Production and beneficial impact of biochar for environmental application: A comprehensive review

Zhou, Yuwen; Qin, Shiyi; Verma, Subhash; Şar, Taner; Sarsaiya, Surendra; Ravindran, Balasubramani; Liu, Tao; Sindhu, Raveendran; Patel, Anil Kumar; Binod, Parameswaran; Varjani, Sunita; Singhnia, Reeta Rani; Zhang, Zengqiang; Awasthi, Mukesh Kumar

doi:10.1016/j.biortech.2021.125451

Cited by 193 publications

(31 citation statements)

References 130 publications

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“…However, we have multiple cases of ash treatment having the highest adsorption, and for Al and Fe, we have adsorption worse than with biochar only with lime addition. In these cases, it might be possible that the pH increased too high, and instead turned detrimental to the adsorption process of these metals (Kołodyńska et al, 2012, Zhou et al, 2021.…”

Section: Main Adsorption Mechanisms and Desorptionmentioning

confidence: 99%

Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water

Kinnunen

Laurén

Pumpanen

et al. 2021

Water Air Soil Pollut

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A 96-h laboratory experiment was conducted to assess the potential of biochar as a water protection tool for acid sulfate soil runoff. Acid sulfate soils pose a risk to water bodies due to acid, metal-rich runoff, especially in drained peatland forests. New water protection methods, such as adsorption with biochar, are needed. We investigated the capability of spruce and birch biochar to adsorb metals and reduce acidity in the water. Water from an acid sulfate site was stirred with biochar, biochar with lime, and biochar with ash. We determined water Al, S, Fe, Cu, Co, Cd, Ni, and Zn concentrations periodically, as well as pH and total organic carbon at the beginning and the end of the experiment. The studied substances are considered the most abundant and environmentally harmful elements in the acid sulfate soils in Finland. Biochar surface characteristics were analyzed with FTIR spectroscopy. Concentration changes were used to parametrize adsorption kinetics models. Biochar adsorbed metals and increased pH, but lime and ash additives did not always improve the adsorption. Spruce biochar and ash addition had generally higher adsorption than birch biochar and lime addition. The adsorption was dominated by Al and Fe at lower pH, while increasing pH improved the adsorption of Cd and Zn. The results show that biochar can increase the water pH, as well as adsorb Al, Fe, Co, Cd, Ni, and Zn. Further work could include an actual-scale biochar reactor in a laboratory and field conditions.

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Section: Main Adsorption Mechanisms and Desorptionmentioning

confidence: 99%

Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water

Kinnunen

Laurén

Pumpanen

et al. 2021

Water Air Soil Pollut

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“…The addition of biochar has tremendous advantages [ 42 ]. These include carbon sequestration [ 43 ], soil quality improvement [ 44 ], modifying physiological characteristics of soil [ 45 ], enhancing mycorrhizal associations [ 46 , 47 ], improving soil structure [ 48 ], altering bioavailability, improving nutrient cycling [ 49 ], and soil nutrient-holding capacity [ 43 , 50 , 51 ]. Biochar generally has excellent properties such as high stability, well-developed pore structure and abundant surface functional groups [ 52 ].…”

Section: Application Of Engineered Biochar In Different Fieldsmentioning

confidence: 99%

“… Increased abundance of nosZ and mcrA genes, and bacteria related to N and C transformation. [ 48 ] Commercial biochar derived from coconut and walnut shells Liquid pig manure storage Enhanced NH 3 emission. NA NA [ 276 ] Biochar composite Soil N 2 O and CO 2 emissions were inhibited.…”

Section: Role Of Biochar On Microbial Dynamics and Enzymes Activitiesmentioning

confidence: 99%

Bioengineered biochar as smart candidate for resource recovery toward circular bio-economy: a review

et al. 2021

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Biochar’s ability to mediate and facilitate microbial contamination degradation, as well as its carbon-sequestration potential, has sparked interest in recent years. The scope, possible advantages (economic and environmental), and future views are all evaluated in this review. We go over the many designed processes that are taking place and show why it is critical to look into biochar production for resource recovery and the role of bioengineered biochar in waste recycling. We concentrate on current breakthroughs in the fields of engineered biochar application techniques to systematically and sustainable technology. As a result, this paper describes the use of biomass for biochar production using various methods, as well as its use as an effective inclusion material to increase performance. The impact of biochar amendments on microbial colonisation, direct interspecies electron transfer, organic load minimization, and buffering maintenance is explored in detail. The majority of organic and inorganic (heavy metals) contaminants in the environment today are caused by human activities, such as mining and the use of chemical fertilizers and pesticides, which can be treated sustainably by using engineered biochar to promote the establishment of a sustainable engineered process by inducing the circular bioeconomy.

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“…By increasing the adsorbent dosage from 0.25 to 3.00 g L −1 , the PAH removal raised and reached its maximum level, while COD removal decreased and reached the minimum level. PW contains a considerable number of organic pollutants (both +ve and −ve ions), which are measured as COD [56]. It is assumed that all the organic pollutants (which are the part of COD), except PAHs, showed a negative trend due to the agglomeration of absorbent particles.…”

Section: Effect Of Biochar Dosagementioning

confidence: 99%

Optimization of Micro-Pollutants’ Removal from Wastewater Using Agricultural Waste-Derived Sustainable Adsorbent

Alhothali

Haneef

Mustafa

et al. 2021

IJERPH

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Water pollution due to the discharge of untreated industrial effluents is a serious environmental and public health issue. The presence of organic pollutants such as polycyclic aromatic hydrocarbons (PAHs) causes worldwide concern because of their mutagenic and carcinogenic effects on aquatic life, human beings, and the environment. PAHs are pervasive atmospheric compounds that cause nervous system damage, mental retardation, cancer, and renal kidney diseases. This research presents the first usage of palm kernel shell biochar (PKSB) (obtained from agricultural waste) for PAH removal from industrial wastewater (oil and gas wastewater/produced water). A batch scale study was conducted for the remediation of PAHs and chemical oxygen demand (COD) from produced water. The influence of operating parameters such as biochar dosage, pH, and contact time was optimized and validated using a response surface methodology (RSM). Under optimized conditions, i.e., biochar dosage 2.99 g L−1, pH 4.0, and contact time 208.89 min, 93.16% of PAHs and 97.84% of COD were predicted. However, under optimized conditions of independent variables, 95.34% of PAH and 98.21% of COD removal was obtained in the laboratory. The experimental data were fitted to the empirical second-order model of a suitable degree for the maximum removal of PAHs and COD by the biochar. ANOVA analysis showed a high coefficient of determination value (R2 = 0.97) and a reasonable second-order regression prediction. Additionally, the study also showed a comparative analysis of PKSB with previously used agricultural waste biochar for PAH and COD removal. The PKSB showed significantly higher removal efficiency than other types of biochar. The study also provides analysis on the reusability of PKSB for up to four cycles using two different methods. The methods reflected a significantly good performance for PAH and COD removal for up to two cycles. Hence, the study demonstrated a successful application of PKSB as a potential sustainable adsorbent for the removal of micro-pollutants from produced water.

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Production and beneficial impact of biochar for environmental application: A comprehensive review

Cited by 193 publications

References 130 publications

Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water

Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water

Bioengineered biochar as smart candidate for resource recovery toward circular bio-economy: a review

Optimization of Micro-Pollutants’ Removal from Wastewater Using Agricultural Waste-Derived Sustainable Adsorbent

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