Development of novel inorganic adsorbent for water treatment

Jiang, Jia‐Qian; Ashekuzzaman, S.M.

doi:10.1016/j.coche.2012.03.008

Cited by 62 publications

(22 citation statements)

References 51 publications

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“…As the need for fresh sources of drinking water is becoming urgent worldwide, sustainability in the field of water separation processes and in general, its significance for the chemical and process industry has been noted. It was said that it is particularly interesting to develop an adsorbent demonstrating a high adsorption capacity and low cost for removing various pollutants from contaminated waters; inorganic chemical adsorbents have thus been studied widely, aiming at providing an alternative to activated carbon in the treatment of surface and ground water and industrial effluents [33].…”

Section: Introductionmentioning

confidence: 99%

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

et al. 2015

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This work is a systematic review of the literature over the past decade of the application of activated carbon (microporous or mesoporous) as adsorbents for the removal of heavy metals, focusing especially on lead (Pb) and arsenic (As) ions from the aqueous phase. Classical examples from our lab are also given. Activated carbon is known to provide a high surface area for adsorption. Generally, surface modification is typically required, such as oxidation, treatment with ammonia or even impregnation with ferric ion, etc. and the adsorbent material may originate from various sources. The pristine materials, after modification and those after batch-wise adsorption, were characterized by available techniques (BET analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, thermal analyses, X-ray photoelectron spectroscopy). Adsorption isotherms, thermodynamics and kinetics of the process are also discussed. Selected studies from the literature are examined in comparison with other adsorbents. The role of chemistry in the metals adsorption/removal was investigated.

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Section: Introductionmentioning

confidence: 99%

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

et al. 2015

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“…In recent years, layered double hydroxides (LDHs) or hydrotalcite-like compounds have been widely studied [92,93]. LDHs can be represented by a general formula M(II) 1 −x M(III) x (OH) 2 (An − ) x/n ·mH 2 O, in which both divalent [M(II)] (e.g., Mg 2+ , Ca 2+ ) and trivalent [M(III)] cations (e.g., Al 3+ , Fe 3+ ) give positively charged sheets.…”

Section: Discussionmentioning

confidence: 99%

Arsenic Contaminated Groundwater and Its Treatment Options in Bangladesh

Jiang

Ashekuzzaman

Jiang

et al. 2012

IJERPH

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100

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Arsenic (As) causes health concerns due to its significant toxicity and worldwide presence in drinking water and groundwater. The major sources of As pollution may be natural process such as dissolution of As-containing minerals and anthropogenic activities such as percolation of water from mines, etc. The maximum contaminant level for total As in potable water has been established as 10 µg/L. Among the countries facing As contamination problems, Bangladesh is the most affected. Up to 77 million people in Bangladesh have been exposed to toxic levels of arsenic from drinking water. Therefore, it has become an urgent need to provide As-free drinking water in rural households throughout Bangladesh. This paper provides a comprehensive overview on the recent data on arsenic contamination status, its sources and reasons of mobilization and the exposure pathways in Bangladesh. Very little literature has focused on the removal of As from groundwaters in developing countries and thus this paper aims to review the As removal technologies and be a useful resource for researchers or policy makers to help identify and investigate useful treatment options. While a number of technological developments in arsenic removal have taken place, we must consider variations in sources and quality characteristics of As polluted water and differences in the socio-economic and literacy conditions of people, and then aim at improving effectiveness in arsenic removal, reducing the cost of the system, making the technology user friendly, overcoming maintenance problems and resolving sludge management issues.

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“…By the addition of surfactants, the zeolite surface can be modified to enhance the anion exchange capacity and, to an extent, the potential to remove cations, anions, and organic compounds [70,[72][73][74][75]. Two control factors for surfactant sorption on zeolites are the initial concentration of the surfactant and the external cation exchange capacity (ECEC) of the zeolite.…”

Section: Zeolitesmentioning

confidence: 99%

Use of Surfactant-Modified Zeolites and Clays for the Removal of Heavy Metals from Water

Jiménez-Castañeda

Medina

2017

Water

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Abstract:The presence of heavy metals in water for human use or consumption represents a major risk to human health. It is therefore important to find materials to remove or minimise the concentration of these pollutants. The adsorption process for the removal of heavy metals is favoured by the use of low-cost materials that exhibit a porous structure and a high cation exchange capacity, such as zeolites and clays. On the other hand, chemical treatments, e.g., using acids and bases, can modify the properties of these materials, but more recently the application of surfactants has also shown to be successful for broadening their metal affinity and allowing the removal of diverse organic and inorganic pollutants from water. This paper reviews the application of modified zeolites and clays for the removal of heavy metals from water.

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Development of novel inorganic adsorbent for water treatment

Cited by 62 publications

References 51 publications

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

Arsenic Contaminated Groundwater and Its Treatment Options in Bangladesh

Use of Surfactant-Modified Zeolites and Clays for the Removal of Heavy Metals from Water

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