tailieunhanh - Simple method of purification of humic acid isolated from press mud

A study on purification of humic acid (HA) isolated from press mud(PM) was conducted at Organic Farming Research Institute( OFRI), UAS, Raichur during 2017-18 with distilled water as a purifying agent in the place of HCl-HF mixture to purify isolated HA from press mud. The conventional procedure makes use of mineral acids and dialysis step. Standard procedures were used to extract and fractionate HA from press mud. The extracted HA was purified by suspending the HA in 50 ml of distilled water, centrifuged for one hour at an interval of 15 minutes; the supernatant solution was analyzed for K+ , Na+ and Ca + Mg by Flame Photometer and Versanate titration methods, respectively. The suspension left over after centrifugation was purified HA which was oven dried at 40 ºC to a constant weight. Washing of HA for 4 consecutive times (15 min for each washing) reduced the ash (mineral matter) content of the HA to an acceptance level of 2 per cent. This finding was associated with significant decrease in content of K+ , Na+ and Ca + Mg with increasing washing time. This observation also suggests that the distilled water used during the purification process served as Bronsted-Lowry acid thereby donating more H+ which may have replaced some of K + , Na + and Ca + Mg at the exchange sites of the HA. Humic acids isolated from press mud can effectively be purified within one hour using distilled water. | Simple method of purification of humic acid isolated from press mud

• Hoá học
• Simple method of purification
• Purification of humic acid isolated
• Humic acid isolated
• Press mud
• Simple method
• BMC Biotechnology
• Non chromatographic purification
• Catalytic efficiency
• Elastin like polypeptides
• Enzyme engineering
• Development and validation of a simple spectrophotometric method
• A simple spectrophotometric method
• Quantification of chloride in polymeric materials
• The dissolution of the polymer
• Mycophenolic acid
• Validation of a simple HPLC method
• Simple HPLC method
• Quantify mycophenolic acid concentrations
• Human plasma
• A simple microwave assisted method
• Microwave assisted method
• Synthesis of Thalidomide
• L glutamic acid
• Presence of 4 dimethyl aminopyridine
• Word representations
• A simple and general method
• semi supervised learning
• báo cáo khoa học
• báo cáo ngôn ngữ
• ngôn ngữ tự nhiên
• Improving mechanical properties
• Multiwalled carbon nanotube epoxy composites
• Simple stretch drawing method
• Multi walled carbon nanotube
• The composite properties considerably
• Nuclear engineering and technology
• Parameter dependence of steam explosion loads and proposal
• Simple evaluation method
• Energy Conversion ratio
• Light water reactors
• Simple genomic DNA extraction
• Efficient and universal method
• The extraction of genomic DNA
• Genomic DNA from bacteria
• Microalgae suitable
• PCR based applications
• Education research
• Highly efficient pervoskite solar cells
• Simple single step solution method
• Perovskite solar cell
• Wet processing
• Interfacial engineering
• Presentation The Audio
• Presentation Lingual Method
• Listen and read paragraph
• The audio lingual method
• Answer the question
• The simple past
• Journal of Science and Technology
• Simple synthesis of graphene nanosheets
• Microwave–assisted method
• Few–layer–graphene
• Microwave radiation and sonication process
• the 100 simple secrets
• succcessful people
• the key to success
• method of success
• success secrets
• successful people
• successful art
• life experiences
• Vietnam Journal of Mechanics
• Simple weak form for contact problems with coulomb friction
• Contact problems with coulomb friction
• The finite element method
• The initial boundary value contact problem
• Journal of Automation and Control Engineering
• Real time lane change assistant method
• Side mirror cameras
• Vanishing point detection
• The simple algorithm
• The brightness and darkness
• Temperature gradient method
• Single crystal growth
• Layer structure materials
• Fabricate bulk single crystals
• FE SEM measurement
• BMC Chemistry
• Bioanalytical method validation
• Cell culture medium
• 5 Hydroxytryptamine
• RIN 14B cells
• Journal of Mechanics
• Simple resonance in nonlinear torsional vibration systems
• Three variable generalized masses
• The small parameter method
• Torsional vibration system
• Hydrothermal method
• Hydroxyapatite crystal nanowires
• Nanowire size
• Scanning electron microscopy
• Simple hydrothermal method
• Journal of Chemistry
• Reducing sugars
• Glucose determination
• Microplate reader
• Fruit juice
• Cu(II) Nc spectrophotometric method
• Communications in Physics
• Simple experimental setups
• Observing wave particle
• Entanglement separability superpositions
• Wave particle superposition
• Interaction free method
• Function Parameters
• Using Modules
• Control Statements
• Method Relationships
• System Environment
• Structured Text
• Simple HTML Processing
• Simple Program
• Java Platform
• HTML Form
• Building Applications
• Method Invocation
• User Interface
• báo cáo y học
• công trình nghiên cứu về y học
• tài liệu về y học
• cách trình bày báo cáo
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học