Algal Bioremediation of heavy metals: An insight into removal
Henriques et al stated that salinity have no effect on the removal efficiency of arsenic in the case of living seaweed. They worked on Ulva lactuca and reported the 48% of abatement capacity within 72 h [46]. Table 1 summarizes the recent studies of remediation of arsenic by different algal strains along with other removal parameters. 4.3. ChromiumWeb
Comparative Study of Arsenic Removal Using Different …
This study has been conducted to examine the efficiency of those coagulants in the removal of arsenic. From the above study, it may be concluded that by using of oxidizing agent As (III) can be removed by converting to As (V) from the water and the efficiency of arsenic removal is depended on this oxidizing agent and its doses.Web
Occurrence and methods to remove arsenic and fluoride contamination in
For effective arsenic removal, the coexisting arsenic(III) is commonly converted to arsenic(V) before removal. Research studies show more efficient removal of arsenic(III) with higher initial concentrations; however, no significant removal efficiency was observed for initial arsenic(III) concentrations in range of 10–100 μg −l.Web
Selective removal of arsenic in water: A critical review
Selective removal of arsenic (As) is the key challenge for any of As removal mechanisms as this not only increases the efficiency of removal of the main As species …Web
Synchronous Removal of Arsenic and Fluoride from Aqueous …
The results of this study indicated that ZrVBZ could be used as an effective adsorbent for the simultaneous removal of F ... (III), respectively. In contrast to these results, arsenic removal was found for both forms of arsenic up to 500 μg L –1, which was further decreased to 87.5 and 81.2% As(V) and As(III), respectively, ...Web
Arsenic removal technologies and future trends: A mini review
7 rowsA concise review of arsenic removal technologies. • Arsenic toxicity, occurrence and health ...Web
Nanofiltration for Arsenic Removal: Challenges, Recent …
Arsenic (As) removal is of major significance because inorganic arsenic is highly toxic to all life forms, is a confirmed carcinogen, and is of significant environmental concern. ... Many studies have demonstrated that arsenic can be excluded even at a very high concentration of oxyanion of arsenic using a membrane without increasing the ...Web
Scientists Find New Way of Cooking Rice That Removes Arsenic …
A study from the Institute for Sustainable Food has found a new cooking method, the 'parboiling with absorption method' (PBA), that can reduce arsenic levels in rice by over 50% in brown rice and 74% in white rice without losing micronutrients. University of Sheffield study shows cooking rice in a certain way removes more than half of the ...Web
Remediation of Arsenic from Water Using Iron and Aluminum
The removal of arsenic by using aluminum and iron electrodes in the electrocoagulation process was investigated and compared. The Box–Behnken design was used to optimize operating parameters in electrocoagulation, namely current density, initial pH, treatment time, and initial concentration of arsenic. The correlation coefficients (R2) …Web
A low-cost solution to remove arsenic from drinking …
The study, "Enhanced arsenic removal from water by mass re-equilibrium: kinetics and performance evaluation in a binary-adsorbent system," was published in Water Research.Web
Technologies for Arsenic Removal from Water: Current Status …
This review paper presents an overview of the available technologies used nowadays for the removal of arsenic species from water. Conventionally applied …Web
Introductory Chapter: Arsenic | IntechOpen
The conventional methods most applied for arsenic removal are: Coagulation and flocculation (the most commonly employed), ... That is why detailed studies on arsenic toxicity and cancer provoking mechanisms were realized. The toxicity of the arsenic species may differ 10 and more times from one to another, so their transformation caused by ...Web
Minerals | Free Full-Text | Arsenic Remediation through …
Arsenic contamination of the environment is a serious problem threatening the health of millions of people exposed to arsenic (As) via drinking water and crops grown in contaminated areas. The remediation of As-contaminated soil and water bodies needs to be sustainable, low-cost and feasible to apply in the most affected low-to-middle income …Web
Economic feasibility of arsenic removal using nanofiltration
It was found that many studies involving arsenic removal were conducted on the laboratory scale, and most of the studies were focussed on pentavalent arsenic where initial feed concentration was less than one mg/L. However, arsenic concentration in groundwater is much higher than 1 mg/L at many places in developing nations.Web
Arsenic removal strategy in the processing of an arsenopyritic
However, although gold extraction increases with the release of arsenic, this element severely contaminates the leaching solution. The aim of the present study was to implement an intermediate arsenic removal stage to minimize its release in the subsequent gold thiosulfate leaching solutions. Among the agents tested, oxalic acid and sodium.Web
A single-step water treatment for arsenic decontamination
Arsenic is a famously toxic element and long-term exposure to even trace amounts can lead to debilitating and potentially fatal diseases including skin cancer, lung cancer, keratosis, and ...Web
A systematic study of arsenic adsorption and removal from …
A systematic study of arsenic adsorption and removal from aqueous environments using novel graphene oxide functionalized UiO-66-NDC …Web
Chelation: Harnessing and Enhancing Heavy Metal …
Chelation is central to natural detoxification of heavy metals, via formation of complexes, particularly with glutathione and other small molecules, and their excretion [ 20 ]. This manuscript stems from a large scoping review regarding arsenic, cadmium, lead, and mercury, funded by the Canadian Institutes of Health Research.Web
A critical review on arsenic removal from water using iron-based
Abstract. Intensive research efforts have been pursued to remove arsenic (As) contamination from water with an intention to provide potable water to millions of people living in different countries. Recent studies have revealed that iron-based adsorbents, which are non-toxic, low cost, and easily accessible in large quantities, offer promising ...Web
IOP Conference Series: Earth and Environmental Science …
a lot of research on the arsenic removal effect and the mechanism of arsenic removal. On the basis of the two stage arsenic removal, a neutralization[3] precipitation calcium arsenic three stages lime iron salt method is proposed. After treatment, the arsenic content in the water was 0.28mg/L, which met the discharge standard.Web
A mini-review on arsenic remediation techniques from water and …
Arsenic removal strategies should also consider the environment's impact, scalability, regeneration and reusability, matrix compatibility and stability, treatment of high arsenic concentrations, monitoring and control, long-term performance and maintenance. ... The limits of current arsenic removal technology require further study and ...Web
Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil …
Arsenic is a highly toxic heavy metal. The accumulation of arsenic in soil causes serious environmental problems including damaging soil structure, poisoning crops and animals and killing native microbiota [1,2].For human beings, prolonged exposure to arsenic-contaminated environments may cause skin cancer or disrupt biological …Web
Removal of Arsenic by Phytoremediation-A Study of Two Plant …
Removal of arsenic by conventional method is very costly, this paper focuses the method of phytoremediation to remove arsenic from soil. ... The adsorption process was developed with batch studies ...Web
Arsenic removal technologies and future trends: A mini review
Arsenic removal technologies and future trends: A mini review Overview. Arsenic is the 20th highest natural metalloid found in the earth's crust (atomic …Web
Arsenic contaminated water remediation: A state-of-the-art review …
Various feedstock materials are applied in biochar synthesis to study their usefulness in arsenic removal, such as cotton wood, mulberry wood, coconut shell, corn stem, poplar wood, pinewood, pine bark, rice straw, perilla leaf, Japanese oak wood, oak bark, grape seeds, peanut shell, even sewage sludge materials (Sun et al., 2017; Alkurdi …Web
New Study Reveals Best Way of Cooking Rice To …
According to a 2014 consumer Reports study, those who had rice as part of their diet had 44% higher levels of arsenic in their urine than those who do not eat rice. Now, a new study released in ...Web
Frontiers | Arsenic pollution and arsenic-resistant …
Extensive arsenic contamination of groundwater, rivers, and agricultural farms has led to widespread arsenic poisoning and consequent problems associated with health and economy. In recent years, many …Web
Recent Advances in Arsenic Research: Significance of Differential
Two studies on arsenic-exposed population from Argentina found C234709T and G4920037A variants of CBS to be associated with urinary MMA% (19, 78). ... One of the ready solutions of arsenic removal is the reduction at source and providing an alternative source of drinking water.Web
Arsenic removal performance and mechanism from water on iron …
In this study, the influence of CO 3 2–, SO 4 2–, PO 4 3– and citrate, as a representative of natural organic acids, on the arsenic removal were investigated at pH …Web
Study on Pre-oxidation of a High-Arsenic and High-Sulfur …
For arsenic-containing refractory gold concentrate, gold recovery by leaching is extremely difficult due to the encapsulation of gold in arsenopyrite and pyrite. In this work, the pre-oxidation of a high-arsenic and high-sulfur refractory gold concentrate in the acidic potassium permanganate or hydrogen peroxide solutions has been investigated. The …Web
