Deni Fajar Fitriyana^1,2,*, Rifky Ismail^1,3,*, Athanasius Priharyoto Bayuseno¹, Januar Parlaungan Siregar^4,5, Tezara Cionita⁶

Journal of Renewable Materials, Vol.12, No.6, pp. 1145-1163, 2024, DOI:10.32604/jrm.2024.052165 - 02 August 2024

Abstract Hydroxyapatite (HA) is a bio ceramic commonly utilized in bone tissue engineering due to its bioactive and osteoconductive properties. Crab shells are usually disregarded as waste material despite their significant CaCO content, and have not been widely utilized in the synthesis of HA. This study aims to synthesize and analyze HA derived from crab shells using the hydrothermal method with different durations of holding time. This study utilized precipitated calcium carbonate (PCC) derived from crab shells. With a hydrothermal reactor set at 160°C and varying holding times of 14 (HA_14), 16 (HA_16), and 18 (HA_18)… More > Graphic Abstract

Yingna Chen¹, Hailong Zhang², Jian Guo¹, Lu Cai³, Yaning Wang⁴, Xinxin Yao⁵, Wendong Song⁶, Lili Ji^4,*

Journal of Renewable Materials, Vol.9, No.10, pp. 1741-1755, 2021, DOI:10.32604/jrm.2021.015924 - 12 May 2021

Abstract The global consumption of p-xylene (PX) for the production of polymers has raised serious concerns about its impact on the environment. As various reports have shown the risks that PX could pose to human health, research into cost-effective remedial methods to remove PX from the environment has gained attraction. In this work, a hierarchical porous crab shell biochar (KCS) was synthesized, characterized, and evaluated for its effi- ciency to remove PX from aqueous solution. The characterizations of KCS, including the porous structure, surface functional group, phase structure, and surface morphology, were discussed by N₂ adsorption-desorption, FTIR,… More > Graphic Abstract

Xiao Han¹, Zhaodi Wu¹, Yi Yang¹, Jian Guo¹, Yaning Wang², Lu Cai³, Wendong Song⁴, Lili Ji^2,*

Journal of Renewable Materials, Vol.9, No.8, pp. 1377-1391, 2021, DOI:10.32604/jrm.2021.015076 - 08 April 2021

Abstract In this study, a porous biochar material derived from waste crab shell was prepared by one-step hydrothermal carbonization and acetic acid activation method at 180°C, which was characterized by SEM, BET, XRD and FTIR. The results show that the as-prepared crab shell biochar (CSB) exhibits a fluffy irregular layered structure with abundant pores and oxygen-containing functional groups, which can facilitate the adsorption of diesel using CSB. In addition, batch adsorption experiments had been performed, effects of initial diesel concentration, adsorption time, adsorbent dosage and pH on the diesel adsorption using CSB were analyzed, which could… More >