Haiqing Lin

PhD

Haiqing Lin

Haiqing Lin

PhD

Haiqing Lin

PhD

Research Topics

Novel membrane materials for CO2 capture from flue gas and syngas; robust membranes for natural gas liquids (NGLs) recovery from natural gas; understanding polymer structure/aging correlations in thin films

Contact Information

311 Furnas Hall

Buffalo NY, 14260

Phone: (716) 645-1856

Fax: (716) 645-3822

haiqingl@buffalo.edu

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Research

Dr. Lin’s research group focuses on the study of advanced polymer-based membrane materials and processes for gas and vapor separation and water purification. As an energy efficient separation technology, membrane is an attractive alternative to conventional thermally driven and energy intensive separations in addressing critical challenges in the area of energy and sustainability. Our research projects are often composed of design and synthesis of new materials and characterization of material structure and transport properties, with an end goal of solving practical problems and advancing fundamental understanding of structure-property correlation. A selection of current projects is shown below.

Dr. Lin Research Group picture

Photo taken September 2018.

From left: Top row – Zhihao Feng, Hien Nguyen, Weiguang Jia, Junyi Liu, Liang Huang;

Bottom row – Dr. Haiqing Lin, James Tran, Omran Omar, Xiaoyi Chen, Javani Gohil, Hsiao Mingyin, Nima Shahkaramipour, Gengyi Zhang, Bharath Vaidyanathan, Kiruthika Santhanam, Sarthak Doshi.

Current Projects

9/17/18
The goal of this project is to develop robust membranes for microalgae dewatering by surface-modification of membranes to increase hydrophilicity and thus superior antifouling properties. 
9/17/18
The goal of this project is to develop sorption enhanced mixed matrix membranes with H₂ permeance of 500 gas permeance units (gpu) and H₂/CO₂ selectivity of 30 at 150-200 °C. 
1/17/18
The goal of this project is to develop a portable, low-cost and energy-efficient nanomembrane patterning scheme, using a laser-chip “stamp”, to achieve excellent antifouling properties for wastewater recovery and reuse.
1/17/18
The goal of this project is to elucidate the effect of pendant rings and crosslinking on membrane gas separation properties, and design advanced materials with superior gas permeability and selectivity, and great stability against aging and plasticization for practical separations.  

CO₂ Capture from Coal-Derived Power Plants

Growing evidence indicates that man-made emissions of greenhouse gases, principally CO₂, are contributing to global climate change. The bulk of these CO₂ emissions are caused by the combustion of fossil fuels for power production. One approach to controlling CO₂ emissions to the atmosphere is to capture the CO₂ from the postcombustion flue gas or the precombustion syngas at the power plants for utilization or sequestration. The key to enabling the sustainable power production is a technology that can capture CO₂ from the mixtures with N₂ and H₂ at a low-cost and energy-efficient manner. We propose to molecularly design and engineer polymers with high CO₂ permeability and high CO₂/N₂ and CO₂/H₂ selectivity or polymers with high H₂ permeability and high H₂/CO₂ selectivity.

Membranes for Wastewater Reuse

Polymeric membranes for wastewater reuse are often fouled by suspended solids and dissolved organic matters, resulting in dramatic decrease in water flux. We are pursuing two approaches to mitigate the fouling . First, we aim to develop a facile approach to graft zwitterions (with superior hydrophilicity) to avoid favorable interactions between the membranes and foulants. Second, we aim to introduce micro/nano-patterns on the membrane surface to enhance the hydrodynamic force of the flow.

Fluorinated Polymers for Membrane Gas Separation

Development of high performance polymer materials for energy efficient membrane separation is often hampered by their deteriorated separation performance when made into industrial thin film composite membranes operating in the presence of strongly plasticizing components such as heavy hydrocarbons. Recently, perfluoropolymers attract significant interests, because of their superior stability against aging and plasticization. The objective of this program is to develop a fundamental, molecular-based mechanistic understanding of the effect of fluorination on the polymer thin film stability against aging and hydrocarbon-induced plasticization, and apply the guidelines to design a new generation of high performance membrane polymers for practical CO₂/CH₄ and C₃H₆/C₃H₈ separations.

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