Generation of soil solution acid-neutralizing capacity by addition of dissolved inorganic carbon

1989 ◽  
Vol 23 (8) ◽  
pp. 1021-1024 ◽  
Author(s):  
Mark B. David ◽  
George F. Vance
Keyword(s):  
Soil Solution ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Acid Neutralizing Capacity ◽  
Neutralizing Capacity

Short-Term Changes in the Acid/Base Chemistry of Two Acidic Lakes Following Calcium Carbonate Treatment

1989 ◽  
Vol 46 (2) ◽  
pp. 306-314 ◽  
Author(s):  
G. F. Fordham ◽  
C. T. Driscoll
Keyword(s):  
New York ◽  
Dissolved Inorganic Carbon ◽  
Initial Perturbation ◽  
Acid Neutralizing Capacity ◽  
Short Term ◽  
Acidic Lakes ◽  
Neutralizing Capacity ◽  
Rapid Dissolution ◽  
Additional Release ◽  
Woods Lake

Woods Lake and Cranberry Pond, two chronically acidic lakes located in the Adirondack region of New York, USA, were intensively monitored following CaCO3 treatment in May 1985 to evaluate the mechanisms controlling short-term changes in water column chemistry. Immediately following base application (24 h), both lakes responded like systems closed to atmospheric CO2, because the dissolution of very small CaCO3 particles (median diameter 2 μm) exceeded the rate of atmospheric CO2 intrusion. Rapid dissolution of CaCO3 coupled with very low concentrations of dissolved inorganic carbon (DIC) prior to treatment, resulted in pH increases in the upper mixed waters from 4.9 to 9.4 in Woods Lake and from 4.6 to 9.1 in Cranberry Pond, as waters readily became saturated with CaCO3. pH increases were accompanied by stoichiometric increases in dissolved Ca2+, acid neutralizing capacity (ANC), and DIC. Following this initial perturbation, the upper mixed waters equilibrated with atmospheric CO2 over a 4 wk period, facilitating additional release of dissolved Ca2+ and ANC due to dissolution of suspended CaCO3. The amount of CaCO3 that dissolved during the 4 wk immediately following treatment, calculated from Ca2+ budgets, was very high; 86% in Woods Lake and 79% in Cranberry Pond.

Predicting Reacidification of Calcite Treated Acid Lakes

1989 ◽  
Vol 46 (2) ◽  
pp. 323-332 ◽  
Author(s):  
Joseph V. DePinto ◽  
Richard D. Scheffe ◽  
William G. Booty ◽  
Thomas C. Young
Keyword(s):  
Water Column ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Dissolved Inorganic Carbon ◽  
Proton Exchange ◽  
Acid Neutralizing Capacity ◽  
Water Proton ◽  
Acid Lakes ◽  
Neutralizing Capacity ◽  
Woods Lake

A mathematical model (acid lake reacidification model, ALaRM) for predicting reacidification times of calcite treated acid lakes has been calibrated and field tested using data from two Lake Acidification Mitigation Project (LAMP)) lakes (Woods Lake and Cranberry Pond, Big Moose, N.Y.) The model is based on dynamic water column and sediment mass balances of acid neutralizing capacity (ANC) and dissolved inorganic carbon (DIC). Inclusion of a sediment submodel that includes sediment–pore water proton exchange, production of DIC through sediment respiration, ANC generation or utilization through redox reactions, long-term dissolution of calcite deposited in the surface sediments during application, and pH adjustment through an equilibrium proton balance, permits the deterministic simulation of sediment response to whole-lake liming and its subsequent effect on water column reacidification. Application of ALaRM to the postliming response of the two lakes demonstrated that reacidification was controlled primarily by hydrologic flushing and secondarily by sediment–water ANC transfer. Cranberry Pond, which has a mean hydraulic retention time of 2 mo, reacidified to near 0 ANC and pH < 5 within 6 mo after treatment. Woods Lake, which has a mean hydraulic retention time of almost 6 mo, still had an ANC > 20 μeq∙L−1 and a pH > 5.6 just prior to its reliming 15 mo after its initial treatment.

Evaluation of Hemidesmus indicus root as an antacid by In vitro

2016 ◽  
Vol 5 (04) ◽  
pp. 4524
Author(s):  
Abdullah Shaikh Farooque ◽  
Md. Azharuddin Ismail Atar*
Keyword(s):  
Skin Diseases ◽  
Care Delivery ◽  
Health Care Delivery System ◽  
Acid Neutralizing Capacity ◽  
Standard Drug ◽  
Hemidesmus Indicus ◽  
Neutralizing Capacity ◽  
Loss Of Appetite ◽  
Powdered Drug

Medicinal plants are being widely used, either as single drug or in combination in health care delivery system. Indian Sarsaparilla, Hemidesmus indicus (Family: Asclepiadaceae) is a commonly known Indian Medicinal Plant, which is widely recognized in traditional systems of Medicine. It contains various phytoconstituents belonging to the category glycosides, flavonoids, tannins, sterols and volatile oils. It has been reported as useful in biliousness, blood diseases, dysentery, diarrhea, respiratory disorders, skin diseases, syphilis, fever, leprosy, leucoderma, leucorrhoea, itching, bronchitis, asthma, eye diseases, epileptic fits in children, kidney and urinary disorders, loss of appetite, burning sensation, dyspepsia, nutritional disorders, ulcer and rheumatism. Several studies are being carried towards its activities like analgesic, anti-inflammatory, antiulcer, hepatoprotective, antioxidant and helicobactericidal properties. In our study we have evaluated antacid activity of sariva (Anantmool) by using In-Vitro method, i.e. ANC (Acid Neutralizing Capacity). This evaluation was done by comparing the ANC of sariva macerated & powdered drug with water as blank & standard drug i.e. NaHCO3. Based on this In-Vitro experiment, we can conclude that, the macerated & powdered drug of sariva (Anantmool) evaluated in this study, varied in potency as measured in terms of their ANC. These results having ** i.e. P < 0.01 & Passed the normality test. However, the present study being in-vitro, the effects of antacid may vary In-Vitro; individual variations also contribute to the ultimate effectiveness of as antacid.        

Sign in / Sign up

Export Citation Format

Share Document