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Title: Soil washing enhancement with solid sorbents

Abstract

Soil washing is a dynamic, physical process that remediates contaminated soil through two mechanisms: particle size separation and transfer of the contaminant into the (mostly) liquid stream. The performance of different sorbents and additives to remove motor oil from sea sand was tested. Hydrocyclone, attrition scrubber, and froth flotation equipment were used for the decontamination study. Sorbents and additives were mixed with soils in the attrition scrubber prior to flotation. Sorbents used were granular activated carbon, powder activated carbon, and rubber tires. Chemical additives used were calcium hydroxide, sodium carbonate, Alconox{reg_sign}, Triton{reg_sign} X-100 and Triton{reg_sign} X-114. When a froth flotation run was performed using no additive, washed soils {open_quotes}tails{close_quotes} contained 4000 ppm of total oil and grease (TOG). However, when carbon or rubber (6% by weight) was added to the contaminated soils the washed soils {open_quotes}tails{close_quotes} contained 4000 ppm of total oil and grease (TOG). The addition of sodium carbonate or calcium hydroxide (6% by weight) had same effects as sorbents. In both cases washed soil {open_quotes}tails{close_quotes} contained total oil and grease of less than 1000 ppm. The use of these non-hazardous additives or sorbent can enhance the soil washing process and consequently saves on time (residence time in equipmentmore » design) required to achieve the target clean up levels. 18 refs., 12 figs.« less

Authors:
 [1];  [2]
  1. Merck & Co., Somerset, NJ (United States)
  2. GE Corporate Research & Development, Schenectady, NY (United States)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
482262
Resource Type:
Journal Article
Journal Name:
Environmental Progress
Additional Journal Information:
Journal Volume: 15; Journal Issue: 3; Other Information: PBD: Fal 1996
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 02 PETROLEUM; SOILS; REMEDIAL ACTION; LUBRICATING OILS; SORPTION; CARBON; SORPTIVE PROPERTIES; WASHING; ACTIVATED CARBON; ADDITIVES; FLOTATION; PARTICLE SIZE; TIRES; SEPARATION PROCESSES; CALCIUM HYDROXIDES; SODIUM CARBONATES

Citation Formats

El-Shoubary, Y M, and Woodmansee, D E. Soil washing enhancement with solid sorbents. United States: N. p., 1996. Web. doi:10.1002/ep.670150316.
El-Shoubary, Y M, & Woodmansee, D E. Soil washing enhancement with solid sorbents. United States. https://doi.org/10.1002/ep.670150316
El-Shoubary, Y M, and Woodmansee, D E. 1996. "Soil washing enhancement with solid sorbents". United States. https://doi.org/10.1002/ep.670150316.
@article{osti_482262,
title = {Soil washing enhancement with solid sorbents},
author = {El-Shoubary, Y M and Woodmansee, D E},
abstractNote = {Soil washing is a dynamic, physical process that remediates contaminated soil through two mechanisms: particle size separation and transfer of the contaminant into the (mostly) liquid stream. The performance of different sorbents and additives to remove motor oil from sea sand was tested. Hydrocyclone, attrition scrubber, and froth flotation equipment were used for the decontamination study. Sorbents and additives were mixed with soils in the attrition scrubber prior to flotation. Sorbents used were granular activated carbon, powder activated carbon, and rubber tires. Chemical additives used were calcium hydroxide, sodium carbonate, Alconox{reg_sign}, Triton{reg_sign} X-100 and Triton{reg_sign} X-114. When a froth flotation run was performed using no additive, washed soils {open_quotes}tails{close_quotes} contained 4000 ppm of total oil and grease (TOG). However, when carbon or rubber (6% by weight) was added to the contaminated soils the washed soils {open_quotes}tails{close_quotes} contained 4000 ppm of total oil and grease (TOG). The addition of sodium carbonate or calcium hydroxide (6% by weight) had same effects as sorbents. In both cases washed soil {open_quotes}tails{close_quotes} contained total oil and grease of less than 1000 ppm. The use of these non-hazardous additives or sorbent can enhance the soil washing process and consequently saves on time (residence time in equipment design) required to achieve the target clean up levels. 18 refs., 12 figs.},
doi = {10.1002/ep.670150316},
url = {https://www.osti.gov/biblio/482262}, journal = {Environmental Progress},
number = 3,
volume = 15,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}