Production of biochar from oil palm frond by steam pyrolysis for removal of residual contaminants in palm oil mill effluent final discharge

JOURNAL OF CLEANER PRODUCTION

卷:265

Article

Lawal, Abubakar Abdullahi^1,2  Hassan, Mohd Ali^1,3  Farid, Mohamed Abdillah Ahmad³  Yasim-Anuar, Tengku Arisyah Tengku³  Yusoff, Mohd Zulkhairi Mohd^3,4  Zakaria, Mohd Rafein^3,4  Roslan, Ahmad Muhaimin^3,4  Mokhtar, Mohd Noriznan¹  Shirai, Yoshihito⁵ 

[1] Univ Putra Malaysia, Fac Engn, Dept Proc & Food Engn, Serdang 43400, Selangor, Malaysia

[2] Univ Maiduguri, Fac Engn, Dept Agr & Environm Resources Engn, Maiduguri, Borno State, Nigeria

[3] Univ Putra Malaysia, Fac Biotechnol & Biomol Sci, Dept Bioproc Technol, Serdang 43400, Selangor, Malaysia

[4] Univ Putra Malaysia, Inst Trop Forestry & Forest Prod, Lab Biopolymer & Derivat, Serdang 43400, Selangor, Malaysia

[5] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Dept Biol Funct & Engn, Wakamatsu Ku, 2-4 Hibikino, Kitakyushu, Fukuoka 8080196, Japan

关键词: Oil palm frond;    Steam pyrolysis;    Biochar;    Palm oil mill effluent final discharge;   

DOI  :  10.1016/j.jclepro.2020.121643

来源: Elsevier

【 摘 要 】

Advances in biochar production and modification have extended the applications of biochar to wastewater treatment. However, not all feedstocks produced porous biochar at a moderate temperature suitable for wastewater treatment. In this study, biochar was produced from oil palm frond using steam pyrolysis at 500 degrees C and pulverized to granular and micro-fine particles. Both biochar particles were characterized and applied as adsorbents for treating final discharge of palm oil mill effluent. The effluent was also filtered and treated to examine the effect of suspended solids on adsorption capacity. The biochar had Brunauer-Emmett-Teller surface area of 406.6 m(2) g(-1). Pulverization eliminated the residual macropores in granular biochar, created new external surface area, and exposed constricted nanopores, which resulted in increasing the surface area to 457.7 m(2) g(-1). The adsorption capacity decreased from 24.6 to 6.1 mg g(-1) for chemical oxygen demand and 49.0 to 10.9 Pt-Co g(-1) for color by increasing the dosage of micro-fine biochar from 5 to 30 g L-1. The total suspended solids affected the adsorption capacity of granular biochar by blocking residual macropores that provide access to adsorption sites in micropores and mesopores. At 30 g L-1, the micro-fine biochar exhibited an effective reduction of chemical oxygen demand from 224 to 41.6 mg g(-1) and color from 344 to 15 Pt-Co g(-1) making the wastewater suitable for reuse in palm oil mills and safe for discharge into the aquatic environment.

【 授权许可】

Free