Feasibility of Tartaric Acid Washing of Soil Contaminated by Pb and Zn

2012 ◽  
Vol 550-553 ◽  
pp. 2194-2197 ◽  
Author(s):  
Lian Bi Zhou ◽  
Qiang Wu ◽  
Guo Long Gao
Keyword(s):  
Tartaric Acid ◽  
Soil Remediation ◽  
Environmental Quality ◽  
Contaminated Soil ◽  
Quality Standards ◽  
Residual Soil ◽  
Environmental Quality Standards ◽  
Acid Washing ◽  
Lead Zinc ◽  
Biological Methods

For lead-zinc contaminated soil, the principles, characteristics and application of traditional soil remediation were summarized, such as solidification/stabilization, electromotive method, phytoremediation and biological methods. The feasibility of tartaric acid washing of soil contaminated by Pb and Zn was studied. It demonstrated that it is feasible to remediate the soil contaminated by Pb and Zn by tartaric acid washing. The content of Pb and Zn in the residual soil achieved the National Soil Environmental Quality Standards.

scholarly journals Characteristics and Applications of Sewage Sludge Biochar Modified by Ferrous Sulfate for Remediating Cr(VI)-Contaminated Soils

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yuan-Yuan Li ◽  
Ting-Ting Zhang ◽  
Zhi Ning ◽  
Jin-Hong Chen ◽  
Kirk Hatfield
Keyword(s):  
Sewage Sludge ◽  
Sequential Extraction ◽  
Environmental Quality ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Extraction Procedure ◽  
Quality Standards ◽  
British Geological Survey ◽  
Environmental Quality Standards ◽  
Us Epa

Background. Soil contamination by hexavalent chromium is becoming a main environmental concern in China. This study developed a sewage sludge biochar modified by FeSO4 (CHBC) as a new reductant for Cr(VI)-contaminated soil. The effectiveness of CHBC-stabilized Cr(VI)-contaminated soil was investigated. Methods. Typical industrial Cr(VI)-contaminated soil in China was chosen as the medium. The total and Cr(VI) contents of the contaminated soil were 1014.6 and 973.5 mg/kg, respectively. The effectiveness of the Cr(VI)-contaminated soil stabilized by CHBC was investigated by the leaching test (US EPA method 1312), the simplified bioaccessibility extraction test (US EPA 2007 protocol and British Geological Survey), alkaline digestion (US EPA method 3060A), sequential extraction (BCR sequential extraction procedure), X-ray diffraction, and the risk assessment code test. Results. Results show that CHBC substantially reduced the leachability and Cr(VI) content of the contaminated soil. The leachability and content of Cr(VI) were lower than the thresholds of the Environmental Quality Standards of Soil in China for civil reuse and the China Environmental Quality Standards of surface water for civil use when the soil was stabilized with 10% dosage of CHBC. Conclusion. CHBC is highly efficient in stabilizing Cr(VI) and can effectively reduce the leachability and bioavailability of Cr in contaminated soil and thus feasible for stabilizing Cr(VI)-contaminated soil and shows potential for application in the field.

scholarly journals Analisis Kualitas Air Di Lahan Reklamasi Pertambangan Nikel Desa Mohoni, Petasia Timur, Morowali Utara

2020 ◽  
Vol 6 (1) ◽  
pp. 96
Author(s):  
FX Anjar Tri Laksono ◽  
Indra Permanajati ◽  
Rahmat Mualim
Keyword(s):  
Water Quality ◽  
Environmental Quality ◽  
Environmental Conditions ◽  
Quality Standards ◽  
Mining Activities ◽  
Environmental Quality Standards ◽  
Test Parameters ◽  
Nickel Mining ◽  
Quality Water ◽  
Reclamation Area

In Mohoni Village, East Petasia District, North Morowali Regency there are nickel mining activities that are carried out by PT. Asiamax Mining Indonesia. Several locations were mine out status. Hence, reclamation programs are made to improve environmental conditions before mining. One of these stages is water quality tests to ensure that the reclamation area is worthy to be a habitat for animals and plants. The purpose of this study is to find out the water quality in the reclamation area of the ex-nickel mining in Mohoni Village. The storet method is used to analyze water quality whose test parameters include pH, total suspanded solid (TSS), concentrations of copper (Cu), cadmium (Cd), zinc (Zn), lead (Pb), nickel (Ni), chromium valence 6, iron (Fe), manganese (Mn), and cobalt (Co) once every three months for a year.The quality water check results are compared with the environmental quality standards in accordance with law number 32 of 2009. Based on the average monitoring results show that the water quality is classified as moderately polluted. The conclusion from this study is that reclamation land might be not used as habitat for animals and plants because the availability of water is not suitable for consumption

scholarly journals Balancing environmental quality standards and infrastructure upgrade costs for the reduction of microcontaminant loads in rivers

2018 ◽  
Vol 143 ◽  
pp. 632-641 ◽  
Author(s):  
Pau Gimeno ◽  
Jo Severyns ◽  
Vicenç Acuña ◽  
Joaquim Comas ◽  
Lluís Corominas
Keyword(s):  
Environmental Quality ◽  
Quality Standards ◽  
Environmental Quality Standards

Environmental Quality Standards

Science ◽  
1972 ◽  
Vol 175 (4024) ◽  
pp. 836-836
Author(s):  
Charles F. Wurster
Keyword(s):  
Environmental Quality ◽  
Quality Standards ◽  
Environmental Quality Standards

scholarly journals Water quality and ecology of the River Lee: mass balance and a review of temporal and spatial data

2004 ◽  
Vol 8 (4) ◽  
pp. 636-650 ◽  
Author(s):  
D. L. Snook ◽  
P. G. Whitehead
Keyword(s):  
Water Quality ◽  
Point Source ◽  
Environmental Quality ◽  
Spatial Data ◽  
Nutrient Enrichment ◽  
Sewage Treatment ◽  
Quality Standards ◽  
Organic Substances ◽  
Aquatic Fauna ◽  
Environmental Quality Standards

Abstract. A regional overview of the water quality and ecology of the River Lee catchment is presented. Specifically, data describing the chemical, microbiological and macrobiological water quality and fisheries communities have been analysed, based on a division into river, sewage treatment works, fish-farm, lake and industrial samples. Nutrient enrichment and the highest concentrations of metals and micro-organics were found in the urbanised, lower reaches of the Lee and in the Lee Navigation. Average annual concentrations of metals were generally within environmental quality standards although, on many occasions, concentrations of cadmium, copper, lead, mercury and zinc were in excess of the standards. Various organic substances (used as herbicides, fungicides, insecticides, chlorination by-products and industrial solvents) were widely detected in the Lee system. Concentrations of ten micro-organic substances were observed in excess of their environmental quality standards, though not in terms of annual averages. Sewage treatment works were the principal point source input of nutrients, metals and micro-organic determinands to the catchment. Diffuse nitrogen sources contributed approximately 60% and 27% of the in-stream load in the upper and lower Lee respectively, whereas approximately 60% and 20% of the in-stream phosphorus load was derived from diffuse sources in the upper and lower Lee. For metals, the most significant source was the urban runoff from North London. In reaches less affected by effluent discharges, diffuse runoff from urban and agricultural areas dominated trends. High microbiological content, observed in the River Lee particularly in urbanised reaches, was far in excess of the EC Bathing Water Directive standards. Water quality issues and degraded habitat in the lower reaches of the Lee has led to impoverished aquatic fauna but, within the mid-catchment reaches and upper agricultural tributaries, less nutrient enrichment and channel alteration has permitted more diverse aquatic fauna. Keywords: River Lee, River Thames, water quality, nutrients, metals, ecology, hydrology, diffuse and point source pollution

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