Evaluation of environmentally friendly inhibitor for galvanic corrosion of steel–copper couple in petroleum waste water

2015 ◽  
Vol 98 ◽  
pp. 93-101 ◽  
Author(s):  
Anees A. Khadom ◽  
Ahmed F. Hassan ◽  
Baker M. Abod
Keyword(s):  
Waste Water ◽  
Galvanic Corrosion ◽  
Environmentally Friendly ◽  
Petroleum Waste ◽  
Corrosion Of Steel

scholarly journals Galvanic Corrosion Due to a Heterogeneous Sulfate Reducing Bacteria Biofilm

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1116
Author(s):  
Hongwei Liu ◽  
Haixian Liu ◽  
Yuxuan Zhang
Keyword(s):  
Galvanic Corrosion ◽  
Steel Corrosion ◽  
Localized Corrosion ◽  
Cathodic Reaction ◽  
Anodic Reaction ◽  
Sulfate Reducing ◽  
Corrosion Effect ◽  
Desulfotomaculum Nigrificans ◽  
Corrosion Of Steel ◽  
Reducing Bacteria

In this work, the galvanic corrosion behavior of sulfate reducing Desulfotomaculum nigrificans biofilm-covered and uncovered carbon steel was investigated using various electrochemical measurements. The results showed that the bare specimen in the abiotic solution functions as the anode; whereas the biofilm-covered specimen in the SRB-containing solution functions as the cathode after two electrodes being coupled. The anodic reaction of specimen in the biotic solution containing SRB was inhibited; whereas the cathodic reaction was considerably promoted after coupling. Hence, localized corrosion of specimen in the abiotic solution was observed due to the galvanic corrosion effect. SRB could still accelerate steel corrosion even after coupling, but the results indicate that the contribution of SRB to steel corrosion decreased. The localized corrosion of steel in the SRB-containing environments not only involved the SRB biofilm, but also a galvanic corrosion effect. The flow of electrons from the anodic dissolution of Fe in the abiotic solution to the SRB cells of cathodic area decreased the acceptance capacity of electrons by SRB from steel beneath biofilm. As a result, the steel corrosion beneath SRB biofilm decreased after coupling.

scholarly journals Formation of environmentally friendly chloroorganic compounds technology by sewage and by-products utilization

2007 ◽  
Vol 9 (3) ◽  
pp. 118-121 ◽  
Author(s):  
Jerzy Myszkowski ◽  
Eugeniusz Milchert ◽  
Waldemar Paździoch ◽  
Robert Pełech
Keyword(s):  
Waste Water ◽  
Activated Carbon ◽  
Vinyl Chloride ◽  
Propylene Oxide ◽  
Environmentally Friendly ◽  
Complete Removal ◽  
Purification Method ◽  
Water Waste ◽  
By Products ◽  
Removal And Recovery

Formation of environmentally friendly chloroorganic compounds technology by sewage and by-products utilization The processes presented in the study enables the separation and disposal of the chloroorganic compounds as by-products from the vinyl chloride plant by using the dichlorethane method and also from the production of propylene oxide by the chlorohydrine method. The integrated purification method of steam stripping and adsorption onto activated carbon allows a complete removal and recovery of the chloroorganic compounds from waste water. Waste distillation fraction is formed during the production of vinyl chloride. 1,1,2-trichloroethane separated from the above fraction, can be processed to vinylidene chloride and further to 1,1,1-trichloroethane. 2,3-Dichloropropene, 2-chloroallyl alcohol, 2-chloroallylamine, 2-chlorothioallyl alcohol or bis(2-chloroallylamine) can be obtained from 1,2,3-trichloropropane. In the propylene oxide plant the waste 1,2-dichloropropane is formed, which can be ammonolysed to 1,2-diaminopropane or used for the production of β-methyltaurine. Other chloroorganic compounds are subjected to chlorinolysis which results in the following compounds: perchloroethylene, tetrachloromethane, hexachloroethane, haxachlorobutadiene and hexachlorobenzene. The substitution of the milk of lime by the soda lye solution during the saponification of chlorohydrine eliminates the formation of the CaCl2 waste.

Study of Fine-Grained Composites Exposed to Sulfuric Acid and Sodium Sulfate

2016 ◽  
Vol 827 ◽  
pp. 275-278
Author(s):  
Martin Vyšvařil ◽  
Markéta Rovnaníková
Keyword(s):  
Waste Water ◽  
Sulfuric Acid ◽  
Sodium Sulfate ◽  
Sulfate Attack ◽  
Sewer Pipes ◽  
Sulfate Ions ◽  
Fine Grained ◽  
One Year ◽  
Corrosion Of Steel ◽  
Loss Of Strength

The degradation of concrete due to ingress of sulfate ions from the environment plays an important role in the durability of concrete constructions, especially in sewage collection systems where concrete sewer pipes are exposed to sulfates from waste water and from biogenic activity of bacteria. During this process the pH of the surface of concrete sewer pipes is reduced and it may lead to the steel depassivation and results in the corrosion of steel reinforcement. Damage due to sulfate interaction can result in the cracking and softening, with loss of strength of concrete. This paper is focused on the sulfate attack on fine-grained concrete where the effect of one-year contact of 0.5% H2SO4, and 5% Na2SO4 on changes of pH and content of sulfates in 7 types of concrete has been analyzed. It was found that after one year of sulfate attack on concrete, significant growth of content of sulfates is observed in the lowermost layer of the samples. Samples treated by 5% Na2SO4 contain slightly more sulfates in the upper layers than samples treated by sulfuric acid. The reduction in pH of aqueous leaches occurred in all layers of the samples. However, even in the lower layers of the samples, the reduction of pH below 9.5 did not turn up (except for SRS sample), and thus the conditions for the depassivation of reinforcement were not met.

scholarly journals Pemanfaatan Air Buangan Ac Untuk Tanaman Hias Berbasis Internet Of Things

2019 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
Eky Arjayanto Nurhasana ◽  
Hermansyah Hermansyah ◽  
Lely Aylia ◽  
Kasim Kasim
Keyword(s):  
Waste Water ◽  
Internet Of Things ◽  
Final Stage ◽  
Electronic Circuit ◽  
Electronic Devices ◽  
Ornamental Plants ◽  
Environmentally Friendly ◽  
Initial Stage ◽  
Iot Devices ◽  
The Right

In relation to utilizing AC waste water and the use of water in watering plantsespecially ornamental plants and provide awareness for efforts to save water. By usingapplication of Internet of Things (IoT) based electronic circuit which is one of the programsdeveloped to facilitate the process of watering and fertilizing plants automatically. One ofthe way you can do this is by using IoT devices as a control device.This product is expected to be a product that can be sold to the market at an affordable price. andhas a function that is environmentally friendly and can be used by all people in the future. Activitiesmaking this product starts with the initial stage of observing the room using AC and makingdesign model, after getting the right room, then is to prepare the device to beused to make products both electronic and non-electronic devices and finally prepare toolswhich will be used for installation and configuration of the tool. After the product is finished, the next is testingproduct. The final stage includes functional checks to determine whether the tool is functioning properly based onsystem design that has been designed.

Different Bioremediation Techniques for Management of Waste Water

2021 ◽  
pp. 1-18
Author(s):  
Biswajit Patra ◽  
Saroj Kumar Deep ◽  
Surya Narayan Pradhan
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Contamination ◽  
Treatment Process ◽  
Environmentally Friendly ◽  
Metabolic Diversity ◽  
Wastewater Treatment Process ◽  
Photosynthetic Microorganisms ◽  
Minimal Effort

Water contamination remains an issue. A combination of biodegradation and nanotechnology is proposed as a potential proficient, minimal effort, and naturally amiable system to deal with it. Among different mediations, bioremediation procedures can conceivably be utilized to decrease the versatility of materials in the subsurface, reducing the potential for human and ecological exposure. The metabolic diversity of microorganisms ensures an assortment of substrates to be expended. Photosynthetic microorganisms have been found as a compelling and eco-friendly species that can remove carbon, nitrogen, and phosphorous in the manufactured sewage and wastewater. This chapter particularly emphasizes environmentally friendly NMs that give information for removing contaminants from wastewater and effluents. Additionally, various nanocomposites and different natural methods utilized in the wastewater treatment process are also briefly discussed.

scholarly journals Evaluating the TiO2 as a solar photocatalyst process by response surface methodology to treat the petroleum waste water

2015 ◽  
Vol 1 (2) ◽  
pp. 78-85 ◽  
Author(s):  
Dheeaa al deen Atallah Aljuboury ◽  
Puganeshwary Palaniandy ◽  
Hamidi Bin Abdul Aziz ◽  
Shaik Feroz
Keyword(s):  
Waste Water ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Petroleum Waste ◽  
Solar Photocatalyst

scholarly journals Galvanic Corrosion of Ductile Cast Iron Coupled with Different Alloys in Synthetic Domestic Waste Water

2019 ◽  
Vol 70 (2) ◽  
pp. 506-511 ◽  
Author(s):  
Cristian Savin ◽  
Carmen Nejneru ◽  
Manuela Cristina Perju ◽  
Costica Bejinariu ◽  
Diana Burduhos-Nergis ◽  
...  
Keyword(s):  
Waste Water ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Galvanic Corrosion ◽  
Nodular Cast Iron ◽  
Ductile Cast Iron ◽  
Aluminum Bronze ◽  
Metallic Materials ◽  
Low Alloy Steel ◽  
Domestic Waste

Waste water is an aggressive environment for transport pumps to treatment plants. The pumps used are generally, immersion pumps and are made of various elements like, rotor, stator, housing, screws, flanges, springs, seals, etc. The construction elements of the pumps are made of various metallic materials, such as nodular cast iron, gray cast iron, low alloy steel, stainless steel, aluminum, bronze, brass, copper, etc. When immersed in waste water, the metals form galvanic series. The paper presents the galvanic corrosion analysis of the above-mentioned metals in case the corrosive environment is waste water with various compositions.

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