Waste sludge derived adsorbents for arsenate removal from water

Kumar, Rahul; Kang, Chan Ung; Mohan, Dinesh; Khan, Moonis Ali; Lee, Joon Hak; Lee, Sean Seungwon; Jeon, Byong‐Hun

doi:10.1016/j.chemosphere.2019.124832

Cited by 37 publications

(16 citation statements)

References 46 publications

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“…The disposal cost in Netherlands stands at a huge sum of US dollar 37-50 million per year while it is US dollar 6.2 million per year in Australia. It is also estimated that the cost of AlS disposal in Ireland will be doubled by the end of the next decade from the present assessment of 15,000-18,000 tons/year of the dried solids, with disposal costs estimated at EUR 2.1 million (US dollar 2.8 million) per year [14][15][16][17][18].…”

Section: Production and Characteristicsmentioning

confidence: 96%

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Zhao

Xie

et al. 2021

Processes

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Alum sludge (AlS) refers to the inevitable by-product generated during the drinking water purification process, where Al-salt is used as a coagulant in the water industry. It has long been treated as “waste”, while landfill is its major final disposal destination. In fact, AlS is an underutilized material with huge potential for beneficial reuse as a raw material in various wastewater treatment processes. In the last two decades, intensive studies have been conducted worldwide to explore the “science” and practical application of AlS. This paper focuses on the recent developments in the use of AlS that show its strong potential for reuse in wastewater treatment processes. In particular, the review covers the key “science” of the nature and mechanisms of AlS, revealing why AlS has the potential to be a value-added material. In addition, the future focus of research towards the widespread application of AlS as a raw material/product in commercial markets is suggested, which expands the scope for AlS research and development.

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Section: Production and Characteristicsmentioning

confidence: 96%

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Zhao

Xie

et al. 2021

Processes

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“…The sludge disposal cost in Netherlands stands at a huge sum of US$37-50 million per year while it is $6.2 million per year in Australia. It is also estimated that the cost of WTS disposal in Ireland will be doubled by the end of the next decade from the present assessment of 15,000-18,000 tons/ year of the dried solids [7][8][9][10].…”

Section: Production and Characteristics Of Waterwork Sludgementioning

confidence: 98%

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

Zhao

Nzihou

Ren

et al. 2020

Waste Biomass Valor

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Waterworks sludge refers to the inevitable suspended and dissolved solids produced during the water purification process when producing tap water where Al-salt and/or Fe-salt are used as coagulant worldwide. Waterworks sludge is dewatered and the resultant cakes have been treated as "waste" for landfill as their major final disposal solution for a long time in practice. As waterworks sludge is the residual of potable water treatment process, it is not harmful and without toxic elements such as heavy metals in most cases in comparison to sewage sludges for instance. Actually, waterworks sludge is an underrated material with huge potential for beneficial reuse as raw material in water and environmental engineering. However, little was significantly progressed on this topic until the last two decades. Research and development (R&D) with special interest and focus on waterworks sludge reuse was conducted in our group in the last 15 years and this paper reports and discusses the main work and its novel application profile. Overall, it is believed that the R&D of waterworks sludge is useful and will help to develop national strategy of the entire waterworks sludge management, allowing its transformation from a "waste" into value-added products, and thus contribute to sustainable development.

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“…Lee et al (2015) reported that bead type adsorbents that employed AMDS with alginate had a q m for As(V) of 21.8 mg/g [18]. The AMDS coated with polyurethane have shown a q m of 7.3 mg/g [15]. MIRESORB TM is an adsorbent prepared by using byproducts from coal mines.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Among the many techniques currently available for removing arsenic from water, adsorption is considered to be one of the most promising because of the low cost, high efficiency, and ease of operation [13,14]. Many studies have exploited zeolite, chitosan, granular ferric hydroxide (GFH), and other materials as adsorbents to remove arsenic [15,16]. Iron-based adsorbents have attracted much interest due to their high efficiency in arsenic remediation, environmental friendliness, and abundance on earth [11].…”

Section: Introductionmentioning

confidence: 99%

“…Large quantities of sludge are generated during AMD treatment processes, and this waste material consists of amorphous micron-and submicron-sized metal oxide/hydroxide particles with high specific surface areas [18,19]. The most abundant elements in AMD sludge are Fe and Al, which are known to effectively remove arsenic [15,20]. Thus, we anticipate that sludge would have high potential for arsenic adsorption.…”

Section: Introductionmentioning

confidence: 99%

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Arsenic (V) Removal by an Adsorbent Material Derived from Acid Mine Drainage Sludge

et al. 2020

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Arsenic is a toxic element that is often found in drinking water in developing countries in Asia, while arsenic poisoning is a serious worldwide human health concern. The objective of this work is to remove arsenic (V) (As(V)) from water by using an adsorbent material prepared from mine waste, called MIRESORBTM, which contains Fe, Al. The performance of the MIRESORBTM adsorbent was compared with granular ferric hydroxide (GFH), which is a commercial adsorbent. Adsorbents were characterized by using scanning electron microscopy (SEM), X-ray fluorescence spectroscopy (XRF), X-ray diffractometry (XRD), and N2 sorption with Brunauer–Emmett–Teller (BET) analysis. The kinetics, isotherms, and pH-dependency of arsenic adsorption were interrogated to gain insights into arsenic adsorption processes. The maximum adsorption capacity of MIRESORBTM was 50.38 mg/g, which was higher than that of GFH (29.07 mg/g). Moreover, a continuous column test that used environmental samples of acid mine drainage was conducted to evaluate the MIRESORBTM material for practical applications. The column could be operated for more than 5840 bed volumes without a breakthrough. Successful operation of a pilot plant using MIRESORBTM adsorbent was also reported. Thus, these studies demonstrate MIRESORBTM as a highly efficient and economical adsorbent derived from recycled mine sludge waste.

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Waste sludge derived adsorbents for arsenate removal from water

Cited by 37 publications

References 46 publications

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

Arsenic (V) Removal by an Adsorbent Material Derived from Acid Mine Drainage Sludge

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