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In recent years, with the rapid development of China's various industries, industrial wastewater emissions have shown a dramatic increase in trend, so that the water pollution situation is serious and urgent task of wastewater treatment. Heavy metals in waste water is the most serious environmental pollution and hazards to human beings one of the largest industrial wastewater. Urgent need to vigorously strengthen scientific research and practice, and promote the development of heavy metal wastewater treatment technology. World of heavy metal wastewater treatment methods include ion exchange, coprecipitation law, film processing, reverse osmosis and adsorption. Adsorption method most commonly used method for the treatment of heavy metal wastewater, the effect of the removal of heavy metal ions mainly depends on the performance of the adsorbent. Wherein the molecular sieve is a novel, has a high adsorption selectivity of the adsorbent, which can have a strong adsorption effect the selective adsorption based on molecular size and configuration, and unsaturated molecules, polar molecules, and ease of polarized molecules . Currently, molecular sieve adsorption process has been widely used in the chemical, natural gas, petroleum, chemical industry, environmental protection, and metallurgical and other industrial sectors. MCM-41 mesoporous molecular sieve is a new type of mesoporous material developed in the early 1990s, the United States Mobil, one-dimensional, six-party rules pore structure, large specific surface area and so, therefore, with other adsorbents can not incomparable superiority, the industrialized promising. The free silicon MCM-41 surface containing hydroxy-Si (OH) 3 and = Si (OH) 2 reaction with a silane coupling agent, which the alkyl group, amino , thiol functional group is introduced into the mesoporous, and these active groups can be further derivatized to introduce other functional groups, in order to develop a new organic - inorganic functional materials. This thesis by hydrothermal crystallization method, cetyl trimethyl ammonium bromide as template agent, synthesis of mesoporous molecular sieve MCM-41 and BMS-3 synthetic samples by SEM, N 2 < / sub> adsorption - desorption isotherms, the specific surface area and pore size analysis, FT-IR and characterization methods for the characterization of the structure and nature of the results prove, MCM-41 than the BMS-3 has a larger surface area and uniform pore structure, therefore, we have chosen to MCM-41 as a follow-up function of the precursors. Then, grafting treatment method, the use of MCM-41 surface of the reactive-OH group, the organic functional groups - (CH 2 ) 3 N (CH 2 COOH) 2 modification to the surface of mesoporous molecular sieves, and the modification of the samples before and after using the contact angle, the specific surface area and pore size test, FT-IR, TGA, elemental analysis were used to characterize structure and characterization, the results show that the organic functional groups have been successful modification to the surface of the mesoporous molecular sieve, and the presence of the organic group does not change the unique structure of the matrix. Subsequently, this thesis functionalized mesoporous MCM-41 on the waste water adsorption properties of Cu (II) and Pb (II) of the effects of pH, temperature, adsorption time and the initial concentration of adsorbent performance explore the thermodynamic and kinetic properties of mesoporous adsorbents adsorption of the Cu 2 and Pb 2 . The study showed that: the mesoporous adsorbents in the dosage of 2 g / L, and the rotational speed of 120 rpm under the condition of adsorption of 50mg / L Cu 2 optimum pH value of 5.0, the adsorption of 50 mg / L Pb 2 best pH 6.0; meet the the classic Langmuir model theory Freundlich equilibrium adsorption time was 40 min; adsorbent adsorption isotherms of Cu 2 model, the theoretical maximum adsorption capacity of 38.46 mg / g; the adsorbent adsorption isotherms of Pb 2 only the Langmuir model, the theoretical maximum adsorption capacity of 40.82 mg / g. Adsorption Kinetics of mesoporous adsorbents Cu 2 and the Pb 2 adsorption process in line with the quasi-second-order equation.
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