Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1 may not r...Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1 may not return a profit to the farmer due to the high cost of biochar. In this study biochar was modified through pre-treating the biomass and post-treating with phosphoric acid, minerals and different chemical fertilisers to study the effects of two new enhanced biochar fertilisers on the yield and quality of green pepper in a field experiment with 5 fertilisation treatments and 3 replications. The two new biochar fertilisers significantly （P 〈 0.05） increased the yield of green pepper （11.33-11.47 t ha-l）, compared with the conventional chemical fertiliser （9.72 t ha-l）. The biochar fertiliser treatments improved the vitamin C content of green pepper from 236.99 to 278.28 mg kg-1, and also significantly （P 〈 0.05） reduced the nitrate content from 132.32 to 101.92 mg kg-1, compared with chemical fertiliser. This study indicated that, compared to the use of conventional chemical fertiliser, all of the biochar fertiliser treatments could significantly improve the yield and quality of green pepper.展开更多
Electricity generated through coal-based Thermal Power Plants(TPPs)has played a pivotal role in shaping modern civiliza-tion,revolutionizing industries,and improving the quality of life for billions of people worldwid...Electricity generated through coal-based Thermal Power Plants(TPPs)has played a pivotal role in shaping modern civiliza-tion,revolutionizing industries,and improving the quality of life for billions of people worldwide.These TPPs contribute to about 37%-40%of the global energy requirements.Energy production,in turn,has a direct impact on the economy of any country.Apart from this boon to humankind,these TPPs combusting coal as their primary fuel also have specific environmen-tal impacts,the major ones being water,air,and soil pollution due to unscientific disposal of high-quantity fly ash produced yearly.If we can put this ash to good use,it may assist us in mitigating the pollution caused by it.Although there are many conventional uses of fly ash,such as a pozzolanic material in the cement industry,more pathways need to be discovered to balance the high generation quantities with consumption.Therefore,a detailed description of its use in potential geoliner applications is presented in this article.A geoliner or a landfill liner acts as a virtually impenetrable layer to mitigate the leachate penetration into the underneath subsoil and groundwater,thus preventing contamination.There are presently some studies that support the use of only fly ash in such applications.Nevertheless,the properties of the geoliners using it are not so good to significantly mitigate environmental degradation owing to its high permeability and low densification tendency.The bentonite conventionally used has limited deposits and is mined intensively for its use as a natural sealant.Their depos-its must also be conserved,and an alternative material that may serve similar application benefits,like bentonite,must be selected.The desired aim can be fulfilled if we blend this combustion residue with other suitable materials(such as kaolinite clay)with low permeability.Thus,the article focuses on the possibilities of blending fly ash with different clays for geoliner construction to improve the individual properties of fly ash.This will contrib展开更多
基金financially supported by the Ministry of Science and Technology of China (Nos.2013GB23600666 and 2013BAD11B00)funded by the Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,China+1 种基金supported by the grant of the Australian Research Council (No.LP120200418)Renewed Carbon Pty Ltd.,Australia and the project of DAFF Carbon Farming Futures-Filling the Research Gap,Australia (No.RG134978)
文摘Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1 may not return a profit to the farmer due to the high cost of biochar. In this study biochar was modified through pre-treating the biomass and post-treating with phosphoric acid, minerals and different chemical fertilisers to study the effects of two new enhanced biochar fertilisers on the yield and quality of green pepper in a field experiment with 5 fertilisation treatments and 3 replications. The two new biochar fertilisers significantly （P 〈 0.05） increased the yield of green pepper （11.33-11.47 t ha-l）, compared with the conventional chemical fertiliser （9.72 t ha-l）. The biochar fertiliser treatments improved the vitamin C content of green pepper from 236.99 to 278.28 mg kg-1, and also significantly （P 〈 0.05） reduced the nitrate content from 132.32 to 101.92 mg kg-1, compared with chemical fertiliser. This study indicated that, compared to the use of conventional chemical fertiliser, all of the biochar fertiliser treatments could significantly improve the yield and quality of green pepper.
文摘Electricity generated through coal-based Thermal Power Plants(TPPs)has played a pivotal role in shaping modern civiliza-tion,revolutionizing industries,and improving the quality of life for billions of people worldwide.These TPPs contribute to about 37%-40%of the global energy requirements.Energy production,in turn,has a direct impact on the economy of any country.Apart from this boon to humankind,these TPPs combusting coal as their primary fuel also have specific environmen-tal impacts,the major ones being water,air,and soil pollution due to unscientific disposal of high-quantity fly ash produced yearly.If we can put this ash to good use,it may assist us in mitigating the pollution caused by it.Although there are many conventional uses of fly ash,such as a pozzolanic material in the cement industry,more pathways need to be discovered to balance the high generation quantities with consumption.Therefore,a detailed description of its use in potential geoliner applications is presented in this article.A geoliner or a landfill liner acts as a virtually impenetrable layer to mitigate the leachate penetration into the underneath subsoil and groundwater,thus preventing contamination.There are presently some studies that support the use of only fly ash in such applications.Nevertheless,the properties of the geoliners using it are not so good to significantly mitigate environmental degradation owing to its high permeability and low densification tendency.The bentonite conventionally used has limited deposits and is mined intensively for its use as a natural sealant.Their depos-its must also be conserved,and an alternative material that may serve similar application benefits,like bentonite,must be selected.The desired aim can be fulfilled if we blend this combustion residue with other suitable materials(such as kaolinite clay)with low permeability.Thus,the article focuses on the possibilities of blending fly ash with different clays for geoliner construction to improve the individual properties of fly ash.This will contrib
