The filtration experiments were conducted using a cross-flow laboratory-scale membrane test unit (CEPA CFII, GE Osmonics, USA) which consisted of a feed tank (5 L), high-pressure pump (D03 Hydracell, Wanner Engineering, USA), pressure gauge and membrane filtration cell (as shown in Fig. 1).Flat membrane coupons (14.6 × 9.5 cm) …
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Herzog et al. [6] compared mechanical machining, ... To simulate the material removal process, this paper adopts the "birth-death element" technique, where elements whose temperature exceeds the set temperature are not updated in the following calculation. The smallest size of the removed material which is also the prediction …
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Sulfur removal stands as a critical process across industries, ensuring regulatory compliance, product quality enhancement, and operational efficiency. This page delves …
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This communication is about the removal of arsenic (As), fluoride (F −) and hydrated silica (HS) from real underground water (initial concentration: 28 µg L − 1 arsenic, 1.55 mg L − 1 F −, 155 mg L − 1 HS, 35 mg L − 1 sulfate, pH 7.4, and 470 µS cm −1 conductivity) by electrocoagulation (EC).The novel EC reactor consists of eight …
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Various key process parameters are employed to analyses the efficiency of ferrous and aluminum hydroxides on removal of colour is observed as 99.10%, chemical oxygen demand (COD) of dye solution ...
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The sulfate removal from acid mine drainage (AMD) water (initial concentration: 5301 mg/L) was investigated by precipitation and/or adsorption using calcium hydroxide (Ca(OH)2) and synthetic ...
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Moderate pre-ozonation coupled with a post-peroxone process remove filamentous cyanobacteria and 2-MIB efficiently: From bench to pilot-scale study. Author links open overlay panel Hangzhou Xu a c, Jing Zhang a, ... 2011, Zamyadi et al., 2015a), whilst removal of 2-MIB within intact cells as an intracellular compound was very …
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An Al recovery process was developed for sulfate removal by ettringite precipitation. • Al recovery above 98.4% was obtained at pH 3.0, suspended solid of 9.8 g/L and 303 K. • Ettringite (Ett) dissolution was divided into two stages with gypsum precipitation. • Pilot-scale test showed 66.0% sludge reduction and 35.1% cost saving by …
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Furthermore, the HCO 3 − removal beside NO 3 − appearance in the effluent of a circulating flow complete anaerobic bioreactor was a sign of the interaction between N–C during SRAO process (Zhang et al., 2020). Although NH 4 high removal rate confirmed SRAO process as a complex reaction including sulfur-utilizing denitrification ...
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Adsorption technology is an adequate process for the removal and uptake of environmental pollutants by taking advantage of the high adsorption capacities of the adsorbents to remove specific pollutants (El-Hankari et al., 2016a, Li et al., 2021, Liang et al., 2021, Liu et al., 2021, Yu et al., 2021b, Zhang et al., 2021), through physical or ...
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The above-mentioned scarcity of work related to the in-depth study of the material removal modes of green ceramics motivates the current work. Scratch tests and edge-indentation tests will be carried out to study the processing behavior and material removal modes of green Al 2 O 3 ceramics fabricated by cold isostatic pressing. The …
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3. Results and discussion. As shown in Fig. 1, Al–Si ingot (Fig. 1 a) can be obtained after the Al–Si alloying process and a lot of hexagonal crystals with yellow-gold color 1 were observed on the top surface of it (Fig. 1 b). The SEM images of the top sample surface indicate that the diameter of hexagonal crystallizes was in the range of 0.1–2 …
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Recently, the applications of sulfur removal technologies from fuel oil have been demonstrated as the center point of focus for oil refining industries [8].The …
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Schulz et al. [20] pilot tested an electrocoagulation method for removal of scale forming specie in industrial process water. Omar et al. [21] found that fluidized bed crystallization technology was a feasible method for …
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The objective of this study was to investigate a simple and less expensive process for the removal of sulfate from Iranian Chemical Industries Investment Company' wastewater using the ettringite (a calcium aluminum sulfate (Ca6Al2(SO4)3(OH)12.26H2O)) precipitation process. The optimum experimental conditions for sulfate removal and …
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Contribute to jgw2023/sbm development by creating an account on GitHub.
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One of the common sulfate removal methods from industrial effluents, especially mine waters with high sulfate concentration, is the Cost-Effective Sulfate Removal (CESR) process (Reinsel, 1999 ...
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The result has found that it was significant to achieve the removal of Al 3+ and Mg 2+ cations while removing F. This is because the removal of Al 3+ and Mg 2+ cations can increase the subsequent concentration efficiency and mitigate the degradation of the water-soluble phosphorus, thus facilitating the production of high-quality …
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An effective method for recycling REES and Al from ion-absorption rare-earth ore in order to obtain ore leaching solutions was also reported. Zeng et al. (2012) and Han et al. (2013) proposed a method which had adopted a saponifying naphthenic acid extraction system for aluminum removal. It was found that the system had the ability to …
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Removal of sulfate and calcium can be done by GYP-CIX process using the ion exchange resins (Gussman and Nagy, 1993, Robertson et al., 1993). Tailing water containing 1200 mg/L sulfate and 500 mg/L calcium has been treated by GYP-CIX process in a pilot plant at Berkeley Pit, Butte, Montana.
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The sulfate removal from acid mine drainage (AMD) water (initial concentration: 5301 mg/L) was investigated by precipitation and/or adsorption using calcium hydroxide (Ca(OH)2) and synthetic layered double hydroxide (LDH) of the Mg/Al type. The exclusive use of LDH efficiently removed sulfates (64.2% reduction); however, alteration …
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1. Introduction. Various pollutants such as particulate matters, SO 2 and NO x generate in the coal combustion process. Since the particulate matters, especially those with an aerodynamic diameter less than 2.5 μm, can cause various environmental problems, fine particles (PM 2.5) emitted from coal combustion is an important …
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The titanium catalyst promotes organic sulfur hydrolysis to CO 2 and H 2 S. The recovery of sulfur in a two- or three-stage conventional Claus plant is …
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The ranges of tested parameters for the coagulation process were: coagulant dose (33–166 mg L −1 of Al 3+), contamination of the wastewater (COD between 1060 and 3050 mg O 2 L −1), mixing time (5–30 min), stirring speed (60–300 rpm) and pH (4–11). The resulting removal capacities were in the ranges of 20–55% for COD, 28–89% for ...
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The removal volume-related scratch energy e r calculated from the ratio of the tangential scratch force F St and the scratch cross-section describes the energetic effectiveness of the removal process [15]. Fig. 8 (a) shows the curves of the cumulative probability of e r for scratch depths between 10 and 50 μm. Download: Download high-res image ...
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Another important contribution to the field was made by Griffiths [84], who provided in a monograph, a comprehensive review and analysis of surface integrity parameters and their control for enhanced functional performance of components.Two recent reviews by Withers [239] and Withers et al. [240] cover recent advances in …
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Representative process flow sketch for removal of H 2 S and CO 2 by alkanolamine adsorption. Full size image. In the trayed regenerator column, a steam-heated reboiler …
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How Topsoe sulfur recovery works. By choosing Topsoe's sulfur recovery solutions, you can convert sulfur containing streams such as acid gas, sour water stripping (SWS) gas and …
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