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— Phosphogypsum is a significant industrial solid by-product generated during the wet process of phosphoric acid production, with approximately 5 tons of phosphogypsum produced for every 1 ton of …
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— Mineral processing tailings (e.g., powered rock dust and phosphogypsum-PG) control the budget of NPs on a global scale and thus affect physical and biogeochemical processes in terrestrial and marine environments (Dalmora et al., 2016; Lütke et al., 2020) and the atmosphere including the nucleation of clouds (Retallack, 2011, 2012; Marshall …
— The test samples used in this study were taken from phosphogypsum produced by a phosphorus chemical enterprise in the Deyang Region, Sichuan Province, China. The content of CaSO 4 ·2H 2 O in the phosphogypsum was 80.65%, and the whiteness was 27.68. The water content of the phosphogypsum was less than 5%, and …
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WASHINGTON (October 14, 2020) — Today, U.S. Environmental Protection Agency (EPA) Administrator Andrew Wheeler approved a request from The Fertilizer Institute (TFI) to allow phosphogypsum to be used in government road construction projects. "Allowing the reuse of phosphogypsum shows EPA's commitment to working with industry in a way that both …
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— Chapter 2, to profile the top manufacturers of Phosphogypsum, with price, sales, revenue and global market share of Phosphogypsum from 2018 to 2023. Chapter 3, the Phosphogypsum competitive situation, sales quantity, revenue and global market share of top manufacturers are analyzed emphatically by landscape contrast.
Environmental impact and management of phosphogypsum. Hanan Tayibi, ... Aurora López-Delgado, in Journal of Environmental Management, 2009. Phosphogypsum (PG) is a waste by-product from the processing of phosphate rock by the "wet acid method" of fertiliser production, which currently accounts for over 90% of phosphoric acid …
— As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological …
— Phosphogypsum is transported and dumped as an aqueous slurry in huge, aboveground stockpiles, without any prior treatment, known as stacks. These stacks are often vulnerable to weathering, and contaminant leaching can occur and cause serious environmental damage (see review in Tayibi et al., 2009).Moreover, contaminants in …
— "That leaves Oman as the single most important source of high grade natural gypsum for cement and gypsum board manufacturers across Asia and South/East Africa," he observed. Underscoring the …
— In this study, we investigated a coarse phosphogypsum containing 49.63% SO3, 41.41% CaO, 10.68%, 4.47% SiO2, 1.28% P2O5, 0.11% F, CaSO4·2H2O purity of 80.65%, and whiteness of 27.68. Phosphogypsum contains calcium sulfate dehydrate as the main mineral, with small amounts of brushite, quartz, muscovite, and zoisite. Harmful …
— Phosphogypsum is a waste from the phosphorus chemical industry which has certain environmental hazards. Using it as a substitute for building materials was thought to alleviate the problems of phosphogypsum pollution and natural mineral consumption. This study tried to develop an environmentally friendly phosphogypsum-based composite …
— Phosphogypsum (PG), the main industrial by-product of phosphate fertilizer industry, primarily consists of calcium sulfate dihydrate. However, it contains various impurities with variable quantities depending on the origin of the phosphate rock. These impurities can restrict the reuse of phosphogypsum as a secondary primary resource.
Get In Touch With Us. Oman Gulf Company S.A.O.C P.O. Box : 223, Pin code : 211 Salalah - Sultanate of Oman Tel: 23279720, 23279727 Fax : 23279796
— Sandy soil covers a significant portion of Egypt's total land area, representing a crucial agricultural resource for future food security and economic growth. This research adopts the hypothesis of maximizing the utilization of secondary products for soil improvement to reduce ecosystem pollution. The study focuses on assessing the …
— Phosphogypsum (PG) is a by-product generated from the phosphorus fertilizer industry (phosphoric acid production). PG is similar to natural gypsum, but there are some differences, of which it contains some impurities such as water-soluble phosphate (P 2 O 5), water-soluble fluoride (F −) and P 2 O 5 substituted in the gypsum crystal …
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— The comparison of the developed phosphogypsum processing method with well-known national and foreign analogues showed that its cost-efficiency is 2-3 times higher; the area necessary for the plant ...
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— Introduction. Phosphogypsum (FY) is a byproduct generated in the production of phosphoric acid by the wet process (the most common route for its production using sulfuric acid), and contains significant concentrations of impurities (heavy metals, Fluorine, P 2 O 5, low pH, etc.) and natural radionuclides from 238 U-series (Bolívar et …
— The need for rare earths elements (REEs) in high tech electrical and electronic based materials are vital. In the global economy, deposits of natural REEs are limited except for countries such as China, which has prompted current attempts to seek alternative resources of REEs. This increased the dependence on major secondary rare …
— Comprising a relatively large amount of industrial solid waste, the high-value utilization of phosphogypsum (PG) is closely related to the sustainable development of resource materials and the protection of the ecological environment. PG can improve some of the shortcomings of geopolymers, but there is a lack of systematic research on the …
— Phosphogypsum (PG) is a by-product produced during the wet process of phosphoric acid (H3PO4) production from natural phosphate rocks. Approximately 4–6 tons of PG is produced per ton of ...
