Review on Different Beneficial Ways of Applying Alum Sludge in a Sustainable Disposal Manner

Odimegwu, Temple Chimuanya; Zakaria, Ideris; Abood, Manal Mohsen; Nketsiah, C. B. K.; Ahmad, Megat Mohamad Hamdan Megat

doi:10.28991/cej-03091153

Cited by 27 publications

(16 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The en hance ment of the com pres sive strength with the ad di tion of 1% biochar by weight of the ce ment was at trib uted to the biochar act ing as an ac cel er a tor for the hy dra tion re ac tion in the pres ence of the car bon diox ide cur ing [ 151 , 152 ]. The de crease in the com pres sive strength at higher dosage was at trib uted to the brit tle ness of the biochar which makes it easy for cracks to form within the com pos ites [ 153 ]. Gupta and Kua [ 128 ] rec om mended pre -soaking the biochar and moist cur ing of the cor re spond ing com pos ites in or der to achieve an en hanced com pres sive strength.…”

Section: Mechanical Properties 2 1 Compressive Strengthmentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

View full text Add to dashboard Cite

With in creas ing pop u la tion and ris ing de mands for im proved built en vi ron ment, there is an ex pected in crease in green house gas emis sion from the con struc tion in dus try. Car bon diox ide emis sion lev els are fast ap proaching a tip ping point which could lead to ir re versible cli mate change. The earth's ca pa bil ity to neu tralise the CO 2 emis sions through the nat ural car bon cy cle has been over stretched. There fore it is im per a tive to adopt technolo gies that are able to cap ture and se quester CO 2 in or der to can cel out their re lease from in dus trial ac tiv ities such as the con struc tion and build ing in dus try. This is im por tant so that ce ment-based ma te r ial pro ductions' car bon foot print can be re duced dras ti cally for a pos i tive change to take place in the cli mate. Biochar holds great promise as an ef fec tive CO 2 sorp tive ma te r ial in ce ment-based ap pli ca tions rel a tively sim i lar to its con ven tional use for soil amend ment. Ac tu ally, frag mented re searches on biochar as an ad mix ture in ce men titious ma te ri als have been con ducted. Based on this logic, this re view placed enor mous em pha sis on col lat ing in for ma tion from re cent stud ies on biochars from agro-sources used as an ad mix ture in ce ment-based ap pli cations. Sim i larly, the re view gave up-to-date knowl edge about the sources of the bio mass and the pro duc tion processes. Con clu sively, the pos i tive ef fects of biochar for car bon se ques tra tion on some prop er ties of the var ious ce men ti tious ap pli ca tions were high lighted.

show abstract

Section: Mechanical Properties 2 1 Compressive Strengthmentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

View full text Add to dashboard Cite

show abstract

“…The reuse of dewatered AlS as low-cost adsorbent for P immobilization has been the focus of a large number of investigations in the past [1,3,14,17,21,[24][25][26]. Intensive static and column tests were conducted and adsorption behavior was investigated in great detail across the world [27,28]. The reported maximum P adsorption capacity by AlS is a wide range of 2.02-113.22 mg PO 4…”

Section: Capacity and Mechanisms Of Phosphorus Adsorptionmentioning

confidence: 99%

“…To date, except for the reuse routes in wastewater treatment processes, there are other reuse categories, such as reuse of dewatered AlS as building/construction materials or as a partial replacement for clay in clay brick manufacturing as well as in cement production [27,65]. In addition, land-based applications, which comprise the wide range of areas related to agriculture, forestry, and gardening, are also good alternatives for reuse and are worth further investigation and application [11,30].…”

Section: Implications For the Futurementioning

confidence: 99%

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

Zhao

Xie

et al. 2021

Processes

View full text Add to dashboard Cite

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.

show abstract

“…Reuse of dewatered WTS as low-cost adsorbent for phosphorus (P) immobilization represents a large number of investigations in the past [1,3,17,18]. Intensive studies have been conducted to explore the capacity of reusing dewatered WTS for various P and pesticide adsorption [6,[19][20][21].…”

Section: Wts Used As Low-cost Adsorbent For Various Pollutant Immobilmentioning

confidence: 99%

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

Zhao

Nzihou

Ren

et al. 2020

Waste Biomass Valor

View full text Add to dashboard Cite

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.

show abstract

Review on Different Beneficial Ways of Applying Alum Sludge in a Sustainable Disposal Manner

Cited by 27 publications

References 37 publications

Recent advancements in the use of biochar for cementitious applications: A review

Recent advancements in the use of biochar for cementitious applications: A review

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

Contact Info

Product

Resources

About