Manganese waste water treatment by fungi derived from manganese slag

2010 ◽  
Vol 62 (5) ◽  
pp. 1183-1189
Author(s):  
Yu-Zhu Ou-yang ◽  
Jian-Bing Cao ◽  
Xiao-Ming Li ◽  
Wei Zheng ◽  
Dong-Bo Wang ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Incubation Temperature ◽  
Rotation Speed ◽  
Ph Value ◽  
Water Solution ◽  
Waste Water Treatment ◽  
High Adsorption ◽  
Initial Ph ◽  
Manganese Slag

The aim of this study was to isolate a mould from the surface of manganese slag which had strong resistance and high adsorption of Mn2 + , and to determine the effects of initial Mn2 +  concentration, incubation temperature, rotation speed and inoculation amount on adsorption of Mn2 +  from manganese waste water solution. The result showed that a mould (A5) which was isolated from manganese slag had the adsorption rate of Mn2 +  to 97.5% at the initial pH value 6, inoculation amount 2%, rotation speed 150 r/min, a concentration of Mn2 +  500 mg/L, and a temperature of 28°C cultivated for 50 h. As there is no research on adsorption of Mn2 +  from manganese waste water by fungi before, this research showed a theoretical guidance on this field.

Methodological trends in preparation of activated carbon from local sources and their impacts on production: A review

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Waste Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Gas Separation ◽  
Waste Water Treatment ◽  
High Surface ◽  
High Surface Area ◽  
High Adsorption ◽  
Local Sources ◽  
Adsorption Rates

Activated carbon, also known as activated charcoal, which is crude form of graphite, substance which is used lead pencils. Activated carbon is widely used in dye removal and also has other applications. Activated carbon has high surface area, adsorption capacity, and high adsorption rates from the gas or liquid phases. Activated carbon is also used in air purification, chromatography, energy storage, electrode materials for li-ion batteries biosensors, hydrogen storage, immobilizing the biomolecules. Therefore, activated carbon has wide applications. It is used in gas separation, solvents recovery and as catalyst. It is also used in waste-water treatment plants to remove the organic pollutants from the drinking water. For most of these applications, activated carbon is prepared from many resources by implementation of different chemical methods. The Activated carbon can also be prepared by different raw carbon resources like lignite, peat, unburnt coal and biomass wastes such as wood, sawdust, sugar cane bagasse, coconut shell, coffee beans, oil-palm stone, and Rice husk. Ligno-cellulosic waste materials, paulownia wood, pomegranate seeds, cattail, olive-tree, jatropha hull, bamboo, orange peel, thevetia peruviana, ramie, grape stalk, pine apple waste biomass, and almond shell. Activated carbon is also produced by pyrolysis of physic nut waste. Activated Carbon, prepared from all these sources, have high surface area, adsorption capacity, high adsorption rates for liquid gas separation, adsorption. Activated Carbon is widely used in waste water treatment to remove the pollutants. This review explores some of methods to prepare the activated carbon from different local sources reported by many researchers in recent years.

Surface Coating TiO2 on Sepiolite Fibers and Application in Paper-making Waste Water Treatment

2010 ◽  
Vol 1279 ◽  
Author(s):  
Yajie Guo ◽  
Yuran Wang ◽  
Guangjian Wang ◽  
Zhengwang Liu ◽  
Zhengxing Yang ◽  
...  
Keyword(s):  
Waste Water ◽  
Electron Microscope ◽  
Water Treatment ◽  
Potassium Dichromate ◽  
Waste Water Treatment ◽  
Sol Gel ◽  
Oxygen Depletion ◽  
Paper Making ◽  
Water Treatment Process ◽  
Initial Ph

AbstractThe purpose of this paper was to describe a method of preparing Fe-TiO2 supported on sepiolite fibers with sol-gel method and to discuss the feasibility of photocatalytic degradation of paper-making waste water with chemical oxygen depletion (CODcr) (Potassium dichromate method) as evaluation criterion of catalytic activity. As-fabricated catalysts consisted of TiO2 particles impregnated with iron and dispersed on the sepiolite fibers (S.F.s). The novel Fe-TiO2-sepiolite was characterized by specific surface area and pore size distribution measurements, scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD) and Fourier transform Infrared spectrometer (FT-IR) etc. The effects of parameters such as the amount of Ti/sepiolite fibers, initial pH, H2O2, Fe-doped, concentration of waste water, etc. were studied in detail. The results indicated that the presence of sepiolite in the support preparation and its role as a matrix over which TiO2 particles were dispersed seem to play an important effect in the migration process of oxygen species through the support vacancies. On the basis of these properties, the most promising carriers to be used in a waste water treatment process were selected.

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

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