water phosphate Articles
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Simultaneous sorption of aqueous phenanthrene and phosphate onto bentonites modified with AlCl3 and CTMAB
The purpose of this work is to synthesize a new type of bentonite sorbent that can simultaneously remove both organic compounds and phosphate from water. Inorganic-organic bentonites (Al-CTMAB-Bent) were synthesized by modifying bentonites with both AlCl3 and cetyltrimethyl ammonium bromide (CTMAB). Simultaneous sorption of aqueous phenanthrene and phosphate onto Al-CTMAB-Bent was examined. ...
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Layered double hydroxide (LDH)-coated attapulgite for phosphate removal from aqueous solution
In this study, a composite adsorbent, layered double hydroxide (LDH)-coated attapulgite (LDH-AP), was synthesized and characterized. Its potential application for LDH stabilizer and phosphate (P) removal from aqueous solution was evaluated using the batch mode and continuous mode in a packed bed column. The batch experiments revealed that the data of P adsorption onto LDH-AP could be well ...
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The impact of farming on river banks on water quality of the rivers
Abstract A study was carried out in a strip of a river in the dry and rainy seasons to assess the effect of farming along river banks on the quality of water in rivers. The results showed that there was an increase in the concentration of nitrate in the water downstream in both the rainy and dry seasons. In both rainy and dry seasons, the total nitrogen in the soil was highest (p<0.01) in ...
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Development of exobiopolymer-based biosensor for detection of phosphate in water
The present study was conducted to develop a biosensor by exploiting phosphate-binding capacity of exobiopolymer (EBP) produced by Acinetobacter sp. An environmental isolate of EBP-producing Acinetobacter sp. was subjected to transposon (Tn5) mutagenesis to overproduce EBP and afford improved phosphate selectivity. A mutant producing the highest amount of EBP with high phosphate-binding ...
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Adsorption of phosphate ions from aqueous solutions by a CeO2 functionalized Fe3O4@SiO2 core-shell magnetic nanomaterial
Phosphate is generally considered to be one of the nutrients for plants which may cause eutrophication of the aquatic environment. In this study, a CeO2-functionalized Fe3O4@SiO2 core-shell magnetic nanomaterial (denoted as Fe3O4@SiO2-CeO2) was prepared and used as the adsorbent to remove phosphate from water. The adsorbents were characterized by X-ray diffraction, transmission electron ...
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Project Circular Buiksloterham, Amsterdam - Case Study
In the Buiksloterham district of Amsterdam, located on the northern bank of the river IJ, 550 houses will be connected to a floating wastewater treatment plant. The “Circular Buiksloterham” project will be completed in mid-2019. The houses will be equipped with vacuum toilets which will reduce drinking water consumption. These toilets will only use 1 litre of water per flush. The ...
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Phosphate in Groundwater and Surface Water. A Rapid and Reliable Determination Method using the Photometric Spectroquant® Test
originally published in Supelco®'s Analytix Reporter Journal Issue 2 2018 by Merck KGaA, Darmstadt, Germany Visit SigmaAldrich.com/ar-reg Phosphorus is an essential element for organisms and plants.1 In natural, uncontaminated waters, it occurs as organically bound phosphate, condensed phosphates or as orthophosphate - often referred to by its chemical formula PO4-P. The small quantity of ...
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Action of cations on the leachability of bio-stimulants in a soil column at soil-water interface and its impact on surface water quality
Excess of nutrients such as P and N causes eutrophication on the shores of lakes and ponds. Simulated soil column study showed that the physico-chemical properties of soil affects the movement of anions such as PO43- and NO31- by the soil pore water thereby affecting the leachability at soil water interface. In the present study, sodium adsorption ratio (SAR) was used as a measure contributing in ...
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Boiler Film Forming Amines Hydrocarbon Engineering
A good treatment programme for boiler feed water is crucial to the smooth operation of steam generators. Faulty treatment can cause damage to the plant, with attendant high costs. Traditional treatment programmes have three components: oxygen scavengers, alkalising amines, and phosphate. In a treatment programme based on film forming amines (FFAs), the functions of both oxygen scavenger and ...
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Biogeochemical function of phosphorus–solubilising bacteria on cycling of phosphorus at the water–sediment interface under laboratorial simulated conditions
With an efficient phosphorus–solubilising bacterium (PSB) Paenibacillus sp. isolated from sediment of a eutrophic water reservoir, the biogeochemical function of bacteria on the P–cycling at water–sediment interface was studied using simulated columns at laboratorial scale. Results showed that, when PSB formed biofilm at water–sediment interface, the P content showed a largest reduction of 56 ...
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Prediction of dissolved oxygen in reservoirs using adaptive network-based fuzzy inference system
Predicting water quality is the key factor in the water quality management of reservoirs. Since a large number of factors affect the water quality, traditional data processing methods are no longer good enough for solving the problem. The dissolved oxygen (DO) level is a measure of the health of the aquatic system and its prediction is very important. DO dynamics are highly nonlinear and ...
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A molecular imprinted polymer based sensor for measuring phosphate in wastewater samples
Phosphate detection in water samples is still completed using colorimetric standard methods, which have a number of disadvantages, to such as being time consuming, requiring filtration, a number of different reagents, frequent calibration and proper disposal of waste chemicals generated. Hence, a simple cost effective analytical method and instrumentation is highly desirable to aid the ...
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Innovations in the inhibition and cleaning of reverse osmosis mebrane scaling and fouling - Case Study
Abstract: Scaling and fouling of membranes are an on-going performance issue for most plants This presentation outlines innovations in speciality chemicals designed to inhibit membrane scaling and fouling and to clean membranes where deposition has occurred. High phosphate waste water reuse RO plant – There is an increasing trend to treat recycled waste water and use it as a feed supply ...
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Low cost processes for the removal of phosphates in water and wastewater
This paper presents a synopsis of various low-cost techniques employed for the removal of phosphates from water and treated wastewater. Techniques employed include seawater flocculation and coagulation/flocculation using bittern, adsorption on fluidised raw dolomite bed, and filtration through iron and aluminium coated filter media. Seawater flocculation at a seawater concentration of 10% ...
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Dissolved Air Flotation
Dissolved air flotation (DAF), which is mainly used in wastewater treatment system, is a reliable and proven process for purification. DAF is used for the easy separation of suspended matters in liquids. The DAF system works by saturating the process water with air under high pressure which is then released to normal pressure and piped into the wastewater tank. The micro bubbles generated during ...
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Dual layer hollow fiber PVDF ultra-filtration membranes containing Ag nano-particle loaded zeolite with longer term anti-bacterial capacity in salt water
Dual layer polyvinylidene fluoride (PVDF), antibacterial, hollow fiber, ultra-filtration composite membranes with antibacterial particles (silver (Ag) nano-particles loaded zeolite (Z-Ag)) in the outer layer were prepared with high water flux and desired pore sizes. The amounts of Ag+ released from the composite membranes, freshly made and stored in water and salt solution, were measured. The ...
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Innovations in the inhibition of reverse osmosis membrane scaling and fouling
Abstract: Scaling and fouling of membranes is an on-going performance issue for most plants. There are continual improvements in membrane technology and plant design which increase efficiency, water quality and utilise different raw water supplies to produce clean pure water. This presentation outlines innovations in laboratory services and speciality chemicals designed to inhibit membrane ...
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Fiction EHC fluid resistivity
Since the mid 1960's turbine hydraulic fluid systems have been using Fire Resistant Fluid (FRF) to control their turbine inlet valves. It is a known “FACT” that low fluid resistivity adversely affects the internal components of servo valves within the hydraulic fluid system. Root cause analysis studies conducted by numerous agencies have determined that acids, conductive water and ...
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FPI Adopts LC-ICP/MS to Analyze Inorganic Arsenic in Pet Feeds for Safety Monitoring
Consumer demand in the pet industry continues to increase as demographics change, spending power improves, life attitudes change and the number of pets continues to grow. according to Frost & Sullivan, the number of pets in China has grown from 190 million in 2014 to 302 million in 2019 and is expected to grow further to 446 million by 2024. The global pet food market size has been on a ...
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Hydroflo diaphragm pumps help reduce boiler corrosion and maintenance costs
ABTCo, located in Alpena, Michigan, is a decorative wood paneling producer using three boilers to generate 7 MW of electricity – half the power needed in the plant plus steam for pulp processing. As in many boiler operations, the main enemy is corrosion, which can destroy system components and lead to boiler failure. Although internal boiler surfaces are protected by a film of magnetic ...
By Aquflow
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