is critical in paving the way for soil recycling as a sustainable alternative to landfill.
LONG-TERM STABILITY
Based on this feedback, RemBind 100 was released in 2017, the first product to be specifically optimized for long-term stability. RemBind 100 superseded RemBind and RemBind Plus and continues to be the most popular RemBind product to date.
Using US EPA LEAF methods, RemBind 100 shows a high level of resilience against a wide range of environmental conditions including variations in pH, competing ions, organic matter and temperature (Kabiri and McLaughlin, 2021).
Long-term stability simulations have been independently validated in the field, with a US study showing insignificant leaching after monitoring for 4 years to date under worst case scenario conditions (McDonough et al, 2022). We look forward to reporting on future monitoring events at this site.
ENHANCED PFAS BINDING
Our latest product release, RemBind 100X, is our most powerful formulation to date, for those tougher jobs that demand maximum leachability reductions. RemBind 100X is already proving its worth with a recent US study showing that a 1% dose of RemBind 100X achieved a leachability reduction of 99.99% for the short-chain compound PFBS.
RemBind 100X has the same built-in durability as RemBind 100, with additional PFAS sorptive power. A recent study by Zhang and Liang (2022) reported that RemBind 100X outperformed GAC and Biochar in terms of PFAS sorption and long-term stability (115 days).
Watch this space for our next product releases, as we strive to keep pace with market demands to retain our reputation as World’s Best Practice for PFAS immobilization in soil.
References:
Ross, I., McDonough, J., Miles, J., Storch, P., Kochunarayanan, P. T., Kalve, E., Hurst, J., S. Dasgupta, S., Burdick, J. A review of emerging technologies for remediation of PFASs. Remediation, 2018, 28 (2), 101 – 126.
https://doi.org/10.1002/rem.21553
Kabiri, S.; McLaughlin, M. J. Durability of sorption of per‐ and polyfluorinated alkyl substances in soils immobilized using common adsorbents: 2. Effects of repeated leaching, temperature extremes, ionic strength and competing ions. Sci. Total Environ. 2021, 766, 144718.
https://doi.org/10.1016/j.scitotenv.2020.144718
McDonough, J.T.; Anderson, R.H.; Lang, J.R.; Liles, D.; Matteson, K.; Olechiw, T. Field‐Scale Demonstration of PFAS Leachability Following In Situ Soil Stabilization. ACS Omega 2022, 7, 1, 419‐429.
https://doi.org/10.1021/acsomega.1c04789