Project Database

Development of a Pilot Scale System for the Production of (Fertilizer-containing) Cellulosic Superabsorbent Polymer (SAP)

Cotton production lags cotton consumption. It is believed that climate change, especially for the decrease in rainfall is the major factor for the decrease of cotton yield. The project team endeavoured to develop a cellulosic SAP originated from cotton waste in ITP/086/17TP. Our as-prepared cellulosic SAP absorbs 20 – 30 times the volume of liquid and retains 15 times and more the volume of liquid relative to its own mass, showing great potential in maintaining high soil moisture under drought conditions.

In this project, we aim to develop a pilot scale system for larger amount production of SAP with capacity ≥ 1 kg / day.

The objectives of this project include:

1. Research and select the type of crosslinking equipment for the pilot scale system and establish the system

2. Produce cellulosic SAP using the pilot scale system

3. Explore the feasibility of introducing fertilizer (NPK – nitrogen, phosphorus and potassium) into the cellulosic SAP, which will result in a bi-functional SAP in that both water and fertilizer can be released to soil under drought conditions

4. Explore the possibility of broader application of the technology to other cellulosic waste (e.g. linen waste) as the raw material of the cellulosic SAP, apart from cotton waste that had been studied in ITP/086/17TP

5. Investigate the economics for demonstrating the feasibility of production

6. Provide samples to potential industrial user(s) for evaluation

Project No. (ITC) ITP/037/20TP
Project Type Platform
Project Co-ordinator Mr. KEH Yee Man, Edwin
Research Institute The Hong Kong Research Insititute of Textiles & Apparel Limited
ITF Amount HK$ 4,119,546
Start Date DD/MM/YY 2020-12-31
Completion Date DD/MM/YY 2022-12-30
Sponsors
Esquel Enterprise Ltd.
H&M Hennes & Mauritz (Far East) Ltd
Shahi Exports Pvt Ltd