Fluorescent characteristics and metal binding properties of individual molecular weight fractions in municipal solid waste leachate

2012 ◽  
Vol 162 ◽  
pp. 63-71 ◽  
Author(s):  
Jun Wu ◽  
Hua Zhang ◽  
Li-Ming Shao ◽  
Pin-Jing He
Keyword(s):  
Molecular Weight ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Metal Binding ◽  
Binding Properties ◽  
Molecular Weight Fractions ◽  
Waste Leachate

scholarly journals Phytoaccumulation of heavy metals from municipal solid waste leachate using different grasses under hydroponic condition

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Malik Muhammad Hassan ◽  
Noor Haleem ◽  
Muhammad Anwar Baig ◽  
Yousuf Jamal
Keyword(s):  
Heavy Metals ◽  
Electrical Conductivity ◽  
Municipal Solid Waste ◽  
Chemical Oxygen Demand ◽  
Solid Waste ◽  
Oxygen Demand ◽  
Elephant Grass ◽  
Vetiver Grass ◽  
Rhodes Grass ◽  
Waste Leachate

Abstract Grasses have been used widely to remediate contaminants present in domestic wastewater, but leachate generated from municipal solid waste that usually contain some concentrations of heavy metals has never been reported to be treated with grasses, especially Rhodes grass. A series of experiments was performed to investigate the contaminant uptake from municipal solid waste leachate by Chloris gayana (Rhodes grass) grown in combination with two commonly available grass varieties namely Vetiveria zizanioides (Vetiver grass) and Pennisetum purpureum (Elephant grass). Leachate used for the experiments had high values for chemical oxygen demand (5 g/L), pH (8.5), electrical conductivity (9.0 mS/cm), nitrates (182.1 mg/L), phosphates 6.4 mg/L along with heavy metals i.e. copper, zinc and manganese. Different dilutions of leachate ranging from 0 to 100% were applied in batches and their result showed that collectively all the grasses reduced overall contaminant concentrations. These were reported for chemical oxygen demand, electrical conductivity, nitrates, and phosphates reduced up to 67, 94, 94, and 73%, respectively. Metals uptake by grasses also showed a significant decrease in applied dose i.e. zinc (97%), copper (89%), and manganese (89%). Plant analysis showed that all grasses showed preference to heavy metals uptake e.g. Rhodes grass favoured up taking zinc, Elephant grass for copper and Vetiver grass preferred manganese. Overall growth performance of Rhodes grass was better in dilute leachate, whereas in more concentrated leachate, Rhodes grass did not perform better and production of biomass decreased. In Vetiver grass, root and shoot lengths decreased with increasing leachate strength, but the biomass did not change significantly.

scholarly journals Bioaccumulation of silver and the isolation of metal-binding protein from P.diminuta

2001 ◽  
Vol 44 (3) ◽  
pp. 223-225 ◽  
Author(s):  
Zaharah Ibrahim ◽  
Wan Azlina Ahmad ◽  
Abu Bakar Baba
Keyword(s):  
Molecular Weight ◽  
Metal Binding ◽  
Metal Uptake ◽  
Silver Ions ◽  
Low Molecular Weight ◽  
Early Exponential Phase ◽  
Binding Properties ◽  
Bacterial Cultures ◽  
Sds Page ◽  
Pseudomonas Diminuta

A silver uptake study by Pseudomonas diminuta was carried out by growing the bacteria in a chloride-free medium (CFM) containing silver ions (50 muM) in a batch culture. From the results, it was found that higher amounts of silver were accumulated inside the cell during early exponential phase compared to the amount bound at the cell surface. This suggested a possible mechanism for metal uptake during bacterial growth. In view of this, attempts were made to isolate proteins which might be associated with silver-binding properties from cultures of P.diminuta grown in the presence and absence of silver. The proteins were first extracted from the bacterial cultures by precipitation with ammonium sulfate followed by purification using isoelectric focussing and SDS-PAGE. Results of the experiment showed the presence of low molecular weight and high molecular weight proteins containing silver with pI values ranging from 2.0 to 9.0 for bacteria grown in the presence of silver.

Anaerobic-Aerobic Treatment of Municipal Solid Waste Leachate

1999 ◽  
Vol 20 (2) ◽  
pp. 211-217 ◽  
Author(s):  
L. Borzacconi ◽  
I. López ◽  
M. Ohanian ◽  
M. Viñas
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Aerobic Treatment ◽  
Waste Leachate

scholarly journals Liner Materials Exposed To Municipal Solid Waste Leachate

1985 ◽  
Vol 3 (1) ◽  
pp. 41-54 ◽  
Author(s):  
Henry E. Haxo ◽  
Richard M. White ◽  
Paul D. Haxo ◽  
Michael A. Fong
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Leachate
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