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Research Ceratophyllum on Cr6+ and Cu2+ sorption
Undergraduate：hu xinting
Supervisor：Li Hui
Abstract: With the large discharge of industrial production and urban development and modernization of wastewater, increased accumulation of heavy metals in water, heavy metal pollution is getting worse, the scientific governance is i-mminent. In this paper, the use of biological adsorption of heavy metals adsor-bed water Cr6+, Cu2+. This selection of submerged plant Ceratophyllum as an adsorbent, which was dried, after grinding into powder into different concentrate-ions of Cr6+, Cu2+ solution, studied at different temperatures, different time, d-ifferent PH conditions , investigate the plant as feasibility of the adsorbent, th-us providing a viable solution for biosorption of heavy metals . Studies have shown that: concentration, time, PH can affect the size of Ceratophyllum adsor-ption of heavy metals, the greater the concentration of demersum Cr6+, Cu2+ r-emoval decreased, but the adsorption capacity gradually increased. In 60min ago, Ceratophyllum of Cr6+, Cu2+ removal gradually increased adsorption capacity-y is also increasing, 60min after Ceratophyllum of Cr6+, and Cu2+ adsorption capacity removal basically unchanged. Ceratophyllum at different temperatures for Cr6+, Cu2+ removal and adsorption capacity is also essentially unchanged. When changing solution PH, with the decrease of PH, removal and adsorption capacity of Cr6+ Ceratophyllum increasing. When PH = 1.5 when the removal rate and the maximum amount of adsorption; With PH worth increases, Cerato-phyllum of Cr6+, Cu2+ removal and adsorption capacity is increasing. Maximum when PH= 11.
key words: Goldfish algae; To heavy metal; Adsorption; Removal rate
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Unhappy
It is a day let me feel bad, I don't know why,maybe the weather, maybe other thing.I feel a little nervious. I know It doesn't matter I know everything will goes better.I want something I like. But finally I failure. So I was dispointed.
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About milk
Today, I have heard one thingt that milk isn't safe to our body now. they said the company add many hormone to make the cow's nipple grows big and then the cow can produce much milk, But because of the hormone, It can increased risk of Breast Cancer. And maybe break you body balance. It make me concers about what can we eat now? And what food is good for our health? The professor always provide some advice but next they have another words that opposite of before.
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The cloudy day
what a bad weather,when I get up.I can't see the sun,the thick fod ward of my sight.I think it must very cold today,so I wear the heavy clothes.But in the noon,the sun goes out.It was warm,the sunshine shoot in my face ,It warm my heart.And I think all thing is very nice right now.But I was wear too much.It makes me feel bad.I think the sunshine are represent hope and love.do you think so？
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lose weight
I want lose weight ,but I have say the words many times. It is hard to me ,because I was a version.I love dilicious food,and Ilike eat spicy food.love potatoes very much,Is there anyone like eat as me.focus on me.I'dlike to share my food and happniess with you.Also I'd like to know yours.
OK! It's time to on bed !good night everybady
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Did It
I have finish my experiment.I'm very glad to complete it.It is a little progress to me.It proved one thing:Nothing is inpossible.
But next,I should finish my lab report.So boring,But I have to do .
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come on baby
what a tired day,I had did the experiment for the hole day.It was very boring and I was crazy!Because I had did two of the experiment.but I didn't get the right result.I was so dispointed,and I think I if I suitable to do this.But I don't want to give up.I'll try my best to did the rxperiment.I must be success finally.I believe! come on!
15 novembre 2013
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How to reply after others modify your notebook
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A New Day
today is a nice day,nice weather ,nice people.
this is my first time use the medium,I want a new friend .but I don't know how to practice my english .I hope some one can help me.I hope I can learn a lot from this.
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