Interactions of acidic soil near copper mining and smelting complex and waste-derived alkaline additives

Abstract

Liming is a common practice in the treatment of acidic and metal contaminated soils, aiming at pH regulation, enhancing of the nutrient availability and attenuation of trace metals mobility. Replacement of natural limestone with alternative soil alkalizers found among waste materials represents a step towards sustainable resource management and reduced waste storage. In this study, waste seashells (SW) and red mud (RM) were applied in different doses to the soil sampled in the vicinity of mining and smelting complex. The soil was characterized by acidic reaction (pH 4.93), increased Cu concentration (219.2 mg/kg) and a very low level of P-supply (3.61 mg P 2 O 5 /100g). The study aimed to quantify and compare additive-induced effects onto soil physicochemical properties, the status of

Liming Effect of Mussel Shell (<em>Mytilus galloprovincialis</em>) Waste on High Acidic Soil

“…As for the elements of Available P and Exchangeable K the amended treatments with Fine powder grain size at all rates had positive effect in their concentration at the end of the experiment. Our results are in agreement with other comparable studies [27,34]. Soil pH is below 6.0, deficiencies of phosphorus (P) and potassium (K) can be caused due to their low bioavailability [35].…”

“…In contrast, Leiva-Vega et al [26], who carried out an experiment using as liming material the mussel seashell Mytilus chilensis, succeeded to raise soil pH close to 7.0 using 190 g kg -1 , amount 84% and 68% higher compared to our results. Various studies have mentioned the positive impacts of seashells in soil pH increase [27][28][29].…”

Accumulation of As, Ag, Cd, Cu, Pb, and Zn by Native Plants Growing in Soils Contaminated by Mining Environmental Liabilities in the Peruvian Andes

“…Three plants-Puya sp. (S1), Calamagrostis recta (S1), and Arenaria digyna (S1)-showed the highest concentrations (27,42, and 53 mg kg −1 , respectively). Several species, despite having a higher concentration of As in the roots, presented significant values in leaves, such as: Hypericum laricifolium (2.01 mg kg −1 -S1), Achyrocline alata (3.82 mg kg −1 -S1), Arenaria digyna (3.93 mg kg −1 -S1), Calamagrostis recta (3.99 mg kg −1 -S1), Puya sp.…”

“…The samples had fine granulometry due to the major presence of sandy fraction; the fine soil particles can be easily transported by wind and water erosion to the nearby environment [41]. The acidity of the soil and their unbalanced properties pointed to the poor soil management [42]. Santos-Francés et al [22] at Colquirrumi mine, located 6 km NW of our study area, reported acid soils (pH = 4.6), low organic matter content (5.04%), and silt sand texture (29.5% sand, 41.5 silt, and 30.8% clay); also, soils Colquirrumi are on quartzite and dacite substrates, which are much less reactive [39].…”

OPTIMIZATION OF NEUTRALIZING POWER OF Mytilus chilensis SEASHELLS IN ACID ALLUVIAL SOIL OF ÑUBLE COAST

“…Therefore, seashell waste should be efficiently reused to promote sustainable development and the circular economy in agriculture and the shellfish industry. It is well known that the main component of seashells is CaCO 3 , which can be a matter of interest in agriculture due to its low cost and availability (Egerić et al, 2019). However, as seashells remain in an ecosystem for a long time and have a low ability to metabolize pollutants https://doi.org/10.29393/CHJAA39-18ONJD30018 in water, they can be a potential source of heavy metals (Saleh et al, 2021).…”