Pyrolysis of attapulgite clay blended with yak dung enhances pasture growth and soil health: Characterization and initial field trials

Rafiq, Muhammad; Joseph, Stephen; Li, Fēi; Bai, Yanfu; Shang, Zhanhuan; Rawal, Aditya; Hook, James M.; Munroe, Paul; Donne, Scott W.; Taherymoosavi, Sara; Mitchell, David R. G.; Pace, Ben; Mohammed, Mohanad Hazim; Horvat, J.; Marjo, Christopher E.; Wagner, Avital; Wang, Yanlong; Ye, Jun; Long, Ruijun

doi:10.1016/j.scitotenv.2017.06.186

Cited by 36 publications

(24 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pH, EC, and CEC values of YBC1/YBC2/YBC3s were 7.55/9.72/10.49, 722.25/168.50/1346 µS/cm, and 73.52/108.29/44.41 cmol kg −1 , respectively ( Figure 2). The properties of YBCs were similar to the previous studies [23,24] and were significantly affected by pyrolysis temperature [25,26]. The pH, EC, and CEC values of S1/S2/S3/S4 were 8.90/8.46/8.38/8.55, 356.80/505.50/111.25/41300.00 µS/cm, and 10.99/6.02/4.14/10.92 cmol kg −1 , respectively ( Figure 2).…”

Section: Change In Ph Ec Cec and Texture Of Soils Affected By Addisupporting

confidence: 88%

“…The bands in the region 3650-3350 cm −1 were attributed to the stretching vibration of O-H/N-H groups of polymeric compounds, predominantly due to the presence of cellulose, while those at 2850-3050 cm −1 could be regarded as alkyl C-H stretching [39]. The bands of soil samples with peaks around 1650 cm −1 were ascribed to the presence of carboxyl groups (C=O), while the bands observed around 1100 cm −1 and 900 cm −1 were assigned to alcohol group and amine groups [24,40]. The peaks around 800, 700, 550, and 460 cm −1 explained the presence of Fe-O, Al-O, A-O-Si, and Si-O, respectively [41,42].…”

Section: Changes In Spectral Characteristics and Mineral Constituent mentioning

confidence: 98%

See 1 more Smart Citation

Effects of Yak Dung Biomass Black Carbon on the Soil Physicochemical Properties of the Northeastern Qinghai-Tibet Plateau

Min

Lü

et al. 2019

Sustainability

View full text Add to dashboard Cite

The physicochemical properties of soils might be affected by the addition of biomass black carbon, a special black carbon produced by incomplete combustion of biomass. Therefore, this study performed experiments to explore the effects of yak dung biomass black carbon (YBC) on physicochemical properties of soils in the northeastern Qinghai-Tibet Plateau. Three YBCs (pyrolyzed at 300, 500, and 700 °C) were separately added into four typical soils with three addition amounts (1%, 5%, and 10%). Changes of soil texture, pH, electrical conductivity (EC), cation exchange capacity (CEC), CHN contents, morphologies, functional groups, and mineral constituents of soils were comparatively studied. The results showed that addition of YBCs affected physicochemical properties of soils. Soil pH, EC, CEC, and carbon/nitrogen content were positively related with addition amount of YBCs. YBC particles were unevenly distributed among soil particles and positively related with addition amount. Addition of YBCs did not change texture, functional groups, and mineral constituents of soils. These results indicated that addition of YBC would be beneficial to stability of the soil ecosystem and sustainability of the northeastern Qinghai-Tibet Plateau.

show abstract

Section: Change In Ph Ec Cec and Texture Of Soils Affected By Addisupporting

confidence: 88%

Section: Changes In Spectral Characteristics and Mineral Constituent mentioning

confidence: 98%

Effects of Yak Dung Biomass Black Carbon on the Soil Physicochemical Properties of the Northeastern Qinghai-Tibet Plateau

Min

Lü

et al. 2019

Sustainability

View full text Add to dashboard Cite

show abstract

“…Pyrolyzed rice straw with kaolin, calcite, and calcium dihydrogen phosphate minerals to biochar enhanced the stability of biochar [178]. Yak dung and attapulgite clay mixed to produce biochars at 50/50 ratio clay to dung in Tibet resulted in low-cost high pasture yields and grass nutrition quality [180]. Higher pyrolysis temperature with the addition of clay proportions resulted in higher concentration of stable carbon, surface area and porosity, surface mineral concentration, and electrochemical capacitance, contrary to the lower temperature that resulted in higher concentration of total C and N, C/O and N functional groups, and magnetic moment [180].…”

Section: Ghgs Emissionmentioning

confidence: 99%

Risk Evaluation of Pyrolyzed Biochar from Multiple Wastes

Ndirangu

Liu

et al. 2019

Journal of Chemistry

View full text Add to dashboard Cite

This paper aims at demonstrating the significance of biochar risk evaluation and reviewing risk evaluation from the aspects of pyrolysis process, feedstock, and sources of hazards in biochar and their potential effects and the methods used in risk evaluation. Feedstock properties and the resultant biochar produced at different pyrolysis process influence their chemical, physical, and structural properties, which are vital in understanding the functionality of biochar. Biochar use has been linked to some risks in soil application such as biochar being toxic, facilitating GHGs emission, suppression of the effectiveness of pesticides, and effects on soil microbes. These potential risks originate from feedstock, contaminated feedstock, and pyrolysis conditions that favor the creation of characteristics and functional groups of this nature. These toxic compounds formed pose a threat to human health through the food chain. Determination of toxicity levels is a first step in the risk management of toxic biochar. Various sorption methods of biochar utilized low-cost adsorbents, engineered surface functional groups, and nZVI modified biochars. The mechanisms of organic compound removal was through sorption, enhanced sorption, modified biochar, postpyrolysis thermal air oxidation and that of PFRs degradation was through activation, photoactive functional groups, magnetization, and hydrothermal synthesis. Emissions of GHGs in soils amended with biochar emanated through physical and biotic mediated mechanisms. BCNs have a significance in reducing the health quotient indices for PTEs risk contamination by suppressing cancer risk arising from consumption of contaminated food. The degree of environmental risk assessment of HM pollution in biomass and biochars has been determined by using potential ecological risk index and RAC while organic contaminant degradation by EPFRs was considered when assessing the environmental roles of biochar in regulating the fate of contaminants removal. The magnitude of technologies’ net benefit must be considered in relation to the associated risks.

show abstract

“…In recent years, more and more research activities had been dedicated to enhancing biochar stability. The methods included: (i) copyrolyzing biomass with beneficial minerals to produce mineral-rich biochar (Rafiq et al 2017;Rawal et al 2016;Ren et al 2018;Xiao et al 2018b;Yang et al 2018b); and (ii) impregnation of biochar with minerals (Yang et al 2016a(Yang et al , 2018a. The designed biochars would probably improve biochar stability and carbon sequestration capacity, and mitigate global climate change.…”

Section: Biochar and Global Climate Changementioning

confidence: 99%

A scientometric review of biochar research in the past 20 years (1998–2018)

Ata-Ul-Karim

Singh

et al. 2019

Biochar

176

View full text Add to dashboard Cite

Biochar is the carbon-rich product obtained from the thermochemical conversion of biomass under oxygen-limited conditions. Biochar has attained extensive attention due to its agronomical and environmental benefits in agro-ecosystems. This work adopts the scientometric analysis method to assess the development trends of biochar research based on the literature data retrieved from the Web of Science over the period of 1998-2018. By analysing the basic characteristics of 6934 publications, we found that the number of publications grew rapidly since 2010. Based on a keyword analysis, it is concluded that scholars have had a fundamental recognition of biochar and preliminarily found that biochar application had agronomic and environmental benefits during the period of 1998-2010. The clustering results of keywords in documents published during 2011-2015 showed that the main research hotspots were "biochar production", "biochar and global climate change", "soil quality and plant growth", "organic pollutants removal", and "heavy metals immobilization". While in 2016-2018, beside these five main research hotspots, "biochar and composting" topic had also received greater attention, indicating that biochar utilization in organic solid waste composting is the current research hotspot. Moreover, updated reactors (e.g., microwave reactor, fixed-bed reactor, screw-feeding reactor, bubbling fluidized bed reactor, etc.) or technologies (e.g., solar pyrolysis, Thermo-Catalytic Reforming process, liquefaction technology, etc.) applied for efficient energy production and modified biochar for environmental remediation have been extensively studied recently. The findings may help the new researchers to seize the research frontier in the biochar field.

show abstract

Pyrolysis of attapulgite clay blended with yak dung enhances pasture growth and soil health: Characterization and initial field trials

Cited by 36 publications

References 49 publications

Effects of Yak Dung Biomass Black Carbon on the Soil Physicochemical Properties of the Northeastern Qinghai-Tibet Plateau

Effects of Yak Dung Biomass Black Carbon on the Soil Physicochemical Properties of the Northeastern Qinghai-Tibet Plateau

Risk Evaluation of Pyrolyzed Biochar from Multiple Wastes

A scientometric review of biochar research in the past 20 years (1998–2018)

Contact Info

Product

Resources

About