Resource Type

Journal Article 7

Year

2020 1

2017 1

2016 3

2012 1

2007 1

Keywords

16S rRNA gene clone library 1

17β-estradiol (E2) 1

Arsenic 1

Biolog 1

Earthworms 1

Field experiment 1

Green waste 1

Iron oxide 1

Nutrient recovery 1

Stabilization 1

Sugarcane bagasse 1

Vermicomposting 1

Wood preservation sites 1

adsorption 1

amendment 1

cotton straw 1

definite ductility 1

degradation 1

dissolved organic carbon 1

open ︾

Search scope:

排序： Display mode:

Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0842-1

Abstract: To evaluate the full scale amendment a 100 m test site and a control site (without amendment) were monitoredOur field scale amendment of contaminated soil was overall successful in decreasing leaching of As, Cr

Keywords： Field experiment     Iron oxide     Arsenic     Stabilization     Wood preservation sites    

HTML PDF Collect

China’s Ministry of Environmental Protection Adopted Draft Amendment to the Law on Prevention and Control

Fu Sun,Yi Liu

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0890-6

HTML PDF Collect

Sugarcane bagasse amendment improves the quality of green waste vermicompost and the growth of

Linlin Cai, Xiangyang Sun, Dan Hao, Suyan Li, Xiaoqiang Gong, Hao Ding, Kefei Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1240-2

Abstract: •Earthworms were able to convert green waste into more plant-available nutrients. •The part of heavy metals content increased in the compost added by earthworm. •The addition of SCB to GW did enhance earthworm biomass and humic acid content. •The resulting vermicomposts were characterized by neutral pH and lower EC value. Vermicomposting is a feasible method for disposing of lignocellulosic waste while generating a useful product. The current study assessed the potential of vermicomposting green waste mixed with sugarcane bagasse in proportions of 25%, 50%, and 75% (v:v, based on dry weight). The suitability was evaluated based on the agrochemical properties, earthworm biomass, and phytotoxicity. The final vermicomposts exhibited near-neutral pH values (7.1–7.6), and lower EC values (0.43–0.72 mS/cm) and C:N ratios (14.1–19.9).The content of available nutrients and CEC for all the vermicomposts exceeded those of the control compost (without earthworms). For vermicomposts, the average values of NO3–-N, AP, AK, and CEC were 53, 517, 1362 mg/kg, and 158 cmol/kg, respectively. The total contents of heavy metals increased in all vermicompost treatments compared to control composts with the following average final percentages: Zn (2.0%), Cr (15.5%), Pb (23.4%), and Cu (44.3%), but these amounts were safe for application in agroforestry. The addition of sugarcane bagasse to green waste significantly increased the content of total humic substance, humic acid and urease activity, acid and alkaline phosphatase activity, and Eiseniafetida reproduction. The addition of 25% sugarcane bagasse to green waste decreased the toxicity to germinating seeds. These results revealed that vermicomposting is a feasible way to degrade green waste into a value-added chemical product.

Keywords： Green waste     Earthworms     Sugarcane bagasse     Vermicomposting     Nutrient recovery    

HTML PDF Collect

Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 208-219 doi: 10.15302/J-FASE-2017138

Abstract: Most animals, including humans, produce natural sex hormones such as estrogens: 17β-estradiol (E2) and estrone (E1). These compounds are able to disrupt the reproductive systems of living organisms at trace concentrations (ng·L ). This experiment tests the hypothesis that 1% slow pyrolysis biochar-amended sandy soil could retain significant amount of estrogens (E1, E2) from poultry manure in its second year of application. The experiment was conducted over 46 days and consisted of a series of lysimeters containing sandy soil with biochar-amended topsoil. The application rate of poultry manure was kept at 2.47 kg·m . The biochar held a significant concentration of hormone during the first year of its application. However, in the following year (current study), there was no significant retention of hormones in the biochar-amended soil. During the first year after application, the biochar was fresh, so its pores were available for hydrophobic interactions and held significant concentration of hormones. As time passed there were several biotic and abiotic changes on the surface of the biochar so that after some physical fragmentation, pores on the surface were no longer available for hydrophobic interactions. The biochar started releasing dissolved organic carbon, which facilitated greater mobility of hormones from poultry manure down the soil profile.

Keywords： adsorption     degradation     dissolved organic carbon     17β-estradiol (E2)     estrone (E1)    

HTML PDF Collect

Effects of cotton straw amendment on soil fertility and microbial communities

Wuren HUANG, Zhihui BAI, Daniel HOEFEL, Qing HU, Xin LV, Guoqiang ZHUANG, Shengjun XU, Hongyan QI, Hongxun ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 336-349 doi: 10.1007/s11783-011-0337-z

Abstract: However, little is known about the utilization of cotton straw for soil amendment.phylogenetic analysis of soil bacteria revealed - Proteobacteria sequences dominated the cotton straw amendmentOn the contrary, the Sphingobacteria (7.8%) and Verrucomicrobia (2.4%) in the cotton straw amendment

Keywords： cotton straw     soil amendments     microbial diversity     Biolog     phospholipid fatty acid     16S rRNA gene clone library    

HTML PDF Collect

Dynamic analyses of steel-reinforced super high-strength concrete columns

JIA Jinqing, JIANG Rui, XU Shilang, HOU Tong

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 240-246 doi: 10.1007/s11709-007-0030-2

Abstract: These values were suggested as references of engineering applications and of the amendment of the current

Keywords： amendment     flexural-shear     force-displacement hysteretic     definite ductility     skeleton    

HTML PDF Collect

The Obligation of Decryption Assistance by Internet Service Providers: Suggestions on the Amendment of

Cui Congcong,Li Yuxiao and Han Song

Strategic Study of CAE 2016, Volume 18, Issue 6,   Pages 34-38 doi: 10.15302/J-SSCAE-2016.06.007

Abstract:

The obligation of decryption assistance by Internet service providers reflects the conflict between public power (the power of investigation) and the right of privacy (the right of communication privacy, private rights). Internet service providers should gather data under encryption by users on the basis of the principles of controllability and traceability, proportionality, and necessity. Providers should consider choosing their path prudently, supervised by strict procedure. Thus, the overall utility of social governance control, the tranquility of private life, and the business interests of Internet service providers can be maximized. Severe violations of private rights and disorderly situations due to governmental failure can be avoided if these suggestions are carried out.

Keywords： obligation of decryption assistance     principle of necessity     principle of proportionality     principle of controllability and traceability     remedy measures    

HTML PDF Collect

Title Author Date Type Operation

Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

Journal Article

China’s Ministry of Environmental Protection Adopted Draft Amendment to the Law on Prevention and Control

Fu Sun,Yi Liu

Journal Article

Sugarcane bagasse amendment improves the quality of green waste vermicompost and the growth of

Linlin Cai, Xiangyang Sun, Dan Hao, Suyan Li, Xiaoqiang Gong, Hao Ding, Kefei Yu

Journal Article

Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Journal Article

Effects of cotton straw amendment on soil fertility and microbial communities

Wuren HUANG, Zhihui BAI, Daniel HOEFEL, Qing HU, Xin LV, Guoqiang ZHUANG, Shengjun XU, Hongyan QI, Hongxun ZHANG

Journal Article

Dynamic analyses of steel-reinforced super high-strength concrete columns

JIA Jinqing, JIANG Rui, XU Shilang, HOU Tong

Journal Article

The Obligation of Decryption Assistance by Internet Service Providers: Suggestions on the Amendment of

Cui Congcong,Li Yuxiao and Han Song

Journal Article