The pH was found to be the limiting factor during the adsorption process, and under the optimal conditions, namely, adsorbent dose of 400 mg/L, pH=3, and temperature of 298 K, 87.61% Cr (VI) would ...
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The objective of this study was to evaluate the effect of dietary addition of bentonite (BNT) clay as a toxin adsorbent for diazinon (DZ) in Nile tilapia.Fish were randomly divided into five groups; the first group (G 1) was fed on a basal diet and serve as a control group; the second group (G 2) was exposed to DZ at a dose of 0.39 mg/ L (1/ 20 of 96 h LC 50); the …
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Therefore, natural BNT can be recommended for application in marine aquaculture at a level of 3 g/L, to reduce ammonia and improve fish growth, health and immunity.
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When tilapias' stomach is empty, its pH values range from 5 to 7 and it becomes progressively more acid with food digestion, reaching pH 3 after 4 to 41 Aquaculture 490 (2018) 35–43 Y.E. Rodriguez et al. promoting the total utilization of P. muelleri …
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Next, after being exposed to Nile tilapia (O. niloticus) gastrointestinal pH conditions, the protease activity of alginate capsules without and with bentonite at pH 3 did not undergo denaturation ...
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The increase in the volume of the Stern layer, caused by increasing the degree of delamination, is also suggested to play a role. H + and Na + are concentrated in the Stern …
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Due to their cost-effectiveness, low toxicity, and naturally renewable properties, bio-coagulants for water treatment are gaining popularity. In this context, four bio-coagulants were tested for their ability in turbidity reduction in a synthetic bentonite suspension: Opuntia ficus indica (OFI) and Moringa oleifera (MO) seeds, two well-established vegetal materials in the …
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The predicted evolution in bentonite influenced either by OPC-type or low-pH cements is considered time and spatially-dependent. For the first case, the rate of alteration of primary minerals and formation of secondary minerals will be important and is estimated to happen in a short period of time (in the range 10–10 2 years), while for the second case the …
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Examination of Ammonium Removal Efficiency and pH Changes with Natural Adsorbents (Zeolite and Bentonite) for Water Quality Applying in Aquaculture ... pH, zeolite-bentonite, ammonia, adsorption, aquaculture Full Text: PDF. ... Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies ...
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The role of microorganisms in the bentonite barrier of high-level radioactive waste repositories Nicole Matschiavelli, Magdalena Dressler, Tom Neubert, Sindy Kluge, ... pH E h 0 70 140 210 280 0 3 6 9 12 30 60 90 120 time [d] lites [mM] Fe(II) Fe(III) SO 4 2-d = 238 d = 181 H 2 0 70 140 210 time [d] 0 3 6 9 12 30 60 90 120 s [mM]-500-250 0 250 500
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The optimal pH variation for cellulose was at pH 10, with an adsorption capacity of 10.75 mg/g, on the other hand, was tested at pH 6 and demonstrated an adsorption capacity of 12.74 mg/g.
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The pH of aqueous bentonite suspensions is known to be influenced by carbonates present even in minor amounts. On the other hand, at high solid:liquid ratios (at standard pH measurement conditions: 2% w/w suspension), the type of exchangeable cation in the smectite is also known to determine pH (particularly Na+ or Ca2+). By cation-exchange tests we proved …
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Vertical cutoff walls have been widely employed for groundwater control and in situ containment of subsurface pollutants. The traditional cutoff wall materials are usually highly susceptible to dry–wet cycles due to precipitation, drought, and groundwater fluctuation, leading to cracking or even disintegration. This study adopted sodium bentonite (NaB) to enhance the …
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Abdel Rahman El Gamal, Ph D October, 2013 . Planning of aquaculture projects Why this presentation? Demonstrating the role of planning in the success or failure of aquaculture projects Highlight the technical features of aquaculture projects ... Bentonite: (clay type product): Bentonite
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The role of calcium bentonite as a delivery carrier for an antihypertensive drug. Author links open overlay panel Leandro Severino ... amiloride hydrochloride ethanol/water solution of 8% v/v, whose pH was adjusted for 2.0, 4.0, 6.0, and 8.0. The pH was 4.0 immediately after dispersion of Ca 2+-Bent in the drug solution. For tests at pH 2 ...
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Bentonite can alleviates the pathological lesions induced by diazinon toxicity through decreases its accumulation in tissues. The objective of this study was to evaluate the …
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DOI: 10.1016/j.aquaculture.2020.736182 Corpus ID: 229490528; The potential role of the dietary addition of bentonite clay powder in mitigating diazinon-induced hepatorenal damage, oxidative stress, and pathological alterations in Nile tilapia
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Recent review articles about NH 4 + adsorption have emphasised the importance of operation parameters like adsorbent material dosage, pH, contact time and coexisting ions (Wang and Peng, 2010). Huang et al. (2018) compared a range of cost-effective adsorbent materials in context of cost, efficiency and preparation. However, very little attention has been …
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Bentonite, however, has been shown to aid in the restoration of biological functions in drought-affected soils. Bentonite's function as a soil moisture retainer is an important consideration. Bentonite acts as a reservoir, trapping water within its layers due to its high water-holding capacity and ability to form a gel-like structure.
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The role of the bentonite buffer in this concept is essential, and thus the behaviour of the bentonite has to be known. The experiments in this paper concentrated on providing information about the effects of carbon dioxide CO 2 (g) partial pressure on compacted sodium bentonite, giving an insight into the buffering capacity. ... The pH in the ...
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the role of polypropylene fibers in expansive soils, and [32] looked at how magnesium bentonite alkalizes at the microscopic level in alluvial sand. [33] evaluated the role of NaCl as a case study in
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Bentonite supplement is capable of combating the problem of mycotoxin in aquafeed production. Eastern Nigeria is home to the Igbo people and they have two major types of edible bentonite …
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The effect of different doses of zeolite (0, 0.5, 2, 4 and 8 g zeolite l-1) on reduction of copper toxicity in water and on freshwater fish, Oreochromis mossambicus was studied for 180 days.
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Clay minerals such as bentonite (BNT) have recently drawn attention as non-nutritive additives in aquaculture, which can maintain water quality and maximize productivity. …
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organisms, play a vital role i n aquaculture due to their rich c ontent of essential proteins, omega-3 fatty acids, valuable lipids, vitamins, minerals, and antioxidants
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Aquaculture species will usually die quickly if the pH is less than 4 or greater than 11 (Table 1). Most species can tolerate a pH between 6 and 9 fairly well, but they are usually stressed by pH outside this range resulting in less growth and greater susceptibility to disease. The optimum pH for most species is between 7 and 8.5.
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Bentonite clay has found application as a feed additive in animal science and aquaculture. It is used as a mycotoxin binder to improve feed utilisation. Application of dietary activated …
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The role of bentonite binders in single or concomitant mycotoxin contamination of chicken diets Br Poult Sci. 2016 Aug;57 ... Faculty of Animal Science and Aquaculture, Agricultural University of Athens, Athens, Greece. 2 b Department of Plant Pathology, Faculty of Crop Science, ...
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The role of bentonite clay and bentonite clay@MnFe2O4 composite and their physico-chemical properties on the removal of Cr(III) and Cr(VI) from aqueous media ... ions were evaluated as 151.5 mg/g (25oC, pH 6, 90 min, and 1 g/L) and 161.3 mg/g (25oC, pH 3, 90 min, and 1 g/L), respectively, while the BCMFC showed the maximum capacities of 175.4 ...
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