Treatment of mine water for the fast removal of zinc and lead by wood ash amended biochar

Cairns, S. C.; Todd, A. Miller; Robertson, Iain; Byrne, Patrick; Dunlop, Tom

doi:10.1039/d2va00085g

Cited by 3 publications

(3 citation statements)

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“…6,7 The applications of biocarbon are not limited to ller and reinforcement applications; it is also advantageous for the fabrication of nextgeneration functional carbon materials for water treatment. [8][9][10][11][12][13][14][15] Toward the replacement of petroleum-based carbon ller using sustainable biocarbon, the critical challenge lies in achieving the chemical and physical characteristics equivalent to carbon black. 16,17 Even a slight change in the orbital structure or microscopic structural forms of carbon can result in an extensive range of captivating properties in terms of minimal selling price and environmental impacts of biochar were studied through TEA and cradle-to-grave LCA.…”

Section: Introductionmentioning

confidence: 99%

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Recent advances on value-added biocarbon preparation by the pyrolysis of renewable and waste biomass, their structure and properties: a move toward an ecofriendly alternative to carbon black

MP,

Misra,

Mohanty

2023

Environ. Sci.: Adv.

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Section: Introductionmentioning

confidence: 99%

“…6,7 The applications of biocarbon are not limited to filler and reinforcement applications; it is also advantageous for the fabrication of next-generation functional carbon materials for water treatment. 8–15…”

Section: Introductionmentioning

confidence: 99%

Recent advances on value-added biocarbon preparation by the pyrolysis of renewable and waste biomass, their structure and properties: a move toward an ecofriendly alternative to carbon black

MP,

Misra,

Mohanty

2023

Environ. Sci.: Adv.

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show abstract

“…Pyrolysis fully eliminates harmful pathogenic organisms within the sludge and creates biochar, a porous, recalcitrant carbonaceous material. Biochar has many diverse uses including in soil remediation to remove environmental contaminants such as heavy metals from aqueous media (Cairns et al, 2022), as media in biofilters to remove faecal indicator bacteria from stormwater (Nabiul Afrooz & Boehm, 2017;Ulrich et al, 2017) and as a carbon sequestering additive in building material (Gupta et al, 2018) and in cattle feed to minimize enteric methane production from dairy cattle (Leng et al, 2012). One of the most significant uses of biochar, however, is as a soil amendment to improve soil fertility (Atkinson et al, 2010;Chan & Xu, 2009) whilst also sequestering carbon (Ippolito et al, 2012;Johannes Lehmann, 2007) and reducing anthropogenic CO2, CH4, and N2O emissions (Woolf et al, 2010).…”

Section: Biocharmentioning

confidence: 99%

Properties, agronomic uses and public perceptions of faecal sludge biochar

Nicholas

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Since 2000 the proportion of the population in low and middle- income nations that use “unimproved” sanitation facilities is increasing, in 2020 3.5 billion people lacked access to safely managed sanitation facilities. Inadequate sanitation facilities and lack of clean water are key factors in the contraction of diarrheal disease which is responsible for the deaths of approximately 525,000 children every year (WHO, 2017).Faecal sludge collected from on-site sanitation facilities is often dumped into the local environment or reused untreated on farmland. The recycling and re-use of faecal sludge can improve sanitation in developing nations as well as playing a pivotal role in the development of a circular economy within the agriculture industry. Here, biochars derived from faecal sludge were characterized with regards to a potential end-use in agriculture. All faecal sludge biochars were found to have high ash content which contributed to the high pH values measured. All biochars recorded relatively low carbon content and BET porosimetry indicated low specific surface areas. Fourier transform infrared spectroscopy revealed similar organic surface groups for each biochar. X-ray diffraction analysis differed slightly between biochars, but all displayed a high mineral content (Si, Ca, K and Mg).Faecal sludge biochar was investigated as a soil amendment/fertilizer with acidic soil in two experiments; one conducted in an outdoor greenhouse in natural sunlight and one in a controlled temperature laboratory under a 24-hour photoperiod. It was found that faecal sludge biochar addition to acidic soil increased crop yield, fruit number, plant height and plant biomass and also reduced water runoff in Micro-Tom tomatoes. A combined biochar and fertilizer treatment together produced plants with greater plant height, and tomato yield. The high pH biochar initiated a liming effect which increased nutrient availability as evident in the combined biochar and fertilizer treatment. Under continuous light conditions biochar addition increased plant height, and tomato yield compared to control. However, biochar addition resulted in greater continuous light-induced leaf injury compared to the combined biochar and fertilizer treatment. The combined fertilizer and biochar treatment with a lower rate of biochar plus the addition of nutrients significantly reduced continuous light-induced leaf injury.A survey investigating the public perception of biochar as a soil enhancer in agriculture focusing on faecal sludge derived biochar was conducted. This revealed the “disgust effect” – a “squeamishness” associated with the use of faecal sludge biochar by members of the public. Also, gender differences, issue awareness, and age need to be taken into consideration when enforcing management and policy decisions regarding the land application of faecal sludge biochar.

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Removal of cadmium and zinc from water using sewage sludge-derived biochar

Shah,

Zakharova,

Batool

et al. 2024

Sustainable Chemistry for the Environment

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Treatment of mine water for the fast removal of zinc and lead by wood ash amended biochar

Abstract: Lead and zinc mines are a primary source of environmental (post)-transition metal contamination resulting in major water pollution. In this study, the use of biochar amended with wood ash (WAS)...

Cited by 3 publications

References 44 publications

Recent advances on value-added biocarbon preparation by the pyrolysis of renewable and waste biomass, their structure and properties: a move toward an ecofriendly alternative to carbon black

Recent advances on value-added biocarbon preparation by the pyrolysis of renewable and waste biomass, their structure and properties: a move toward an ecofriendly alternative to carbon black

Properties, agronomic uses and public perceptions of faecal sludge biochar

Removal of cadmium and zinc from water using sewage sludge-derived biochar

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