ABSTRACT Exploring cost‐effective and high‐performance adsorbents plays a crucial role in the efficient utilization of agricultural waste and the remediation of heavy metal contamination in water bodies. This study focuses on preparing biomass carbon ( BC ) from banana pseudostems for the remediation of heavy metals in water. A systematic investigation was conducted to evaluate the effects of initial solution concentration, pH, reaction time, reaction temperature, and coexisting cations on the adsorption of Mn(II)…

Soil organic carbon (SOC) loss in sloping farmland is a critical challenge for agricultural sustainability. This study investigated how citrus peel biochar (CPB), field snail shell powder (SSP), and their composite (CPB + SSP) differentially regulate SOC dynamics across slope positions (upper, middle, lower) in Guangxi’s citrus orchards. Key findings revealed: CPB significantly increased SOC content (up to 5.5 g·kg−1 at lower slopes) via high carbon input but suppressed mineralization amount in lower slope positio…

Biochar has garnered considerable attention as a soil amendment due to its unique physicochemical properties. Its application not only enhances soil carbon sequestration but also improves nutrient availability. Incorporating biochar into soil is regarded as a promising strategy for mitigating global climate change while delivering substantial environmental and agricultural benefits. In this study, biochar was extracted from Siraitia grosvenorii and subsequently modified through alkali treatment. A laboratory incub…

Effective management of straw in rice (Oryza sativa L.)–rape (Brassica napus L.) rotation systems is essential for optimising resource efficiency and improving soil quality. This two-year study investigated the impact of seven straw treatment methods on soil organic carbon (SOC) dynamics. The treatments examined were as follows: (1) control (CK); (2) rice straw (SF); (3) rapeseed straw (YF); (4) rice-straw-derived biochar (SB); (5) rapeseed-straw-derived biochar (YB); (6) mixed straw (YSF); (7) mixed biochar (YSB)…

Summary: Manganese oxide-modified biochar (MBC) has attracted much attention as a multifunctional environmental remediation material. This work systematically examines the remediation mechanisms of MBC and its applications in environmental pollution control, with a focus on its potential for adsorbing and immobilizing soil and water pollutants. We provide a detailed analysis of the relevant interfacial reaction processes, including charge interactions, surface coordination, redox reactions, and ion exchange, empha…