PMID- 30972673 OWN - NLM STAT- MEDLINE DCOM- 20200302 LR - 20200302 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 27 IP - 1 DP - 2020 Jan TI - Modification of acidic and textural properties of a sulphated zirconia catalyst for efficient conversion of high-density polyethylene into liquid fuel. PG - 55-65 LID - 10.1007/s11356-019-04878-9 [doi] AB - Consumption of plastic has a rapid increase of about 8% per annum and reached to 400 million per tonnes approximately, where about 50% of plastic was disposed after using only once. Different techniques for treating this increased waste faced a number of issues related to cost and environmental and sustainable development. Catalytic conversion has been found as one of the most viable solutions to solve this problem. Sulphated zirconia (SZ) catalyst modified with calcium carbide (CC) was found to improve high-density polyethylene (HDPE) conversion into liquid fuel. The liquid content was improved from 39.0wt% to 66.0wt% at 410 degrees C. HDPE was converted 100% by weight using, SZ/CC with 66wt% liquid yield as compared to the conversion of approximately 98wt% with about 40wt% only liquid yield for the pure SZ. The composition of hydrocarbon liquid product was significantly changed from paraffin (16%) and aromatic (58%) to olefin (74%) and naphthenic (23%) compounds. This significant increase in liquid was related to changes in the acidic and textural characteristics of the new hybrid catalyst, SZ/CC where the total ammonia desorption of 337.0 mum NH(3)/g for the SZ was modified to 23.4 mum NH(3)/g for the SZ/CC. Both SZ and SZ/CC catalysts showed characteristics of mesoporous material, where the internal pore volume of SZ had reduced from 0.21 mL/g for SZ to 0.04 mL/g for SZ/CC. Furthermore, XRD analysis indicated the presence of a new compound, CaZrO(3) in the SZ/CC, which confirmed a chemical interaction between the SZ and CC through sintering of ZrO(2) and CaO. Therefore, the SZ/CC catalyst improves the liquid yield significantly and the selectivity towards olefinic and naphthenic compounds. FAU - Almustapha, Muhammad N AU - Almustapha MN AUID- ORCID: 0000-0003-0287-2067 AD - Research Centre for Carbon Solutions, Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University, Edinburgh, UK. AD - Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria. FAU - Farooq, Muhammad AU - Farooq M AD - Research Centre for Carbon Solutions, Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University, Edinburgh, UK. mf181@hw.ac.uk. AD - Department of Mechanical Engineering, University of Engineering and Technology, KSK Campus, Lahore, Pakistan. mf181@hw.ac.uk. FAU - Mohammed, Misbahu L AU - Mohammed ML AD - Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria. FAU - Farhan, Muhammad AU - Farhan M AD - Department of Mechanical Engineering, University of Engineering and Technology, KSK Campus, Lahore, Pakistan. FAU - Imran, Muhammad AU - Imran M AD - Department of Mechanical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark. FAU - Andresen, John M AU - Andresen JM AD - Research Centre for Carbon Solutions, Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University, Edinburgh, UK. LA - eng PT - Journal Article DEP - 20190410 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Hydrocarbons) RN - 0 (Plastics) RN - 0 (Sulfates) RN - 7664-41-7 (Ammonia) RN - 9002-88-4 (Polyethylene) RN - C6V6S92N3C (Zirconium) RN - S38N85C5G0 (zirconium oxide) SB - IM MH - Ammonia MH - Catalysis MH - Hydrocarbons MH - Plastics MH - Polyethylene/*chemistry MH - Sulfates MH - Zirconium/*chemistry OTO - NOTNLM OT - Calcium carbide OT - Catalytic conversion OT - HDPE OT - Plastic waste OT - Sulphated zirconia EDAT- 2019/04/12 06:00 MHDA- 2020/03/03 06:00 CRDT- 2019/04/12 06:00 PHST- 2018/12/11 00:00 [received] PHST- 2019/03/13 00:00 [accepted] PHST- 2019/04/12 06:00 [pubmed] PHST- 2020/03/03 06:00 [medline] PHST- 2019/04/12 06:00 [entrez] AID - 10.1007/s11356-019-04878-9 [pii] AID - 10.1007/s11356-019-04878-9 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2020 Jan;27(1):55-65. doi: 10.1007/s11356-019-04878-9. Epub 2019 Apr 10.