Effect of metal ions on pea alcohol dehydrogenase

1979 ◽  
Vol 44 (3) ◽  
pp. 799-803 ◽  
Author(s):  
Sylva Leblová ◽  
Noemi Nováková ◽  
Marie Stiborová
Keyword(s):  
Heavy Metal ◽  
Alcohol Dehydrogenase ◽  
Metal Ions ◽  
Mechanism Of Action ◽  
Heavy Metal Ions ◽  
Inhibitory Effect ◽  
Zinc Ions ◽  
Pea Seeds

The effect of Cu2+, Ag+, Zn2+, Cd2+ and Co2+ on alcohol dehydrogenase (ADH) isolated from germinating pea seeds was examined. The enzyme is inhibited approximately to the same degree if incubated 5 to 30 min with Ag+, Cu2+, and Cd2+; the same degree of inhibition can be brought about by zinc ions only if concentration by one order higher (10-4M) is used. Co2+-ions do not inhibit pea alcohol dehydrogenase even at 10-3M concentration. NAD and Zn2+ decrease the inhibitory effect of Cd2+ yet not the effect of Cu2+ or Ag+. The differences in the mechanism of action of individual heavy metal ions on plant ADH are discussed.

Gram-scale synthesis of monodisperse sulfonated polystyrene nanospheres for rapid and efficient sequestration of heavy metal ions

2017 ◽  
Vol 53 (95) ◽  
pp. 12766-12769 ◽  
Author(s):  
Bin Gong ◽  
Yaotian Peng ◽  
Ziyan Pan ◽  
Weiming Chen ◽  
Yi Shen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Large Scale ◽  
Zinc Ions ◽  
Sulfonated Polystyrene ◽  
Copper And Zinc ◽  
Polystyrene Nanospheres

Large-scale monodisperse sulfonated polystyrene nanospheres are synthesized for the removal of lead, copper and zinc ions from aqueous solutions.

scholarly journals Lettuce Leaves as Biosorbent Material to Remove Heavy Metal Ions from Industerial Wastewater

2014 ◽  
Vol 11 (3) ◽  
pp. 1164-1170
Author(s):  
Baghdad Science Journal
Keyword(s):  
Heavy Metal ◽  
Environmental Factors ◽  
Metal Ions ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Current Data ◽  
Zinc Ions ◽  
Biosorption Capacity ◽  
Copper And Zinc

The current study was designed to remove Lead, Copper and Zinc from industrial wastewater using Lettuce leaves (Lactuca sativa) within three forms (fresh, dried and powdered) under some environmental factors such as pH, temperature and contact time. Current data show that Lettuce leaves are capable of removing Lead, Copper and Zinc ions at significant capacity. Furthermore, the powder of Lettuce leaves had highest capability in removing all metal ions. The highest capacity was for Lead then Copper and finally Zinc. However, some examined factors were found to have significant impacts upon bioremoval capacity of studied ions, where best biosorption capacity was found at pH 4, at temperature 50º C and contact time of 1 hour.

scholarly journals Compatible Adsorption of Strontium and Zinc Ions as Well as Vitamins on Zeolites

2000 ◽  
Vol 18 (4) ◽  
pp. 295-306 ◽  
Author(s):  
V. Gomonaj ◽  
P. Gomonaj ◽  
N. Golub ◽  
K. Szekeresh ◽  
B. Charmas ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Adsorption Isotherms ◽  
Heavy Metal Ions ◽  
Vitamin B ◽  
Zinc Ions ◽  
Adsorption And Desorption ◽  
Simultaneous Loss

Adsorbents based on natural Sokyrnytsky clinoptilolite have been prepared by treating the base sorbent with aqueous solutions of different salts or acids (HCl, NH4OH or NaCl). The separate adsorption of Zr2+ and Sr2+ ions and of vitamin B1 together with the joint adsorption of Sr2+ ions and vitamin B1 has been investigated on the prepared samples. The adsorption isotherms of the cations were studied both against concentration and time, when superposition of the adsorption and desorption curves was observed. This suggests the possibility of using such adsorbents for the isolation of heavy metal ions from human organisms without simultaneous loss of vitamin B1.

Bioadsorption of Multiple Heavy Metal Ions by Rhizophora Apiculate sp. and Elaesis Guineensis sp.

2017 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
M.B. Nicodemus Ujih ◽  
Mohammad Isa Mohamadin ◽  
Milla-Armila Asli ◽  
Bebe Norlita Mohammed
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Agricultural Waste ◽  
Living Organism ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Electrochemical Treatment ◽  
Chemical Oxidation

Heavy metal ions contamination has become more serious which is caused by the releasing of toxic water from industrial area and landfill that are very harmful to all living organism especially human and can even cause death if contaminated in small amount of heavy metal concentration. Currently, peoples are using classic method namely electrochemical treatment, chemical oxidation/reduction, chemical precipitation and reverse osmosis to eliminate the metal ions from toxic water. Unfortunately, these methods are costly and not environmentally friendly as compared to bioadsorption method, where agricultural waste is used as biosorbent to remove heavy metals. Two types of agricultural waste used in this research namely oil palm mesocarp fiber (Elaesis guineensis sp.) (OPMF) and mangrove bark (Rhizophora apiculate sp.) (MB) biomass. Through chemical treatment, the removal efficiency was found to improve. The removal efficiency is examined based on four specification namely dosage, of biosorbent to adsorb four types of metals ion explicitly nickel, lead, copper, and chromium. The research has found that the removal efficiency of MB was lower than OPMF; whereas, the multiple metals ions removal efficiency decreased in the order of Pb2+ > Cu2+ > Ni2+ > Cr2+.

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