Removal of Cd and Pb with biochar made from dairy manure at low temperature

Chen, Zhiliang; Zhang, Jianqiang; Huang, Ling; Yuan, Zeming; Li, Zhaojun; Liu, Minchao

doi:10.1016/s2095-3119(18)61987-2

Cited by 98 publications

(34 citation statements)

References 35 publications

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“…Ni-Fe showed a significant correlation, this can be attributed to a similar petroleum source. Cd-Pb also showed a significant positive correlation, these can be attributed to deposition from abattoir manure [50]. Therefore, the presence of heavy metal in Woji Creek is influenced by natural as well as anthropogenic sources.…”

Section: Correlation and Pollution Source Analysismentioning

confidence: 90%

Spatial and temporal distribution and contamination assessment of heavy metal in Woji Creek

Dibofori-Orji¹,

Ihunwo

Udo

et al. 2019

Environ. Res. Commun.

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Land use is one major factor that affects river water quality which is related to anthropogenic activities. Studies have shown that abandoned boats on watershed, petroleum and untreated wastewater from abattoirs can lead to anthropogenic pollution in surface waters. This study, therefore, was designed to assess spatial and temporal variation of selected heavy metals and level of pollution in Woji Creek. The study was carried out in the months of August, September and October 2018. Water samples were collected from five stations along the creek over a 3.2 km stretch. Water was collected to be analysed for heavy metals (Nickel, Cadmium, Copper, Lead and Iron). Results were subjected to ANOVA and heavy metal pollution index (HPI) was calculated using aquatic toxicity reference values (TRV) as threshold values. Heavy metal dominance in Woji was in the order of Pb>Ni>Fe>Cd>Cu. In the river, Ni had mean values ranging from 0.379±0.259 mg l −1 in August to 0.545±0.369 in October, while Pb with the highest concentration had mean values ranging from 0.229±0.333 mg l −1 in October to 1.534±0.103 mg l −1 in September. Concentrations of metals analysed were high than the TRV. Temporal analysis of HPI calculated for the study was above the critical heavy metal pollution index (100) (August=329.358, September=361.796, October=112.715). A correlation was observed between heavy metals analysed during the study. Spatial analysis of HPI showed higher pollution level at Station 3 with the highest anthropogenic activity along the creek. Cu showed a negative correlation to other metals analysed. Sources of pollution on this creek was identified to be both natural and majorly anthropogenic sources. This study, therefore, points out the need for proper environmental management as regards commercial activities around the waterways.

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Section: Correlation and Pollution Source Analysismentioning

confidence: 90%

Spatial and temporal distribution and contamination assessment of heavy metal in Woji Creek

Dibofori-Orji¹,

Ihunwo

Udo

et al. 2019

Environ. Res. Commun.

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“…In order to increase the biochar CEC by embedding more acidic oxygen functional groups on the surface, biochar was further treated with strong oxidants like hydrogen peroxide [39] and ozone [40]. Therefore, the removal of cationic pollutants (e.g., heavy metal ions, cationic dye) from aqueous solutions by using DM-based biochars has been widely studied in the literature [10][11][12][13][14][15][16][17]. Figure 6 showed the elemental compositions on the surfaces of the optimal product DMC-900 by the energy dispersive X-ray spectroscopy (EDS).…”

Section: Chemical Characterization Of Dmc Productsmentioning

confidence: 99%

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

2019

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In this work, the thermochemical analyses of dairy manure (DM), including the proximate analysis, ultimate (elemental) analysis, calorific value, thermogravimetric analysis (TGA), and inorganic elements, were studied to evaluate its potential for producing DM-based char (DMC) with high porosity. The results showed that the biomass should be an available precursor for producing biochar materials based on its high contents of carbon (42.63%) and volatile matter (79.55%). In order to characterize their pore properties, the DMC products produced at high pyrolysis temperatures (500–900°C) were analyzed using surface area and porosity analyzer, pycnometer, and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). The values of pore properties for the DMC products increased with an increase in pyrolysis temperature, leading to more pore development and condensed aromatic cluster at elevated temperatures. Because of the microporous and mesoporous structures from the N2 adsorption–desorption isotherms with the hysteresis loops (H4 type), the Brunauer–Emmett–Teller (BET) surface area of the optimal biochar (DMC-900) was about 360 m2/g, which was higher than the data reported in the literature. The highly porous structure was also seen from the SEM observations. More significantly, the cation exchange capacity (CEC) of the optimal DMC product showed a high value of 57.5 ± 16.1 cmol/kg. Based on the excellent pore and chemical properties, the DMC product could be used as an effective amendment and/or adsorbent for the removal of pollutants from the soil media and/or fluid streams.

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“…Although there are many researches reusing dairy cattle manure as a feedstock for biochar production, only few studies focused on using the dairy manure-based biochar as an adsorbent or biosorbent for the removal of pollutants from the aqueous solution and soil systems [6][7][8][9][10][11][12][13][14]. Cao and other researchers [6,7] prepared the biochars at low temperatures (200-500 • C), indicating that the resulting biochar (SSA 2.7-13 m 2 /g) can be used as an effective sorbent for removal of lead and atrazine from the aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

“…Zhu et al [12] performed the removal of methylene blue (MB) from aqueous solution by the biochars produced at 200 and 800 • C (denoted as CMB 200 and CMB 800 , respectively; SSA 0.3 and 3.6 m 2 /g), showing a better MB sorption by CMB 200 due to its strong interactions involving ion exchange, electrostatic attraction, hydrogen bonding and physical adsorption. Chen et al [13] reported the removal of Cd and Pb with the biochars (including the biochar modified by NaOH treatment; SSA 9.4 and 25.9 m 2 /g) produced at 300 • C, revealing that the sorption mechanisms are predominantly controlled by chemisorption and complexation with carboxyl/hydroxyl functional groups. Zhao et al [14] prepared the biochar (SSA 74 m 2 /g) obtained at 700 • C for studying its effects on adsorption of sulfate, showing that the electrostatic interaction between the biochar and sulfate ion could be the determining adsorption mechanism.…”

Section: Introductionmentioning

confidence: 99%

Highly Porous and Nutrients-Rich Biochar Derived from Dairy Cattle Manure and Its Potential for Removal of Cationic Compound from Water

2019

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The use of biochar in the horticulture and crop fields is a recent method to improve soil fertility due to its porous features and rich nutrients. In the present study, dairy manure (DM) was used as a biomass precursor in the preparation of highly porous biochar (DM-BC) produced at specific conditions. Based on N2 adsorption-desorption isotherms and scanning electron microscopy (SEM) observations, the resulting biochar featured its microporous/mesoporous textures with a BET surface area of about 300 m2/g and total pore volume of 0.185 cm3/g, which could be a low-cost biosorbent for the effective removal of methylene blue (MB) from the aqueous solution. As observed by the energy dispersive X-ray spectroscopy (EDS), the primary inorganic nutrients on the surface of DM-BC included calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), silicon (Si), sulfur (S), sodium (Na) and aluminum (Al). Furthermore, the resulting biochar was investigated in duplicate for its biosorption performance of cationic compound (i.e., methylene blue, MB) from the aqueous solution with various initial MB concentrations and DM-BC dosages at 25 °C. The findings showed that the biosorption kinetic parameters fitted by the pseudo-second order rate model with high correlations were consistent with its porous features. These experimental results suggested that the porous DM-based biochar could be reused as a biosorbent, biofertilizer, or soil amendments due to the high porosity and the abundance in nutrient minerals.

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Removal of Cd and Pb with biochar made from dairy manure at low temperature

Cited by 98 publications

References 35 publications

Spatial and temporal distribution and contamination assessment of heavy metal in Woji Creek

Spatial and temporal distribution and contamination assessment of heavy metal in Woji Creek

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

Highly Porous and Nutrients-Rich Biochar Derived from Dairy Cattle Manure and Its Potential for Removal of Cationic Compound from Water

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