keyword
MENU ▼
Read by QxMD icon Read
search

Biochar

keyword
https://www.readbyqxmd.com/read/28226259/synthesis-optimization-of-oil-palm-empty-fruit-bunch-and-rice-husk-biochars-for-removal-of-imazapic-and-imazapyr-herbicides
#1
Saba Yavari, Amirhossein Malakahmad, Nasiman B Sapari, Sara Yavari
Imidazolinones are a family of herbicides that are used to control a broad range of weeds. Their high persistence and leaching potential make them probable risk to the ecosystems. In this study, biochar, the biomass-derived solid material, was produced from oil palm empty fruit bunches (EFB) and rice husk (RH) through pyrolysis process. Feedstock and pyrolysis variables can control biochar sorption capacity. Therefore, the present study attempts to evaluate effects of three pyrolysis variables (temperature, heating rate and retention time) on abilities of biochars for removal of imazapic and imazapyr herbicides from soil...
February 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28199946/bioavailability-and-bioaccessibility-of-polycyclic-aromatic-hydrocarbons-from-post-pyrolytically-treated-biochars
#2
Isabel Hilber, Philipp Mayer, Varvara Gouliarmou, Sarah E Hale, Gerard Cornelissen, Hans-Peter Schmidt, Thomas D Bucheli
Bioaccessibility data of PAHs from biochar produced under real world conditions is scarce and the influence of feedstock and various post-pyrolysis treatments common in agriculture, such as co-composting or lacto-fermentation to produce silage fodder, on their bioavailability and bioaccessibility has hardly been studied. The total (Ctotal), and freely dissolved (i.e., bioavailable) concentrations (Cfree) of the sum of 16 US EPA PAHs of 43 biochar samples produced and treated in such ways ranged from 0.4 to almost 2000 mg/kg, and from 12 to 81 ng/L, respectively, which resulted in very high biochar-water partition coefficients (4...
February 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28199354/nitrate-capture-and-slow-release-in-biochar-amended-compost-and-soil
#3
Nikolas Hagemann, Claudia I Kammann, Hans-Peter Schmidt, Andreas Kappler, Sebastian Behrens
Slow release of nitrate by charred organic matter used as a soil amendment (i.e. biochar) was recently suggested as potential mechanism of nutrient delivery to plants which may explain some agronomic benefits of biochar. So far, isolated soil-aged and composted biochar particles were shown to release considerable amounts of nitrate only in extended (>1 h) extractions ("slow release"). In this study, we quantified nitrate and ammonium release by biochar-amended soil and compost during up to 167 h of repeated extractions in up to six consecutive steps to determine the effect of biochar on the overall mineral nitrogen retention...
2017: PloS One
https://www.readbyqxmd.com/read/28196780/evaluating-the-effectiveness-of-various-biochars-as-porous-media-for-biodiesel-synthesis-via-pseudo-catalytic-transesterification
#4
Jechan Lee, Jong-Min Jung, Jeong-Ik Oh, Yong Sik Ok, Sang-Ryong Lee, Eilhann E Kwon
This study focuses on investigating the optimized chemical composition of biochar used as porous material for biodiesel synthesis via pseudo-catalytic transesterification. To this end, six biochars from different sources were prepared and biodiesel yield obtained from pseudo-catalytic transesterification of waste cooking oil using six biochars were measured. Biodiesel yield and optimal reaction temperature for pseudo-catalytic transesterification were strongly dependent on the raw material of biochar. For example, biochar generated from maize residue exhibited the best performance, which yield was reached ∼90% at 300°C; however, the maximum biodiesel yield with pine cone biochar was 43% at 380°C...
February 3, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28193592/heavy-metal-immobilization-and-microbial-community-abundance-by-vegetable-waste-and-pine-cone-biochar-of-agricultural-soils
#5
Avanthi Deshani Igalavithana, Sung-Eun Lee, Young Han Lee, Daniel C W Tsang, Jörg Rinklebe, Eilhann E Kwon, Yong Sik Ok
In order to determine the efficacy of vegetable waste and pine cone biochar for immobilization of metal/metalloid (lead and arsenic) and abundance of microbial community in different agricultural soils, we applied the biochar produced at two different temperatures to two contaminated soils. Biochar was produced by vegetable waste, pine cone, and their mixture (1:1 ww(-1)) at 200 °C (torrefied biomass) and 500 °C (biochar). Contaminated soils were incubated with 5% (ww(-1)) torrefied biomass or biochar. Sequential extraction, thermodynamic modeling, and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy were used to evaluate the metal immobilization...
February 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28193587/the-effects-of-rice-straw-biochar-on-indigenous-microbial-community-and-enzymes-activity-in-heavy-metal-contaminated-sediment
#6
Danlian Huang, Linshan Liu, Guangming Zeng, Piao Xu, Chao Huang, Linjing Deng, Rongzhong Wang, Jia Wan
Owning to the potential in carbon sequestration and other environmental benefits, biochar has been widely used for in-situ environmental remediation. Understanding the biological effects of biochar is essential. The goal of this study was to explore the response of indigenous microbes under the stress of different concentrations of biochar. The results showed that biochar could significantly change physicochemical properties, enzymes activity and microbial community composition depending on biochar concentration and incubation time...
January 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/28192351/application-of-coupled-zero-valent-iron-biochar-system-for-degradation-of-chlorobenzene-contaminated-groundwater
#7
Xu Zhang, Yanqing Wu
A novel iron-carbon micro-electrolysis system, bamboo-derived biochar coupled with zero-valent iron (ZVI), was investigated for chlorobenzene (CB)-contaminated groundwater removal. Influences of initial pH value, mass ratio of the ZVI/Biochar, initial CB concentration and ionic strength of the ZVI/Biochar micro-electrolysis were studied. The results indicated that the increase of initial pH led to the decrease of the CB removal efficiency. While the optimum mass ratio of ZVI to biochar was 2:1, the improved initial concentration and reaction time were 33...
February 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28188986/effects-of-biochar-and-wood-pellets-amendments-added-to-landfill-cover-soil-on-microbial-methane-oxidation-a-laboratory-column-study
#8
Erin N Yargicoglu, Krishna R Reddy
Alternate landfill covers designed to enhance microbial methane (CH4) oxidation and reduce the negative impacts of landfill gas emissions on global climate have recently been proposed and investigated. In this study, the use of biochar as a soil amendment is examined in order to assess the feasibility and effectiveness for enhanced CH4 removal in landfill covers when incorporated under high compaction conditions and relatively low soil moisture. Four different cover configurations were tested in large soil columns for ∼510 days and potential CH4 oxidation rates were determined following long-term incubation in small batch assays...
February 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28183027/effect-of-biochars-produced-from-solid-organic-municipal-waste-on-soil-quality-parameters
#9
P Randolph, R R Bansode, O A Hassan, Dj Rehrah, R Ravella, M R Reddy, D W Watts, J M Novak, M Ahmedna
New value-added uses for solid municipal waste are needed for environmental and economic sustainability. Fortunately, value-added biochars can be produced from mixed solid waste, thereby addressing solid waste management issues, and enabling long-term carbon sequestration. We hypothesize that soil deficiencies can be remedied by the application of municipal waste-based biochars. Select municipal organic wastes (newspaper, cardboard, woodchips and landscaping residues) individually or in a 25% blend of all four waste streams were used as feedstocks of biochars...
February 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28177416/effects-of-biochar-on-dispersibility-of-colloids-in-agricultural-soils
#10
K G I D Kumari, Per Moldrup, Marcos Paradelo, Lars Elsgaard, Lis W de Jonge
The mobility of water-dispersible colloids (WDCs) in soil may be influenced by soil management practices such as organic soil amendments. Biochar has recently been promoted as a useful soil amendment, and extensive research has been devoted to investigating its effects on soil macroscopic properties and functions. However, there is limited understanding of the effects of biochar application on micro-scale particle dynamics. We conducted a field study to investigate the effects of the application of birch ( spp...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28177405/biochar-impacts-on-crop-productivity-and-greenhouse-gas-emissions-from-an-andosol
#11
Nobuhisa Koga, Seiji Shimoda, Yukiyoshi Iwata
To assess the impacts of biochar application on crop productivity and global warming mitigation, a 4-yr field experiment was conducted in a well-drained Andosol in northern Japan. Wood residue-derived biochar (pyrolyzed at >800°C) was applied at rates of 0, 10, 20, and 40 Mg ha for potatoes, winter wheat, sugar beet, and soybeans cultivated in rotation, and CO, NO, and CH emissions from the soil and yield and quality of the harvested materials were measured. Biochar application, regardless of rate, had no significant impact on yield and quality of the harvested materials, except for soybean grain yield...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28169988/chemolithotrophic-processes-in-the-bacterial-communities-on-the-surface-of-mineral-enriched-biochars
#12
Jun Ye, Stephen D Joseph, Mukan Ji, Shaun Nielsen, David R G Mitchell, Scott Donne, Joseph Horvat, Jianli Wang, Paul Munroe, Torsten Thomas
Biochar and mineral-enriched biochar (MEB) have been used as soil amendments to improve soil fertility, sequester carbon and mitigate greenhouse gas emissions. Such beneficial outcomes could be partially mediated by soil bacteria, however little is known about how they directly interact with biochar or MEB. We therefore analyzed the diversity and functions of bacterial communities on the surfaces of one biochar and two different MEBs after a 140-day incubation in soil. The results show that the biochar and the MEBs harbor distinct bacterial communities to the bulk soil...
February 7, 2017: ISME Journal
https://www.readbyqxmd.com/read/28169083/evaluation-of-biochar-amended-biosolids-co-composting-to-improve-the-nutrient-transformation-and-its-correlation-as-a-function-for-the-production-of-nutrient-rich-compost
#13
Mukesh Kumar Awasthi, Quan Wang, Hongyu Chen, Meijing Wang, Xiuna Ren, Junchao Zhao, Jiao Li, Di Guo, Dong-Sheng Li, Sanjeev Kumar Awasthi, Xining Sun, Zengqiang Zhang
The influence of biochar amended dewatered fresh sewage sludge (DFSS)-wheat straw co-composting on nutrients transformation and end products quality was investigated. This is the first study to examine the biochar applied compost quality with different kgha(-1) TKN on Brassica rapa L. growth. Seven mixtures were composted over 8-weeks period in 130-L reactor using the same DFSS with different concentration of biochar (2%, 4%, 6%, 8%, 12% and 18% on dry weight basis) and without additive added treatment served as control...
January 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28168830/degradation-of-dimethyl-disulfide-in-soil-with-or-without-biochar-amendment
#14
Dawei Han, Dongdong Yan, Aocheng Cao, Wensheng Fang, Pengfei Liu, Yuan Li, Canbin Ouyang, Qiuxia Wang
BACKGROUND: Dimethyl disulfide (DMDS) is a new and effective alternative to methyl bromide for soil fumigation. The effect of biochar on the fate of DMDS in soil is not fully understood. The objective of this study was to determine the degradation kinetics of DMDS in different soils and evaluate the effect of biochar amendment on DMDS degradation using incubation experiments. RESULTS: The degradation half-life of DMDS was between 1.05 and 6.66 d under non-sterile conditions, and 12...
February 7, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28161864/phosphate-and-ammonium-adsorption-of-the-modified-biochar-based-on-phragmites-australis-after-phytoremediation
#15
Yu-Peng Gong, Zhi-Yi Ni, Zhao-Zhao Xiong, Li-Hua Cheng, Xin-Hua Xu
To effectively remove N and P from eutrophic water, the Phragmites australis after phytoremediation was harvested for preparation of modified biochar. The MgCl2-modified biochar (MPB) was successfully synthesized at 600 °C under N2 circumstance. The physiochemical characteristics, the adsorption capacity for N and P in the simulated solution, and their adsorption mechanism of MPB were then determined, followed by the treatment of eutrophic water of Tai lake and its inflow river from agricultural source. The results demonstrated that the MPB presented high adsorption capacity to both simulated NH4-N and PO4-P with the maximum adsorption capacity exceeding 30 and 100 mg g(-1), respectively...
February 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28161628/application-of-biochar-and-nitrogen-influences-fluxes-of-co2-ch4-and-n2o-in-a-forest-soil
#16
Iain Hawthorne, Mark S Johnson, Rachhpal S Jassal, T Andrew Black, Nicholas J Grant, Sean M Smukler
Nitrogen (N) fertilization of forests for increasing carbon sequestration and wood volume is expected to influence soil greenhouse gas (GHG) emissions, especially to increase N2O emissions. As biochar application is known to affect soil GHG emissions, we investigated the effect of biochar application, with and without N fertilization, to a forest soil on GHG emissions in a controlled laboratory study. We found that biochar application at high (10%) application rates increased CO2 and N2O emissions when applied without urea-N fertilizer...
February 2, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28160678/phenoxy-herbicide-removal-from-aqueous-solutions-using-fast-pyrolysis-switchgrass-biochar
#17
Matthew Essandoh, Daniel Wolgemuth, Charles U Pittman, Dinesh Mohan, Todd Mlsna
The release of herbicides is known to negatively impact humans and the environment. We report the use of a low cost biochar (prepared through fast pyrolysis) to successfully remove phenoxy herbicides from aqueous solutions. The biochar was characterized using: FT-IR, SEM, pHpzc, elemental analysis, and surface area measurements. Sorption experiments were run at pH values from 2 to 10, adsorbate concentrations from 25 to 300 mg/L and temperatures from 25 to 45 °C. Adsorption isotherms were evaluated from 25 to 45 °C using both two parameter (Freundlich and Langmuir) and three parameter (Redlich-Peterson and Toth) adsorption isotherm models...
January 24, 2017: Chemosphere
https://www.readbyqxmd.com/read/28150149/effects-of-maize-stover-and-its-derived-biochar-on-greenhouse-gases-emissions-and-c-budget-of-brown-earth-in-northeast-china
#18
Xu Yang, Yu Lan, Jun Meng, Wenfu Chen, Yuwei Huang, Xiaoyi Cheng, Tianyi He, Ting Cao, Zunqi Liu, Linlin Jiang, Jiping Gao
Concerns regarding rising population levels and the impacts of atmospheric greenhouse gas (GHG) emissions on world climate have encouraged effective alternative methods to increase agricultural production while mitigating climate change. Soil GHG emissions from maize (Zea mays L.) fields treated with stover and a stover-derived biochar amendment during two consecutive maize growing seasons were studied in a brown earth soil type in Liaoning, China. We considered three treatments: CK (basal application of mineral NPK fertilizer; 120 kg N ha(-1), 60 kg P2O5 ha(-1), and 60 kg K2O ha(-1), respectively), ST (maize stover application; 7...
February 1, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28142113/efficiency-of-sewage-sludge-biochar-in-improving-urban-soil-properties-and-promoting-grass-growth
#19
Yan Yue, Liu Cui, Qimei Lin, Guitong Li, Xiaorong Zhao
It is meaningful to quickly improve poor urban soil fertility in order to establish the green land vegetation. In this study, a series rates (0%, 1%, 5%, 10%, 20% and 50%, in mass ratio) of biochar derived from municipal sewage sludge was applied into an urban soil and then turf grass was grown in pots. The results showed that biochar amendment induced significant increases in soil total nitrogen, organic carbon, black carbon, and available phosphorus and potassium by more than 1.5, 1.9, 4.5, 5.6 and 0.4 times, respectively...
January 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28135667/phytoextraction-of-toxic-trace-elements-by-sorghum-bicolor-inoculated-with-streptomyces-pactum-act12-in-contaminated-soils
#20
Amjad Ali, Di Guo, Amanullah Mahar, Ping Wang, Fang Ma, Feng Shen, Ronghua Li, Zengqiang Zhang
The increasing industrial, mining and agricultural activities have intensified the release of potential toxic trace elements (PTEs), which are of great concern to human health and environment. The alarming increase in PTEs concentration, stress the need for biotechnological remediation approaches. In order to assist phytoextraction of PTEs, different combinations of Streptomyces pactum (Act12) with biochar were applied to mining and industrial polluted soils of Shaanxi and Hunan Provinces of China, respectively...
January 27, 2017: Ecotoxicology and Environmental Safety
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"