Sustainable wastewater treatment by biochar/layered double hydroxide composites: Progress, challenges, and outlook

Zubair, Mukarram; Ihsanullah, Ihsanullah; Aziz, Hamidi Abdul; Ahmad, Mohd Azmier; Al‐Harthi, Mamdouh A.

doi:10.1016/j.biortech.2020.124128

Cited by 202 publications

(41 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biochar derived from plant and animal wastes is a typical adsorbent to remove inorganic and organic pollutants in water due to its low cost and abundant feed stock availability [22][23][24]. In addition, the large surface area, high mineral content, and rich oxygen-containing functional groups of biochar are favorable for the adsorption of wastewater contaminants such as antibiotics, dyes, and heavy metals [25][26][27]. The quality and yield of biochar are greatly affected by the hemicellulose, lignin, and cellulose contents of feedstock, as well as the moisture content.…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Cr (VI) with Biochar and Optimized Parameters by Response Surface Methodology

et al. 2021

View full text Add to dashboard Cite

A highly efficient reduction process of Cr (VI) with biochar was conducted in this paper. The results showed that nearly 100% Cr (VI) was reduced at selected reaction conditions: Dosage of biochar at m (C)/m(Cr) = 3.0, reaction temperature of 90 °C, reaction time of60 min, and concentration of H2SO4 of 20 g/L. The reduction kinetics analysis demonstrated that the reduction of Cr (VI) fitted well with the pseudo-first-order model and the apparent activation energy was calculated to be 40.24 kJ/mol. Response surface methodology confirmed that all of the experimental parameters had a positive effect on the reduction of Cr (VI). The influence of each parameter on the reduction process followed the order: Dosage of biochar>concentration of H2SO4>reaction temperature >reaction time. This paper provides a versatile strategy for the treatment of wastewater containing Cr (VI) and shows a bright tomorrow for wastewater treatment.

show abstract

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Cr (VI) with Biochar and Optimized Parameters by Response Surface Methodology

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Biochar derived from plant and animal wastes was a typical adsorbent to remove inorganic and organic pollutants in water due to its low-cost and abundant feed stock availability [22][23][24]. In addition, the large surface area, high mineral content, and rich oxygencontaining functional groups of biochar were favorable for adsorption of wastewater contaminants such as antibiotics, dyes, and heavy metals [25][26][27]. Thus, biochar was applied to adsorb chromium (VI) in this paper (actually biochar was acted as a reductant and the adsorption process was proved to be a reduction process).…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Cr (VI) with Biochar and Parameters Optimized by Response Surface Methodology

Peng¹,

Guo²

2021

Preprint

View full text Add to dashboard Cite

A highly efficient reduction process of Cr (VI) with biochar was conducted in this paper. The results showed that nearly 100% Cr (VI) was reduced at selected reaction conditions: the dosage of biochar at m (C)/m(Cr) = 3.0, reaction temperature of 90 ℃, reaction time at 60 min and concentration of H2SO4 of 20 g/L, respectively. The reduction kinetics analysis demonstrated that the reduction of Cr (VI) fitted well with the pseudo-first-order model and the apparent activation energy was calculated to 40.24 kJ/mol. Response surface methodology confirmed that all the experimental parameters had positive effect on the reduction of Cr (VI). The influence of each parameter on the reduction process followed the order: dosage of biochar> Concentration of H2SO4 > Reaction Temperature > Reaction Time. This paper provided a versatile strategy for treatment of wastewater containing Cr (VI) and showed a bright tomorrow for wastewater treatment.

show abstract

“…Commonly, 2:1 clay minerals possess higher specific surface areas and cation exchange capacity, which may perform better than 1:1 clay minerals (Bergaya & Lagaly, 2013). For the fabrication of anionic clay, novel combinations of divalent and trivalent metal cations have emerged, although Mg‐Al LDH is still the most common type (Zubair et al, 2021). In comparison, the aims of phosphate mineral attachment are much simpler, including metal precipitation and direct release of nutrients.…”

Section: A Practical Guide To Selection Fabrication and Application Of Biochar Compositesmentioning

confidence: 99%

Biochar composites: Emerging trends, field successes and sustainability implications

Wang

Tsang

et al. 2021

Soil Use and Management

View full text Add to dashboard Cite

Engineered biochars are promising candidates in a wide range of environmental applications, including soil fertility improvement, contaminant immobilization, wastewater treatment and in situ carbon sequestration. This review provides a systematic classification of these novel biochar composites and identifies the promising future trends in composite research and application. It is proposed that metals, minerals, layered double hydroxides, carbonaceous nanomaterials and microorganisms enhance the performances of biochars via distinct mechanisms. In this review, four novel trends are identified and assessed critically. Firstly, facile synthesis methods, in particular ball milling and co‐pyrolysis, have emerged as popular composite fabrication strategies that are suitable for large‐scale applications. Secondly, biochar modification with green materials, such as natural clay minerals and microorganisms, align well with the on‐going green and sustainable remediation (GSR) movement. Furthermore, new applications in soil health improvement and climate change mitigation support the realization of United Nation's Sustainable Development Goals (SDGs). Finally, the importance of field studies is getting more attention, since evidence of field success is critically needed before large‐scale applications.

show abstract

Sustainable wastewater treatment by biochar/layered double hydroxide composites: Progress, challenges, and outlook

Cited by 202 publications

References 70 publications

Efficient Removal of Cr (VI) with Biochar and Optimized Parameters by Response Surface Methodology

Efficient Removal of Cr (VI) with Biochar and Optimized Parameters by Response Surface Methodology

Efficient Removal of Cr (VI) with Biochar and Parameters Optimized by Response Surface Methodology

Biochar composites: Emerging trends, field successes and sustainability implications

Contact Info

Product

Resources

About