Statistical optimization for cadmium removal …
Statistical optimization for cadmium removal using Ulva fasciata biomass: Characterization, immobilization and application for almost-complete cadmium removal …
Statistical optimization for cadmium removal using
The results indicated that 4 g of dry Ulva fasciata biomass was found to successfully remove 99.96% of cadmium from aqueous …
Removal of arsenic and cadmium with sequential soil
The studied soil was collected from the surface layer (0–20 cm) of a village close to a mining area southwest of Jiangxi, China. The collected soil was air-dried and ground before sieving to remove >2 mm gravels and <0.075 mm fine particles (particle-size cut points based on the previous studies), and then homogenized and stored until …
High performance self-assembled sulfidized …
High performance self-assembled sulfidized nanoscale zero-valent iron for the immobilization of cadmium in contaminated sediments: Optimization, microbial …
Sustainable removal of cadmium from contaminated water …
Cadmium(II), along with its compounds, can be found in the industrial discharges related to pigments, mining, plastics, corrosion resistance steel, metal plating, phosphate fertilizer, alloy ...
Design method for cadmium and arsenic contamination
From the above description, two types of cadmium and arsenic contamination may be caused during the underground coal mining: 1) If the height of the mining fissure growth is larger than the mining depth (Fig. 1), mining fissures can develop to the ground.When the fissure growth results to a cut-through of surface water and goaf, …
Cadmium Poisoning: Causes, Effects, and Treatment
Symptoms of cadmium poisoning differ depending on whether you inhaled or ingested the metal. If you ingest contaminated food or water that contains cadmium, you may experience: Nausea and vomiting. Diarrhea. Abdominal pain and cramping. Tenesmus: A sensation that you need to have a bowel movement, but you don't actually need to …
A heuristic method for production scheduling of an open pit mining …
1. Introduction. The extraction of mineral resources in an open pit mine provides valuable (ore) and waste materials for the subsequent stages of the supply chain [Citation 1–3].Figure 1 presents the framework of a typical open pit mining operation. A mixed integer programming (MIP) based mathematical model defines the movement of …
Optimization of cadmium biosorption by Shewanella …
1. Introduction. Due to the adverse effects of heavy metals on plants, animals and humans, the remediation of soils contaminated heavy metal has received much attentions (Li et al., 2018).Cadmium (Cd 2+) is a transitional heavy metal that exists in the aquatic environment through geochemical processes and is increasingly exposed to the …
Sustainable removal of cadmium from contaminated …
This research study reported the feasibility of cadmium removal using green algae, Caulerpa scalpelliformis, under controlled environmental conditions. The algal …
Cadmium contamination in soils and crops in four mining
Cadmium can leak into the water and accumulate in sediments through human activities, such as mining or soil fertilization [14, 15]. It can also enter the human diet in different ways, including ...
Optimization of flocculation conditions for soluble cadmium …
The actual design run by the statistics software, Design-Expert 8.0.6, is presented in Table S1. The experimental sequence and the summarized results are presented in Table 1.The significant factors in the flocculating process were determined to be X 2 (P = 0.0025), X 3 (P = 0.0065), and X 1 (P = 0.0173), respectively (Table S2). …
Mining Optimization: What does it mean? | Modular Mining …
The word, "optimization," is somewhat ambiguous; the Oxford English Dictionary defines it as: the action of making the best or most effective use of a situation or resource. For us, that has historically meant dynamic, automated truck assignments based on real-time situational information. Leveraging our industry-first and still best-of ...
Statistical optimization for cadmium removal using
The highest percentage of cadmium removal was obtained in the run 5 with a value of 99.96%, where cadmium concentration is 200 mg/L, biomass is 4 g/L and pH is 5, while the minimum cadmium removal ...
Cadmium Elimination via Magnetic Biochar Derived from …
Designing an efficient and recyclable adsorbent for cadmium pollution control is an urgent necessity. In this paper, cow manure, an abundant agricultural/animal husbandry byproduct, was employed as the raw material for the synthesis of magnetic cow manure biochar. The optimal preparation conditions were found using the response …
Cadmium, lead, and arsenic contamination in paddy soils of a mining
1. Introduction. Soil and crop pollution as a result of mining activities is now an important issue around the world (Candeias et al., 2014).Pollution is predominantly from mining activities in paddy fields of China, whilst the soils in the south are more polluted than north China (Zhao et al., 2015).High concentrations of heavy metals (As, Cu, Zn, Cd, Pb …
Process Optimization of High-Efficiency Leaching of …
Through three experiments, the average value of the cadmium leaching rate is 98.18%, and the deviation from the predicted value is 1.02, Higher is the …
Removal of cadmium from aqueous solution using
Results showed that the sonochemical modification process could reduce particle size, enhance effective cation exchange capacity from 0.10 to 1.58 meq/g, and …
Cadmium, Cu, Hg, Sb, Se and Ti contamination in …
The areas of the active and abandoned mine fields were 2103.63 m 2 and 10,425 m 2, respectively.The extent of current environmental degradation in the area caused by gold mining activities, the demographic and socio-economic characteristics of the people are recently published in Mensah and Tuokuu (2023).We produced thematic …
Preparation and optimization of diatom-based cadmium ion-imprinted
1. Introduction. Cadmium accumulation and persistence in nature leads to heavy metal pollution. On one hand, biodegradation of Cd 2+ is difficult, as only the chemical valence and compound species is changed under the action of microorganisms [1], which may even transform it into a more toxic compound [2].On the other hand, Cd …
Folic acid supplementation improves seed germination, …
Cadmium (Cd) contamination poses a significant threat to global agricultural production and hyperaccumulating plant species, such as Solanum nigrum (L.), face challenges in phytoremediation due to limited biomass production. Application of plant growth regulators such as, folic acid (FA) is a promising strategy to increase biomass production in these …
Statistical optimization for cadmium removal using Ulva …
maximum cadmium removal. ˚e relationship between cadmium removal percentage and the independent vari- ables is determined by multiple-regression statistical analysis and the analysis of variance ...
RSM optimization studies for cadmium ions adsorption
Water pollution caused by toxic heavy metal discharge from process industries and mining sites is a major concern [3]. Despite being an essential micronutrient, excessive heavy metal intake can have a variety of toxic effects [4]. Cadmium is one of the toxic heavy metals and longstanding environmental contaminants [5].
Optimization of Cadmium (Cd(2+)) Removal from Aqueous …
The interaction effects of (pH BD) and (X pH) were found to have significant influence on Cd²⁺ removal efficiency. The highest Cd²⁺ removal percentage attained by 79.60% at X = 10 ppm, pH ...
Bioaccessibility of arsenic, lead, and cadmium in contaminated mining …
Herein, we examined the feasibility of deriving the SEC by using the bioaccessibility of pollutants. In this regard, soil samples from 33 locations at 12 mining/smelting sites in China were collected and examined in terms of soil properties, chemical fraction distributions, and bioaccessibilities of cadmium (Cd), lead (Pb), and …
Simultaneous removal of lead, chromium and cadmium …
Lead, cadmium and chromium are simultaneously present in electroplating wastewater in the concentration of 18 mg/l, 17 mg/l and 451 mg/l, respectively [9]. In the experiment, 1.4 l of solution is made of fix concentration of 18 mg/l of lead, 451 mg/l of chromium, and 17 mg/l of cadmium was treated under different experimental conditions …
Cadmium Mining | Processing Equipment | Flow Chart
Cadmium is used to make low-temperature melting alloys, such as solder and Wood's Metal for indoor sprinkler systems. The latter is an alloy of 50%Bi, 25%Pb, 12.5% Sn, and 12.5%Cd which melts at about 160 degrees Fahrenheit, the temperature of a very hot shower. Cadmium compounds are used both in black and white and color television tubes.
Development and optimization of analytical method for
A cadmium hollow cathode lamp was run under the conditions suggested by the manufacturer applying a current of 10.0 mA. The most sensitive wavelength for cadmium is 228.8 nm; the suggested value for the bandwidth of the slit is 0.5 nm. 2.2. Reagents and solutions. All chemical reagents used in the experiment were of analytical …
Cadmium Toxicity: Where is Cadmium Found?
Cadmium, a rare but widely dispersed element, is found naturally in the environment. Most cadmium ore (greenockite): occurs in association with zinc. It is released into the environment through mining and smelting, its use in various industrial processes, and enters the food chain from uptake by plants from contaminated soil or water.
Optimization of copper, lead and cadmium biosorption …
Mining activity causes soil and water contamination with heavy metals. • The biosorption process is an ecological technique for an effective removal of metals. • Biosorption optimization studies can be made with the use of the Box-Behnken design. • There is a need to find bacteria effective in various heavy metal decontamination. •
