[Latin Name] Hypericum perforatum

[Plant Source] From China

[Appearance] Brown fine powder

[Specifications] 0.3% Hypericin

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Pesticide residue] EC396-2005, USP 34, EP 8.0, FDA

[Storage] Store in cool & dry area, keep away from the direct light and heat.

[Package] Packed in paper-drums and two plastic-bags inside.

[What is St. John's wort]

St. John’s wort (Hypericum perforatum) has a history of use as a medicine dating back to ancient Greece, where it was used for a range of illnesses, including various nervous disorders. St. John’s wort also has antibacterial, antioxidant, and antiviral properties. Because of its anti-inflammatory properties, it has been applied to the skin to help heal wounds and burns. St. John’s wort is one of the most commonly purchased herbal products in the United States.

In recent years, St. John’s wort has been studied extensively as a treatment for depression. Most studies show that St. John’s wort may help treat mild-to-moderate depression, and has fewer side effects than most other prescription antidepressants.

[Functions]

1. Anti-depressive and sedative properties;

2. Effective remedy for the nervous system, relaxing tension, and anxiety and lifting the spirits;

3. Anti-inflammatory

4. Improve capillary circulation

Truly one of the finest out there – continue to #2

“In Search of the (Membrane) Holy Grail: A 20-Year Journey”

Mark Benjamin
Civil and Environmental Engineering, University of Washington

ABSTRACT: Natural organic matter (NOM) is universally recognized as a major foulant of membranes used for drinking water treatment. The fouling has been attributed to adsorption of NOM in membrane pores and/or to formation of a gel layer that covers the membrane surface. Colloids, humics, and polysaccharides have each been implicated as major contributors to this fouling material. Most efforts to reduce the impact of this fouling have focused on pretreatment with conventional coagulants or powdered activated carbon.
We have developed a new micron-sized, granular adsorbent by mild heating of aluminum hydroxide and demonstrated that it can adsorb NOM rapidly and more efficiently than conventional additives. In addition, a cake layer of the new adsorbent imposes very little hydraulic resistance. As a result, when these adsorbents are used as the media for precoat filtration, a substantial portion of the NOM can be removed from the feed with only a few seconds of contact time, thereby reducing DBP formation potential and also dramatically reducing the fouling of downstream membranes. Our recent research has focused identifying the chemical characteristics of the fouling fraction of the NOM, on ways to efficiently backwash the adsorbents off of the support material after their capacity to collect the contaminants has been exhausted, and on regeneration of adsorbent.
At virtually every step in the research, we have encountered unexpected and challenging issues, many of which we have overcome, but others of which we continue to struggle with. The presentation will provide an overview of the successes, the frustrations, and the excitement we still feel about the potential of this new process.