Clean pulp and paper making and pollution control innovation team of Guangxi University

Overcoming the problems of unstable operation of the traditional synthetic chlorine dioxide preparation system, high chlorine content in the product, and high oxygen content in the hydrogen generated by electrolysis, a stable and efficient synthetic chlorine dioxide preparation technology without solid formation was developed, and the chlorine dioxide generation efficiency was increased from 90.0% to 93.5%. The conversion rate of sodium chlorate increased from 95% to more than 97% by solving the problems of low conversion rate of sodium chlorate by traditional methanol reduction method, high content of chlorine gas in products and difficult utilization of by-products as resources. Invented high temperature chlorine dioxide bleaching and chlorine dioxide preparation technology and equipment system based on inhibiting AOX generation, solved the "jam neck" technical problem of clean bleaching in China, completely broke the monopoly of technology and equipment in Canada and other countries, and has been applied in nearly 30 enterprises at home and abroad, such as the world's top ten papermaking enterprises APP Group, to achieve AOX ultra-low emissions. The series of achievements won the second prize of National Technological Invention in 2019. This award is the only national technological invention second prize in Guangxi so far.

Based on the key technology of liquid-solid one-step complete transformation of heterogeneous chemical reaction, the amphoteric lentil cellulose adsorption material with multiple adsorption sites, high density and equilibrium was developed to solve the problem that low concentration of heavy metal ions in water is difficult to remove efficiently. At present, it has been applied in more than 40 heavy metal polluted water bodies, sediment and mining soil remediation projects in China, which has improved the equipment technology and industrialization level of heavy metal soil remediation in China, and achieved good social, ecological environment and economic benefits.

The team participates in academic conferences to discuss research programs

High value modification technologies such as plasma-enhanced chemical vapor deposition, 3D printing, microencapsulation, layer self-assembly and particle emulsification are adopted to explore the mechanical enhancement, high barrier property, optical and antibacterial functions of fiber wipes, and systematically develop a series of bio-based functional packaging materials. Such as polylactic acid high barrier type, anti-migration type, super hydrophobic type and structural color functional composite materials, chlorine dioxide microcapsules and antibacterial, antioxidant and other natural active substances microcapsule based fillers/coatings, as well as nanocellulosic high barrier coating, thermal insulation buffer foam, 3D printing containers, active antibacterial film and intelligent indicator labels and other functional biomass packaging materials.

A series of important achievements have been made in the engineering key technology and equipment of large-scale chlorine dioxide preparation, the engineering key technology of multi-strengthening elemental chlorine bleaching, and the engineering technology of efficient anaerobic treatment and resource utilization of high concentration organic wastewater, and the industrial application has been realized. Among them, 10 core invention patents have been transformed in the fields of chlorine dioxide preparation, clean bleaching, and paper waste water treatment, with a transfer amount of more than 10 million yuan.

In 2018, relying on the scientific and technological achievements of the team, the joint enterprise successfully made the 14 internal lakes of the school become cloudy and clear, adding a beautiful scenery for the construction of ecological civilization of the campus, creating another green ecology of sustainable development, making the school present the 90th anniversary of the founding of the school with a new look, and once again highlighting the modern level of the ecological management ability of the team.