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Preparation method of mariculture heavy metal pollution treating agent

A technology of mariculture and production method, applied in the field of water pollution treatment, can solve the problems of complicated production process, long production time, threat of mariculture, etc., and achieve the effect of improving efficiency and reducing waste of resources

Inactive Publication Date: 2017-05-24
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the increasingly serious pollution of heavy metals in seawater, it poses a serious threat to seawater aquaculture, which will lead to excessive heavy metals in seawater aquaculture objects for a long time; the current ecological treatment agent has a chelating agent made from feather hydrolyzed protein alone, and the production method takes a long time. Complex process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The manufacturing method of the heavy metal pollution treatment agent for mariculture in this embodiment includes:

[0019] Step 1. After cleaning the seafood scraps, place them at minus 20°C and freeze for 3 hours, crush them with liquid nitrogen, pass a 100-mesh sieve to obtain seafood powder powder, add water, place in ultrasonic for 0.5 hours, and then place it in the radiation 5 minutes in the field; the radiation dose of the field is 20-25 kilocuries.

[0020] Step 2. Add protease at a weight ratio of 50:1 to the seafood powder, place it in the autoclave, add citric acid to adjust the pH to 3, the temperature is 45°C, stir for 2 hours, and then place it in a water bath at a temperature of 100 The enzyme is killed at ℃, the filtrate is filtered after centrifugation, and concentrated under reduced pressure to 1 / 2 of the original volume to obtain the heavy metal pollution treatment agent for mariculture.

Embodiment 2

[0022] The manufacturing method of the heavy metal pollution treatment agent for mariculture in this embodiment includes:

[0023] Step 1. After cleaning the seafood scraps, place them at minus 30°C and freeze for 6 hours, crush them with liquid nitrogen, pass through a 100-mesh sieve to obtain seafood powder powder, add water equal to the seafood powder, and place in ultrasonic for 2 hours After that, it is placed in the irradiation field for 10 minutes; the irradiation dose of the irradiation field is 25 kilocuries, and the working frequency of ultrasound is 400 Hz.

[0024] Step 2. Add protease at a weight ratio of 50:1 to the seafood powder. The protease includes trypsin and papain, mixed at a weight ratio of 1:1, placed in a high-voltage pulsed electric field for 30 minutes, and then placed in a high-pressure reactor. Add citric acid to adjust the pH to 5, the temperature is 65 ℃, after stirring for 4 hours, then place in a water bath at 120 ℃ to kill the enzyme, centrifuge an...

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Abstract

The invention discloses a preparation method of a mariculture heavy metal pollution treating agent. The preparation method comprises steps as follows: step 1, seafood waste is processed into powder, and after water is added to the powder, a mixed solution is subjected to ultrasonic and irradiation treatment; step 2, protease is added to the mixed solution for high-pressure enzymolysis, then the solution is subjected to enzyme deactivation in water bath at the temperature of 100-120 DEG , centrifuged and filtered, a filtrate is obtained and subjected to reduced-pressure concentration to reach 1 / 2 of the original volume, and the mariculture heavy metal pollution treating agent is obtained. According to the preparation method, the seafood waste is utilized for preparing the treating agent, protein in the seafood waste can be effectively extracted through ultrasonic and irradiation treatment and taken as an active substance of the treating agent, the protein in the seafood waste can form small-molecule amino acid after protease treatment, an amino acid chelating agent is formed by the small-molecule amino acid and citric acid and can be bound with heavy metal in water to sink the heavy metal into the pond, and culture water quality is improved.

Description

Technical field [0001] The invention relates to the technical field of water pollution treatment, in particular to a manufacturing method of a heavy metal pollution treatment agent for marine aquaculture. Background technique [0002] Marine heavy metal pollution refers to pollution caused by certain heavy metals entering the ocean through various channels. Pollution caused by the introduction of heavy metals into the ocean by human activities. At present, the heavy metal elements polluting the ocean mainly include mercury, cadmium, lead, zinc, chromium, and copper. Man-made sources are mainly the discharge of industrial sewage, mine wastewater and the loss of heavy metal pesticides. The heavy metals released during the combustion of coal and oil are transported into the ocean by the atmosphere. It is estimated that more than 3,000 tons of mercury enter the ocean every year due to the burning of minerals. In addition, mercury-containing slag and ore pulp also release part of t...

Claims

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Application Information

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IPC IPC(8): C02F1/62C02F103/08
CPCC02F1/62C02F3/34C02F2103/08C02F2303/04
Inventor 钟书明
Owner QINZHOU UNIV
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