Drum composting of nitrogen-rich Hydrilla Verticillata with carbon-rich agents: Effects on composting physics and kinetics

被引:28
作者
Jain, Mayur Shirish [1 ]
Kalamdhad, Ajay S. [1 ]
机构
[1] Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati 781039, Assam, India
关键词
Carbon-rich agents; Degradation kinetics; Composting physics; Bulk density; OXYGEN-UPTAKE RATE; PIG MANURE; BULKING AGENT; MOISTURE-CONTENT; ORGANIC-MATTER; PARTICLE-SIZE; FOOD-WASTE; DEGRADATION; MIXTURES; SLUDGE;
D O I
10.1016/j.jenvman.2018.10.111
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Composting of the Hydrilla verticillata, an invasive aquatic weed, signifies aquatic waste management as a safe and hygienic method that produces a nutrient-rich end product, i.e., compost. However, its higher moisture content, higher N-losses, and lower degradation rate have shown negative impacts on the composting process. Therefore the primary objective of this study was to assess the composting physics and the degradation kinetics after addition of three different carbon-rich agents with Hydrilla verticillata. To pursue this objective, three carbon-rich agents (viz. dry leaves in Run A, grass clippings in Run B and wood chips in Run C) each were mixed (10% w/w) to the optimized control mixture of Hydrilla verticillata, cow dung and sawdust (8:1:1) as reported in the earlier study. The composting experiments were performed in 550L rotary drum composter for 20 days to evaluate variation in physical, chemical, nutritional properties as well as degradation kinetics. The Run A and Run B were the only two mixtures that attained the temperature (55-70 degrees C) that indicates standard sterilization capacity in both with maximum moisture reduction (17%) and total Kjeldahl N increment (48%) in the latter. Organic matter losses throughout the process followed a first-order kinetic equation in all the Run (A-C) and control with the higher loss in Run B whereas least in control. Nevertheless, the addition of all carbon-rich agents is found to be beneficial to improve composting physics. Amongst all Runs (A-C), Run B achieved maximum reduction in the initial value of bulk density (64%) and increment in the initial value of free air space (20%). The study also concluded that all the carbon-rich agents have produced compost with the nutritional concentration suitable for agricultural proposes.
引用
收藏
页码:770 / 779
页数:10
相关论文
共 68 条
[1]   Characterization of food waste and bulking agents for composting [J].
Adhikari, Bijaya K. ;
Barrington, Suzelle ;
Martinez, Jose ;
King, Susan .
WASTE MANAGEMENT, 2008, 28 (05) :795-804
[2]  
Agnew JM, 2003, COMPOST SCI UTIL, V11, P238
[3]   High rate composting of herbal pharmaceutical industry solid waste [J].
Ali, M. ;
Duba, K. S. ;
Kalamdhad, A. S. ;
Bhatia, A. ;
Khursheed, A. ;
Kazmi, A. A. ;
Ahmed, N. .
WATER SCIENCE AND TECHNOLOGY, 2012, 65 (10) :1817-1825
[4]  
[Anonymous], SRS28 USDA FOR SERV
[5]  
[Anonymous], 2018, BIORESOURCE TECHNOL, DOI DOI 10.1016/J.BITEB.2018.03.001
[6]   Composting anaerobic and aerobic sewage sludges using two proportions of sawdust [J].
Banegas, V. ;
Moreno, J. L. ;
Moreno, J. I. ;
Garcia, C. ;
Leon, G. ;
Hernandez, T. .
WASTE MANAGEMENT, 2007, 27 (10) :1317-1327
[7]   Theoretical analysis of the kinetic performance of laboratory- and full-scale composting systems [J].
Baptista, Marco ;
Silveira, Ana ;
Antunes, Fernando .
WASTE MANAGEMENT & RESEARCH, 2012, 30 (07) :700-707
[8]   Prediction of temperature and thermal inertia effect in the maturation stage and stockpiling of a large composting mass [J].
Barrena, R. ;
Canovas, C. ;
Sanchez, A. .
WASTE MANAGEMENT, 2006, 26 (09) :953-959
[9]   Chemical and physical properties of pruning waste compost and their seasonal variability [J].
Benito, Marta ;
Masaguer, Alberto ;
Moliner, Ana ;
De Antonio, Roberto .
BIORESOURCE TECHNOLOGY, 2006, 97 (16) :2071-2076
[10]   Composting of animal manures and chemical criteria for compost maturity assessment. A review [J].
Bernal, M. P. ;
Alburquerque, J. A. ;
Moral, R. .
BIORESOURCE TECHNOLOGY, 2009, 100 (22) :5444-5453