Removal of arsenic and cadmium with sequential soil washing techniques using Na 2 EDTA, oxalic and phosphoric acid: Optimization conditions, removal effectiveness and ecological risks. Chemosphere, 156: 252–261. Article CAS Google Scholar Wen Y, Marshall W D (2011). Simultaneous mobilization of trace elements and …

This review is focused on the arsenic removal from water using pristine and modified biochar adsorbents. Recent advances in production methods of biochar adsorbents and mechanisms of arsenic removal from water are also illustrated. ... Removal of arsenic and fluoride from aqueous solution by biomass based activated biochar: optimization …

Arsenic removal experiments were performed by the batch equilibrium method at room temperature (25 ± 1 °C) with various initial arsenic concentrations and an adsorbent dose of 0.5 g/L ...

Parimal Pal, in Groundwater Arsenic Remediation, 2015. 4.6.5.4 Optimization of stabilization process. Response Surface Methodology (RSM) of Design Expert Software (Version 8.0.6) has been successfully used [14] in optimization of the parameters involved in the process of stabilization of arsenic in solid matrix through coagulation …

Arsenic is among the major drinking water contaminants affecting populations in many countries because it causes serious health problems on long-term exposure. Two low-cost micro-sized iron oxyhydroxide-based adsorbents (which are by-products of the industrial production process of granular adsorbents), namely, micro …

An assessment on removal performance of arsenic with treated Turbinaria vulgaris as an adsorbent: Characterization, optimization, isotherm, and kinetics study. Environ. Prog.

With this optimal arrangement, the NF system obtained fluoride and arsenic removal efficiencies of 70∼73% and 92∼94% respectively, a preferable permeate flux of 73.37 L h−1 m2 and acceptable ...

Optimization of arsenic removal from drinking water by electrocoagulation batch process using response surface methodology. ugur gebologlu. 2013, Desalination and Water Treatment. Arsenic in natural water source has been a serious concern worldwide. Arsenic concentration in soils and water have become elevated because of several reasons like ...

Selective arsenic extraction from enargite based complex concentrate from Copper Mine in Bor (Serbia), using sodium hypochlorite as a leaching agent, was investigated in this paper. The aim was to assess the optimal conditions for the most efficient arsenic removal from the investigated concentrate, based on factorial design applied to ...

In this current research, batch experiments were performed toward the characterization and optimization of arsenic removal by Turbinaria vulgaris.The four process parameters, that is, initial solution pH (3–5), initial arsenic ion concentration (20–100 mg/L), T. vulgaris dosage (0.10.5 g/L), and temperature (293–313 K), were …

Many techniques are used to remove toxic metals as arsenic from aqueous solutions, and common techniques are ion exchange [50], coagulation [23], membrane …

Arsenic removal increased around 23% for NF-1, 33% for NF-2, and 26% for NF-20 while the pH increased from 3 to 10 (Sen & Pal 2009). It was also observed by a group of researchers that an increase of pH and a decrease of operating temperature and arsenic feed concentration determined a higher efficiency of arsenic rejection, while the TMP ...

A simulation software (ARRPA) has been developed in Microsoft Visual Basic platform for optimization and control of a novel membrane-integrated arsenic separation plant in the backdrop of absence of such software. The user-friendly, menu-driven software is based on a dynamic linearized mathematical model, developed for the …

Groundwater is considered as the primary source of drinking water in many countries around the world. For maintaining resource sustainability, clean and safe groundwater is a priority for water authorities worldwide. Unfortunately, groundwater resources are susceptible to various types of pollution, with arsenic (As) being a major …

A critical review on arsenic removal from water using biochar-based sorbents: The significance of modification and redox reactions. ... mass, and temperature. Optimization of the experimental process was achieved using the Box-Behnken design, reaching optimum at conditions of 407 °C, 910-mesh, and 6.2 g. The principle analysis experiment ...

The adsorption process is one of the available methods to remove Arsenic from aqueous solutions. Thus, this papers aims at removing Arsenic (III) from aqueous …

Elevated arsenic (As) contamination in water, especially groundwater, has been recognized as a major problem of catastrophic proportions. This work explores As(V) removal via the coagulation ...

Optimization of (a) pH of the solution, (b) concentration of the analyte, (c) bio-adsorbent dosage, (d) contact time between the bio-adsorbent and the analyte, and (e) temperature of the solution. ... Banerji T, Chaudhari S. Arsenic removal from drinking water by electrocoagulation using iron electrodes—An understanding of the process parameters.

Removal of arsenic ions is usually performed by nanofiltration and reverse osmosis,10electrocoagulation,11chemical precipitation,12ion exchange,8,13−17and …

A lot of anthropogenic activities can discharge arsenic into the ecosystem such as industrial wastes, incineration of municipal, pesticide production and wood preserving. In addition, most arsenic soluble species can enter surface waters via runoff and leach into the groundwater. Around forty million people from all over the world are …

Arsenic contamination of drinking water is a global threat to human health. Therefore a variety of nanomaterials have been developed for arsenic removal. Compared to traditional materials, nanomaterials possess higher adsorption capacities for arsenic species. However, several technological barriers, such as nanoparticle recovery and …

Subsequently, the removal efficiency of arsenic remains comparatively stable in the late period. According to the above results, sulfuric acid plays a crucial role in the removal of arsenic. As given in Fig. 7 (d), arsenic removal efficiency raises from 18.20% to 98.21% with increase H 2 SO 4 addition from 0 to 0.3 mL/g.

Globally, both industrialized and developing nations struggle with the issue of water pollution due to heavy metals. Human life depends on water, and when it is contaminated with dangerous heavy metals like arsenic, people's health suffers. The interactive influence of three independent sorption processes variables such as bio …

Coagulation–flocculation is the most common method used to remove arsenic from drinking water. In the coagulation processes, chemicals are firstly added to destabilize and convert the dissolved arsenic compounds into insoluble precipitate, and then the solids can be removed through sedimentation and/or filtration …

Scientometric analysis. The scientometric analysis, a method applied to identify the research priority in any field of science, was applied to identify the research needs in As removal from aqueous solution ( Wu et al., 2020 ). Literature was searched using the keywords "Arsenic", "removal" and "water" in the Scopus.

An effecient Box-Behnken Design (BBD) approach was used to optimize the variables affecting the arsenic removal. The predicted maximum removal percentage was 97.3, yielded at pH, 4.0; adsorbent amount, 28.9 mg; removal time, 12.8 min and initial concentration, 65.6 μg L −1. The adsorption isotherms were studied by plotting Langmuir …

Electrocoagulation is a technology that offers several advantages over conventional treatments such as chemical coagulation. In the present work, an electrocoagulation …

This review presents the conventional As removal technologies as well as performances of various nanoparticles and nano based adsorbents for As removal from aqueous solutions. Arsenic removal using metal, metal …

Various types of arsenic removal adsorbents are introduced in detail. It provides a reference for both the utilization of iron-manganese sludge and the removal of arsenic from water. ... (W/O) microemulsion technique: Optimization and study of arsenic (V) removal. Journal of Water Process Engineering, Volume 32, 2019, Article 100920. …

The optimization process was carried out in two stages. At the initial stage, which can be taken as the coarse optimization, the full possible range was considered for each of the control factors that are important for the removal of arsenic. In this stage, the significance and contribution of the factors towards the optimization were identified.