Industrial Use of Trace Elements and their Impact on the Workplace and the Environment

Rusek, P.; Mikos-Szymańska, Marzena

doi:10.1002/9781119133780.ch24

Cited by 3 publications

(1 citation statement)

References 72 publications

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“…The reason why superphosphate and gypsum reduced the concentrations of heavy metals in the leachates is their stabilizing effects [30]. It is noteworthy that the commonly used industrial grade calcium superphosphate often contained arsenic [31], thus had a risk of increasing arsenic levels in the soil and leachate, although no significant differences were observed in this study. In general, the neutralization processes did not cause an increase in the metal contents of the leachate, and conversely demonstrated a positive effect on the stabilization of heavy metals.…”

Section: Heavy Metal Content In Soil and Leachatementioning

confidence: 57%

Neutralization of Industrial Alkali-Contaminated Soil by Different Agents: Effects and Environmental Impact

et al. 2022

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Industrial soil is susceptible to acid or alkali pollution, but studies focused on the remediation of such soil are still limited. This manuscript investigated the neutralization effect of five agents (hydrochloric acid, citric acid, ferrous sulfate, calcium superphosphate and raw gypsum) to alkali polluted soil. The results showed that regarding the initial pH after the neutralizing agent addition, it was better to set it lower than the target, as the pH would rebound. None of the five agents caused an obvious increase in the heavy metal contents of the leachates, but they all caused an increase in electrical conductivity, which indicated an increase in soil salinity. The leachates showed a luminous gain to Vibrio fischeri. However, remediation with hydrochloric acid would cause significant inhibition of germination and root elongation of pakchoi. In addition, the addition of neutralizing agents reshaped the soil microbial community structure in different patterns. Soils treated with hydrochloric acid and ferrous sulfate seemed to improve the microbial richness. The neutralization might be favorable for the biodegradation of polycyclic aromatic hydrocarbons (PAHs), which usually coexist in industrial contaminated soil. In general, the neutralization of alkaline industrial soils using ferrous sulfate, superphosphate and gypsum brought minimal environmental risk, among which ferrous sulfate was the first recommendation in industrial soil after a comprehensive comparison.

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Section: Heavy Metal Content In Soil and Leachatementioning

confidence: 57%

Neutralization of Industrial Alkali-Contaminated Soil by Different Agents: Effects and Environmental Impact

et al. 2022

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Synthèse bibliographique : étude des propriétés physico-chimiques du phosphogypse Marocain

Ennaciri

Bettach

Cherrat

et al. 2020

Matériaux & Techniques

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La production de l’acide phosphorique au monde engendre l’accumulation d’une grande quantité d’un sous-produit acide appelé phosphogypse (PG). La grande partie de ce PG est rejetée sans aucun traitement dans l’environnement, ce qui forme une source significative de contamination à longue durée. Le PG Marocain est principalement formé par le sulfate de calcium, à côté de diverses impuretés telles que les phosphates, les fluorures, les matières organiques, les métaux lourds et les éléments radioactifs. Cet article détaille en particulier les différentes propriétés physico-chimiques du PG Marocain. La compréhension de ces propriétés permet en générale d’identifier les différents agents de contamination de l’environnement contenus dans ce résidu. De plus, les facteurs affectant la présence des différentes sortes d’impuretés dans le PG sont aussi discutés.

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The chemical behavior of the different impurities present in Phosphogypsum: a review

Ennaciri,

Bettach

2023

Phosphorus, Sulfur, and Silicon and the Related Elements

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Industrial Use of Trace Elements and their Impact on the Workplace and the Environment

Cited by 3 publications

References 72 publications

Neutralization of Industrial Alkali-Contaminated Soil by Different Agents: Effects and Environmental Impact

Neutralization of Industrial Alkali-Contaminated Soil by Different Agents: Effects and Environmental Impact

Synthèse bibliographique : étude des propriétés physico-chimiques du phosphogypse Marocain

The chemical behavior of the different impurities present in Phosphogypsum: a review

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