« Previous AbstractStructural elucidation and physicochemical properties of litchi polysaccharide with the promoting effect on exopolysaccharide production by Weissella confusa    Next Abstract"[Sex pheromone secondary components of Indian meal moth Plodia interpunctella in China. HU wenlil 2, DU]" »

J Hazard Mater

Title:		Use of potassium dihydrogen phosphate and sawdust as adsorbents of ammoniacal nitrogen in aerobic composting process
Author(s):		Hu TJ; Zeng GM; Huang DL; Yu HY; Jiang XY; Dai F; Huang GH;
Address:		"Department of Environmental Science and Engineering, Hunan University, Changsha 410082, China"
Journal Title:		J Hazard Mater
Year:		2007
Volume:		20060721
Issue:		3
Page Number:		736 - 744
DOI:		10.1016/j.jhazmat.2006.07.027
ISSN/ISBN:		0304-3894 (Print) 0304-3894 (Linking)
Abstract:		"Three kinds of adsorbents-potassium dihydrogen phosphate, sawdust and mixture of potassium dihydrogen phosphate and sawdust were added respectively into composting to investigate their adsorption effect on ammonia. The experimental results showed that all the adsorbents could restrain ammonia volatilizing, with the sorption of potassium dihydrogen phosphate adsorbents being the best of all, the sorption of mixture adsorbent with potassium dihydrogen phosphate and sawdust being the second and the sorption of sawdust adsorbent being the last. Therefore, the total nitrogen loss ratios respectively reduced from 38% to 13%, 15% and 21% after adding these three kinds of adsorbents into composting. However, potassium dihydrogen phosphate produced negative influence on composting properties as its supplemented amount exceeded a quantity basis equivalent to 18% of total nitrogen in the composting, for example: pH value had been lessened, microorganism activity reduced, which finally resulted in the reduction of biodegradation ratio of organic matter. But it did not result in these problems when using the mixture of potassium dihydrogen phosphate and sawdust as adsorbent, in which the amount of potassium dihydrogen phosphate was under a quantity basis equivalent to 6% of total nitrogen in the composting. Moreover, the mixture adsorbent produced better adsorption effect on ammonia, and raised biodegradation ratio of organic matter from 26% to 33%"
Keywords:		Adsorption Aerobiosis Ammonia/*chemistry Bioreactors *Dust Nitrogen/chemistry/metabolism Phosphates/*chemistry Potassium Compounds/*chemistry Refuse Disposal/*methods *Soil Wood;
Notes:		"MedlineHu, Tian-Jue Zeng, Guang-Ming Huang, Dan-Lian Yu, Hong-Yan Jiang, Xiao-Yun Dai, Fang Huang, Guo-He eng Research Support, Non-U.S. Gov't Netherlands 2006/09/05 J Hazard Mater. 2007 Mar 22; 141(3):736-44. doi: 10.1016/j.jhazmat.2006.07.027. Epub 2006 Jul 21"