Sewage Sludge Biochar Influence upon Rice (Oryza sativaL) Yield, Metal Bioaccumulation and Greenhouse Gas Emissions from Acidic Paddy Soil

2013 ◽  
Vol 47 (15) ◽  
pp. 8624-8632 ◽  
Author(s):  
Sardar Khan ◽  
Cai Chao ◽  
Muhammad Waqas ◽  
Hans Peter H. Arp ◽  
Yong-Guan Zhu
Keyword(s):  
Sewage Sludge ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Paddy Soil ◽  
Metal Bioaccumulation ◽  
Gas Emissions

scholarly journals Effect of Chinese Milk Vetch (Astragalus sinicus L.) and Rice Straw Incorporated in Paddy Soil on Greenhouse Gas Emission and Soil Properties

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 717
Author(s):  
Qiaoying Ma ◽  
Jiwei Li ◽  
Muhammad Aamer ◽  
Guoqin Huang
Keyword(s):  
Greenhouse Gases ◽  
Soil Properties ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Rice Straw ◽  
Paddy Soil ◽  
Chemical Fertilizer ◽  
N2o Emissions ◽  
Gas Emissions ◽  
Chinese Milk Vetch

Paddy soil is an important emission source of agricultural greenhouse gases. The excessive application of chemical fertilizer to paddy soil is one of the important reasons for high greenhouse gas emissions. Emissions can be reduced through optimized agricultural management measures. The incorporation of Chinese milk vetch (CMV) and rice straw in the field to replace some of the chemical fertilizer can reduce the emissions of greenhouse gases, but the relationship between these emissions and soil properties after the incorporation of CMV and rice straw is unclear. Through the continuous determination of greenhouse gases and the physical and chemical properties of soil, it was found that the addition of CMV and straw could increase the emissions of methane (CH4) and carbon dioxide (CO2), but nitrous oxide (N2O) emissions were lower. The effect of the combined incorporating of CMV and rice straw on soil properties was more significant than CMV alone. It was also found that CH4 and CO2 emissions were positively correlated with microbial biomass carbon and nitrogen, pH, and soil catalase and β-xylosidase activities. In practice, we can reduce greenhouse gas emissions by water and fertilizer management.

scholarly journals Sewage sludge treatment: evaluation of the energy potential and methane emissions with COD balancing

2015 ◽  
Vol 5 (4) ◽  
pp. 437-445 ◽  
Author(s):  
C. Schaum ◽  
D. Lensch ◽  
P.-Y. Bolle ◽  
P. Cornel
Keyword(s):  
Sewage Sludge ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Electricity Generation ◽  
Methane Emissions ◽  
Anaerobic Sludge ◽  
Sludge Treatment ◽  
Gas Emissions ◽  
Dissolved Methane ◽  
Methane Slip

Sewage sludge is an important resource for the generation of electricity and heat within a wastewater treatment plant (WWTP). Taking a holistic approach to such use involves considering the greenhouse gas emissions. In particular, for anaerobic sludge treatment, methane emissions are a matter of concern. Therefore, the utilization of a carbon balance, based on the chemical oxygen demand (COD), will be a focus for evaluating the magnitude of methane losses within the sludge treatment. In addition to biogas production and use in combined heat and power plants (CHPs), dissolved methane in digested sludge, as well as the methane slip, have to be considered. Measurements of dissolved methane concentrations in sewage sludge from digesters of various WWTPs show a concentration of about 17–37 mg CH4/L. The COD balance indicates a ratio of the methane emissions (methane slip, dissolved methane and residual gas) of < 4% of the total methane production during digestion. Considering the electricity generation by CHPs and the higher global warming potential of methane, compared to carbon dioxide, emissions of approximately 300 g CO2-equ./kWhel result, which is in a similar range to greenhouse gas emissions caused by electricity generation by fossil fuels.

Biochar amendment of chromium-polluted paddy soil suppresses greenhouse gas emissions and decreases chromium uptake by rice grain

2018 ◽  
Vol 19 (4) ◽  
pp. 1756-1766 ◽  
Author(s):  
Jiangmin Zhou ◽  
Hualin Chen ◽  
Yueliang Tao ◽  
Ronald W. Thring ◽  
Jianliang Mao
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Paddy Soil ◽  
Rice Grain ◽  
Gas Emissions ◽  
Chromium Uptake ◽  
Biochar Amendment

Influence of zeolite and lime as additives on greenhouse gas emissions and maturity evolution during sewage sludge composting

2016 ◽  
Vol 216 ◽  
pp. 172-181 ◽  
Author(s):  
Mukesh Kumar Awasthi ◽  
Quan Wang ◽  
Hui Huang ◽  
Xiuna Ren ◽  
Altaf Hussain Lahori ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
Sludge Composting
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