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| 1 | pH-dependent leaching behaviour and other performance properties of cement-treated mixed contaminated soil显示文摘Portland cement has been widely used for stabilisation/solidification(S/S) treatment of contaminated soils.However,there is a dearth of literature on pH-dependent leaching of contaminants from cement-treated soils.This study investigates the leachability of Cu,Pb,Ni,Zn and total petroleum hydrocarbons(TPH) from a mixed contaminated soil.A sandy soil was spiked with 3000 mg/kg each of Cd,Cu,Pb,Ni and Zn,and 10,000 mg/kg of diesel,and treated with ordinary Portland cement(CEM I).Four different binder dosages,5%,10%,15% and 20%(m/m) and different water contents ranging from 13%-19% dry weight were used in order to find a safe operating envelope for the treatment process.The pH-dependent leaching behaviour of the treated soil was monitored over an 84-day period using a 3-point acid neutralisation capacity(ANC) test.The monolithic leaching test was also conducted.Geotechnical properties such as unconfined compressive strength(UCS),hydraulic conductivity and porosity were assessed over time.The treated soils recorded lower leachate concentrations of Ni and Zn compared to the untreated soil at the same pH depending on binder dosage.The binder had problems with Pb stabilisation and TPH leachability was independent of pH and binder dosage.The hydraulic conductivity of the mixes was generally of the order,10-8 m/sec,while the porosity ranged from 26%-44%.The results of selected performance properties are compared with regulatory limits and the range of operating variables that lead to acceptable performance described. | Reginald B. Kogbara Abir Al-Tabbaa Yaolin Yi Julia A. Stegemann | 2012 | Journal of Environmental Sciences2012，24，9： | 8 |
| 2 | Bioremediation of a crude-oil polluted agricultural-soil at Port Harcourt, Nigeria显示文摘 | M.J. Ayotamuno R.B. Kogbara S.O.T. Ogaji S.D. Probert | 2006 | Applied Energy2006，，11： | 2 |
| 3 | A review of the mechanical and leaching performance of stabilized/ solidified contaminated soils 显示文摘 | Reginald B Kogbara | 2014 | Environmental Reviews2014，22，1： | 1 |
| 4 | Bioremediation of a crude-oilpolluted agrieultural-soilat Port Harcourt, Nigeria显示文摘 | AYOTAMUNO M J KOGBARA R B OGAJS O T | 2006 | Appl Energ2006，83，11： | 1 |
| 5 | Composting and phytoremediation treatment of petro- leum sludge 显示文摘 | Ayotamuno Josiah M Kogbara Reginald B Agele Eriye A | 2010 | Soil Sediment Contain2010，19，6： | 1 |
| 6 | A review of concrete properties at cryogenic temperatures:towards direct LNG containment显示文摘 | KOGBARA R B IYENGAR S R GRASLEY Z C | 2013 | Construction andBuilding Materials2013，47，10： | 1 |
| 7 | Bioremediation of a crude -oil polluted agricultural soil at Port Harcourt, Nigeria显示文摘 | Ayotamuno M J Kogbara R B | 2006 | Applied Energy2006，2006，： | 1 |
| 8 | Mechanical and leaching behaviour of slag-cement and lime-activated slag stabilised/solidified contaminated soil显示文摘 | Reginald B. Kogbara Abir Al-Tabbaa | 2011 | Science of the Total Environment2011，，11： | 1 |
| 9 | Bioremediation of a crude-oil polluted agricultural-soilat PortHarcourt, Nigeria显示文摘 | Ayotamuno M J Kogbara R B Ogajs O T | 2006 | Applied Energy2006，83，11： | 1 |
| 10 | Petroleum contaminated ground-water: Remediation using activated carbon 显示文摘 | Ayotamuno M J Kogbara R B Ogaji S O T | 2006 | Appl Energy2006，83，11： | 1 |
| 11 | Bioremediation of a crude-oil polluted agricultural-soil at Port Harcourt,Nigeria显示文摘 | AYOTAMUNO M J KOGBARA R B OGAJI S O T | 2006 | Applied Energy2006，83，11： | 1 |
| 12 | Bioremediation of a crude-oil polluted agricultural-soil at Port Harcourt, Nigeria显示文摘 | Ayotamuno MJ Kogbara RB Ogaji SOT | 2006 | Applied Energy2006，83，11： | 1 |
| 13 | Bioremediation of a crude-oil polluted agricultural-soil at PortHar-court,Nigeria显示文摘 | Ayotamuno M J Kogbara R B Ogaji S O T | 2006 | Appl Energy2006，83，： | 1 |
| 14 | Bioremediation of a crude-oil at Port Harcourt,Nigeria显示文摘 | AYOTAMUNO M J KOGBARA R B OGAJI S O T | 2006 | Applied Energy2006，83，11： | 1 |
| 15 | Petroleum contaminated ground-water: remediation using activated carbon显示文摘 | AYOTAMUNO M J KOGBARA R B OGAJI S O T | 2006 | Applied Energy2006，83，11： | 1 |
| 16 | Utilisation of magnesium phosphate cements to facilitate biodegradation within a stabilised/solidified contaminated soil显示文摘 | KOGBARA R B AL-TABBAA A TYENGAR S R | 2011 | Water Air Soil Pollut2011，216，41： | 1 |
| 17 | Mechanical and Leaching Behaviour of Slag-Cement and Lime- Activated Slag Stabilised/Solidified Contaminated Soil 显示文摘 | Reginald B Kogbara Abir AI-Tabbaa | 2011 | Science of the Total Environment2011，409，： | 1 |
| 18 | A review of concrete properties at cryogenic temperatures :Towards direct LNG containment 显示文摘 | Reginald B Kogbara | 2013 | Construction and Building Materials2013，47，： | 1 |
| 19 | Compos- ting and phytoremediation treatment of petroleum sludge 显示文摘 | Ayotamuno J M Kogbara R B Agele E A | | Soil and Sediment Contamination0，19，6： | 1 |
| 20 | Bioremediation of a Crude - oll Polluted Agricultural - soil at PortHar - court, Nigeria 显示文摘 | AyotamunoM J Kogbara R B Ogaji S O T et aL 2006 | 2006 | Apply Energy2006，85，： | 1 |
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