The Effect of Ammonium Sulfate on the Sulphate Reducing Bacteria Bio-Derived Material

2016 ◽  
Vol 723 ◽  
pp. 529-533
Author(s):  
Guang Yuan Wang ◽  
Xing Yu Liu ◽  
Qi Yuan Gu ◽  
Ming Jiang Zhang ◽  
Jian Kang Wen
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Anaerobic Metabolism ◽  
Inorganic Nitrogen ◽  
Inorganic Nitrogen Source ◽  
Sulphate Reducing Bacteria ◽  
Autotrophic Bacteria ◽  
Lead Zinc ◽  
Reducing Bacteria

The lead-zinc tailings, a kind of hazardous wastes, containing large amount of heavy metals with high extraction toxicity, which would be released into solution with water, oxygen, microorganism and make the environment contaminated. Sulfide ion and alkaline substance were produced with the growth and anaerobic metabolism of sulphate reducing bacteria, inhibiting the oxidation and release of heavy metal ions from the lead-zinc tailings. Sulphate reducing bacteria attached on the calcined activated carbon while growing in the nutrient solution, which could be used to decline heavy metal ions as bio-derived material. Inorganic nitrogen source could be used by autotrophic bacteria effectively and was negative for the sulphate reducing bacteria to deposit toxic elements in the solution.

scholarly journals HEAVY METALS (Pb+2, Ni+2, Zn+2) REMOVAL FROM WASTEWATER USING LOW COST ADSORBENTS: A REVIEW

2021 ◽  
Vol 25 (Special) ◽  
pp. 3-88-3-96
Author(s):  
Hibatallah J. Shamkhi ◽  
◽  
Tamara K. Hussein ◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Membrane Separation ◽  
Low Cost ◽  
Chemical Separation ◽  
Skin Contact ◽  
Lead Zinc ◽  
Living Organisms

Pollution with heavy metal ions lead, zinc and nickel resulting from industrial wastewater for various industries such as electroplating industry, batteries, metal refining mines and other factories which discharge into the environment causing damage and pollution to the environment, living organisms, and the majority of heavy metals carcinogenic due to its high toxicity and its containment of dangerous chemicals. Potential danger to human health in all forms by ingestion, inhalation, or skin contact pose by heavy metals ions such as lead, nickel, zinc, and others. To prevent hazards, they must be removed before disposal by different methods such as ion- exchange, chemical separation, filtration, membrane separation, and adsorption. The purpose of this research is to review different low cost adsorbent materials to remove heavy metal ions lead, zinc and nickel from wastewater.

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+.

Comparative Bio-sorption of Cadmium and Nickel Ions from Aqueous Solution onto Fibers of Date Palm using Fluidized Bed Column

2019 ◽  
Vol 70 (5) ◽  
pp. 1507-1512
Author(s):  
Baker M. Abod ◽  
Ramy Mohamed Jebir Al-Alawy ◽  
Firas Hashim Kamar ◽  
Gheorghe Nechifor
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Date Palm ◽  
Operating Conditions ◽  
Initial Concentration ◽  
Bed Height

The aim of this study is to use the dry fibers of date palm as low-cost biosorbent for the removal of Cd(II), and Ni(II) ions from aqueous solution by fluidized bed column. The effects of many operating conditions such as superficial velocity, static bed height, and initial concentration on the removal efficiency of metal ions were investigated. FTIR analyses clarified that hydroxyl, amine and carboxyl groups could be very effective for bio-sorption of these heavy metal ions. SEM images showed that dry fibers of date palm have a high porosity and that metal ions can be trapped and sorbed into pores. The results show that a bed height of 6 cm, velocity of 1.1Umf and initial concentration for each heavy metal ions of 50 mg/L are most feasible and give high removal efficiency. The fluidized bed reactor was modeled using ideal plug flow and this model was solved numerically by utilizing the MATLAB software for fitting the measured breakthrough results. The breakthrough curves for metal ions gave the order of bio-sorption capacity as follow: Cd(II)]Ni(II).

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