Monday, January 19, 2015

Water Treatment By Sodium Hydroxide

Sodium hydroxide is well known to everyone. It is also called caustic soda. But little people know about that could be regarded as a good tool for processing the water. Sodium hydroxide has strong alkaline and is easy to soluble in water. In water treatment factory, sodium hydroxide can reduce the hardness of water by neutralization reaction. In fact, it is also a regeneration agent for regeneration of ion exchange resin in the industrial field.

Generally speaking, caustic soda is exist as a kind of liquid. So people can measure how many consumption we have used very conveniently. At the same time, sodium hydroxide could adjust the pH value of water, neutralization the waste water and even elimination of heavy metal ions in water by precipitation.

Maybe little people know the sodium hydroxide is used for making paper. The original material for making paper is straw or wood. These materials have a lot of lignin,  gum and other non cellulose except many cellulose. Before making paper, we should separate unnecessary impurity with mechanical method. And then using the fiber to make paper. However this fiber of paper pulp is very short and paper will be in bad quality and easy to broken. At this time, you may try to use the sodium hydroxide to help. Cooking the original with sodium hydroxide solution. Then people would be very curious. Since the sodium hydroxide without any damage capability for cellulose component and could decomposition of non cellulose gum.

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Monday, January 5, 2015

How To Eat Safe Vegetables

There is no doubt that fresh vegetables is most popular in our daily life. But little people known nitrite content is very little in the fresh vegetables. The content of nitrite will reach a peak after the vegetables have been stored about one to three days at room temperature. It will also reach a peak after vegetables have been stored about three to five days at cold storage conditions. So you should eat the fresh vegetables as soon as possible, especially for green leafy vegetables.

Many people think overnight food may produce carcinogenic nitrite. In fact, it is not correct. Because the nitrite is not carcinogenic, but the nitrosamine is carcinogenic. However it is not means that the overnight food is without any problem. Nitrite content in the overnight food is more higher than in the dishes which just doing. Nitrite can converted into nitrosamines in human body. So you had better eat overnight food as less as possible.

Since the nitrosamines carcinogen, we need to pay attention to eat more food which could inhibit the formation of nitrosamines. For example, the garlic can inhibit the nitrate reducing bacteria in the stomach and reduce the content of nitrite in the stomach. Besides we also suggest that you can drink tea in day time. Tea polyphenols in tea can also prevent the formation of nitrosamine.