Research Initiation:  A Study of the Effect of Chemical     Complexation in Precipitation and Crystallization Processes
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'mary chen', 'PO_EMAI': None, 'PO_PHON': None}
The effect of chemical complexation on the precipitation of metal               cations in a strong acid medium by the addition of anions of a weak             acid is investigated.  Chemical kinetic models of precipitation based           on second order consecutive reactions are used to represent the                 kinetics of complexation and precipitation.  These models are compared          with data from two stage precipitation experiments using the following          chemical systems:  2La(NO3)3 + 3H2 = 3H2C2O4 + 6HNO3 and Ca(OH)2 +              H2SO4 = CaSO4 + 2H2O.  The particle size distribution and particle              morphology are correlated with the condition which determines the               crystallization kinetics.  A novel technique based on Fourier series            descriptors of the crystal shape is applied to characterize the shapes          of the crystals formed in this work.
{'FirstName': 'David', 'LastName': 'Luerkens', 'PI_MID_INIT': 'W', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'David W Luerkens', 'EmailAddress': None, 'NSF_ID': '000390163', 'StartDate': '10/01/1985', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Iowa', 'CityName': 'IOWA CITY', 'ZipCode': '522421316', 'PhoneNumber': '3193352123', 'StreetAddress': '105 JESSUP HALL', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Iowa', 'StateCode': 'IA', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'IA01', 'ORG_UEI_NUM': 'Z1H9VJS8NG16', 'ORG_LGL_BUS_NAME': 'THE UNIVERSITY OF IOWA', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1417', 'Text': 'Interfacial Engineering Progra'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1985&All=true', 'xml': '8504405.xml'}