Dunton Environmental conducted a bench scale trial using their Regener 8-19 solution to treat heavy metal contaminated soil provided by Hasky. Testing showed the solution successfully reduced levels of lead, aluminum, and iron in the soil by over 10%, 60%, and 32% respectively. The trial proved the Regener 8-19 product can significantly decrease heavy metal contamination in soils and further pilot testing was recommended to demonstrate effectiveness at a larger scale.

1. Registration No.
5839536
Abstract
In November 2016, Dunton Environmental was invited by Hasky to carry out a bench scale trial treatment on heavy
metal contaminated industrial soil. Dunton Environmental created a mix design product using Regener 8-19 solution
as the primary catalyst, coupled with other reagents. This mix design product was developed to reduce the
concentration of heavy metal contamination within the soil.
The trial treatment was conducted at the Tianjin trial site. All the samples were tested by the ALS Group.
This trial successfully proved the capability of the Regener8-19 solution to treat heavy metal contaminated soil, and
therefore, significantly reduce the risk of harm to human health and the environment from this material.
Regener 8-19 Technical Background
Regener 8-19 is applied to soils that are polluted with various heavy metal contaminants. The product acts to alter the
chemical environment within the solid matrix, allowing the reduction of the heavy metals from the solid. Regener 8-19
is applied in a liquid or powder medium to the solid waste by a variety of mechanisms depending on the nature and
composition of the soil or solid waste. On site, Regener 8-19 is mixed and distributed homogenously through the soil
or solid waste via Dunton Environmental’s Soterion batching plant; Dunton Environmental’s Stabilisation Unit or
Dunton Environmental’s Allu mixing process.
Regener 8-19 comprises specific metal-binding polymers that interact with the contaminants designated for reduction.
The chemical process involves the exchange of ions between the Regener 8-19 solution and the metals present with
the solid matrix, leading to the binding and immobilisation of the heavy metal contaminants.
Technical Case Study
Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX
www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk
Bench Scale Trial of Remediation of Heavy Metal Contaminated Industrial Soils from Hasky
Environmental Protection Science & Technology Development Co., Ltd

2. Registration No.
5839536
Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX
www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk
Technical Case Study
Project Background
Hasky Environmental Protection Science & Technology Development Co., Ltd is an integrated service provider of
environmental protection. Hasky has been offering integrated solutions for a wide array of industry requirements
including, water and river monitoring, engineering consulting, project management, core equipment manufacturing,
investment and operation, urban water management, ecological restoration, and VOC control.
Dunton (Beijing) visited Hasky for a technical meeting regarding Dunton’s
heavy metal remediation technology in November 2016. After the meeting,
Hasky showed an interest in Dunton’s technology, and commissioned
Dunton to carry out a trial treatment of approximately 10 kilograms of heavy
metal contaminated soil sample in November 2016.
Due to commercial protection reasons, Hasky cannot provide Dunton any
information related to the sampled soil.
After receiving the sample, Dunton commissioned ALS chemical laboratory to
determine initial heavy metal concentration, testing occurred on 6th
of
December 2016.
Solution
Regener 8-19 was used to reduce the heavy metal content
within the soil, the first treatment occurred after baseline
sample was obtained (6th
of December 2016). The soil was then
sampled and tested by ALS on 15th
of March 2017.
The soil was treated a second time after 15th
of March 2017 and
sampled on 24th
of April 2017, 12th
of May 2017 and 22th
of
September 2017.

3. Registration No.
5839536
Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX
www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk
Technical Case Study
Results
The results were recorded for each of the 3 contaminants (Pb, Al and Fe), all of which showed a significant reduction.
The degradation results and graphs are presented below.
Conclusion
Application of the proposed Regener 8-19 solution reduced the concentration of Pb, Al and Fe contaminants within the
soil by 10.6 %, 60.5 % and 32.6 %, respectively, which achieved the client’s requirement. As a result of this trial, the
Regener 8-19 product has proven its capability to significantly reduce heavy metal contaminants within the soil
samples provided by Hasky.
Since the trial test was carried out on a small scale, it would be beneficial to have a further cooperation with Hasky to
undertake a large-scale, on-site pilot project, to further prove the effectiveness of the Regener 8-19 product and to
demonstrate the ease of usage of the product under normal working conditions.
Figure 1 - Metal degradation over time.