A conceptual study on the formulation of a permeable reactive pavement with activated carbon additives for controlling the fate of non-point source environmental organic contaminants | Health & Environmental Research Online (HERO)

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HERO ID

4167703

Reference Type

Journal Article

Title

A conceptual study on the formulation of a permeable reactive pavement with activated carbon additives for controlling the fate of non-point source environmental organic contaminants

Author(s)

Huang, S; Liang, C

Year

2018

Is Peer Reviewed?

Yes

Journal

Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298

Volume

193

Page Numbers

438-446

Language

English

PMID

29154119

DOI

10.1016/j.chemosphere.2017.11.028

Web of Science Id

WOS:000423890500053

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034092815&doi=10.1016%2fj.chemosphere.2017.11.028&partnerID=40&md5=7bb5e773ed76e2adf772c45d7f4049df
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Abstract

To take advantage of the road pavement network where non-point source (NPS) pollution such as benzene, toluene, ethyl-benzene, and xylene (BTEX) from vehicle traffic exhaust via wet and dry atmospheric deposition occurs, the asphalt pavement may be used as a media to control the NPS pollution. An experiment to prepare an adsorptive porous reactive pavement (PRP) was initiated to explore the potential to reduce environmental NPS vehicle pollution. The PRP was prepared and studied as follows: various activated carbons (AC) were initially screened to determine if they were suitable as an additive in the porous asphalt mixture; various mixtures of a selected AC were incorporated with the design of porous asphalt concrete (PAC) to produce PRP, and the PRP formulations were tested to ensure that they comply with the required specifications; qualified specimens were subsequently tested to determine their adsorption capacity for BTEX in aqueous solution, as compared to conventional PAC. The PRP08 and PRP16 samples, named for the design formulations of 0.8% and 1.6% of AC (by wt. in the formulation), exhibited low asphalt drain-down and low abrasion loss and also met all regulated specifications. The BTEX adsorption capacity measurements of PRP08 and PRP16 were 33-46%, 36-51%, 20-22%, and 6-8% respectively, higher than those obtained from PACs. Based on the test results, PRPs showed good physical performance and adsorption and may be considered as a potential method for controlling the transport of NPS vehicle pollutants.