keyword
MENU ▼
Read by QxMD icon Read
search

Biochar

keyword
https://www.readbyqxmd.com/read/28819697/mechanistic-understanding-of-crystal-violet-dye-sorption-by-woody-biochar-implications-for-wastewater-treatment
#1
Awanthi Wathukarage, Indika Herath, M C M Iqbal, Meththika Vithanage
Dye-based industries, particularly small and medium scale, discharge their effluents into waterways without treatment due to cost considerations. We investigated the use of biochars produced from the woody tree Gliricidia sepium at 300 °C (GBC300) and 500 °C (GBC500) in the laboratory and at 700 °C from a dendro bioenergy industry (GBC700), to evaluate their potential for sorption of crystal violet (CV) dye. Experiments were conducted to assess the effect of pH reaction time and CV loading on the adsorption process...
August 17, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28816416/offsetting-global-warming-induced-elevated-greenhouse-gas-emissions-from-an-arable-soil-by-biochar-application
#2
Chris Bamminger, Christian Poll, Sven Marhan
Global warming will likely enhance greenhouse gas (GHG) emissions from soils. Due to its slow decomposability, biochar is widely recognized as effective in long-term soil carbon (C) sequestration and in mitigation of soil GHG emissions. In a long-term soil warming experiment (+2.5 °C, since July 2008) we studied the effect of applying high-temperature Miscanthus biochar (0, 30 t ha(-1) , since August 2013) on GHG emissions and their global warming potential (GWP) during two years in a temperate agroecosystem...
August 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28811160/high-efficiency-removal-of-lead-from-wastewater-by-biochar-derived-from-anaerobic-digestion-sludge
#3
Shih-Hsin Ho, Yi-di Chen, Zhong-Kai Yang, Dillirani Nagarajan, Jo-Shu Chang, Nan-Qi Ren
The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400°C to 800°C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb(2+) from aqueous solutions efficiently with an adsorption capacity of 51.20mg/g. The Pb(2+) adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively...
August 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28811016/activated-biochar-preparation-characterization-and-electroanalytical-application-in-an-alternative-strategy-of-nickel-determination
#4
Cristiane Kalinke, Paulo Roberto Oliveira, Geovane Arruda Oliveira, Antonio Sálvio Mangrich, Luiz H Marcolino-Junior, Márcio F Bergamini
This work reports for the first time the use of chemically activated biochar as electrode modifier for nickel determination. The biochar activation was performed by refluxing with HNO3, which promoted a higher nickel preconcentration compared to unmodified and modified biochar precursor electrodes. Morphological and structural characterization revealed the increase of surface acid groups, surface area and porosity of biochar after activation. Nickel determination was investigated adopting an alternative voltammetric methodology based on monitoring the Ni(II)/Ni(III) redox couple...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28809540/simplified-modeling-of-organic-contaminant-adsorption-by-activated-carbon-and-biochar-in-the-presence-of-dissolved-organic-matter-and-other-competing-adsorbates
#5
Kyle Koyu Shimabuku, Julian M Paige, Marisol Luna Agüero, R Scott Summers
Cyclohexanol, phenol, benzoic acid, and phenanthrene fractional removal (italicized words are defined within the main text) by pulverized granular activated carbon and biochar adsorption in deionized water and stormwater was independent of target-adsorbate initial concentrations (C0) when C0s were below concentration thresholds. This permits a simple-modeling approach. C0-independent removal in deionized water at low-target-adsorbate concentrations potentially suggests that DOM in the deionized water induce a competitive effect that causes deviations from the Freundlich model...
August 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28806678/the-sorptive-and-reductive-capacities-of-biochar-supported-nanoscaled-zero-valent-iron-nzvi-in-relation-to-its-crystallite-size
#6
Shengsen Wang, Yanxia Zhou, Bin Gao, Xiaozhi Wang, Xianqiang Yin, Ke Feng, Jun Wang
In this work, nZVI was immobilized by bamboo derived biochars (nZVI/BB), hydrogen peroxide (H2O2) (nZVI/PBB) and nitric acid (HNO3) (nZVI/HBB) modified BB. H2O2 and HNO3 deceased surface area and pore volume of pristine biochars. Total iron (Fe) contents were 16.50, 24.40, and 13.08% for nZVI/BB, nZVI/PBB and nZVI/HBB, respectively. The X-ray diffraction revealed that nZVI in biochar matrix was dominantly metallic Fe coated with Fe oxides. The transmission electron microscopy indicated nZVI particle sizes were 41...
August 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/28803060/predictions-of-biochar-production-and-torrefaction-performance-from-sugarcane-bagasse-using-interpolation-and-regression-analysis
#7
Wei-Hsin Chen, Hung-Jen Hsu, Gopalakrishnan Kumar, Wojciech M Budzianowski, Hwai Chyuan Ong
This study focuses on the biochar formation and torrefaction performance of sugarcane bagasse, and they are predicted using the bilinear interpolation (BLI), inverse distance weighting (IDW) interpolation, and regression analysis. It is found that the biomass torrefied at 275°C for 60min or at 300°C for 30min or longer is appropriate to produce biochar as alternative fuel to coal with low carbon footprint, but the energy yield from the torrefaction at 300°C is too low. From the biochar yield, enhancement factor of HHV, and energy yield, the results suggest that the three methods are all feasible for predicting the performance, especially for the enhancement factor...
August 3, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28802992/effects-of-humic-acid-and-heavy-metals-on-the-sorption-of-polar-and-apolar-organic-pollutants-onto-biochars
#8
Fei Wang, Hongwen Sun, Xinhao Ren, Yarui Liu, Hongkai Zhu, Peng Zhang, Chao Ren
The effects of humic acid (HA) and heavy metals (Cu(2+) and Ag(+)) on the sorption of polar and apolar organic pollutants onto biochars that were produced at temperatures of 200 °C (BC200) and 700 °C (BC700) were studied. Due to the plentiful polar functional groups on BC200, cationic propranolol exhibited higher levels of sorption than naphthalene on BC200 while naphthalene and propranolol showed similar sorption capacities on BC700. HA changed the characteristics of biochars and generally inhibited the sorption of target organic pollutants on biochars; however, enhancement occurred in some cases depending on the pollutants involved and their concentrations, biochars used and the addition sequences and concentrations of HA...
August 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28802977/adsorption-and-coadsorption-mechanisms-of-cr-vi-and-organic-contaminants-on-h3po4-treated-biochar
#9
Nan Zhao, Chuanfang Zhao, Yizhong Lv, Weifang Zhang, Yuguo Du, Zhengping Hao, Jing Zhang
The study of simultaneous removal of heavy metals and organic contaminants has practical applications due to the coexistence of complex pollutants in the wastewater or soil. In this work, biochar was prepared to study the removal efficiencies of Cr(VI), naphthalene (NAP) and bisphenol A (BPA) in the single or mixed systems. H3PO4-treated biochar presented a much higher adsorption capacity of the pollutants than the untreated biochar and also showed a high resistance to coexisting salts. The maximum adsorption capacities for Cr(VI) and BPA were 116...
August 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/28802133/sorptive-removal-of-ionizable-antibiotic-sulfamethazine-from-aqueous-solution-by-graphene-oxide-coated-biochar-nanocomposites-influencing-factors-and-mechanism
#10
Danlian Huang, Xi Wang, Chen Zhang, Guangming Zeng, Zhiwei Peng, Jin Zhou, Min Cheng, Rongzhong Wang, Zhengxun Hu, Xiang Qin
Significant concerns have been raised over antibiotics pollution in aquatic environments in recent years. In this study, sorption of sulfamethazine (SMT) by novel graphene oxide-coated biochar nanocomposites (GO-BC) based on graphene oxide (GO) with bamboo sawdust biochar (BC) was investigated. In comparison with the original BC, the sorption capacity of GO-BC for SMT increased by 1.14 times. Sorption of SMT onto GO-BC was proved to be dominantly by chemisorption, and Freundlich isotherm described the sorption adequately...
July 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/28801768/the-influence-of-particle-size-and-feedstock-of-biochar-on-the-accumulation-of-cd-zn-pb-and-as-by-brassica-chinensis-l
#11
Ruilun Zheng, Cui Li, Guoxin Sun, Zubin Xie, Jie Chen, Juying Wu, Qinghai Wang
Biochar produced from rice straw (RC) and maize stalk (MC) was amended to the heavy metal-contaminated soil to investigate the effects of different biochar feedstock and particle size (fine, moderate, coarse) on the accumulation of Cd, Zn, Pb, and As in Brassica chinensis L. (Chinese cabbage). The concentrations of Cd, Zn, and Pb in shoot were decreased by up to 57, 75, and 63%, respectively, after biochar addition (4%). Only MC decreased As concentration in B. chinensis L. shoots by up to 61%. Biochar treatments significantly decreased NH4NO3-extractable concentrations of Cd, Zn, and Pb in soil by 47-62, 33-66, and 38-71%, respectively, yet increased that of As by up to 147%...
August 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28799134/roles-of-polar-groups-and-aromatic-structures-of-biochar-in-1-methyl-3-octylimidazolium-chloride-ionic-liquid-adsorption-ph-effect-and-thermodynamics-study
#12
Qiuci Miao, Erping Bi, Binghua Li
Adsorption mechanisms of 1-methyl-3-octylimidazolium chloride ([OMIM]Cl) on rice straw-derived biochars produced at 400, 500, and 700 °C (referred as RB400, RB500, and RB700, respectively) were evaluated. Adsorption affinity followed the order of RB700 > RB400 > RB500. Electrostatic attraction and hydrogen bond controlled adsorption of [OMIM]Cl on RB400, while π-π EDA interaction between [OMIM]Cl and the aromatic rings of biochar dominated adsorption of RB500 and RB700. With increasing solution pH, -COOH and -OH on biochar became deprotonated...
August 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28797146/qualitative-and-quantitative-characterisation-of-adsorption-mechanisms-of-lead-on-four-biochars
#13
Zhengtao Shen, Yiyun Zhang, Fei Jin, Oliver McMillan, Abir Al-Tabbaa
The adsorption mechanisms of lead (Pb(2+)) on four biochars (SB produced from British hardwood at 600°C and three standard biochars produced from wheat straw pellets at 700°C (WSP700), rice husk at 700°C (RH700) and soft wood pellets at 550°C (SWP550)) were characterised qualitatively and quantitatively, using a combination of chemical and micro-structural methods. Sequential extraction test results show that Pb(2+) was predominantly adsorbed on SB (85.31%), WSP700 (75.61%) and RH700 (85.76%) as acidic soluble fraction, which was potentially bioavailable if applied in soil...
August 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28797118/effect-of-trichoderma-enriched-organic-charcoal-in-the-integrated-wood-protection-strategy
#14
Javier Ribera, Mónica Gandía, Jose F Marcos, Maria Del Carmen Bas, Siegfried Fink, Francis W M R Schwarze
The gradual elimination of chromium from wood preservative formulations results in higher Cu leaching and increased susceptibility to wood decay fungi. Finding a sustainable strategy in wood protection has become of great interest among researchers. The objective of these in vitro studies was to demonstrate the effect of T-720-enriched organic charcoal (biochar) against five wood decay basidiomycetes isolated from strongly damaged poles. For this purpose, the antagonistic potential of Trichoderma harzianum (strain T-720) was confirmed among other four Trichoderma spp...
2017: PloS One
https://www.readbyqxmd.com/read/28792530/sorption-of-tetracycline-on-biochar-derived-from-rice-straw-under-different-temperatures
#15
Hua Wang, Yixuan Chu, Chengran Fang, Fang Huang, Yali Song, Xiangdong Xue
Biochars produced from the pyrolysis of waste biomass under limited oxygen conditions could serve as adsorbents in environmental remediation processes. Biochar samples derived from rice straw that were pyrolyzed at 300 (R300), 500 (R500) and 700°C (R700) were used as adsorbents to remove tetracycline from an aqueous solution. Both the Langmuir and Freundlich models fitted the adsorption data well (R2 > 0.919). The adsorption capacity increased with pyrolysis temperature. The R500 and R700 samples exhibited relative high removal efficiencies across a range of initial tetracycline concentrations (0...
2017: PloS One
https://www.readbyqxmd.com/read/28791597/biochar-increased-photosynthetic-and-accessory-pigments-in-tomato-solanum-lycopersicum-l-plants-by-reducing-cadmium-concentration-under-various-irrigation-waters
#16
Muhammad Abid, Subhan Danish, Muhammad Zafar-Ul-Hye, Muhammad Shaaban, Muhammad Mutahir Iqbal, Abdur Rehim, Muhammad Farooq Qayyum, Muhammad Nadir Naqqash
Fresh surface water supplies are gradually becoming insufficient in arid and semi-arid regions of the world. Thus, farmers in these areas are being forced to use poor quality sewage water. Irrigating vegetable crops with sewage water having high metal concentration may affect growth and biochemical processes of plants. Biochar (BC) can sorb these metals and may reduce their toxic effects on plants. Thus, a greenhouse experiment was conducted to study the influence of cotton stalks derived biochar (CSDB) at control (0%) and 1%; ground water (GW; 0...
August 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28789905/biochar-based-removal-of-antibiotic-sulfonamides-and-tetracyclines-in-aquatic-environments-a-critical-review
#17
REVIEW
Chathuri Peiris, Sameera R Gunatilake, Todd E Mlsna, Dinesh Mohan, Meththika Vithanage
Utilization of biochar (BC) as a low cost adsorbent for water remediation has gained an immense research interest due to their surface functionality and porosity. Although many reports on the BC based sorptive removal of Sulfonamides (SA) and Tetracyclines (TC) are available in literature, a deep insight into sorption mechanisms is yet to be reviewed. Objective of this review is to fill the research gap of a methodological understanding of sorption mechanisms and characteristics which is essential to develop efficient methods for contaminant removal...
July 27, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28783901/chloramphenicol-interaction-with-functionalized-biochar-in-water-sorptive-mechanism-molecular-imprinting-effect-and-repeatable-application
#18
Mohammad Boshir Ahmed, John L Zhou, Huu Hao Ngo, Wenshan Guo, Md Abu Hasan Johir, Kireesan Sornalingam, M Sahedur Rahman
Biochar and functionalized biochar (fBC-1 and fBC-2) were prepared and applied to remove antibiotic chloramphenicol from deionized water, lake water and synthetic wastewater. Results showed that chloramphenicol removal on biochar was pH dependent and maximum sorption occurred at pH4.0-4.5. The sorption data of chloramphenicol fitted better with the Langmuir isotherm model than the Freundlich isotherm model with the maximum Langmuir sorption capacity of 233μMg(-1) using fBC-2. Chloramphenicol sorption on fBC-2 followed the trend: deionized water>lake water>synthetic wastewater...
July 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28783800/application-method-and-biochar-type-affect-petroleum-hydrocarbon-degradation-in-northern-landfarms
#19
Erin M Karppinen, Steven D Siciliano, Katherine J Stewart
To integrate biochar as a practical and successful remedial amendment at northern landfarms, components of its formulation and application must be optimized for site-specific environmental conditions. Different biochar amendments were applied to petroleum hydrocarbon (PHC)-contaminated soil at two northern field sites (Iqaluit and Whitehorse) and in a laboratory study at -5°C to determine the effects of application method (injection or incorporation) and biochar type (wood, fishmeal, bonemeal, and/or compost) on PHC degradation and associated soil properties...
July 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28783796/metal-immobilization-on-wood-derived-biochars-distribution-and-reactivity-of-carbonate-phases
#20
Frédéric Rees, Françoise Watteau, Sandrine Mathieu, Marie-Pierre Turpault, Yann Le Brech, Rongliang Qiu, Jean Louis Morel
Metals can be immobilized on biochars by precipitation with carbonate. The distribution of metal-carbonate phases at the surface of biochars and the conditions of their formation, however, are unknown. Electron microscopy and X-photon spectroscopy were used to characterize carbonate phases in various morphological groups of particles of a wood-derived biochar, both before and after a metal-sorption experiment. Our results showed that the distribution of metals at the surface of biochar particles depended on the corresponding wood tissues and the presence of carbonate phases...
July 2017: Journal of Environmental Quality
keyword
keyword
46556
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"